...) gas sensors, focusing on their potential for sensitive, real-time environmental monitoring and mitigation of health risks. Design/methodology/approach The method includes a litreature-based comparative analysis of recent studies on rGO–ZnO NO ₂ gas sensors, covering synthesis...

...Anyan Jiang; Ruixue Wang; Shunren Hu; Lujia Yang; Ziqi Pi Purpose Sensitivity is one of the core indicators of gas sensors. This paper aims to provide a method for obtaining SnO₂ gas sensors with the optimal sensitivity and desired fractal dimension by adjusting the annealing parameters...

...Zhaopeng Li; Pei Li; Peisi Yin; Xin Zhao; Yangting Hu; Fei Sun; Xia Sun; Zhenhe Wang Purpose This paper aims to develop a highly sensitive resistive gas sensor for accurately detecting ethyl formate to achieve reliable and real-time monitoring of fish meal spoilage. Design/methodology/approach...

...Vishakha Pareek; Santanu Chaudhury; Sanjay Singh Purpose The electronic nose is an array of chemical or gas sensors and associated with a pattern-recognition framework competent in identifying and classifying odorant or non-odorant and simple or complex gases. Despite more than 30 years...

... of extraction technique is the extraction of characteristics based on a particular model (Haddad et al., 2007 ; Chambon et al., 1999). However, other researchers concentrated on extracting piecemeal signal features, such as maximum sensitivity (Xiong et al., 2014). Gas sensors...

...Srinivas Rao Sriram; Saidireddy Parne; Venkata Satya Chidambara Swamy Vaddadi; Damodar Edla; Nagaraju P.; Raji Reddy Avala; Vijayakumar Yelsani; Uday Bhasker Sontu Purpose This paper aims to focus on the basic principle of WO₃ gas sensors to achieve high gas-sensing performance...

... of a piezoceramic sample. Figure 2 © Emerald Publishing Limited 2018 Emerald Publishing Limited Licensed re-use rights only Fabrication Gas sensors Finite element method (FEM) Transit time difference Ultrasonic flowmeter Ultrasonic transducer APL = Acoustic path length...

... rights only Sensors Chaos Gas sensors Noise Limit of detection Hydrogen has many important applications, but raises serious safety issues, being explosive and extremely flammable in air (Boon-Brett et al., 2010 ; Hubert et al., 2010). It is therefore important...

.../value A radical mechanism for gas sensor reaction in two pathways was considered and activation energies were calculated by density functional theory (DFT) method to describe different sensitivities of tested volatile gases. The experimental results were consistent with the calculations. Susan...

...Mohammadali Eslamian; Alireza Salehi; Zohreh Sadat Miripour Purpose Indium tin oxide (ITO) thin film as a gas sensor has a good stability and performance. The purpose of this paper is to compare the effect of depositing different metal layers in various structures on the gas sensing properties...

...Wei Wei; Jun Chang; Qingjie Huang; Qiang Wang; Yuanyuan Liu; Zengguang Qin Purpose As measurement results of optical gas sensors are constantly affected by the pressure of a target gas, approaches must be taken to modify the results. The purpose of this paper is to compare the traditional...

...Md.Masud Rana; Dauda Sh. Ibrahim; M.R. Mohd Asyraf; S. Jarin; Amanullah Tomal Purpose This review paper aims to focus on recent advances of carbon nanotubes (CNTs) to produce gas sensors. Gas sensors are widely used for monitoring hazardous gas leakages and emissions in the industry, households...

... of research leading to a common theme that will inform a non-expert of recent developments in the field. Biosensors Gas sensors Electronic nose Bionic nose Olfactory sensors Krishna Chandra Persaud can be contacted at: krishna.persaud@manchester.ac.uk 31 10 2016 13 01 2017...

... the sensitivity of gas detection. The WMS theory has been detailed previously (Kluczynski et al., 1999 ; Li et al., 2006 ; Sun et al., 2013) and is therefore only reviewed briefly here. Lasers Spectral analysis Gas sensors Infrared (1) v ( t ) = v...

... Limited 2016 Emerald Group Publishing Limited Licensed re-use rights only Gas sensors Machine learning Neural networks Prediction Electronic nose Indoor air quality (5) φ ( r ) = exp   ( − r 2 2 σ 2 ) where w_jk...

...-frequency identification (RFID) technologies and gas sensors as the two promoting feasibilities for the tracing of packaged food. Monitoring and maintaining quality and safety of food in transport and storage from producer to consumer are the most important concerns in food industry. Many toxin gases, even...

...Lei Zhang; Xiongwei Peng Purpose – The purpose of this paper is to present a novel and simple prediction model of long-term metal oxide semiconductor (MOS) gas sensor baseline, and it brings some new perspectives for sensor drift. MOS gas sensors, which play a very important role in electronic...

...Janusz Marek Smulko; Maciej Trawka; Claes Goran Granqvist; Radu Ionescu; Fatima Annanouch; Eduard Llobet; Laszlo Bela Kish Purpose – This paper aims to present the methods of improving selectivity and sensitivity of resistance gas sensors. Design/methodology/approach – This paper compares...

... of formaldehyde. In addition, the sensitivity of the semiconductor oxide gas sensor follows the following empirical formula (Choopun et al., 2007 ; Williams, 1999 ; Li et al., 2007): Equation 1 where, a is a constant for a given operating temperature, target gas and sensor material...

... recently consumer electronics and these applications will continue to expand. MEMS is making progressive inroads in the gas sensing field and although no major class of gas sensor is yet wholly MEMS-based, emerging, high volume applications are expected to stimulate the wider use of the technology...