National Institute of Technology, Silchar

About: National Institute of Technology, Silchar is a education organization based out in Silchar, Assam, India. It is known for research contribution in the topics: Computer science & Control theory. The organization has 1934 authors who have published 4219 publications receiving 41149 citations. The organization is also known as: NIT Silchar.

Temperature effect on RF/analog and linearity parameters in DMG FinFET

Abstract: We systemically investigated the impact of variation in temperature on electrical parameters for a dual material gate (DMG) FinFET. We have highlighted the DC performance such as drain current characteristics, subthreshold swing (SS), and Ion/Ioff for the variation in temperature from 200 to 350 K. Furthermore, the influence of temperature on RF/Analog parameters like transconductance (gm), output conductance (gd), gate capacitance (CGG), intrinsic delay, transconductance generation factor (TGF = gm/ID), intrinsic gain (gm/gd), cutoff frequency (ft), gain frequency product (GFP), transconductance frequency product (TFP), and gain transconductance frequency product (GTFP) are presented through TCAD simulator. We also discussed the influence of temperature on linearity parameters like gm2, gm3, VIP2, VIP3, IMD3, IIP3, and 1-dB compression point. A comparative study between DMG and single material gate (SMG) FinFET is also investigated.

Glacier mass budget and climate reanalysis data indicate a climatic shift around 2000 in Lahaul-Spiti, western Himalaya

Abstract: While glacier mass changes in the Himalaya since the year 2000 are relatively well investigated, there is still a lack of knowledge about the long-term changes and their climatic drivers. We use historical and recent remote sensing data to study glacier changes of the Lahaul-Spiti region in western Himalaya, India, over the last four decades (1971–2013). The glaciers were losing mass moderately between 1971 and 1999 (− 0.07 ± 0.1 m w.e. year−1) while the losses have increased significantly after 2000 (− 0.30 ± 0.1 m w.e. year−1). During both periods, the debris-covered glaciers and glaciers having pro-glacial lakes lost more mass than glaciers with little debris cover. Mass changes of Chhota Shigri, a benchmark glacier, closely matched the average of the overall study area. Analysis of gridded climate data covering the period 1948–2015 shows that the mean annual air temperature increased, especially since 1995. One dataset shows a significant increase in summer temperature after 2000 while others do not show any trend. The mean annual precipitation started decreasing around 1995 and reached a minimum around 2000, after which it increased again. One dataset shows a significant decrease in winter precipitation after 2000 while the others show no trend. The climate data indicate that the increase in mean annual temperature from 1995, combined with no significant trend/significant decrease of winter precipitation in the period after 2000, has probably resulted in accelerated mass loss of the glaciers.

Parametric Study of Electric Discharge Coating using Powder Metallurgical Green Compact Electrodes

Abstract: This paper describes the influence of powder metallurgical (P/M) electrodes on the surface of mild steel in electric discharge machining. An attempt has been made to deposit a uniform layer of tungsten and its carbide over the mild steel substrate using P/M green compact tools by electric discharge coating process. In this experimental work, W and Cu powders of 325 mesh size have been selected as electrode material and mild steel as workpiece material. A detailed investigation of process parameters, such as composition, compaction load, current, on-time, and off-time, which influence the material transfer rate (MTR), tool wear rate, roughness, and layer thickness, has been performed. Highest MTR of 281 mg/min and LT of 1262.99 µm have been achieved successfully. The hardness of deposited layer has been measured which proves that the deposited layer is 5–6 times harder than the substrate material.