MEMS and Nanotechnology for Gas Sensors

MEMS and Nanotechnology for Gas Sensors by Sunipa Roy, Chandan Kumar Sarkar
2015 | ISBN: 1498700128 | English | 242 pages | PDF | 6 MB
How Can We Lower the Power Consumption of Gas Sensors?

There is a growing demand for low-power, high-density gas sensor arrays that can overcome problems relative to high power consumption. Low power consumption is a prerequisite for any type of sensor system to operate at optimum efficiency. Focused on fabrication-friendly microelectromechanical systems (MEMS) and other areas of sensor technology, explores the distinct advantages of using MEMS in low power consumption, and provides extensive coverage of the MEMS/nanotechnology platform for gas sensor applications.

This book outlines the microfabrication technology needed to fabricate a gas sensor on a MEMS platform. It discusses semiconductors, graphene, nanocrystalline ZnO-based microfabricated sensors, and nanostructures for volatile organic compounds. It also includes performance parameters for the state of the art of sensors, and the applications of MEMS and nanotechnology in different areas relevant to the sensor domain.

In addition, the book includes:

An introduction to MEMS for MEMS materials, and a historical background of MEMS
A concept for cleanroom technology
The substrate materials used for MEMS
Two types of deposition techniques, including chemical vapour deposition (CVD)
The properties and types of photoresists, and the photolithographic processes
Different micromachining techniques for the gas sensor platform, and bulk and surface micromachining
The design issues of a microheater for MEMS-based sensors
The synthesis technique of a nanocrystalline metal oxide layer
A detailed review about graphene; its different deposition techniques; and its important electronic, electrical, and mechanical properties with its application as a gas sensor
Low-cost, low-temperature synthesis techniques
An explanation of volatile organic compound (VOC) detection and how relative humidity affects the sensing parameters

provides a broad overview of current, emerging, and possible future MEMS applications. MEMS technology can be applied in the automotive, consumer, industrial, and biotechnology domains.
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