Generation of helical topological exciton-polaritons

Photocurrent detection of the orbital angular momentum of light

Spatially dispersive circular photogalvanic effect in a Weyl semimetal

Room temperature polariton lasing in quantum heterostructure nanocavities

Electrical tuning of exciton-plasmon polariton coupling in monolayer MoS2 integrated with plasmonic nanoantenna lattice

Strain Multiplexed Metasurface Holograms on a Stretchable Substrate

Inverting polar domains via electrical pulsing in metallic germanium telluride

Silicon Nanophotonics: Turn off the dark

Voltage-tunable circular photogalvanic effect in silicon nanowires

Silicon coupled with plasmon nanocavities generates bright visible hot luminescence

All-optical active switching in individual semiconductor nanowires

Electrical Wind Force–Driven and Dislocation-Templated Amorphization in Phase-Change Nanowires

Tailoring hot-exciton emission and lifetimes in semiconducting nanowires via whispering-gallery nanocavity plasmons

One-dimensional polaritons with size-tunable and enhanced coupling strengths in semiconductor nanowires

High Resolution Transmission Electron Microscopy Study of Electrically-Driven Phase Change Phenomena in Ge2Sb2Te5 Nanowires

Incorporating Polaritonic Effects in Semiconductor Nanowire Waveguide Dispersion

Nanowire Transformation by Size-Dependent Cation Exchange Reactions

Ritesh Agarwal Receives 2010 NIH New Innovator Award

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.