scholarly journals Advanced Micro- and Nano-Gas Sensor Technology: A Review

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1285 ◽  
Author(s):  
Haleh Nazemi ◽  
Aashish Joseph ◽  
Jaewoo Park ◽  
Arezoo Emadi
Keyword(s):  
Gas Sensor ◽  
Gas Sensors ◽  
High Performance ◽  
Sensor Arrays ◽  
Sensor Technology ◽  
Sensor Design ◽  
Fabrication Technology ◽  
Nano Fabrication ◽  
Wide Range ◽  
Gas Sensor Arrays

Micro- and nano-sensors lie at the heart of critical innovation in fields ranging from medical to environmental sciences. In recent years, there has been a significant improvement in sensor design along with the advances in micro- and nano-fabrication technology and the use of newly designed materials, leading to the development of high-performance gas sensors. Advanced micro- and nano-fabrication technology enables miniaturization of these sensors into micro-sized gas sensor arrays while maintaining the sensing performance. These capabilities facilitate the development of miniaturized integrated gas sensor arrays that enhance both sensor sensitivity and selectivity towards various analytes. In the past, several micro- and nano-gas sensors have been proposed and investigated where each type of sensor exhibits various advantages and limitations in sensing resolution, operating power, response, and recovery time. This paper presents an overview of the recent progress made in a wide range of gas-sensing technology. The sensing functionalizing materials, the advanced micro-machining fabrication methods, as well as their constraints on the sensor design, are discussed. The sensors’ working mechanisms and their structures and configurations are reviewed. Finally, the future development outlook and the potential applications made feasible by each category of the sensors are discussed.

Enhanced selectivity of target gas molecules through a minimal array of gas sensors based on nanoparticle-decorated SWCNTs

The Analyst ◽  
2019 ◽  
Vol 144 (13) ◽  
pp. 4100-4110 ◽  
Author(s):  
Sonia Freddi ◽  
Giovanni Drera ◽  
Stefania Pagliara ◽  
Andrea Goldoni ◽  
Luigi Sangaletti
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Metal Oxide Nanoparticles ◽  
Sensor Arrays ◽  
Oxide Nanoparticles ◽  
Gas Molecules ◽  
Enhanced Selectivity ◽  
Gas Sensor Arrays

Layers of CNTs decorated with metal and metal–oxide nanoparticles can be used to develop highly selective gas sensor arrays.

A single-chip integrated interfacing circuit for wide-range resistive gas sensor arrays

2009 ◽  
Vol 143 (1) ◽  
pp. 218-225 ◽  
Author(s):  
Giuseppe Ferri ◽  
Claudia Di Carlo ◽  
Vincenzo Stornelli ◽  
Andrea De Marcellis ◽  
Alessandra Flammini ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Sensor Arrays ◽  
Single Chip ◽  
Wide Range ◽  
Gas Sensor Arrays

scholarly journals Hazardous Gas Detection using Gas Sensors Arrays and Fuzzy-Based Classification

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1883-1888
Keyword(s):  
Gas Sensor ◽  
Electronic Nose ◽  
Gas Sensors ◽  
Sensor Arrays ◽  
Gas Detection ◽  
Hazardous Gases ◽  
The Impact ◽  
Co Gas ◽  
Hazardous Gas ◽  
Gas Sensor Arrays

This paper presents hazardous gas detection using gas sensors arrays and fuzzy-based classification. This research is an automation of hazardous gas detection using electronic nose. Gases surround us could either hazard or benefit our health. Gas detection is an important issue, as humans should not breathe in hazardous gases in order to maintain their health. Hence, there must be an indicator to show the hazardous level of certain gases so that people can avoid and minimize the impact on their health. In this paper, hazardous gas detection is implemented by using gas sensor arrays and fuzzy-based classification. A classification for the electronic nose (e-nose) is developed in order to classify gases and determine the level of hazard of gases. The results found that e-nose system is able to differentiate hazardous level of chosen gases which are LP gas and CO gas.

High performance gas sensors with dual response based on organic ambipolar transistors

2021 ◽  
Author(s):  
Xu Zhou ◽  
Zi Wang ◽  
Ruxin Song ◽  
Yadan Zhang ◽  
Lunan Zhu ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Gas Sensors ◽  
High Performance ◽  
Dual Response

A high performance organic ambipolar transistor-based gas sensor was constructed. It demonstrates dual response features and good selectivity.

scholarly journals Two-photon polymerization nanolithography technology for fabrication of stimulus-responsive micro/nano-structures for biomedical applications

2020 ◽  
Vol 9 (1) ◽  
pp. 1118-1136
Author(s):  
Zhenjia Huang ◽  
Gary Chi-Pong Tsui ◽  
Yu Deng ◽  
Chak-Yin Tang
Keyword(s):  
Biomedical Applications ◽  
Three Dimensional ◽  
Water Soluble ◽  
Fabrication Technology ◽  
Nano Fabrication ◽  
Two Photon ◽  
Nano Structures ◽  
Wide Range ◽  
Stimulus Responsive ◽  
Two Photon Polymerization

AbstractMicro/nano-fabrication technology via two-photon polymerization (TPP) nanolithography is a powerful and useful manufacturing tool that is capable of generating two dimensional (2D) to three dimensional (3D) arbitrary micro/nano-structures of various materials with a high spatial resolution. This technology has received tremendous interest in cell and tissue engineering and medical microdevices because of its remarkable fabrication capability for sophisticated structures from macro- to nano-scale, which are difficult to be achieved by traditional methods with limited microarchitecture controllability. To fabricate precisely designed 3D micro/nano-structures for biomedical applications via TPP nanolithography, the use of photoinitiators (PIs) and photoresists needs to be considered comprehensively and systematically. In this review, widely used commercially available PIs are first discussed, followed by elucidating synthesis strategies of water-soluble initiators for biomedical applications. In addition to the conventional photoresists, the distinctive properties of customized stimulus-responsive photoresists are discussed. Finally, current limitations and challenges in the material and fabrication aspects and an outlook for future prospects of TPP for biomedical applications based on different biocompatible photosensitive composites are discussed comprehensively. In all, this review provides a basic understanding of TPP technology and important roles of PIs and photoresists for fabricating high-precision stimulus-responsive micro/nano-structures for a wide range of biomedical applications.

Metal Oxide Gas Sensor Arrays: Geometrical Design and Selectivity

2009 ◽  
Author(s):  
Frank Röck ◽  
Nicolae Barsan ◽  
Udo Weimar ◽  
Matteo Pardo ◽  
Giorgio Sberveglieri
Keyword(s):  
Metal Oxide ◽  
Gas Sensor ◽  
Sensor Arrays ◽  
Geometrical Design ◽  
Metal Oxide Gas Sensor ◽  
Gas Sensor Arrays
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