S
Sameer Walavalkar
Researcher at California Institute of Technology
Publications - 34
Citations - 1056
Sameer Walavalkar is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Nanopillar & Silicon. The author has an hindex of 12, co-authored 34 publications receiving 978 citations.
Papers
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Journal ArticleDOI
Frequency tunable near-infrared metamaterials based on VO2 phase transition.
Matthew J. Dicken,Koray Aydin,Imogen M. Pryce,Luke A. Sweatlock,Elizabeth M. Boyd,Sameer Walavalkar,James M. Ma,Harry A. Atwater +7 more
TL;DR: In this paper, an Ag split ring resonator (SRR) is patterned with e-beam lithography onto planar VO_2 and etched via reactive ion etching to yield Ag/VO_2 hybrid SRRs.
Journal ArticleDOI
Alumina Etch Masks for Fabrication of High-Aspect-Ratio Silicon Micropillars and Nanopillars
TL;DR: Using sputtered aluminum oxide (alumina) as a resilient etch mask for fluorinated silicon reactive ion etches and fabrication of high-aspect-ratio silicon micropillars and nanopillars is introduced.
Journal ArticleDOI
Tunable Visible and Near-IR Emission from Sub-10 nm Etched Single-Crystal Si Nanopillars
Sameer Walavalkar,Carrie E. Hofmann,Andrew P. Homyk,M. David Henry,Harry A. Atwater,Axel Scherer +5 more
TL;DR: Visible and near-IR photoluminescence (PL) is reported from sub-10 nm silicon nanopillars, which show promise as possible complementary metal oxide semiconductor compatible silicon devices in the form of light-emitting diode or laser structures.
Patent
Chemical sensing and/or measuring devices and methods
TL;DR: In this article, the authors describe methods for fabricating silicon nanowire chemical sensing devices, devices thus obtained, and methods for utilizing devices for sensing and measuring chemical concentration of selected species in a fluid.
Journal ArticleDOI
Size Tunable Visible and Near-Infrared Photoluminescence from Vertically Etched Silicon Quantum Dots
Sameer Walavalkar,Andrew P. Homyk,Carrie E. Hofmann,M. David Henry,Claudia Shin,Harry A. Atwater,Axel Scherer +6 more
TL;DR: In this article, the authors used corrugated etching techniques to fabricate size-tunable silicon quantum dots that luminesce under photoexcitation, tunable over the visible and near infrared.