Dr. Ashok Srivastava Profile

Dr. Ashok Srivastava

Deceased at Louisiana State Univ

SPIE Involvement:

Author

Publications (35)

Proceedings Article | 22 March 2021 Presentation + Paper

Gamma irradiation effect studies on monolayer molybdenum disulfide on metallic substrates

Chintan Chavda, Georgios Veronis, Ashok Srivastava, Erin Vaughan

Proceedings Volume 11590, 115900I (2021) https://doi.org/10.1117/12.2583155

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Proceedings Article | 22 April 2020 Presentation + Paper

Gamma irradiation effect studies on monolayer CVD grown graphene on metallic substrates

Chintan Chavda, Ashok Srivastava, Sangram Pradhan, Messaoud Bahoura

Proceedings Volume 11378, 113780E (2020) https://doi.org/10.1117/12.2556096

KEYWORDS: Graphene, Raman spectroscopy, Nickel, Chemical vapor deposition, Copper, Carbon, X-rays

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Proceedings Article | 5 May 2017 Presentation + Paper

Irradiation effect on back-gate graphene field-effect transistor

Xinlu Chen, Ashok Srivastava, Ashwani Sharma, Clay Mayberry

Proceedings Volume 10196, 1019603 (2017) https://doi.org/10.1117/12.2258096

KEYWORDS: Graphene, Transistors, Interfaces, Field effect transistors, Electronics, Gamma radiation, X-rays, Oxides, Electrons, Silicon, Raman spectroscopy, Scattering, Capacitance

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Proceedings Article | 17 April 2017 Presentation + Paper

Photo-electronic current transport in back-gated graphene transistor

Ashok Srivastava, Xinlu Chen, Aswini Pradhan

Proceedings Volume 10167, 101671H (2017) https://doi.org/10.1117/12.2258051

KEYWORDS: Photovoltaics, Solar energy, Resistance, Thermoelectric materials, Graphene, Transistors, Photodetectors, Interfaces, Field effect transistors, Optoelectronics, Photoelectric effect, Silicon, Laser sources

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Proceedings Article | 16 April 2016 Presentation + Paper

Graphene nanoribbon field effect transistor for nanometer-size on-chip temperature sensor

Yaser Banadaki, Ashok Srivastava, Safura Sharifi

Proceedings Volume 9802, 980203 (2016) https://doi.org/10.1117/12.2219346

KEYWORDS: Graphene, Temperature sensors, Field effect transistors, New and emerging technologies, Signal to noise ratio, Oxides, Silicon, Resistance, Integrated circuits

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Proceedings Article | 16 April 2016 Presentation + Paper

Metallic single-walled carbon nanotube for ionized radiation detection

Yaser Banadaki, Ashok Srivastava, Safura Sharifi

Proceedings Volume 9802, 98020A (2016) https://doi.org/10.1117/12.2219340

KEYWORDS: Sensors, Chemical species, Carbon nanotubes, Single walled carbon nanotubes, Carbon, Ionization, Resistance, Phonons, Scattering

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Proceedings Article | 16 April 2014 Paper

A graphene field effect transistor for high temperature sensing applications

Y. Banadaki, K. Mohsin, A. Srivastava

Proceedings Volume 9060, 90600F (2014) https://doi.org/10.1117/12.2044611

KEYWORDS: Graphene, Scattering, Phonons, Resistance, Silica, Temperature sensors, Silicon, Field effect transistors, Sensors, Semiconducting wafers

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Proceedings Article | 16 April 2014 Paper

Metallic single-walled, carbon nanotube temperature sensor with self heating

K. Mohsin, Y. Banadaki, A. Srivastava

Proceedings Volume 9060, 906003 (2014) https://doi.org/10.1117/12.2044603

KEYWORDS: Sensors, Temperature sensors, Resistance, Carbon nanotubes, Scattering, Metals, Single walled carbon nanotubes, Silica, Phonons, Temperature metrology

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Proceedings Article | 24 September 2013 Paper

Current transport model of graphene nanoribbon tunnel transistor in variable and constant field

M. Fahad, A. Srivastava, A. Sharma, C. Mayberry

Proceedings Volume 8814, 88140L (2013) https://doi.org/10.1117/12.2022909

KEYWORDS: Graphene, Transistors, Field effect transistors, Performance modeling, Oxides, Dielectrics, Diodes, Integrated circuit design, Integrated circuits, Carbon

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Proceedings Article | 31 March 2012 Paper

Electronic current transport in CNT-FETs for operation in ballistic region

Ashok Srivastava, Yao Xu, Ashwani Sharma, Clay Mayberry

Proceedings Volume 8344, 83440O (2012) https://doi.org/10.1117/12.914980

KEYWORDS: Carbon nanotubes, Biosensing, Semiconductors, Integrated circuits, Chemical analysis, Integrated circuit design, Sensors, Electronic design automation, Transistors, Metals

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SPIE Journal Paper | 1 May 2010 Open Access

Carbon nanotubes for next generation very large scale integration interconnects

Ashok Srivastava, Yao Xu, Ashwani Sharma

JNP, Vol. 4, Issue 01, 041690, (May 2010) https://doi.org/10.1117/12.10.1117/1.3446896

KEYWORDS: Copper, Carbon nanotubes, Resistance, Capacitance, Very large scale integration, Inductance, Electron transport, Graphene, Performance modeling, Integrated circuits

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Proceedings Article | 31 March 2010 Paper

Reliability considerations in switchable PLL frequency synthesizers for wireless sensor networks

Y. Liu, A. Srivastava

Proceedings Volume 7646, 76460V (2010) https://doi.org/10.1117/12.847664

KEYWORDS: Sensor networks, Reliability, Picosecond phenomena, Telecommunications, Sensors, Transceivers, CMOS technology, Clocks, Oscillators, Phase measurement

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Proceedings Article | 31 March 2010 Paper

A programmable second order oversampling CMOS sigma-delta analog-to-digital converter for low-power sensor interface electronics

R. Soundararajan, A. Srivastava, Y. Xu

Proceedings Volume 7646, 76460P (2010) https://doi.org/10.1117/12.847651

KEYWORDS: Sensors, Modulators, Clocks, Electronics, CMOS sensors, Sensor networks, Interfaces, Analog electronics, Digital filtering, Linear filtering

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Proceedings Article | 1 April 2009 Paper

Transient behavior of integrated carbon nanotube field effect transistor circuits and bio-sensing applications

Yao Xu, Ashok Srivastava

Proceedings Volume 7291, 72910I (2009) https://doi.org/10.1117/12.815392

KEYWORDS: Carbon nanotubes, Field effect transistors, Biosensing, Capacitance, Integrated circuits, Adsorption, Biological and chemical sensing, Fluid dynamics, Mathematical modeling, Picosecond phenomena

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Proceedings Article | 26 March 2008 Paper

Current transport modeling in carbon nanotube field effect transistors (CNT-FETs) and bio-sensing applications

Jose Marulanda, Ashok Srivastava, Ashwani Sharma

Proceedings Volume 6931, 693108 (2008) https://doi.org/10.1117/12.775181

KEYWORDS: Carbon nanotubes, Single walled carbon nanotubes, Sensors, Field effect transistors, Biosensing, Oxides, Gold, Semiconductors, Silicon, Diffusion

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Proceedings Article | 31 March 2006 Paper

CMOS chip chemical detection system comprising mass-sensitive nanocantilevers

Ashok Srivastava, Rajiv Soundararajan, Jui-Ching Hsu

Proceedings Volume 6172, 61720Y (2006) https://doi.org/10.1117/12.659063

KEYWORDS: Capacitors, Capacitance, Silicon, Interfaces, Aluminum, Chemical detection, Sensors, Carbon nanotubes, Gas sensors, Biological and chemical sensing

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Proceedings Article | 23 May 2005 Paper

A combined noise analysis and power supply current based testing of CMOS analog integrated circuits

Ashok Srivastava, Vani Pulendra, Siva Yellampalli

Proceedings Volume 5844, (2005) https://doi.org/10.1117/12.609258

KEYWORDS: Power supplies, Amplifiers, Picosecond phenomena, Monte Carlo methods, Analog electronics, Device simulation, Integrated circuits, Tolerancing, Field effect transistors, Decision support systems

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Proceedings Article | 23 May 2005 Paper

A simple noise modeling based testing of CMOS analog integrated circuits

Siva Yellampalli, Ashok Srivastava

Proceedings Volume 5844, (2005) https://doi.org/10.1117/12.609253

KEYWORDS: Amplifiers, Field effect transistors, Device simulation, Analog electronics, Integrated circuits, Transistors, Interference (communication), Manufacturing, Data modeling, Digital electronics

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Proceedings Article | 23 May 2005 Paper

Phase noise analysis for OFDM systems based on hot-carrier effects in synchronization electronics

Sameer Herlekar, Chi Zhang, Hsiao-Chun Wu, Ashok Srivastava

Proceedings Volume 5847, (2005) https://doi.org/10.1117/12.609822

KEYWORDS: Orthogonal frequency division multiplexing, Field effect transistors, Systems modeling, Receivers, Signal to noise ratio, Oscillators, Performance modeling, Telecommunications, Interference (communication), Electronics

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Proceedings Article | 23 May 2005 Paper

Hot carrier effects on jitter and phase noise in CMOS voltage-controlled oscillators

Chi Zhang, Ashok Srivastava

Proceedings Volume 5844, (2005) https://doi.org/10.1117/12.609196

KEYWORDS: Oscillators, Device simulation, Phase shifts, Transistors, Computer simulations, Field effect transistors, Instrument modeling, Molybdenum, Circuit switching, Switching

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Proceedings Article | 16 May 2005 Paper

Post-CMOS chip-level processing for high-aspect-ratio microprobe fabrication utilizing pulse plating

Tinghui Xin, Pratul Ajmera, Chuang Zhang, Ashok Srivastava

Proceedings Volume 5763, (2005) https://doi.org/10.1117/12.600128

KEYWORDS: Plating, Semiconducting wafers, Nickel, Etching, Photoresist materials, Electroplating, Silicon, Metals, Signal detection, Signal processing

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Proceedings Article | 16 May 2005 Paper

Remote power delivery for hybrid integrated bio-implantable electrical stimulation system

Venkat Gaddam, Jagadish Yernagula, Raghavendra Anantha, Satish Kona, Sunitha Kopparthi, A. Chamakura, Pratul Ajmera, Ashok Srivastava

Proceedings Volume 5763, (2005) https://doi.org/10.1117/12.600621

KEYWORDS: Receivers, Transmitters, Capacitors, Transistors, Electrodes, Resistance, Switches, Circuit switching, Inductance, Clocks

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Proceedings Article | 16 May 2005 Paper

Charge pump CMOS circuit based on internal clock voltage boosting for biomedical applications

Raghavendra Anantha, Ashok Srivastava, Pratul Ajmera

Proceedings Volume 5763, (2005) https://doi.org/10.1117/12.600546

KEYWORDS: Capacitors, Clocks, Transistors, Switches, Power supplies, Device simulation, Diodes, Biomedical optics, Microelectromechanical systems, Photomicroscopy

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Proceedings Article | 29 July 2004 Paper

High-aspect-ratio neural probes for monolithic integration with ultra-low-power CMOS operational amplifier circuit

Tinghui Xin, Pratul Ajmera, Chuang Zhang, Ashok Srivastava

Proceedings Volume 5389, (2004) https://doi.org/10.1117/12.539593

KEYWORDS: Nickel, Silicon, Amplifiers, Signal processing, Electroplating, Semiconducting wafers, Neurons, Electrodes, Metals, Copper

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Proceedings Article | 29 July 2004 Paper

0.8V ultralow-power CMOS analog multiplexer for remote biological and chemical signal processing

Chuang Zhang, Ashok Srivastava, Pratul Ajmera

Proceedings Volume 5389, (2004) https://doi.org/10.1117/12.539066

KEYWORDS: Analog electronics, Multiplexers, Field effect transistors, Transistors, Switches, Device simulation, Signal processing, Sensors, CMOS technology, Signal detection

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Proceedings Article | 29 July 2004 Paper

Digital CMOS interface circuit for current and capacitance sensing

Ashok Srivastava

Proceedings Volume 5389, (2004) https://doi.org/10.1117/12.540114

KEYWORDS: Digital electronics, Capacitance, Sensors, Capacitors, Analog electronics, Clocks, Binary data, Device simulation, CMOS sensors, Logic

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Proceedings Article | 22 July 2003 Paper

Design, simulation, and fabrication of a novel integrated microaccelerometer utilizing a post-CMOS fabrication technique

In-Hyouk Song, Sunitha Kopparthi, Pratul Ajmera, Ashok Srivastava

Proceedings Volume 5055, (2003) https://doi.org/10.1117/12.483580

KEYWORDS: Field effect transistors, Amplifiers, Fabrication, Transistors, Device simulation, Oxides, Sensors, Beam shaping, Molybdenum, Signal processing

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Proceedings Article | 22 July 2003 Paper

MEMS-based adaptive impedance matching network

Ashok Srivastava

Proceedings Volume 5055, (2003) https://doi.org/10.1117/12.483569

KEYWORDS: Amplifiers, Antennas, Microelectromechanical systems, Network architectures, Capacitors, Global system for mobile communications, Capacitance, Silicon, Signal attenuation, Inductance

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Proceedings Article | 22 July 2003 Paper

Ultralow-power operational amplifier CMOS chip for monolithic integration with neural microprobes

Chuang Zhang, Tinghui Xin, Ashok Srivastava, Pratul Ajmera

Proceedings Volume 5055, (2003) https://doi.org/10.1117/12.483573

KEYWORDS: Amplifiers, Silicon, Mirrors, Nickel, Photomicroscopy, Aluminum, Neurons, Electroplating, Field effect transistors, Electrodes

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Proceedings Article | 12 May 2003 Paper

Noise analysis of an 0.8-V ultralow-power CMOS operational amplifier

Chuang Zhang, Ashok Srivastava, Pratul Ajmera

Proceedings Volume 5113, (2003) https://doi.org/10.1117/12.488938

KEYWORDS: Amplifiers, Field effect transistors, Resistance, Mirrors, Signal to noise ratio, Power supplies, Device simulation, Transistors, Standards development, Solids

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Proceedings Article | 11 July 2002 Paper

Novel scheme for a higher bandwidth sensor readout

Ashok Srivastava, Harish Venkata, Pratul Ajmera

Proceedings Volume 4700, (2002) https://doi.org/10.1117/12.475050

KEYWORDS: Binary data, Logic, Sensors, Field effect transistors, Data conversion, Switching, Capacitors, Signal processing, Capacitance, Integrated circuit design

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Proceedings Article | 20 July 1999 Paper

Digital-readout CMOS design for capacitive sensors using on-chip variable sense capacitor arrays

Ashok Srivastava, Hanson Yong, Daniel Wildhaber, Mohammed Hasan, Vishnupriya Gongalreddy, Jing Wang, Pratul Ajmera, Farzad Pouralborz

Proceedings Volume 3673, (1999) https://doi.org/10.1117/12.354284

KEYWORDS: Capacitors, Sensors, Clocks, Remote sensing, Analog electronics, CMOS sensors, Amplifiers, Microelectromechanical systems, CMOS technology, Capacitance

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Proceedings Article | 20 July 1998 Paper

Readout electronics scheme in CMOS technology for integration with analog outputs from integrated smart sensors

Ashok Srivastava, S. Prasanna, Pratul Ajmera

Proceedings Volume 3328, (1998) https://doi.org/10.1117/12.320178

KEYWORDS: Analog electronics, Sensors, Amplifiers, Electronics, Digital electronics, CMOS sensors, CMOS technology, Signal detection, Signal processing, Microelectromechanical systems

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Proceedings Article | 13 September 1996 Paper

Design, fabrication, and testing of polysilicon microheaters in silicon

Naveen George, Ashok Srivastava

Proceedings Volume 2880, (1996) https://doi.org/10.1117/12.250954

KEYWORDS: Etching, Silicon, Resistance, CMOS technology, Standards development, Microelectromechanical systems, Metals, Glasses, Semiconductors, Xenon

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Proceedings Article | 15 September 1995 Paper

Micromachined hydrocarbon-based gas sensors

Ashok Srivastava, Naveen George, J. Cherukuri

Proceedings Volume 2642, (1995) https://doi.org/10.1117/12.221160

KEYWORDS: Hydrogen, Gas sensors, Etching, Palladium, Metals, Computer aided design, Molybdenum, Sensors, Chemical species, Silicon

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Showing 5 of 35 publications

Conference Committee Involvement (20)

Nano-, Bio-, Info-Tech Sensors, and Wearable Systems

7 March 2022 | Long Beach, California, United States

Nano-, Bio-, Info-Tech Sensors and Wearable Systems

22 March 2021 | Online Only, California, United States

Nano-, Bio-, Info-Tech Sensors and 3D Systems

27 April 2020 | Online Only, California, United States

Nano-, Bio-, Info-Tech Sensors and 3D Systems

4 March 2019 | Denver, Colorado, United States

Nano-, Bio-, Info-Tech Sensors and 3D Systems

5 March 2018 | Denver, Colorado, United States

Nano-, Bio-, Info-Tech Sensors and 3D Systems

26 March 2017 | Portland, Oregon, United States