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Department of Electrical and Electronics Engineering: Recent submissions

Now showing items 341-360 of 1651

Facile fabrication of graphene devices through metalloporphyrin induced photocatalytic reduction

Rao, V. Ramgopal (RSC, 2012)

Solution processed graphene oxide (GO) sheets are electronically insulating and are generally reduced by chemical treatment or heat treatment in a reducing environment to recover their electronic properties, forming reduced ...
Physical Insight Toward Heat Transport and an Improved Electrothermal Modeling Framework for FinFET Architectures

Rao, V. Ramgopal (IEEE, 2012-05)

We report on the thermal failure of fin-shaped field-effect transistor (FinFET) devices under the normal operating condition. Pre- and post failure characteristics are investigated. A detailed physical insight on the lattice ...
Solution processed photopatternable high-k nanocomposite gate dielectric for low voltage organic field effect transistors

Rao, V. Ramgopal (Elsevier, 2012-08)

We report an organic field effect transistors (OFETs) with photo-patternable, solution processed nanoparticle composite high-k gate dielectric layer. The dielectric layer consists of Barium Titanate (BT) nanoparticles ...
An organic field effect transistors-based sensing platform for environmental/security applications

Rao, V. Ramgopal (World Scientific, 2011)

Organic semiconducting material based sensors have been used for various environmental applications. Organic field effect transistors (OFETs) also find their applications in explosive vapor detection and total ionizing ...
Modification of Electronic Properties of Graphene with Porphyrin Self-Assembled Monolayers and Photoinduced Interactions

Rao, V. Ramgopal (American Scientific Publishers, 2012-07)

Solution processable reduced graphene oxide (RGO), with its unique electrical and structural properties is being considered in large scale device fabrication. The research developments in the formation and characterization ...
Effect of Central Metal Ion on Molecular Dipole in Porphyrin Self-Assembled Monolayers

Rao, V. Ramgopal (American Scientific Publishers, 2012-07)

The physical and electronic properties of nano-scale semiconductor devices are mainly decided by their surfaces and interfaces. Use of dipolar self-assembled monolayer (SAM) on semiconductor/oxide interfaces has an enormous ...
Porphyrin Self-Assembled Monolayer as a Copper Diffusion Barrier for Advanced CMOS Technologies

Rao, V. Ramgopal (IEEE, 2012-07)

This paper investigates properties of zinc porphyrin self-assembled monolayer (SAM) as a Cu diffusion barrier for advanced back-end complementary metal–oxide–semiconductor technologies. The SAM layers are integrated with ...
NEXT Fabrication of Unipolar Graphene Field-Effect Transistors by Modifying Source and Drain Electrode Interfaces with Zinc Porphyrin

Rao, V. Ramgopal (ACS, 2012)

We report a unipolar operation in reduced graphene oxide (RGO) field-effect transistors (FETs) via modification of the source/drain (S/D) electrode interfaces with self-assembled monolayers (SAMs) of 5-(4-hydroxyphenyl)- ...
Piezoresistive SU-8 Cantilever With Fe(III)Porphyrin Coating for CO Sensing

Rao, V. Ramgopal (IEEE, 2012-07)

Carbon monoxide detection is required for various healthcare, environmental, and engineering applications. In this paper, 5,10,15,20-tetra (4,5-dimethoxyphenyl)-21H,23H-porphyrin iron(III) chloride (Fe(III)porphyrin) coated ...
DC Compact Model for SOI Tunnel Field-Effect Transistors

Rao, V. Ramgopal (IEEE, 2012-10)

A physics-based dc compact model for SOI tunnel field-effect transistors (TFETs) has been developed in this paper utilizing Landauer approach. The important transistor electrical parameters, i.e., threshold voltage V th , ...
A Novel Drain-Extended FinFET Device for High-Voltage High-Speed Applications

Rao, V. Ramgopal (IEEE, 2012-10)

A novel drain-extended FinFET device is proposed in this letter for high-voltage and high-speed applications. A 2 × better R ON versus V BD tradeoff is shown from technology computer-aided design simulations for the proposed ...
Photopatternable nano-composite (SU-8/ZnO) thin films for piezo-electric applications

Rao, V. Ramgopal (AIP, 2012)

Photo-curable nanocomposite material was formulated by embedding ZnO nanoparticles into a SU-8 matrix and studied for its piezoelectric properties for low cost fabrication of self-powered nanodevices. The piezoelectric ...
Strain induced anisotropic effect on electron mobility in C60 based organic field effect transistors

Rao, V. Ramgopal (AIP, 2022-08)

The electron mobility was found to increase (decrease) upon applied compressive (tensile) strain, respectively, when a high-performance flexible C60-based organic field-effect transistor (OFET) was subjected to different ...
Comparison among different algorithms in classifying explosives using OFETs

Rao, V. Ramgopal (Elsevier, 2013-01)

Vapour phase detection of explosives using pattern recognition approaches is a very important area of research worldwide. This paper elaborates on the comparison between different algorithms in classifying empirical ...
Al-doped ZnO thin-film transistor embedded micro-cantilever as a piezoresistive sensor

Rao, V. Ramgopal (AIP, 2013-02)

In this work, an aluminium-doped zinc oxide (AZO) thin film transistor, embedded in a polymer micro-cantilever, is demonstrated for nano-mechanical sensing applications. This device senses the surface stress due to a change ...
Investigation of effects of ionizing radiation exposure on material properties of organic semiconducting oligomer – Pentacene

Rao, V. Ramgopal (Elsevier, 2013-06)

Organic semiconducting materials are known for their chemical affinity and sensitivity to environmental conditions. In this manuscript we investigate the changes in various material properties of a very well-known organic ...
Copper(II) phthalocyanine based organic electronic devices for ionizing radiation dosimetry applications

Rao, V. Ramgopal (Elsevier, 2013-05)

Effects of ionizing radiation exposure of γ-rays on the copper(II) phthalocyanine thin-films are studied using photoelectron spectroscopy techniques and electrostatic force microscopy. Based on the changes observed in the ...
Vibtrational energy harvesting using photo-patternable piezoelectric nanocomposite cantilevers

Rao, V. Ramgopal (Elsevier, 2013-09)

Here we report on fabricating photo-patternable polymer nanocomposite cantilevers for harvesting electrical energy from mechanical vibrations. The optimized piezoelectric polymer nanocomposite enables direct photo patterning ...
ZnO Nanowire Embedded Strain Sensing Cantilever: A New Ultra-Sensitive Technology Platform

Rao, V. Ramgopal (IEEE, 2013-10)

A novel ultra sensitive micro-cantilever-based technology platform was developed in this letter for strain sensing applications. Sensing mechanism is based on electrical conduction through the ZnO nanowires embedded inside ...
Sub 0.5V Operation of Performance Driven Mobile Systems Based on Area Scaled Tunnel FET Devices

Rao, V. Ramgopal (IEEE, 2013-08)

Advanced mobile applications demand low power and high performance systems. In this paper, a technology computer aided design (TCAD)-based feasibility investigation of a recently proposed area tunneling field effect ...

Now showing items 341-360 of 1651

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