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Department of Electrical and Electronics Engineering: Recent submissions

Now showing items 441-460 of 1659

Sub-50-mV Nanoelectromechanical Switch Without Body Bias

Rao, V. Ramgopal (IEEE, 2020-09)

This brief presents a fabricated and characterized 3-terminal (3T) nanoelectromechanical switch (NEMS) featuring for the first time a sub-50-mV pull-in voltage operation without body biasing. The proposed NEMS demonstrates ...
Ultra-sensitive gas phase detection of 2,4,6-trinitrotoluene by non-covalently functionalized graphene field effect transistors

Rao, V. Ramgopal (RSC, 2020)

The high energy density (4.2 MJ kg−1) and low vapour pressure (7.2 × 10−9 atm) of chemical explosives such as TNT (2,4,6-trinitrotoluene) pose a grave security risk demanding immediate attention. Detection of such hazardous ...
A study of surface stress and flexural rigidity of symmetrically and asymmetrically biofunctionalized microcantilevers

Rao, V. Ramgopal (IOP, 2020-01)

Dynamic sensing using microcantilevers has held the centre stage for a long time in biomolecular detection. In this work, we have reported a comparative study of dynamic responses of asymmetric (top or bottom surface) and ...
A Passive Gamma Radiation Dosimeter Using Graphene Field Effect Transistor

Rao, V. Ramgopal (IEEE, 2020-03)

In this work, Graphene-based field-effect transistors (GFETs) are demonstrated as a highly sensitive dosimeter for gamma radiation. Graphene-based field-effect transistors exhibit p-type doping with the Dirac point shifting ...
Piezoresistance in ballistic graphene

Rao, V. Ramgopal (APS, 2019-12)

We investigate the longitudinal and transverse piezoresistance effect in suspended graphene in the ballistic regime. Utilizing parametrized tight-binding Hamiltonian along with Landauer quantum transport formalism, we ...
Microcantilever Based Dual Mode Biosensor for Agricultural Applications

Rao, V. Ramgopal (IEEE, 2020-07)

With the aim of increasing crop yields, guiding precision farming applications and for more sustainable disease management practices development of early diagnostics sensors for pathogens in agriculture is vital. A sensitive ...
Surface Modification of AlN Using Organic Molecular Layer for Improved Deep UV Photodetector Performance

Rao, V. Ramgopal (ACS, 2020-02)

A direct wide bandgap of 6.2 eV, high temperature robustness, and radiation hardness make aluminum nitride (AlN) a preferable semiconductor for deep ultraviolet (UV) photodetection. However, the performance and reliability ...
Non-Volatile Organic Transistor Memory Based on Black Phosphorus Quantum Dots as Charge Trapping Layer

Rao, V. Ramgopal (IEEE, 2020-06)

High performance organic nano-floating gate transistor memory (NFGTM) has important prerequisites of low processing temperature, solution-processable layers and charge trapping medium with high storage capacity. We demonstrate ...
Effect of Device Dimensions, Layout and Pre-Gate Carbon Implant on Hot Carrier Induced Degradation in HKMG nMOS Transistors

Rao, V. Ramgopal (IEEE, 2020-07)

The hot carrier (HC) induced degradation has become a major concern in advanced CMOS technologies because of non-scalable V DD . In this work, we have shown that the HC induced degradation in gate-first HKMG nMOS transistors ...
Switched-Capacitor-Assisted Power Gating for Ultra-Low Standby Power in CMOS Digital ICs

Rao, V. Ramgopal (IEEE, 2020-12)

This article presents Switched-Capacitor assisted Power Gating (SwCap PG) for reducing the leakage currents of large digital circuits. For the first time, PG switch is biased in the super turn-off and the super turn-on ...
Stand-by Power Reduction Using Experimentally Demonstrated Nano-Electromechanical Switch in CMOS Technologies

Rao, V. Ramgopal (IEEE, 2021-02)

In this article, we demonstrate a double-clamped nano-electromechanical switch (NEMS) with low stand-by power as an effective solution to the leakage issues in scaled CMOS-based power gating (PG) in logic circuits. The ...
Hybrid Pattern Recognition for Rapid Explosive Sensing With Comprehensive Analysis

Rao, V. Ramgopal (IEEE, 2021-03)

This paper presents a hybrid pattern recognition with temperature compensation (HPR-TC) used within an E-Nose system. HPR-TC with E-nose has the novelty, amongst MEMS sensor platforms, of having two modes of operation i.e., ...
Organic passivation of Al0.5Ga0.5N epilayers using self-assembled monolayer of Zn(II) porphyrin for improved solar-blind photodetector performance

Rao, V. Ramgopal (IOP, 2021-03)

We report on the passivation of surface states of Al0.5Ga0.5N epilayers by employing self-assembled monolayers (SAMs) of organic molecules, which led to a significant improvement in the performance of Al0.5Ga0.5N based ...
Nanophotonic Crystal Waveguide With Embedded Piezoresistor on MEMS Cantilever for Sensing Application

Rao, V. Ramgopal (IEEE, 2021-06)

Micro-Electro-Mechanical-System (MEMS) cantilevers are sensitive to minute changes in environmental parameters. MEMS cantilevers possess a single readout transduction mechanism like stress to frequency, resistive and ...
Efficient 1-V Boost Converter Using Sub-50-mV NEMS Without Body Bias

Rao, V. Ramgopal (IEEE, 2021-04)

In this article, for the first time, we present the improvement in efficiency in a low-voltage dc–dc boost converter for the energy-harvesting applications using the experimentally demonstrated sub-50-mV nano ...
Impact of Thermal Effects on the Performance of the Power Gating Circuits Using NEMS, FinFETs, and NWFETs

Rao, V. Ramgopal (IEEE, 2021-05)

In this article, the power gating (PG) technique is analyzed using nano-electro-mechanical switches (NEMS), FinFETs, and nanowire field-effect transistors (NWFETs). We have used detailed circuit level simulations using ...
Detection of the Chilli Leaf Curl Virus Using an Attenuated Total Reflection-Mediated Localized Surface-Plasmon-Resonance-Based Optical Platform

Rao, V. Ramgopal (ACS, 2021)

The development of a nanoparticle-based opticalplatform has been presented as a biosensor for detecting target-specific plant virus DNA. The binding dynamics of goldnanoparticles has been studied on the amine-functionalized ...
A Roadmap for Disruptive Applications and Heterogeneous Integration Using Two-Dimensional Materials: State-of-the-Art and Technological Challenges

Rao, V. Ramgopal (ACS, 2021-08)

This Mini Review attempts to establish a roadmap for two-dimensional (2D) material-based microelectronic technologies for future/disruptive applications with a vision for the semiconductor industry to enable a universal ...
Passivation of Solution-Processed a-IGZO Thin-Film Transistor by Solution Processable Zinc Porphyrin Self-Assembled Monolayer

Rao, V. Ramgopal (IEEE, 2021-11)

Bottom-gate bottom contact amorphous indium gallium zinc oxide (a-IGZO) thin-film transistors (TFTs) were fabricated using solution processing. The nonpassivated a-IGZO-TFTs exhibited a significant threshold voltage shift, ...
Charge Carrier Doping As Mechanism of Self-Assembled Monolayers Functionalized Electrodes in Organic Field Effect Transistors

Rao, V. Ramgopal (Wiley, 2021-11)

Coating electrodes with self-assembled monolayer (SAM) of polar molecules is known to reduce contact resistance (RC) in organic field effect transistors (OFETs). It is shown that the behavior of SAM in OFETs can be explained ...

Now showing items 441-460 of 1659

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