R. K. Sharma

NIMS University

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Raghvendra Sahai Saxena

Solid State Physics Laboratory

R. K. Bhan

Defence Institute of Physiology and Allied Sciences

R. Pal

Solid State Physics Laboratory

D. M. Smyth

Lehigh University

N.‐H. CHAN

Lehigh University

Rachna Manchanda

Solid State Physics Laboratory

B. L. Sharma

Alpha Omega Alpha Medical Honor Society

Radheshyam Nokhwal

University of Delhi

Jon W. Wallace

Sandia National Laboratories

L. Sareen

Solid State Physics Laboratory

Cooperative Institutions

Solid State Physics Laboratory

NIMS University

University of Delhi

Banaras Hindu University

Indian Institute of Technology Delhi

Institute of Medical Sciences

Bhabha Atomic Research Centre

Technische Universität Ilmenau

Indian Institute of Science Bangalore

Nanaji Deshmukh Veterinary Science University

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Hg/Cd Interdiffusion in Thin CdTe Film on HgCdTe Epilayer

Environmental science and engineering (2013)

Tapasya Jain Anuradha Dhaul Rachna Manchanda Shiv Kumar O. P. Thakur

Cadmium telluride photovoltaics

Passivation

Mercury cadmium telluride

10.1007/978-3-319-03002-9_225

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Impact of Quantization Noise Errors in FPGA Based WLAN Timing Synchronization with the Schmidl and Cox Algorithm

2022 IEEE International Symposium on Circuits and Systems (ISCAS) (2021)

Jorge Torres Gómez Liset Martínez Marrero Matthias J. Koepp R. K. Sharma

The implementation of accurate solutions to synchronize the transceiver's clocks in real-time operations plays a major role in the current development of communication systems. Considering the orthogonal frequency division multiplexing (OFDM)-based systems, adopted for the deployment of fifth- generation mobile networks (5G), industrial networks, and the wireless local area network (WLAN) standard, several reported solutions focus on field-programmable gate array (FPGA) designs for the clock synchronization in real-time operations. However, reported solutions describe with minor details the impact of the introduced quantization noise error (QNE) based on the implemented bit-width. Their studies provide insights to implement digital solutions of reduced complexity. The current article provides theoretical expressions to characterize accuracy and precision while synchronizing the transmitter's clock. The presented analysis is intended to support designers to evaluate the clock synchronization design considering the bit-width for implementing the given system.

Synchronizing

10.1109/iscas51556.2021.9401686

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Bit error rate and efficiency analysis of wireless reciprocal channel key generation

IEEE International Conference on Wireless Information Technology and Systems (2010)

R. K. Sharma Jon W. Wallace

This paper has computed the bit error rate (BER) performance of two practical key generation methods CQG and CQA considering Gray coded mapping. An improved efficiency metric was also presented that gives a more realistic indication of key generation performance.

Key generation

Reciprocal

10.1109/icwits.2010.5612262

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Citations (3)

Machine Learning & Neural Networks

R. K. Sharma Mia Tang

course Share on Machine Learning & Neural Networks Authors: Rajesh Sharma View Profile , Mia Tang View Profile Authors Info & Claims SIGGRAPH '23: ACM SIGGRAPH 2023 CoursesJuly 2023Article No.: 9Pages 1–130https://doi.org/10.1145/3587423.3595530Published:24 July 2023Publication History 0citation210DownloadsMetricsTotal Citations0Total Downloads210Last 12 Months210Last 6 weeks200 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access

10.1145/3587423.3595530

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Evaluation of B+-implanted n+-n-p HgCdTe structures using transient microwave reflectance

Journal of Applied Physics (2009)

Rachna Manchanda R. Pal Anwaar Ellahi Malik Raghvendra Sahai Saxena O. P. Thakur

Transient microwave reflectance (TMWR) has been used to investigate the n+-n-p HgCdTe structures formed by B+ implantation and moderate annealing. Vacancy-doped p-type bulk HgCdTe (x∼0.285) crystals were used in this work. 130 keV B+ ions were implanted at a dose of 1×1014 cm−2. Samples were successively thinned through etching in 0.5% Br2 in CH3OH solutions with a standardized procedure for differential Hall/resistivity measurements. At every differential etch step, the TMWR signal was also recorded and theoretically analyzed for estimating bulk lifetime and surface recombination velocity. Results for as-implanted as well as moderately annealed samples have been presented. The study indicated the usefulness of TMWR analysis in evaluating implant anneal process for the formation of n+-n-p HgCdTe structures for photodetector fabrication.

Carrier lifetime

10.1063/1.3204470

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Citations (1)

Physical-Layer Key Generation and Reconciliation

Signals and communication technology (2016)

Jon W. Wallace Rashid Mehmood R. K. Sharma Werner Henkel Oana Graur

Key generation

Guard (computer science)

Robustness

10.1007/978-3-319-22440-4_17

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Cyclic nanoindentation studies of HgCdTe epitaxial films

Materials Research Express (2020)

Hemant Kumar Sharma R. K. Sharma Raghvendra Sahai Saxena Aditya Gokhale Rajesh Prasad

Abstract Hg 1− x Cd x Te ( x ∼0.29) epitaxial films have been subjected to cyclic nanoindentation using spherical indenter from tribological aspects related to the development of polishing process for preparing defect free surface. Different loading/unloading rates of 0.5, 1 and the 4 mNs −1 with a peak load of 10 mN were used for 10 nanoindentation cycles. An open jaw shape was observed in the load-displacement curve for loading/unloading rate of 0.5 mNs −1 , while hysteresis loops were observed for 1 and 4 mNs −1 loading/unloading rates. This phenomenon is explained in light of the regimes of elastic/anelastic deformation and smooth plastic flow. Pop-in during first loading cycle was observed at loading/unloading rates of 1 and 4 mNs −1 , which was attributed to elasto-plastic transition. Multiple pop-in events of low extent were also found in the form of serrations in load-displacement curves for loading/unloading rates of 0.5 and 1 mNs −1 . Based on these observations, the maximum load and minimum loading rate during polishing process for this material has been suggested. The mechanical properties of these films, such as contact stiffness and hardness have been extracted for different loading/unloading rates. The effect of indenter geometry on deformation behaviour using Berkovich indenter is also reported.

Hysteresis

10.1088/2053-1591/ab688e

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Citations (4)

Promoting Pharmacovigilance: A Review on Significance and Imperative for Establishing Regional Reporting Centres for Adverse Drug Reactions (Adrs)

Current Indian Science (2024)

Junaid Tantray Akhilesh Patel Syed Arshad Hussain Sanjay Nagdev Vishal Tatwal

: The review explores the vital dimensions of pharmacovigilance (PV) and adverse drug reaction (ADR) reporting in the healthcare industry, highlighting their importance for public health and patient safety. The review follows the development of PV from its historical beginnings in India, highlighting significant turning points and legislative frameworks that have influenced modern practices. Sibutramine, a well-known medication, is investigated to highlight the significance of watchful PV systems. Meanwhile, ADR reporting is significant in healthcare because it directly impacts public health and patient safety. However, there is still a need to address issues like healthcare providers' ignorance and underreporting. The suggested solution is to establish Regional Reporting Centres (RRCs), with successful models demonstrating the benefits they provide, including improved data collection and regional assistance. Despite the advantages, setting up RRCs has its share of difficulties, such as coordination and resource allocation. Effective RRC implementation improves ADR reporting, as shown by case studies and success stories. In order to improve ADR reporting and PV procedures, the research ends with suggestions for the future that call for more regulatory assistance, more training for healthcare workers, and public awareness campaigns.

Drug reaction

Adverse drug reaction

10.2174/012210299x326236240821113120

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Radial artery in CABG: could the early results be comparable to internal mammary artery graft?

The Annals of Thoracic Surgery (1999)

Anil Bhan Vivek Gupta Shiv Kumar Choudhary R. K. Sharma Balbir Singh

Mammary artery

10.1016/s0003-4975(99)00223-4

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Citations (76)

Cathodoluminescence Studies of Nanoindented CdZnTe Single Crystal Substrates for Analysis of Residual Stresses and Deformation Behaviour

Defence Science Journal (2020)

Hemant Kumar Sharma Raghvendra Sahai Saxena Aditya Gokhale A. K. Kapoor Rajesh Prasad

Nanoindentation-induced residual stresses were analysed on (111) Te face CdZnTe single-crystal substrates in this study. CdZnTe substrates were subjected to nanoindentation using cube corner indenter geometry with a peak load of 10 mN. Loading rates of 1 mN/s and 5 mN/s were used in the experiments, with a holding time of 10 s at peak load. Residual stresses on the indented region were analysed from load-displacement curves and explained using dislocation generation and elastic recovery mechanisms. Residual stresses were found to be of compressive type, just on the indented surface. The slip lines along the slip directions of this material were clearly visible in the FE-SEM images of the indents. Indents and surrounding surfaces were characterized using the Cathodoluminescence (CL) technique. CL mapping of the indented surface revealed the dislocation generation and their propagation behaviour just beneath the indenter as well as in the surrounding surfaces. The dislocations act as non-radiative recombination centres and quench the CL intensity locally. Dark lines were explained as the presence of dislocations in the material. CL mapping analysis shows that both the rosette glide and tetrahedral glide of dislocations are the primary deformation mechanisms present in CdZnTe. A rosette structure was observed in the CL mapping. CL spectra at 300 K of un-deformed CdZnTe show a peak at 810 nm wavelength, which corresponds to near-band-edge emission. After indentation, the CL spectra show the peak intensity at 814 nm and 823 nm wavelengths at the edge of the indents created with a loading rate of 1 mN/s and 5 mN/s, respectively. These peak shifts from 810 nm were attributed to the tensile residual stresses present in the indented material.

Cathodoluminescence

Indentation

Lüders band

Deformation bands

Crystal (programming language)

10.14429/dsj.70.16383

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Citations (2)