http://agarwal.seas.upenn.edu Nanoscale Phase-Change and Photonics Thu, 28 Mar 2013 00:45:32 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/silicon-coupled-with-plasmon-nanocavities-generates-bright-visible-hot-luminescence http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/silicon-coupled-with-plasmon-nanocavities-generates-bright-visible-hot-luminescence#comments Sun, 24 Mar 2013 21:30:53 +0000 edits http://agarwal.seas.upenn.edu/?p=841 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/silicon-coupled-with-plasmon-nanocavities-generates-bright-visible-hot-luminescence/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2013 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2013#comments Sun, 24 Mar 2013 20:34:23 +0000 edits http://agarwal.seas.upenn.edu/?p=836 Click to enlarge

43.
Chang-Hee Cho, Carlos O. Aspetti, Joohee Park, Ritesh Agarwal, “Silicon coupled with plasmon nanocavities generates bright visible hot luminescence”, Nature Photonics, 2013. [Link]

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42.
Brian Piccione, Rahul Agarwal, Yeonwoong Jung, Ritesh Agarwal, “Size-dependent chemical transformation, structural phase change, and optical properties of nanowires”, Philosophical Magazine, 2013. [Link]

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2013/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/all-optical-active-switching-in-individual-semiconductor-nanowires http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/all-optical-active-switching-in-individual-semiconductor-nanowires#comments Wed, 05 Sep 2012 05:40:51 +0000 kumark http://agarwal.seas.upenn.edu/?p=823 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/all-optical-active-switching-in-individual-semiconductor-nanowires/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/electrical-wind-force-driven-and-dislocation-templated-amorphization-in-phase-change-nanowires http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/electrical-wind-force-driven-and-dislocation-templated-amorphization-in-phase-change-nanowires#comments Tue, 26 Jun 2012 12:47:11 +0000 kumark http://agarwal.seas.upenn.edu/?p=809 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/electrical-wind-force-driven-and-dislocation-templated-amorphization-in-phase-change-nanowires/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2012 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2012#comments Tue, 26 Jun 2012 12:32:29 +0000 kumark http://agarwal.seas.upenn.edu/?p=801 Continue reading »]]>

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41.
Brian Piccione, Chang-Hee Cho, Lambert K. van Vugt, Ritesh Agarwal, “All-optical active switching in individual semiconductor nanowires”, Nature Nano, 2012. [Link]

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40.
Sung-Wook Nam, Hee-Suk Chung, Yu Chieh Lo, Liang Qi, Ju Li, Ye Lu, A.T. Charlie Johnson, Yeonwoong Jung, Pavan Nukala, Ritesh Agarwal, “Electrical Wind Force–Driven and Dislocation-Templated Amorphization in Phase-Change Nanowires”, Science, June 2012. [Link to pdf]

See also a perspective by Dan Hewak and Behrad Gholipour [Here]

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2012/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/enhancement-of-interfacial-polymer-crystallinity-using-chromism-in-single-inorganic-nanowire%e2%80%93polymer-nanohybrids-for-photovoltaic-applications http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/enhancement-of-interfacial-polymer-crystallinity-using-chromism-in-single-inorganic-nanowire%e2%80%93polymer-nanohybrids-for-photovoltaic-applications#comments Mon, 01 Aug 2011 17:39:05 +0000 kumark http://agarwal.seas.upenn.edu/?p=793 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/enhancement-of-interfacial-polymer-crystallinity-using-chromism-in-single-inorganic-nanowire%e2%80%93polymer-nanohybrids-for-photovoltaic-applications/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/tailoring-hot-exciton-emission-and-lifetimes-in-semiconducting-nanowires-via-whispering-gallery-nanocavity-plasmons http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/tailoring-hot-exciton-emission-and-lifetimes-in-semiconducting-nanowires-via-whispering-gallery-nanocavity-plasmons#comments Mon, 18 Jul 2011 19:26:31 +0000 kumark http://agarwal.seas.upenn.edu/?p=786 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/tailoring-hot-exciton-emission-and-lifetimes-in-semiconducting-nanowires-via-whispering-gallery-nanocavity-plasmons/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/one-dimensional-polaritons-with-size-tunable-and-enhanced-coupling-strengths-in-semiconductor-nanowires http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/one-dimensional-polaritons-with-size-tunable-and-enhanced-coupling-strengths-in-semiconductor-nanowires#comments Tue, 31 May 2011 21:15:21 +0000 kumark http://agarwal.seas.upenn.edu/?p=772 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/one-dimensional-polaritons-with-size-tunable-and-enhanced-coupling-strengths-in-semiconductor-nanowires/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/hee-suk-chung-completes-his-post-doctoral-candidature http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/hee-suk-chung-completes-his-post-doctoral-candidature#comments Tue, 15 Mar 2011 06:15:17 +0000 kumark http://agarwal.seas.upenn.edu/?p=758 Hee-Suk Chung has completed his post-doctoral candidature with the group. He is headed to Samsung, South Korea. The group wishes him all the very best for his future and will surely miss him and his expertise!

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/hee-suk-chung-completes-his-post-doctoral-candidature/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/high-resolution-transmission-electron-microscopy-study-of-electrically-driven-phase-change-phenomena-in-ge2sb2te5-nanowires http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/high-resolution-transmission-electron-microscopy-study-of-electrically-driven-phase-change-phenomena-in-ge2sb2te5-nanowires#comments Mon, 14 Feb 2011 22:53:56 +0000 kumark http://agarwal.seas.upenn.edu/?p=732 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/high-resolution-transmission-electron-microscopy-study-of-electrically-driven-phase-change-phenomena-in-ge2sb2te5-nanowires/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/incorporating-polaritonic-effects-in-semiconductor-nanowire-waveguide-dispersion http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/incorporating-polaritonic-effects-in-semiconductor-nanowire-waveguide-dispersion#comments Mon, 14 Feb 2011 22:52:29 +0000 kumark http://agarwal.seas.upenn.edu/?p=735 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/incorporating-polaritonic-effects-in-semiconductor-nanowire-waveguide-dispersion/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/latest-news http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/latest-news#comments Sun, 13 Feb 2011 00:12:47 +0000 kumark http://agarwal.seas.upenn.edu/?p=721 Continue reading »]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/one-dimensional-polaritons-with-size-tunable-and-enhanced-coupling-strengths-in-semiconductor-nanowires/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/nanowire-transformation-by-size-dependent-cation-exchange-reactions http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/nanowire-transformation-by-size-dependent-cation-exchange-reactions#comments Sat, 12 Feb 2011 23:48:18 +0000 kumark http://agarwal.seas.upenn.edu/?p=747 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/nanowire-transformation-by-size-dependent-cation-exchange-reactions/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2011 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2011#comments Sat, 12 Feb 2011 20:55:14 +0000 kumark http://agarwal.seas.upenn.edu/?p=656 Continue reading »]]>
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39.
J. D. Cox, M. R. Singh, C. Racknor, and R. Agarwal, “Switching in Polaritonic–Photonic Crystal Nanofibers Doped with Quantum Dots”, NANO Letters 2011. [Link]


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38.
Christopher M. Rodd and Ritesh Agarwal, “Enhancement of Interfacial Polymer Crystallinity Using Chromism in Single Inorganic Nanowire–Polymer Nanohybrids for Photovoltaic Applications”, NANO Letters 2011. [Link]


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37.
Chang-Hee Cho, Carlos O. Aspetti, Michael E. Turk, James M. Kikkawa, Sung-Wook Nam & Ritesh Agarwal, “Tailoring hot-exciton emission and lifetimes in semiconducting nanowires via whispering-gallery nanocavity plasmons”, Nature Materials (2011). [Link]


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36.
Lambert K. van Vugt, Brian Piccione, Chang-Hee Cho, Pavan Nukala, and Ritesh Agarwal, “One-dimensional polaritons with size-tunable and enhanced coupling strengths in semiconductor nanowires”, PNAS 2011. [Link]


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35.
Y. Jung, S.W. Nam, and R. Agarwal, “High Resolution Transmission Electron Microscopy Study of Electrically-Driven Phase Change Phenomena in Ge2Sb2Te5 Nanowires”. [Link]


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34.
Y. Jung, R. Agarwal, C.Y. Yang and R. Agarwal*, "Chalcogenide Phase-change Memory Nanotubes for Lower Writing Current Operation", Nanotechnology, invited paper for the nanoscale memory issue. [Link].


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33.
L. K. Van Vugt, B. Piccione, C.H. Cho, C. Aspetti, A. Wirshbha and R. Agarwal, “Variable Temperature Spectroscopy of as-grown and Passivated CdS Nanowire Optical Waveguide Cavities”, J. Physical. Chemistry, invited paper for special issue for G. R. Fleming. [Link]


]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2011/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2010 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2010#comments Sat, 12 Feb 2011 20:54:16 +0000 kumark http://agarwal.seas.upenn.edu/?p=683 Continue reading »]]>
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32.
L.K. Van Vugt, B. Piccione, and R. Agarwal*, “Incorporating Polaritonic Effects in Semiconductor Nanowire Waveguide Dispersion”, Applied Physics Letters, 97, 061115 (2010) [Link]


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31.
M. Mitra, Y. Jung, and R. Agarwal, “Extremely Low Drift of Resistance and Threshold Voltage in Amorphous Phase Change Nanowire Devices”, Applied Physics Letters, 96, 222111 (2010) [Link]


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30.
B. Piccione, L. K. Van Vugt and R. Agarwal, “Propagation Loss Spectroscopy on Single Nanowire Active Waveguides”, Nano Letters, 10, 2251 (2010). [Link]


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29.
B. Zhang, Y. Jung, H.-S. Chung, L. K. Van Vugt and R. Agarwal’ “Nanowire Transformation by Size-Dependent Cation Exchange Reactions”, Nano Letters, 10, 149 (2010). [Link]


]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2010/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2009 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2009#comments Sat, 12 Feb 2011 20:53:21 +0000 kumark http://agarwal.seas.upenn.edu/?p=686 Continue reading »]]>
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28.
H.-S. Chung, Y. Jung, S. C. Kim, D. H. Kim, K. H. Oh and R. Agarwal, “Epitaxial Growth and Ordering of GeTe Nanowires on Microcrystals Determined by Surface Energy Minimization”, Nano Letters, 9, 2395 (2009). [Link]


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27.
Y. Jung, C.-Y. Yang, S.-H. Lee and R. Agarwal, Phase-Change Ge-Sb Nanowires: Synthesis, Memory Switching, and Phase-Instability, Nano Letters, 9, 2013 (2009). [Link]


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26.
A.T. Jennings, Y. Jung, J. Engel, and R. Agarwal. "Diameter-Controlled Synthesis of Phase-Change GeTe Nanowires," J. Phys. Chem. C, 113, (2009), 6898. [Link]


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25.
L.K. van Vugt, B. Zhang, B. Piccione, A. Spector and R. Agarwal, “Size-Dependent Waveguide Dispersion in Nanowire Optical Cavities: Slowed Light and Dispersionless Guiding”, Nano Letters (2009). DOI: 10.1021/nl900371r. [Link]


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24.
N. J. Pinto, K. V. Carrasquillo, C. M. Rodd, and R. Agarwal, “Rectifying Junctions of Tin Oxide and Poly(3-hexylthiophene) Nanofibers Fabricated via Electrospinning”, Applied Physics Letters, 94, 083504 (2009). [Link]


]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2009/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2008 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2008#comments Sat, 12 Feb 2011 20:52:39 +0000 kumark http://agarwal.seas.upenn.edu/?p=689 Continue reading »]]> 23.
Y. Jung, S.-H. Lee, D.-K. Ko, and R. Agarwal, “Size-dependent Surface-induced Heterogeneous Nucleation Driven Phase-change in Ge2Sb2Te5 Nanowires”, Nano Letters, 8, 3303 (2008). [Link]

22.
O. Hayden, R. Agarwal*, and W. Lu, “Semiconductor Nanowire Devices – Bottom Up Meets Top Down”, Nano Today, 3, 12 (2008). [Link]

21.
Y. Jung, S.-H. Lee, A. T. Jennings, and R. Agarwal, “Core-Shell Heterostructured Phase Change  Nanowire Multi-state Memory”, Nano Letters, 8, 2056 (2008) [Link]

20.
S.-H. Lee, Y. Jung, A. T. Jennings and R. Agarwal*, “Comparative Study of Memory Switching Phenomena in Phase Change GeTe and Ge2Sb2Te5 Nanowire Devices”, Physica E, 40, 2474 (2008). [Link]

19.
R. Agarwal*, “Hetero-interfaces in Semiconductor Nanowires”, Small 4, 1872 (2008).

18.
H.-S. Chung, Y. Jung, S.-H. Lee, T. J. Zimmerman, J. W. Kim, S. H. Lee, S. C. Kim, K. H. Oh and R. Agarwal, “A Generic Approach for Catalyst-supported Vertically-aligned Nanowire Growth”, Nano Letters, 8, 1328 (2008). [Link]

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2008/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2007 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2007#comments Sat, 12 Feb 2011 20:50:17 +0000 kumark http://agarwal.seas.upenn.edu/?p=692 17.
S.-H. Lee, Y. Jung and R. Agarwal, “Highly-scalable Nonvolatile and Ultra-low Power Phase-change Nanowire Memory”, Nature Nanotechnology, 2, 626 (2007). [Link]

16.
Y. Jung, D-K Ko, and R. Agarwal, "Synthesis and Structural Characterization of Branched Nanowire Heterostructures," Nano Letters. 7, 264 -268, 2007. [Link]

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2007/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2006 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2006#comments Sat, 12 Feb 2011 20:49:27 +0000 kumark http://agarwal.seas.upenn.edu/?p=695 Continue reading »]]> 15.
Y. Jung, S.-H. Lee, D.-K. Ko, and R. Agarwal, “Synthesis and Characterization of Ge2Sb2Te5 Nanowires with Memory Switching Effect”, J. American Chemical Society, 128, 14026, (2006).

14.
S.-H. Lee, D.-K. Ko, Y. Jung and R. Agarwal, “Size-Dependent Phase Transition Memory Switching Behavior and Low Writing Currents in GeTe Nanowires”, Appied. Physics Letters, 89, 223116, (2006).

13.
R. Agarwal*, and C. M. Lieber, “Semiconductor Nanowires: Optics and Optoelectronics”, Applied Physics. A: Mater. Sci. Proc. 85, 209-215 (2006).

12.
O. Hayden, R. Agarwal and C. M. Lieber, "Nanowire based Avalanche Photodiodes," Nature Materials,5, 352 (2006). (cover article)

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2006/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2005-and-earlier http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2005-and-earlier#comments Sat, 12 Feb 2011 20:48:23 +0000 kumark http://agarwal.seas.upenn.edu/?p=699 Continue reading »]]> 11.
R. Agarwal, K. Ladavac, Y. Roichman, G. Yu, C. M. Lieber & D. G. Grier," Assembling Semiconductor Nanowire Heterostructures with Holographic Optical Traps," Optics Express 13, 8906-8912 (2005).

10.
R. Agarwal, C. J. Barrelet and C. M. Lieber, "Lasing Mechanism in Single Cadmium Sulfide Nanowire Optical Cavities," Nano Letters 5, 917-920 (2005).

9.
X. Duan, Y. Huang, R. Agarwal, and C.M. Lieber, "Single-Nanowire Electrically Driven Lasers," Nature 421, 241 (2003).

8.
G. R. Fleming, M. Yang, R. Agarwal, B. S. Prall, L. J. Kaufman and F. Neuwahl, "Two-Dimensional Electronic Spectroscopy," invited paper Bull. Kor. Chem. Soc., 24, 1081 (2003).

7.
K. Kwak, M. Cho, G. R. Fleming, R. Agarwal, and B. S. Prall, "Two-Color Transient Grating Spectroscopy of a Two-level System," invited paper, Bull. Kor. Chem Soc. 24, 1069 (2003).

6.
R. Agarwal, A. H. Rizvi, B. S. Prall, J. D. Olsen, C. N. Hunter, and G. R. Fleming, "The   Nature of Disorder and Inter-complex Energy Transfer in LH2 at Room Temperature:  A  Three Pulse Photon Echo Peak Shift Study," J. Physica. Chemistry A, 106, 7573 (2002).,

5.
R. Agarwal, B. S. Prall, A. H. Rizvi, G. R. Fleming, "Two Color Three Pulse Photon Echo Peak Shift Spectroscopy," J. Chemical Physics, 116, 6243 (2002).

4.
M. Yang, R. Agarwal, G. R. Fleming, "Mechanism of Photosynthetic Energy Transfer in Purple Bacteria," invited paper for Lord Porter issue, J. of Photochem. and Photobio., Part A, 142, 107 (2001).

3.
R. Agarwal, M. Yang, Q.-H. Xu, and G. R. Fleming, "Three-Pulse Photon Echo Peak Shift Study of the B800 band of the LH2 complex of Rps. acidophila at room temperature: A Coupled Master Equation and Non-linear Optical Response Function Approach," J. Physical. Chemistry B, 105, 1887 (2001).

2.
R. Agarwal, B. P. Krueger, G. D. Scholes, M. Yang, J. Yom, L. Mets, and G. R. Fleming, "Ultrafast Energy Transfer in LHC-II Revealed by Three-Pulse Photon Echo Peak Shift Measurements," J. Physical. Chemistry B, 104, 2908 (2000).

1.
M.-L. Groot, J.-Y. Yu, R. Agarwal, J. R. Norris, and G. R. Fleming, "Three-Pulse Photon Echo Measurements on the Accessory Pigments in the Reaction Center of Rhodobacter sphaeroides," J. Physical. Chemistry B, 102, 5923 (1998).

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/2005-and-earlier/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/ritesh-agarwal http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/ritesh-agarwal#comments Tue, 08 Feb 2011 08:59:27 +0000 kumark http://agarwal.seas.upenn.edu/?p=544
Associate Professor

Materials Science and Engineering
3231 Walnut Street
Philadelphia, PA 19104-6272

Office: LRSM 308
Phone: (215) 573-3037
Email: riteshag[at]seas.upenn.edu

[CV]

[Biography]

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/ritesh-agarwal/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/masters-students http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/masters-students#comments Tue, 08 Feb 2011 08:47:28 +0000 kumark http://agarwal.seas.upenn.edu/?p=541 img { float: left; } .clear { clear: both; } .person { height: 160px; }



Haofeng Li

Nanowire Photovoltaics

 

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/masters-students/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/visiting-researchers http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/visiting-researchers#comments Tue, 08 Feb 2011 05:20:10 +0000 kumark http://agarwal.seas.upenn.edu/?p=533
Do Hyun Kim

Phase change, strain engineering

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/visiting-researchers/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/ph-d-students http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/ph-d-students#comments Tue, 08 Feb 2011 04:53:00 +0000 kumark http://agarwal.seas.upenn.edu/?p=501 img { float: left; } .clear { clear: both; } .person { height: 160px; }


Brian Piccione

Light-Matter Coupling in Nanowire Optical Cavities

http://www.seas.upenn.edu/~bpic/

 


Carlos Aspetti

Nanowire plasmonics

 


Christopher Rodd

Nanowire-Conducting Polymer Hybrid Systems

 


Joohee Park

Nanowire Optics

 


Pavan Nukala

Phase Change Nanowires: insitu microscopy analysis

http://www.seas.upenn.edu/~pnukala/


Rahul Agarwal

Chalcogenide nanowires, Phase change and thermoelectrics

 


Siddharth Ghosh

(Jointly with G. Piazza, ESE, Penn)

Nanowire Optomechanics

 

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]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/people/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/ritesh-agarwal-receives-2010-nih-new-innovator-award http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/ritesh-agarwal-receives-2010-nih-new-innovator-award#comments Thu, 13 Jan 2011 04:49:52 +0000 kumark http://upennsas.com/riteshag/?p=302 Continue reading »]]>

Excerpted from the UPenn SEAS website:

Ritesh Agarwal, assistant professor in the department of Materials Science and Engineering, has been awarded the 2010 NIH Director’s New Innovator Award from the National Institutes of Health, providing $1.5 million over five years to support his research into improving biological imaging using nanotechnology.

The awards are given by the NIH to address two important goals: stimulate highly innovative research that has the potential for significant impact, and support promising early stage investigators who propose bold new approaches that have the potential to produce a major impact on a broad area of biomedical or behavioral research.

“It is a great honor and a wonderful opportunity for us to assemble novel nanoscale optoelectronic probes to study intracellular activity with unprecedented resolution,” states Agarwal. “A unique aspect of this award is that it does not require any preliminary data and thus allows people like me with limited experience in biology or medicine to expand our expertise and to attack very challenging problems. This award will have a transformational effect on my research program at Penn.”

Agarwal’s project, “Optoelectronic Nanowire Probes for Investigation of Intracellular Processes,” will seek to assemble nanowire devices with optical and electrical functions to probe cell and intracellular dynamics with unprecedented resolution. By combining nanowire waveguides, fluorophores, quantum dots, lasers, light emitting diodes, and photodetectors, they hope to create a new generation of biological imaging: probes that can target subcellular regions, measuring for the first time, in real time, chemical reactions, cellular signalling and cellular reactions due to complex phenomena like a locally delivered drug.

The ability to visualize in vitro intra- and inter- cellular processes in real time will aid the design of new drugs for a large number of diseases that impact public health.

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/ritesh-agarwal-receives-2010-nih-new-innovator-award/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/356 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/356#comments Thu, 13 Jan 2011 04:40:21 +0000 kumark http://upennsas.com/riteshag/?p=356

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/356/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/328 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/328#comments Wed, 12 Jan 2011 23:29:05 +0000 kumark http://upennsas.com/riteshag/?p=328
Mariam Georges (joint with Dan Gianola, MSE), expected May 2011.

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/328/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/399 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/399#comments Wed, 12 Jan 2011 21:44:27 +0000 kumark http://upennsas.com/riteshag/?p=399
Nanowire-Conducting Polymer Hybrid Systems

May 2011

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/399/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/396 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/396#comments Wed, 12 Jan 2011 21:43:35 +0000 kumark http://upennsas.com/riteshag/?p=396
Light-Matter Coupling in Nanowire Optical Cavities

http://www.seas.upenn.edu/~bpic/

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/396/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/394 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/394#comments Wed, 12 Jan 2011 21:42:33 +0000 kumark http://upennsas.com/riteshag/?p=394
Nanowire plasmonics

May 2014

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/394/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/392 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/392#comments Wed, 12 Jan 2011 21:41:35 +0000 kumark http://upennsas.com/riteshag/?p=392
Phase Change Nanowires: insitu microscopy analysis

May 2014

http://www.seas.upenn.edu/~pnukala/

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/392/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/389 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/389#comments Wed, 12 Jan 2011 21:40:23 +0000 kumark http://upennsas.com/riteshag/?p=389
Chalcogenide nanowires, Phase change and thermoelectrics

May 2015

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/389/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/384 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/384#comments Wed, 12 Jan 2011 21:38:39 +0000 kumark http://upennsas.com/riteshag/?p=384
Nanowire Optics

May 2015

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/384/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/381 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/381#comments Wed, 12 Jan 2011 21:36:48 +0000 kumark http://upennsas.com/riteshag/?p=381
(Jointly with G. Piazza, ESE, Penn)

Nanowire Optomechanics

May 2014

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/381/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/363 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/363#comments Mon, 10 Jan 2011 04:16:16 +0000 kumark http://upennsas.com/riteshag/?p=363

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/363/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/350 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/350#comments Mon, 10 Jan 2011 03:24:16 +0000 kumark http://upennsas.com/riteshag/?p=350 img { float: left; } .clear { clear: both; } .person { height: 160px; }


Dr. Lambert van Vugt

Nanowire photonics

http://www.seas.upenn.edu/~lvan


Dr. Chang-Hee Cho

Nanoscale Plasmonics

http://www.seas.upenn.edu/~changhee


Dr. Sung-Wook Nam

Phase-change materials, in-situ TEM

http://www.seas.upenn.edu/~sunnam


Dr. Hee-Suk Chung

Phase-change materials, in-situ TEM

 


Dr. Moon Hyung Jang

Phase Change Nanowire growth and Characterization

http://www.seas.upenn.edu/~jmoonh

 

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/350/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/333 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/333#comments Sun, 09 Jan 2011 18:07:35 +0000 kumark http://upennsas.com/riteshag/?p=333
Haofeng Li (Nanowire Photovoltaics), expected May 2011

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/333/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/324 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/324#comments Sun, 09 Jan 2011 22:59:35 +0000 kumark http://upennsas.com/riteshag/?p=324 img { float: left; } .clear { clear: both; } .person { height: 160px; }


Karthik Kumar

Ultra-small phase change nanowires

 


Aaron Wirshba

Nanowire waveguides

 

]]> http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/324/feed 0 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/309 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/309#comments Sun, 09 Jan 2011 17:53:44 +0000 kumark http://upennsas.com/riteshag/?p=309
  • Dr. Se-Ho Lee (Phase Change Nanowires); Currently, Senior MTS, Hynix Semiconductor Inc, Korea
  • Dr. Bin Zhang (Cation Exchange Phenomena in II-VI Nanowires); currenty, Assistant Professor of Chemistry, Tianjin University.
  • Dr. Huacheng Zhang (Nanowire Surface Engineering for Organic/Inorganic Devices)
  • Dr. Mukut Mitra (Drift in nanowire phase change memory), currently at Applied Materials
    • ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/309/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/past-ph-d-students http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/past-ph-d-students#comments Sun, 09 Jan 2011 17:52:13 +0000 kumark http://upennsas.com/riteshag/?p=315
  • Yeonwoong Jung (Nanowire Phase Change Memory): PhD Awarded May 2009. Currently postdoctoral fellow at Yale University. Recipient of MRS-silver medal award, NBIC-Penn Student Research award, Stein Prize for best PhD Thesis.
    • ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/past-ph-d-students/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/313 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/313#comments Sun, 09 Jan 2011 17:51:49 +0000 kumark http://upennsas.com/riteshag/?p=313 Continue reading »]]>
  • Dong-Kyon Ko (Growth of Phase Change Nanowires): Dec 2006. Currently PhD. student at Penn Chemistry.
  • Yu-Han Cheng (Controlled Growth of High-Density Nanowires): May 2007. Currently PhD. student at  UCSD.
  • Tyler Zimmerman (Nanowire Solar Cells): May 2008. Currently at Boeing Corporation.
  • Chung-Ying Yang (Recrystallization Mechanism in Phase Change Nanowires): May 2009. Currently at Taiwan Semiconductors.
  • Chien-An Chen (Growth Dominant Recrystallization in Phase Change Nanowires): May 2009
    • ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/313/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/322 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/322#comments Sun, 09 Jan 2011 17:50:17 +0000 kumark http://upennsas.com/riteshag/?p=322 Continue reading »]]>
  • Rahil Mehrotra (Radiation effects on phase change nanowire devices)
  • Thomas Walsh (Radiation effects on phase change nanowire devices)
  • Shoham Bhadra (Nanowire spectrometer)
  • Eric Mills (Nanowire spectrometer)
  • Arthur Spector (Nanowire waveguide dispersion)
  • Mariam Georges (Bio inspired photovltaics)
  • Justin Chung (Coupled nanowire LED-detector systems)
  • Andrew Jennings (Size-Controlled growth of Phase Change Nanowires with Novel Catalysts)
  • Alex Sztein (Waveguiding in Nanowires with Controlled Defects)
  • Johanna Engel (Diameter Control of Phase Change Nanowires)
  • Jennifer Ehrich (Memory Switching in Nanowires)
    • ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/322/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/nanowire-phase-change-memory-university-of-pennsylvania http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/nanowire-phase-change-memory-university-of-pennsylvania#comments Sun, 09 Jan 2011 21:35:00 +0000 kumark http://upennsas.com/riteshag/?p=286 Continue reading »]]> Featured amongst the top five biggest advance in nanoscience in 2007 by MIT Technology Review
    Featured on Comcast Network Channel on cable television as a part of Art Fennel Reports show, Dec 19th, 2007.
    Phase Change Nanowire images displayed at the New York Museum of Modern Art as a part of the exhibition “Design and the Elastic Mind”, Feb 24-May 12, 2008.
    University of Pennsylvania Press Release, “Penn Engineers Design Electronic Computer Memory in Nanoscale Form That Retrieves Data 1,000 Times Faster”
    Penn Gazette, “Super Memory”, Jan 2008.
    Daily Pennsylvanian, “Engineers develop nanoscale memory”, Sep 2007.
    Philadelphia Metro, “Penn Gains Speed” Sep 2007
    The Hindustan Times (One of the most widely circulated newspapers in India, Hindi version)
    The Telegraph (Calcutta). “Miraculous Memory”, October 29, 2007.
    ABC news, “Nanowires for Faster Memory”, Sep 2007
    MIT Technology Review “Nanowires for Faster Memory”, October 2007
    Technology Review Germany (in German)
    Materials Today, “Nanowires rapidly regain their memory”, Nov 2007 issue.
    Materials World Magazine “Down to the nanowire”, Nov 2007 issue
    Also featured on at least 50 science and technology websites including: EurekaAlert Nanotechweb.org, Physics.org, NASA Tech Briefs, Nanotechwire, CCN Magazine, Science Daily, TG Daily, PhysOrg, Primidi.com, Endaget.com, Nanowerk.com, NSTI.org, TRNMag.com, ITBusinessedge.com., Frost & Sullivan

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/nanowire-phase-change-memory-university-of-pennsylvania/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/assembly-of-nanowires-with-optical-tweezers-harvard-university http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/assembly-of-nanowires-with-optical-tweezers-harvard-university#comments Sun, 09 Jan 2011 21:06:45 +0000 kumark http://upennsas.com/riteshag/?p=284 Cover story in Photonics Spectra magazine, Jan 2006.
    Featured in Harvard Crimson, Jan 2006.
    TRN news roundup, “Holograms Organize Nanowires”, Dec 2005.
    Nano Today magazine, Feb 2006, “Assembling Nanowires is a HOT Topic”.

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/assembly-of-nanowires-with-optical-tweezers-harvard-university/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/35 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/35#comments Sun, 09 Jan 2011 15:46:22 +0000 kumark http://upennsas.com/riteshag/?p=271
    Y. Jung, S.W. Nam, and R. Agarwal, “High Resolution Transmission Electron Microscopy Study of Electrically-Driven Phase Change Phenomena in Ge2Sb2Te5 Nanowires”. [Link]

    <<Click to enlarge

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    Y. Jung, R. Agarwal, C.Y. Yang and R. Agarwal*, “Chalcogenide Phase-change Memory Nanotubes for Lower Writing Current Operation”, Nanotechnology, invited paper for the nanoscale memory issue, accepted.

    <<Click to enlarge

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/34/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/33 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/33#comments Sun, 09 Jan 2011 15:33:07 +0000 kumark http://upennsas.com/riteshag/?p=259
    L. K. Van Vugt, B. Piccione, C.H. Cho, C. Aspetti, A. Wirshbha and R. Agarwal, “Variable Temperature Spectroscopy of as-grown and Passivated CdS Nanowire Optical Waveguide Cavities”, J. Physical. Chemistry, invited paper for special issue for G. R. Fleming. [Link]

    <<Click to enlarge

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/33/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/32 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/32#comments Sun, 09 Jan 2011 15:32:18 +0000 kumark http://upennsas.com/riteshag/?p=256
    L.K. Van Vugt, B. Piccione, and R. Agarwal*, “Incorporating Polaritonic Effects in Semiconductor Nanowire Waveguide Dispersion”, Applied Physics Letters, 97, 061115 (2010) [Link]

    <<Click to enlarge

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/32/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/31 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/31#comments Sun, 09 Jan 2011 20:30:50 +0000 kumark http://upennsas.com/riteshag/?p=252
    M. Mitra, Y. Jung, and R. Agarwal, “Extremely Low Drift of Resistance and Threshold Voltage in Amorphous Phase Change Nanowire Devices”, Applied Physics Letters, 96, 222111 (2010) [Link]

    <<Click to enlarge

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    B. Piccione, L. K. Van Vugt and R. Agarwal, “Propagation Loss Spectroscopy on Single Nanowire Active Waveguides”, Nano Letters, 10, 2251 (2010). [Link]

    <<Click to enlarge

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/30/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/29 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/29#comments Sun, 09 Jan 2011 20:29:26 +0000 kumark http://upennsas.com/riteshag/?p=247
    B. Zhang, Y. Jung, H.-S. Chung, L. K. Van Vugt and R. Agarwal’ “Nanowire Transformation by Size-Dependent Cation Exchange Reactions”, Nano Letters, 10, 149 (2010). [Link]

    <<Click to enlarge

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/29/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/27-2 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/27-2#comments Sun, 09 Jan 2011 15:27:49 +0000 kumark http://upennsas.com/riteshag/?p=245 H.-S. Chung, Y. Jung, S. C. Kim, D. H. Kim, K. H. Oh and R. Agarwal, “Epitaxial Growth and Ordering of GeTe Nanowires on Microcrystals Determined by Surface Energy Minimization”, Nano Letters, 9, 2395 (2009).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/27-2/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/26-2 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/26-2#comments Sun, 09 Jan 2011 15:26:56 +0000 kumark http://upennsas.com/riteshag/?p=238 L.K. van Vugt, B. Zhang, B. Piccione, A. Spector and R. Agarwal, “Size-Dependent Waveguide Dispersion in Nanowire Optical Cavities: Slowed Light and Dispersionless Guiding”, Nano Letters (2009). DOI: 10.1021/nl900371r

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/26-2/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/24 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/24#comments Sun, 09 Jan 2011 20:26:01 +0000 kumark http://upennsas.com/riteshag/?p=236 N. J. Pinto, K. V. Carrasquillo, C. M. Rodd, and R. Agarwal, “Rectifying Junctions of Tin Oxide and Poly(3-hexylthiophene) Nanofibers Fabricated via Electrospinning”, Applied Physics Letters, 94, 083504 (2009).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/24/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/23 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/23#comments Sun, 09 Jan 2011 20:25:26 +0000 kumark http://upennsas.com/riteshag/?p=234

    Y. Jung, S.-H. Lee, D.-K. Ko, and R. Agarwal, “Size-dependent Surface-induced Heterogeneous Nucleation Driven Phase-change in Ge2Sb2Te5 Nanowires”, Nano Letters, 8, 3303 (2008).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/23/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/22 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/22#comments Sun, 09 Jan 2011 20:24:37 +0000 kumark http://upennsas.com/riteshag/?p=232 O. Hayden, R. Agarwal*, and W. Lu, “Semiconductor Nanowire Devices – Bottom Up Meets Top Down”, Nano Today, 3, 12 (2008).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/22/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/21 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/21#comments Sun, 09 Jan 2011 20:23:11 +0000 kumark http://upennsas.com/riteshag/?p=230
    Y. Jung, S.-H. Lee, A. T. Jennings, and R. Agarwal, “Core-Shell Heterostructured Phase Change  Nanowire Multi-state Memory”, Nano Letters, 8, 2056 (2008) [Link]

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/21/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/226 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/226#comments Sun, 09 Jan 2011 20:07:35 +0000 kumark http://upennsas.com/riteshag/?p=226 Agarwal R, Mitra M, Jung Y, “System and Method for the Relaxation of Stress in Phase Change Memory Devices”, International patent application, PCT/US2010/050134

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/226/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/224 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/224#comments Sun, 09 Jan 2011 20:07:09 +0000 kumark http://upennsas.com/riteshag/?p=224 C. M. Lieber, X. Duan, Y. Huang, and R. Agarwal, “Nanoscale Coherent Optical Components”, 10/624,135, U.S. patent pending; 10/734,086 U.S. Continuation Patent, Pending of 10/624,135.

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/224/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/222 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/222#comments Sun, 09 Jan 2011 20:06:46 +0000 kumark http://upennsas.com/riteshag/?p=222 D.G. Grier, R. Agarwal, G. Yu, K. Ladavac, and C. M. Lieber, “System and Method for Processing Nanowires with Holographic Optical Tweezers”, U.S. Provisional Patent, awarded 2009.

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/222/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/219 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/219#comments Sun, 09 Jan 2011 20:04:36 +0000 kumark http://upennsas.com/riteshag/?p=219 “Two-Color Three Pulse Photon Echo Peak Shift, ” R. Agarwal, B. S. Prall, A. H. Rizvi, M. Yang, and G.R. Fleming, Ultrafast Phenomena XIII, Eds. R. D. Miller, M. M. Murnane, N. F. Scherer and A. M. Weiner, (Springer, Berlin), 532 (2003).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/219/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/217 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/217#comments Sun, 09 Jan 2011 20:04:04 +0000 kumark http://upennsas.com/riteshag/?p=217 “Disorder in Photosynthetic Light Harvesting Complexes: A Three-Pulse Photon Echo Peak Shift Study,” R. Agarwal, M. Yang, and G. R. Fleming, Ultrafast Phenomena XII, Eds. T. Elsaesser, S. Mukamel, M. M. Murnane and N. F. Scherer (Springer, New York), 653 (2000).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/217/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/20 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/20#comments Sun, 09 Jan 2011 01:55:46 +0000 kumark http://upennsas.com/riteshag/?p=118
    S.-H. Lee, Y. Jung and R. Agarwal, “Highly-scalable Nonvolatile and Ultra-low Power Phase-change Nanowire Memory”, Nature Nanotechnology, 2, 626 (2007). [Link]
    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/20/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/19 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/19#comments Sat, 08 Jan 2011 20:55:17 +0000 kumark http://upennsas.com/riteshag/?p=116 S.-H. Lee, Y. Jung, A. T. Jennings and R. Agarwal*, “Comparative Study of Memory Switching Phenomena in Phase Change GeTe and Ge2Sb2Te5 Nanowire Devices”, Physica E, 40, 2474 (2008).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/19/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/18 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/18#comments Sat, 08 Jan 2011 20:54:37 +0000 kumark http://upennsas.com/riteshag/?p=114 R. Agarwal*, “Hetero-interfaces in Semiconductor Nanowires”, Small 4, 1872 (2008).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/18/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/17 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/17#comments Sat, 08 Jan 2011 20:54:07 +0000 kumark http://upennsas.com/riteshag/?p=112 H.-S. Chung, Y. Jung, S.-H. Lee, T. J. Zimmerman, J. W. Kim, S. H. Lee, S. C. Kim, K. H. Oh and R. Agarwal, “A Generic Approach for Catalyst-supported Vertically-aligned Nanowire Growth”, Nano Letters, 8, 1328 (2008).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/17/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/16 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/16#comments Sat, 08 Jan 2011 20:53:40 +0000 kumark http://upennsas.com/riteshag/?p=110 Y. Jung, D-K Ko, and R. Agarwal, “Synthesis and Structural Characterization of Branched Nanowire Heterostructures,” Nano Letters. 7, 264 -268, 2007.

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/16/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/15 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/15#comments Sat, 08 Jan 2011 20:53:14 +0000 kumark http://upennsas.com/riteshag/?p=108 Y. Jung, S.-H. Lee, D.-K. Ko, and R. Agarwal, “Synthesis and Characterization of Ge2Sb2Te5 Nanowires with Memory Switching Effect”, J. American Chemical Society, 128, 14026, (2006).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/15/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/14 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/14#comments Sat, 08 Jan 2011 20:52:53 +0000 kumark http://upennsas.com/riteshag/?p=106 S.-H. Lee, D.-K. Ko, Y. Jung and R. Agarwal, “Size-Dependent Phase Transition Memory Switching Behavior and Low Writing Currents in GeTe Nanowires”, Appied. Physics Letters, 89, 223116, (2006).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/14/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/13 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/13#comments Sat, 08 Jan 2011 20:49:12 +0000 kumark http://upennsas.com/riteshag/?p=104 R. Agarwal*, and C. M. Lieber, “Semiconductor Nanowires: Optics and Optoelectronics”,  Applied Physics. A: Mater. Sci. Proc. 85, 209-215 (2006).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/13/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/12 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/12#comments Sat, 08 Jan 2011 20:48:21 +0000 kumark http://upennsas.com/riteshag/?p=102 R. Agarwal, K. Ladavac, Y. Roichman, G. Yu, C. M. Lieber & D. G. Grier,” Assembling Semiconductor Nanowire Heterostructures with Holographic Optical Traps,” Optics Express 13, 8906-8912 (2005).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/12/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/11 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/11#comments Sat, 08 Jan 2011 20:47:22 +0000 kumark http://upennsas.com/riteshag/?p=98 O. Hayden, R. Agarwal and C. M. Lieber, “Nanowire based Avalanche Photodiodes,”  Nature Materials, 5, 352 (2006). (cover article)

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/11/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/10 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/10#comments Sat, 08 Jan 2011 20:45:36 +0000 kumark http://upennsas.com/riteshag/?p=94 R. Agarwal, C. J. Barrelet and C. M. Lieber, “Lasing Mechanism in Single Cadmium Sulfide Nanowire Optical Cavities,” Nano Letters 5, 917-920 (2005)

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/10/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/73 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/73#comments Sat, 08 Jan 2011 01:09:10 +0000 kumark http://upennsas.com/riteshag/?p=73 X. Duan, Y. Huang, R. Agarwal, and C.M. Lieber, “Single-Nanowire Electrically Driven Lasers,” Nature 421, 241 (2003).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/73/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/71 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/71#comments Sat, 08 Jan 2011 01:08:49 +0000 kumark http://upennsas.com/riteshag/?p=71 G. R. Fleming, M. Yang, R. Agarwal, B. S. Prall, L. J. Kaufman and F. Neuwahl, “Two-Dimensional Electronic Spectroscopy,” invited paper Bull. Kor. Chem. Soc., 24, 1081 (2003).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/71/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/69 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/69#comments Sat, 08 Jan 2011 01:08:27 +0000 kumark http://upennsas.com/riteshag/?p=69 K. Kwak, M. Cho, G. R. Fleming, R. Agarwal, and B. S. Prall, “Two-Color Transient Grating Spectroscopy of a Two-level System,” invited paper, Bull. Kor. Chem Soc. 24, 1069 (2003).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/69/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/67 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/67#comments Sat, 08 Jan 2011 01:08:07 +0000 kumark http://upennsas.com/riteshag/?p=67 R. Agarwal, A. H. Rizvi, B. S. Prall, J. D. Olsen, C. N. Hunter, and G. R. Fleming, “The   Nature of Disorder and Inter-complex Energy Transfer in LH2 at Room Temperature:  A  Three Pulse Photon Echo Peak Shift Study,” J. Physica. Chemistry A, 106, 7573 (2002).,

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/67/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/64 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/64#comments Sat, 08 Jan 2011 01:07:34 +0000 kumark http://upennsas.com/riteshag/?p=64 R. Agarwal, B. S. Prall, A. H. Rizvi, G. R. Fleming, “Two Color Three Pulse Photon Echo Peak Shift Spectroscopy,” J. Chemical Physics, 116, 6243 (2002).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/64/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/62 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/62#comments Sat, 08 Jan 2011 01:07:15 +0000 kumark http://upennsas.com/riteshag/?p=62 M. Yang, R. Agarwal, G. R. Fleming, “Mechanism of Photosynthetic Energy Transfer in Purple Bacteria,” invited paper for Lord Porter issue, J. of Photochem. and Photobio., Part A, 142, 107 (2001).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/62/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/60 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/60#comments Sat, 08 Jan 2011 01:06:42 +0000 kumark http://upennsas.com/riteshag/?p=60 R. Agarwal, M. Yang, Q.-H. Xu, and G. R. Fleming, “Three-Pulse Photon Echo Peak Shift Study of the B800 band of the LH2 complex of Rps. acidophila at room temperature: A Coupled Master Equation and Non-linear Optical Response Function Approach,” J. Physical. Chemistry B, 105, 1887 (2001).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/60/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/57 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/57#comments Wed, 05 Jan 2011 06:32:19 +0000 kumark http://upennsas.com/riteshag/?p=57 R. Agarwal, B. P. Krueger, G. D. Scholes, M. Yang, J. Yom, L. Mets, and G. R. Fleming, “Ultrafast Energy Transfer in LHC-II Revealed by Three-Pulse Photon Echo Peak Shift Measurements,” J. Physical. Chemistry B, 104, 2908 (2000).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/57/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/55 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/55#comments Wed, 05 Jan 2011 06:24:47 +0000 kumark http://upennsas.com/riteshag/?p=55 M.-L. Groot, J.-Y. Yu, R. Agarwal, J. R. Norris, and G. R. Fleming, “Three-Pulse Photon Echo Measurements on the Accessory Pigments in the Reaction Center of Rhodobacter sphaeroides,” J. Physical. Chemistry B, 102, 5923 (1998).

    ]]>     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/55/feed 0     http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/hello-world-2 http://agarwal.seas.upenn.edu/http:/agarwal.seas.upenn.edu/hello-world-2#comments Sun, 02 Jan 2011 01:18:56 +0000 kumark http://upennsas.com/riteshag/?p=1 Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!

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