Article
Chemistry, Multidisciplinary
Manasi Doshi, Jie Zhang, Eric P. Fahrenthold
Summary: The development of graphene-hBN heterostructures in electronic and gas sensing devices has sparked research interest. Eddy current measurements show lower sheet conductance in graphene-hBN heterostructures compared to previously reported results obtained through contact-based methods. Chemiresistive measurements reveal different incremental sheet conductance responses and sign variations in graphene and graphene-hBN sensors during oxygen adsorption, highlighting the importance of hysteresis in sensing processes.
Article
Engineering, Electrical & Electronic
Guanlin Tang, Sachin Navale, Pianpian Yang, Vikas Patil, Florian Stadler
Summary: This paper presents a method for modeling time-dependent responses using slightly modified Gompertz functions, with derived parameters correlating with the detection mechanism to expand analysis methods for a better understanding of gas sensing.
IEEE SENSORS JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Wenyuan Wei, Yangpeiqi Yi, Jun Song, Xiaogang Chen, Jinhua Li, Jiashen Li
Summary: Tunable temperature alarm sensors prepared using multilayer graphene and nitrocellulose can reliably monitor early high temperature risks. The sensors have a quick response time and superior flame retardancy property, and the response temperature and time can be adjusted by tuning the graphene/NC ratios to reduce fire risk in different scenarios.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Computer Science, Information Systems
S. Fouziya Sulthana, Cross T. Asha Wise, C. V. Ravikumar, Rajesh Anbazhagan, G. Idayachandran, Giovanni Pau
Summary: Scientific society expects significant advancements in fire detection methods due to the development in machine learning, information technology, sensors, and signal processing technology. Intelligent processing technologies reduce detection time and false alarms. Video-based fire detection technology has become more feasible with improved computing power and reduced costs of image sensors. Internet of Things (IoT) or Wireless Sensor Networks (WSN) have enhanced the differentiation between fire and non-fire threats. Unmanned Aerial Vehicles (UAVs) are becoming a realistic solution for fire monitoring and detection due to their remote sensing capabilities.
Article
Materials Science, Multidisciplinary
Jiabao Ding, Zichen Zheng, Zihao Song, Shumei Ding, Jie Wen, Kewei Liu, Chao Zhang, Hongpeng Li
Summary: This review systematically discusses the recent advances in novel sensing materials based on 1D nanostructures for chemiresistive gas sensors. It covers various types of 1D nanostructures and different types of sensing materials. The review also explores the relationship between structure, morphology, and performance, as well as enhanced sensing mechanisms. It provides a brief outlook on future development perspectives.
MATERIALS & DESIGN
(2023)
Review
Chemistry, Physical
Sanjit Manohar Majhi, Ali Mirzaei, Hyoun Woo Kim, Sang Sub Kim, Tae Whan Kim
Summary: This paper presents a discussion on types of gas sensors and energy-saving strategies, focusing on self-heated gas sensors, MEMS-based gas sensors, and room temperature operated flexible/wearable sensors, as well as their applications in environmental monitoring.
Article
Engineering, Electrical & Electronic
Ravindra Jha, Aman Nanda, Navakanta Bhat
Summary: By loading MoSe2 nanosheets on RGO sheets, the sensitivity and response time of the ammonia gas sensor were significantly improved in this study. The nanocomposite sensor showed a detection limit of 300 ppb, with a responsivity 2.6 times higher than that of the pure RGO sensor, and ultra-low power consumption.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Victoria Ivanova, Ahmet Senocak, Darya Klyamer, Erhan Demirbas, Saad Makhseed, Pavel Krasnov, Tamara Basova, Mahmut Durmus
Summary: Porous 3D hybrid materials (SWCNT/CoPc and SWCNT/ZnPc) were prepared and characterized for detecting gaseous H2S at low concentrations. The sensor response of SWCNT/CoPc was about 4 times higher than SWCNT/ZnPc, which correlated with the larger number of CoPc molecules on the SWCNT surface. The calculated LOD of H2S was 18 ppb for SWCNT/CoPc and 65 ppb for SWCNT/ZnPc.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Engineering, Electrical & Electronic
Kuo Zhan, Zhaolong Wang, Yabin Zhu, Jun Yan, Yunlin Chen
Summary: This paper proposes a nano-porous UIO-66-NH(2)/TiO(2) Bragg reflector sensor for highly sensitive, selective, and repetitive real-time detection of low concentration HCl gas. The sensor demonstrates a high sensitivity and fast optical response and recovery time, along with excellent selectivity among different gases. The UIO-66-NH(2)/TiO(2) sensor shows exceptional reversibility and reliability, indicating its potential for detecting low concentration HCl gas.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Ruijie Zhang, Yanjie Wang, Jing Li, Hongchao Zhao, Yuhang Wang, Yong Zhou
Summary: In this study, a composite sensor for room temperature ammonia detection was developed by incorporating cellulose nanofibers into PEDOT:PSS. The sensor exhibited high sensitivity, selectivity, and stability, with fast response and minimal baseline drift. Additionally, the sensor showed more than twofold response enhancement in the presence of humidity, and demonstrated flexible and bending-tolerant characteristics.
Article
Chemistry, Multidisciplinary
Farman Ullah, Khaled Ibrahim, Kissan Mistry, Abdus Samad, Ahmed Shahin, Joseph Sanderson, Kevin Musselman
Summary: We investigated the interaction between various analytes and a laser-exfoliated WS2 sensing material in a chemiresistive sensor. The response of the sensor was greatly enhanced by modifying the WS2 surface with WS2-ZnO heterojunctions. Water and ethanol produced a much higher response compared to acetone and toluene, and the charge asymmetry points in the analyte molecules played a key role in determining the sensor response. Our study provides valuable insights for advancing semiconductor gas sensors based on two-dimensional materials.
Article
Engineering, Electrical & Electronic
Snehanjan Acharyya, Sudip Nag, Prasanta Kumar Guha
Summary: This paper integrates a single metal-oxide based chemiresistive sensor device with machine learning tools for selective discrimination of different VOCs for indoor air quality monitoring. The fabricated sensor device using tungsten oxide nanoplates shows adequate sensor response for each target VOC, and machine learning algorithms are used to accurately discriminate and predict the concentrations of tested VOCs.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Ana Solorzano, Jens Eichmann, Luis Fernandez, Bernd Ziems, Juan Manuel Jimenez-Soto, Santiago Marco, Jordi Fonollosa
Summary: Gas sensor arrays provide a valuable alternative for early fire detection, but they have certain drawbacks, especially in terms of immunity to nuisances and calibration model obsolescence.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Review
Chemistry, Multidisciplinary
Young-Moo Jo, Yong Kun Jo, Jong-Heun Lee, Ho Won Jang, In-Sung Hwang, Do Joon Yoo
Summary: In order to improve the performance of gas sensors and enhance the quality of life, the use of metal-organic frameworks (MOFs) as sensing materials has been explored. MOFs are known for their high surface area, porosity, and unique surface chemistry, making them promising for gas-sensor innovations. Various types of MOFs have been developed by studying their compositional and morphological dependences, and incorporating catalysts and light activation. Additionally, MOFs have multiple applications as molecular sieves, absorptive filtering layers, and heterogeneous catalysts due to their separation properties and catalytic activity.
ADVANCED MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Rajesh Ghosh, Mohammed Aslam, Hemen Kalita
Summary: This review summarizes the recent advancements in graphene-based gas sensors with different dimensional structures, focusing on their applications in sensing and detecting crucial toxic gases and vapors. It discusses various graphene derivatives and their sensing applications, as well as emphasizes the potential of 3D graphene nanostructure in gas sensors.
MATERIALS TODAY COMMUNICATIONS
(2022)
