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Author: search.filters.author.Gupta, NavneetSubject: search.filters.subject.Sensors

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    Flexible and Wearable Sensors for Health Monitoring Applications
    (CRC Press, 2023) Gupta, Navneet
    Over the past decade, flexible electronics have attracted much interest as conventional semiconductors are not competent to provide new product paradigms. The flexible devices are bendable, stretched, and can be folded without losing functionality. Flexible electronics devices are used in various fields, such as consumer electronics, medical, health care, and security devices, because they are generally lightweight, non-breakable, and involve a relatively simple manufacturing process. The use of wearable electronics for non-invasive real-time health monitoring has also gained popularity. The continuous monitoring of body locomotion, biophysical parameters, and biomarkers is valuable in quantifying human performance and off-site patient care. Flexible electronics provide a natural interaction between the human body and wearable devices because of their high flexibility and conformity. So, in this chapter, we shall discuss the flexible substrate, active material, transduction mechanism, and fabrication processes of different flexible sensors with a special focus on temperature, pressure, and strain sensors.
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    Ab Initio Study of Carbon Nanotube Field Effect Transistor Gas Sensor for Detection of Ammonia and Nitrogen Dioxide Gas
    (IEEE, 2022-07) Gupta, Navneet; Chaturvedi, Nitin
    Lebel-free sensors are capable for sensing low concentration of gas molecules. In this article, the importance of Carbon Nanotube Field Effect Transistor (CNFET) is described for gas sensing application. The first principal study to investigate the CNFET to detection of low concentration of ammonia (NH 3 ) and nitrogen dioxide (NO 2 ) gas molecules. By discussing the electronic and transport properties of CNFET, we find that CNFET can be used for gas sensing applications. Detailed analysis of binding energy, e-k diagram, density of state (DOS), device density of state (DDOS), transmission pathways and current-voltage (I-V) characteristics configuration have been performed using density functional theory (DFT) and non-equilibrium green function (NEGF) method. It has been observed that CNFET can be used for the potential application of gas sensor at room temperature. Out theoretical findings are corroborated with experimental data and this virtual device structure can be converted into physical device to get nano dimensions integrated gas senso
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    MEMS Switches for RF Applications - A Review
    (Sensors & Transducers, 2013) Gupta, Navneet
    Sensors and Biosensors, MEMS Technologies and its Applications (Book Series: Advances in Sensors: Reviews, Vol. 2) - 18 chapters with sensor related state-of-the-art reviews and descriptions of the latest achievements written by experts from academia and industry from 12 countries: China, India, Iran, Malaysia, Poland, Singapore, Spain, Taiwan, Thailand, UK, Ukraine and USA. This volume is divided into three main parts: physical sensors, biosensors, nanoparticles, MEMS technologies and applications. With this unique combination of information in each volume, the Advances in Sensors: Reviews Book Series will be of value for scientists and engineers in industry and at universities, to sensors developers, distributors, and users. Like the 1st volume of this Book Series, the 2nd volume also has been organized by topics of high interest.