Abinash Kumar

Works (4)

Updated: September 3rd, 2024 11:44

2020 journal article

Expanding the Dimensions of a Small, Two-Dimensional Diffraction Detector

MICROSCOPY AND MICROANALYSIS, 26(5), 938–943.

By: . Chen *, M. Hauwiller *, A. Kumar*, A. Penn n & J. LeBeau*

author keywords: diffuse scattering; direct electron cameras; electron diffraction; high dynamic range
TL;DR: An approach to expand the effective number of pixels available to small, two-dimensional electron detectors by acquiring subsections of a diffraction pattern that are then accurately stitched together in post-processing is reported. (via Semantic Scholar)
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Source: Web Of Science
Added: November 2, 2020

2019 journal article

Polarization-dependent electric potential distribution across nanoscale ferroelectric Hf0.5Zr0.5O2 in functional memory capacitors

NANOSCALE, 11(42), 19814–19822.

By: Y. Matveyev *, V. Mikheev *, D. Negrov*, S. Zarubin *, A. Kumar n, E. Grimley n, J. LeBeau n, A. Gloskovskii*, E. Tsymbal *, A. Zenkevich *

TL;DR: A new methodology is developed which allows for the first time, to experimentally quantify the polarization-dependent potential profile across few-nanometer-thick ferroelectric Hf0.5Zr0. (via Semantic Scholar)
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Source: Web Of Science
Added: December 16, 2019

2019 journal article

Ultra-sensitive graphene-bismuth telluride nano-wire hybrids for infrared detection

NANOSCALE, 11(4), 1579–1586.

By: S. Islam *, J. Mishra *, A. Kumar*, D. Chatterjee *, N. Ravishankar * & A. Ghosh *

TL;DR: Graphene is sensitized with Bi2Te3 nano-wires to show an ultra-high sensitivity under incident electromagnetic radiation from 940 nm to 1720 nm, which is comparable to those of some of the best known detectors. (via Semantic Scholar)
Source: Web Of Science
Added: March 18, 2019

2018 journal article

Engineering Efficient Photon Upconversion in Semiconductor Heterostructures

ACS NANO, 13(1), 489–497.

By: C. Milleville*, E. Chen*, K. Lennon *, J. Cleveland *, A. Kumar n, J. Zhang *, J. Bork *, A. Tessier ...

author keywords: solar energy; upconversion; nanostructures; semiconductors; core/rod/emitter coupled quantum dots
TL;DR: It is demonstrated that the principles of semiconductor heterostructure engineering can be applied to engineer improved upconversion efficiency by first eliminating electron trap states near the surface of the absorbing QD and then tailor the band gap of the NR such that charge carriers are funneled to the emitting QD. (via Semantic Scholar)
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Source: Web Of Science
Added: February 11, 2019

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