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RISS 인기검색어
- 검색키워드
- 저자 : Suman Lata (검색결과 4 건)
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A Journey from Bulk MOSFET to 3 nm and Beyond
Asharani Samal,Suman Lata Tripathi,Sushanta Kumar Mohapatra 한국전기전자재료학회 2020 Transactions on Electrical and Electronic Material Vol.21 No.5
To overcome scaling issues such as controlling gate leakage, drain induced barrier lowering, higher subthreshold conduction, polysilicon gate depletion, and other short channel eff ects various engineering proposed. The gate dielectric, metal work function, and device structural engineering enabled the semiconductor industry to make a transition from the conventional planar MOSFET towards a revolutionary 3D tri-gate structure called FinFET. FinFET is one of the fundamental invention in the semiconductor industry, which replaced the planar CMOS technology around 22 nm technology. By following Moore’s law, it accelerated the scaling to 7 nm, but at 5 nm, in the same way, GAAFET replaced FinFET due to technological hurdles. Nanosheet, which is one type of GAAFET are in the recent trend. But researchers are trying to explore the possibilities to continue the miniaturization beyond 3 nm by combining the eff ect of non-silicon channel material such as Ge, InGaAs, or 2D materials with nanosheet, which will improve the functionality of the device while going down in the technology node. In this survey, an attempt has been made for the structure present till 7 nm process. Also, a few new proposals in research to take the scaling up to 3 nm and beyond are included. The future innovations may put an intercept on the slowing down of Moore’s law, and bring the miniaturization back in the track.
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Pooja Prasad,Suman Lata,Sanjeev Kumar Gupta,Pawan Kumar,Rekha Saxena,Deepak Kumar Arya,Himmat Singh 한국역학회 2023 Epidemiology and Health Vol.45 No.-
OBJECTIVES: Dengue is a mosquito-borne viral disease globally transmitted by Aedes aegypti. The most effective method to prevent the transmission of the disease is proficient vector control. Understanding the breeding behaviour of the responsible vectors is very pertinent in this regard; therefore, the present study was conducted to understand Ae. aegypti behaviour regarding the selection of containers for oviposition in the megacity of Delhi. METHODS: A household survey in different localities within Delhi was carried out during 2018-2019. All available containers were inspected for the presence of immature Ae. aegypti. In entomological surveillance, the ovipositional preference of Aedes was computed using the breeding preference ratio, container index in the field, and laboratory settings, and associations of dengue cases with monthly variation in environmental factors and container type were also calculated. RESULTS: The household larval survey in 40 localities showed that 40% of 27,776 water-holding containers in 3,400 houses were plastic, followed by overhead tanks (26.2%), and coolers (12.1%). The most preferred breeding habitat was clay pots (9.3%), followed by metallic containers (8.5%) and solid waste (7.1%). A laboratory-based study showed that Aedes preferred clay containers (81.8%) over 4 other types of containers (plastic, paper, metal, and glass). CONCLUSIONS: The present study provides a rationale for using clay containers as a possible surveillance tool (ovitraps) or as a vector control tool. This information might aid researchers in developing novel traps and targeting preferred containers for larval control activities during transmission and non-transmission seasons.
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Saini, Nisha,Kumar, Rajeev,Lgaz, Hssane,Salghi, Rachid,Chung, Ill-Min,Kumar, Sumit,Lata, Suman Elsevier 2018 Journal of molecular liquids Vol.269 No.-
<P>Corrosion protective performance of commercial mild steel (soft steel) by urispas drug was evaluated by gravimetric measurements, potentiostatic polarization and electrochemical impedance spectroscopy in 1 M H2SO4 solution. The results indicate that urispas acts as quite a good corrosion constraint for mild steel exhibiting 97.85% inhibition efficiency at 150 ppm of the drug at 303 K on polarizing it electrochemically which is a quite minified amount of urispas. Weight loss study also shows that inhibition efficiency gets optimized at 150 ppm of the drug molecule at lower temperature. Polarization curves depict that the drug acts as a mixed type inhibitor. The results of electrochemical impedance spectroscopy (EIS) indicate that the charge transfer phenomenon controlled the corrosion reaction. The morphological behavior of the uncorroded and corroded coupons was investigated by scanning electron microscopy and atomic force microscopy studies. The mechanism of adsorption from the variation of inhibition effectiveness with kinetic and activation parameter through Langmuir, Freundlich, Frumkin and Flory-Huggins isotherm, put forward a significant physiochemical mode of interaction of the drug on the metal surface. The outcomes obtained from all the experimental techniques and the information obtained via molecular dynamics (MD) and density functional theory (DFT) evaluation are in good correlation. (C) 2018 Elsevier B.V. All rights reserved.</P>
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Choi, Eun-Mi,Fix, Thomas,Kursumovic, Ahmed,Kinane, Christy J,Arena, Darí,o,Sahonta, Suman-Lata,Bi, Zhenxing,Xiong, Jie,Yan, Li,Lee, Jun-Sik,Wang, Haiyan,Langridge, Sean,Kim, Young-Min,Borisevich John WileySons, Ltd 2014 Advanced Functional Materials Vol.24 No.47
<P>Highly strained films of BiFe<SUB>0.5</SUB>Mn<SUB>0.5</SUB>O<SUB>3</SUB> (BFMO) grown at very low rates by pulsed laser deposition were demonstrated to exhibit both ferrimagnetism and ferroelectricity at room temperature and above. Magnetisation measurements demonstrated ferrimagnetism (<I>T<SUB>C</SUB></I> ∼ 600K), with a room temperature saturation moment (<I>M<SUB>S</SUB></I>) of up to 90 emu/cc (∼ 0.58 <I>μ<SUB>B</SUB></I>/f.u) on high quality (001) SrTiO<SUB>3</SUB>. X-ray magnetic circular dichroism showed that the ferrimagnetism arose from antiferromagnetically coupled Fe<SUP>3+</SUP> and Mn<SUP>3+</SUP>. While scanning transmission electron microscope studies showed there was no long range ordering of Fe and Mn, the magnetic properties were found to be strongly dependent on the strain state in the films. The magnetism is explained to arise from one of three possible mechanisms with Bi polarization playing a key role. A signature of room temperature ferroelectricity in the films was measured by piezoresponse force microscopy and was confirmed using angular dark field scanning transmission electron microscopy. The demonstration of strain induced, high temperature multiferroism is a promising development for future spintronic and memory applications at room temperature and above.</P>
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