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High performance 20 nm GaSb/InAs junctionless tunnel field effect transistor for low power supply

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Journal of Semiconductors 2015年第2期36卷 56-61页

作者： pranav kumar Asthana Department of Electrical Engineering Indian Institute of Technology Kanpur

We present a GaSb/In As junctionless tunnel FET and investigate its static device characteristics. The proposed structure presents tremendous performance at a very low supply voltage of 0.4 V. The key idea is to the present device architecture, which can be exploited as a digital switching device for sub 20 nm *** simulations resulted in an IOFF of 8×10^-17A/ m, ION of 9 A/ m, ION/IOFF of 1×10^11,subthreshold slope of 9.33 m V/dec and DIBL of 87 m V/V for GaSb/InAs JLTFET at a temperature of 300 K,gate length of 20 nm, HfO2 gate dielectric thickness of 2 nm, film thickness of 10 nm, low-k spacer thickness of 10 nm and VDD of 0.4 V.

关键词： band tunneling (BTBT) tunnel field effect transistor (TFET) junctionless tunnel field effect transistor(JLTFET) ION/IOFF ratio low power digital switching

Dynamic threshold voltage operation in Si and SiGe source junctionless tunnel field effect transistor

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Journal of Semiconductors 2014年第11期35卷 32-39页

作者： Shibir Basak pranav kumar Asthana Yogesh Goswami Bahniman Ghosh Department of Electrical Engineering Indian Institute of Technology Kanpur Microelectronics Research Center 10100Burnet RoadBldg.160University of Texas at Austin

We propose a dynamic threshold voltage j unctionless tunnel FET （DT-JLTFET） in wnlcn me mresnolu voltage can be dynamically adjusted, resulting in higher ON-current. Through 2D numerical simulations, it is presented that the threshold voltage in the DT-JLTFET can be adjusted by applying a voltage to the adjust gate. The impact of the threshold voltage shift on the overall performance of the device is also studied. A comparison is made between the dynamic threshold voltage characteristics of a silicon JLTFET and a Sio.7Geo.3 source JLTFET.

关键词： SiGe tunnel field effect transistor ON-current

A novel sub 20 nm single gate tunnel field effect transistor with intrinsic channel for ultra low power applications

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Journal of Semiconductors 2016年第5期37卷 30-34页

作者： pranav kumar Asthana Yogesh Goswami Bahniman Ghosh Department of Electrical Engineering Indian Institute of Technology Kanpur Microelectronics Research Center University of Texas at Austin

We propose a nanoscale single gate ultra thin body intrinsic channel tunnel field effect transistor using the charge plasma concept for ultra low power applications. The characteristics of TFETs （having low leakage） are improved by junctionless TFETs through blending advantages of Junctionless FETs （with high on current）. We further improved the characteristics, simultaneously simplifying the structure at a very low power rating using an InAs channel. We found that the proposed device structure has reduced short channel effects and parasitics and provides high speed operation even at a very low supply voltage with low leakage. Simulations resulted in Iovv of - 9 × 10-16A/um, IoN of ,-20uA/um, ION/IoFF of--2× 1010, threshold voltage of 0.057 V, subthreshold slope of 7 mV/dec and DIBL of 86 mV/V for PolyGate/HfO2/InAs TFET at a temperature of 300 K, gate length of 20 nm, oxide thickness of 2 nm, film thickness of 10 nm, low-k spacer thickness of 10 nm and VDD of 0.2 V.

关键词： band-to-band tunneling (BTBT) tunnel field effect transistor (TFET) junctionless tunnel field effecttransistor (JLTFET) ION/IOFF ratio low power

Mechanism of Action of Natural Products Used in the Treatment of Diabetes Mellitus

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Chinese Journal of Integrative Medicine 2011年第8期17卷 563-574页

作者： pranav kumar Prabhakar Mukesh Doble Department of Biotechnology Indian Institute of Technology Madras

Diabetes mellitus（DM） is a metabolic disorder caused by insufficient or inefficient insulin secretary response and it is characterized by increased blood glucose levels（hyperglycemia）.DM is a heterogonous group of *** is the main energy source for the body,and in the case of DM,management of glucose becomes *** are three key defects in the onset of hyperglycemia in DM,namely increased hepatic glucose production,diminished insulin secretion, and impaired insulin *** drugs treat diabetes by improving insulin sensitivity,increasing insulin production and/or decreasing the amount of glucose in *** article provides a comprehensive review of the mode of action of most popular hypoglycemic herbs,such as ginseng,bitter melon,fenugreek,banaba, Gymnema sylvestre and Coptis *** herbs act by increasing insulin secretion,enhancing glucose uptake by adipose and skeletal muscle tissues,inhibiting intestinal glucose absorption and inhibiting hepatic glucose *** evidence from animals and humans consistently supports the therapeutic effect of these phytomedicines,multicenter large-scale clinical trials have not been conducted to evaluate the safety and efficacy of these herbal medicines and their interaction with conventional drugs when administered simultaneously.

关键词： hyperglycemia medicinal plants ginseng bitter melon fenugreek banaba

CFOA Based Low Pass and High Pass Ladder Filter—A New Configuration

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Circuits and Systems 2014年第12期5卷 293-300页

作者： Praween K. Sinha Akshay Saini pranav kumar Sumit Mishra Electronics and Communication Department Maharaja Agrasen Institute of Technology New Delhi India Electronics and Communication Department University School of Information and Communication Technology New Delhi India Techno Scientific Inc. Concord Canada

A new technique using signal flow graph for conversion of ladder based filter into CFOA based filter has been proposed. The proposed technique converts the existing LC ladder based filter into CFOA in low pass and high pass configuration. The design of low pass filter and high pass filter has been realized using the proposed technique. The proposed configuration is implemented using CFOA as an active device and all the capacitors are grounded. Simulation has been carried out using simulation software I-cap. The simulation results have been demonstrated and discussed.

关键词： CFOA-Current Feedback Operational Amplifier Ladder Filter Signal Flow Graph Current Mode Voltage Mode High Pass Filter Low Pass Filter

Characterization of Intracellular Gold Nanoparticles Synthesized by Biomass of Aspergillus terreus

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Acta Metallurgica Sinica(English Letters) 2014年第4期27卷 569-572页

作者： Baskar Gurunathan pranav Vasanthi Bathrinarayanan Vasanth kumar Muthukumarasamy Dilliganesh Thangavelu Department of Biotechnology St.Joseph’s College of EngineeringChennai 600 119India

Greener synthesis of nanoparticle is a revolutionizing area in research *** method of reduction of metal ions is often preferred because they are clean,safe,biocompatible,and environmentally acceptable than physical,chemical,and mechanical *** wet biomass of Aspergillus terreus（***） was utilized for the intracellular synthesis of gold *** nanoparticles were produced when an aqueous solution of chloroauric acid was reduced by *** biomass as the reducing *** of gold nanoparticles was confirmed by the color change of biomass from yellow to pinkish *** produced nanoparticles were then characterized by FT-IR,SEM,EDS,and *** SEM images revealed that the nanoparticles were spherical,irregularly shaped with no definite *** size of the biosynthesized gold nanoparticles was 186 *** presence of the gold nanoparticle was confirmed by EDS *** nature of synthesized gold nanoparticle was confirmed by XRD pattern.

关键词： Gold nanoparticles Biosynthesis Characterization Scanning electron microscope Energy dispersive spectroscopy

Phloroglucinol, a nutraceutical for IR-induced cardiac damage in diabetic rats

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Animal Models and Experimental Medicine 2019年第3期2卷 210-216页

作者： B.pranav Nayak K.R.Ganesha Nathani Minaz Rema Razdan Sumanta kumar Goswami Department of Pharmacology Al‐Ameen College of PharmacyBengaluruKarnatakaIndia Department of Pharmaceutical sciences Northeastern UniversityBostonMAUSA

Background:Myocardial injury due to ischemia‐reperfusion(IR)is aggravated in diabetes which is associated with oxidative *** oxidative stress via use of antioxidants has been shown to be effective at minimizing myocardial cell death and improving cardiac *** aim of the present study was to evaluate the cardioprotective effect of phloroglucinol against myocardial reperfusion injury(MRI)in diabetic ***:Diabetes was induced in female rats with streptozotocin(50 mg/kg).The diabetic rats were orally treated with phloroglucinol(100 and 200 mg/kg daily for 28 days).After treatment the hearts were isolated and mounted on a Langendorff *** hearts were subjected to 15 minutes of IR to induce myocardial *** functions including heart rate(HR),resting and developed tension,and rate of change of contraction(+dP/dtmax)were *** injury biomarkers lactate dehydrogenase(LDH)and creatine kinase(CK‐MB)were measured in the heart *** of the antioxidant enzymes reduced glutathione(GSH)and malondialdehyde(MDA)were *** and eosin(H&E)staining was also ***:After IR injury,a decrease in HR and+dP/dtmax in hearts from diabetic rat was seen compared to healthy rat hearts,which was reversed by phloroglucinol *** infarct size,measured by H&E staining,was increased in diabetic rats compared to healthy rats and an increase in the activity of LDH and CK‐MB in the heart perfusate in diabetic rats was decreased by phloroglucinol *** increase in MDA levels and a decrease in levels of antioxidant enzymes were observed in diabetic rats,which was reversed with phloroglucinol ***:Phloroglucinol treatment has potential therapeutic promise in the treatment of MRI in diabetes.

关键词： Langendroff apparatus myocardial reperfusion injury phloroglucinol streptozotocin

Oldest Asian Record of Snapping Shrimps(Malacostraca:Alpheidae)from the Kutch Basin,Western India and Associated Biota:Biostratigraphic,Paleoenvironmental and Paleoecological Significance

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Acta Geologica Sinica(English Edition) 2022年第6期96卷 1867-1883页

作者： Vivesh V.KAPUR Kamlesh kumar pranav J.PANDYA Amit KGHOSH Arindam CHAKRABORTY Anupam SHARMA Gaurav CHAUHAN M.G.THAKKAR Birbal Sahni Institute of Palaeosciences 53University RoadLucknow 226007India Department of Biology Shri R.R.Lalan CollegeBhujKachchh DistrictGujaratIndia Institute of Earth Sciences Academia SinicaTaipeiTaiwan 11529China Department of Earth and Environmental Science K.S.K.V.Kachchh UniversityBhujKachchh DistrictGujaratIndia

The oldest Asian record of alpheid shrimps,assigned to genus Alpheus,based on snapping claw fingertips from the Miocene Khari Nadi Formation in the Kutch Basin,western India reported herein,extends the fossil record of the family Alpheidae from Asia by~22 million *** early Miocene(Aquitanian)age is estimated based on the associated assemblage of calcareous nannofossils,Sphenolithus disbelemnos,Cyclicargolithus floridanus,and Reticulofenestra *** co-occurring microbiota includes bony fish otolith remains,identified as“genus Gobiidarum”,isolated teeth of Dasyatis rays,Sphyrna sharks,and teleosts,ctenoid and placoid scales,ostracods,belonging to the genera Paractinocythereis,Alocopocythere,Ruggieria,Aglaiocypris,Bairdoppilata,and echinoid *** together,the microfossil assemblage and data from chemical analyses using Energy Dispersive Spectroscopy,X-Ray Diffraction and Wavelength Dispersive X-Ray Fluorescence of host and associated lithologies suggests prevalence of a shallow(neritic)to coastal marine(intertidal)depositional *** present investigation also provides the oldest fossil evidence on the co-occurrence of Alpheus and gobiids(based on otoliths)that strongly advocates that the mutualistic association between these animal groups had developed by the Aquitanian.

关键词： biostratigraphy Crustacea Caridea Elasmobranchs Gobiidae invertebrate and vertebrate paleontology nannofossils Oligocene-Miocene Indian subcontinent

白内障合并翼状胬肉患者行联合手术后的疗效观察

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国际眼科杂志 2021年第12期21卷 2021-2025页

作者： Kshama Dwivedi Dawar Shuja pranav Saluja Mayank Srivastava Santosh kumar Sanchita Saini Moti Lal Nehru医学院眼科印度普拉亚格拉杰211001

目的:观察白内障合并翼状胬肉患者行联合手术后的疗效。方法:对22例(平均年龄:59.05±8.70岁)并发白内障和翼状胬肉(长度2-5mm)患者进行前瞻性单中心研究,随访时间为3mo~1a。测定术前和术后3mo的平均角膜曲率(Kmean)、平均散光和最佳矫... 详细信息

目的:观察白内障合并翼状胬肉患者行联合手术后的疗效。方法:对22例(平均年龄:59.05±8.70岁)并发白内障和翼状胬肉(长度2-5mm)患者进行前瞻性单中心研究,随访时间为3mo~1a。测定术前和术后3mo的平均角膜曲率(Kmean)、平均散光和最佳矫正视力(LogMAR)。观察术前角膜曲率和翼状胬肉大小与预测误差的关系。结果:共18例(81.8%)患者PE1.00D的患者。手术前后眼轴长度无差异(P=0.77)。Kmean从术前42.994±1.536增加到术后43.324±1.479(P=0.105)。术后角膜散光由术前2.09±0.789D降至术后0.523±0.277D(P<0.05)。BCVA(LogMAR)从术前1.007±0.402显著提高到术后0.024±0.062(P<0.05)。角膜曲率变化与预测误差无相关性(r=-0.29,P=0.19)。翼状胬肉大小与预测误差无相关性(r=0.2997,P=0.17)。结论:超声乳化与折叠式人工晶状体植入联合自体结膜移植术的应用是一种安全有效的手术方法。

关键词：并发白内障和翼状胬肉人工晶状体屈光度计算超声乳化联合自体结膜移植术的应用