Article
Chemistry, Multidisciplinary
Matteo Tonezzer, Cristina Armellini, Laura Toniutti
Summary: Thermal electronic noses are an important type of sensor in modern applications, capable of distinguishing different gases and volatiles. Research shows that thermal electronic noses based on SnO2 nanowires outperform in detection and classification.
Article
Chemistry, Analytical
Tianqi Lu, Ammar Al-Hamry, Jose Mauricio Rosolen, Zheng Hu, Junfeng Hao, Yuchao Wang, Anurag Adiraju, Tengfei Yu, Elaine Yoshiko Matsubara, Olfa Kanoun
Summary: The research investigated the use of functionalized graphene materials to create highly sensitive sensors for volatile organic compounds (VOCs). The electronic nose composed of two different types of graphene films demonstrated variable sensitivity to specific VOCs, with high selectivity and identification accuracy. The sensors showed significant cross-selectivity to different VOCs, allowing for selective detection of multiple VOCs.
Review
Chemistry, Analytical
Alishba T. John, Krishnan Murugappan, David R. Nisbet, Antonio Tricoli
Summary: Electonic noses, relying on an array of chemical gas sensors, are used for identifying various compounds, particularly in the food industry and environmental monitoring. Advances in nanofabrication, sensor design, neural networks, and system integration have improved their efficacy. Commercial and custom Enoses face challenges in wider adoption and use across different applications.
Article
Nanoscience & Nanotechnology
Marija Prosheva, Maryam Ehsani, Bertha T. Perez-Martinez, Jadranka Blazevska Gilev, Yvonne Joseph, Radmila Tomovska
Summary: A novel dry method based on air sonication process was used to prepare graphene and multi-walled carbon nanotubes hybrids, avoiding the use of solvents and multistep purification process. By changing the ratio between MWCNTs and G, a range of hybrids with different surface morphologies and chemistries were obtained, showing great potential for designing mass-based sensors for toxic gases and chemiresistors for vapor detection.
Article
Nanoscience & Nanotechnology
Prashant Gupta, Hamed Gholami Derami, Darshit Mehta, Huzeyfe Yilmaz, Shantanu Chakrabartty, Baranidharan Raman, Srikanth Singamaneni
Summary: This paper presents a fabrication strategy for chemiresistors based on gold nanoislands, which allows for the production of highly reliable and reproducible sensing elements for a wide variety of gas sensing applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Hendrik Schlicke, Sophia C. Bittinger, Heshmat Noei, Tobias Vossmeyer
Summary: The study shows that the response kinetics of sensors to VOCs can be tuned by adjusting the sensor's structure and exposure. Response times are influenced by the molecular volume of the analyte, while maximum sensor response is affected by the analytes' polarity and vapor pressure. Linear discriminant analysis can differentiate between similar analytes based on response features.
ACS APPLIED NANO MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Sonia Freddi, Luigi Sangaletti
Summary: Breath analysis has great potential in medical care and diagnosis, and the development of electronic noses based on carbon nanotubes has attracted research community's interest. This review summarizes the available literature on CNTs-based electronic noses for breath analysis applications, including the functionalization procedure for sensor preparation, breath sampling techniques, statistical analysis methods, diseases under investigation, and the population studied. The review is divided into two main sections, one focusing on e-noses completely based on CNTs, and the other reporting on e-noses with sensors based on CNTs and other materials.
Review
Chemistry, Analytical
Zygfryd Witkiewicz, Krzysztof Jasek, Michal Grabka
Summary: On-site detection of chemical warfare agents (CWAs) can be achieved using various analytical techniques. However, these techniques are often complex and expensive. As an alternative, analyzers based on simple semiconductor sensors are being explored. These sensors use semiconductor materials such as metal oxides, organic semiconductors, carbon nanostructures, and silicon to detect CWAs. This review summarizes the current state of knowledge and achievements in the field and discusses the prospects for the practical application of semiconductor sensors in CWA detection.
Article
Engineering, Electrical & Electronic
Jia Yan, Ruihong Sun, Tao Liu, Shukai Duan
Summary: This research introduces a novel framework, DAEL, that improves the gas recognition performance of a drifted chemical sensor array. The proposed framework utilizes source domain samples and guidance samples from the target domain to develop a robust ensemble classifier. Through experimental validation, the DAEL approach demonstrates a more effective drift compensation mechanism than existing comparative methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Optics
Renato Luiz Faraco Filho, Felipe Oliveira Barino, Joao Calderano, Italo Fernando Valle Alvarenga, Deivid Campos, Alexandre Bessa Dos Santos
Summary: This paper presents the application of an in-fiber Mach-Zehnder interferometer (MZI) for monitoring coffee bean fermentation. Two MZIs, based on a combination of a fiber taper cascaded by a micro-tapered long-period fiber grating, were installed in a fermentation barrel to monitor the liquids and gases released during the fermentation process. The research demonstrates that in-fiber MZIs are promising optical noses for this scenario.
Article
Chemistry, Multidisciplinary
Ivan Ivanov, Valeriy Skryshevsky, Ali Belarouci
Summary: In this article, the authors investigate ways to improve the efficiency of porous silicon (PS)-based optical microcavity sensors for electronic tongue/nose systems. They use the transfer matrix method to compute reflectance spectra of structures with different refractive indexes, cavity positions, and number of bilayers. The sensitivity of the microcavity sensor is found to be higher for structures with lower refractive indexes and adjusted cavity positions. The experimental results are in good agreement with the simulated data, indicating the potential application of PS host matrix in electronic sensing devices.
Article
Engineering, Electrical & Electronic
Zhiyuan Wu, Fengchun Tian, James A. Covington, Hantao Li, Siyuan Deng
Summary: Sensor drift is a common issue in electronic noses, leading to decreased long-term performance. Transferring models to different scenarios remains challenging even with drift compensation. To remedy this, a general-purpose calibration approach using different/generic chemicals is needed. This article investigates a method to identify suitable chemicals based on universality, safety, sensibility, and differentiation, and tests it on a homemade electronic nose. Six different chemicals (acetone, alcohol, ethyl acetate, tetrahydrofuran, acetaldehyde, and n-hexane) were selected as the most appropriate for calibration. This research aims to inspire the development of a reasonable chemical selection method for general-purpose electronic noses.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Chemistry, Multidisciplinary
Garam Bae, Minji Kim, Wooseok Song, Sung Myung, Sun Sook Lee, Ki-Seok An
Summary: This study systematically investigates the impact of selectivity for a target gas on the prediction accuracy of gas concentration using machine learning. The results show a proportional relationship between selectivity factor and prediction accuracy, suggesting that combining sensors with different selectivity factors can enhance the prediction accuracy.
Review
Chemistry, Multidisciplinary
Sanggon Kim, Jacob Brady, Faraj Al-Badani, Sooyoun Yu, Joseph Hart, Sungyong Jung, Thien-Toan Tran, Nosang V. Myung
Summary: This article provides an overview of the application of nanoengineered materials in gas sensing, discussing various strategies for improving gas sensing performance using nanomaterials and highlighting the development directions of optical and electrical sensing modalities.
FRONTIERS IN CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Wentian Zhang, Taoping Liu, Amber Brown, Maiken Ueland, Shari L. Forbes, Steven Weidong Su
Summary: The whisky market is prone to fraudulent activities, and it is challenging for most consumers to distinguish fraudulent beverages. A new electronic nose prototype called NOS.E has been developed to identify the differences between whiskies based on their odour. This study demonstrates the high accuracy of the proposed e-nose solution in brand name, region, and style classification, which was further validated using GC x GC-TOFMS.
IEEE SENSORS JOURNAL
(2022)
Article
Computer Science, Artificial Intelligence
Haiwen Yuan, Changshi Xiao, Wenqiang Zhan, Yanfeng Wang, Chen Shi, Huixian Ye, Kai Jiang, Zhenyi Ye, Chunhui Zhou, Yuanqiao Wen, Qiliang Li
JOURNAL OF INTELLIGENT & ROBOTIC SYSTEMS
(2019)
Article
Engineering, Electrical & Electronic
Chen Shi, Yu Dong, Qiliang Li
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2019)
Article
Physics, Applied
Sheng Yu, Bagher Tabibi, Qiliang Li, Felix Jaetae Seo
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Chemistry, Analytical
Wenqiang Zhan, Changshi Xiao, Yuanqiao Wen, Chunhui Zhou, Haiwen Yuan, Supu Xiu, Yimeng Zhang, Xiong Zou, Xin Liu, Qiliang Li
Editorial Material
Computer Science, Information Systems
Hao Zhu, Qiliang Li
Article
Materials Science, Ceramics
Xianlu Gao, Ye Li, Jianwei Chen, Chen Yuan, Min Zeng, Aihua Zhang, Xingsen Gao, Xubing Lu, Qiliang Li, Jun-Ming Liu
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2019)
Article
Physics, Applied
Chen Shi, Asha Rani, Brian Thomson, Ratan Debnath, Abhishek Motayed, Dimitris E. Ioannou, Qiliang Li
APPLIED PHYSICS LETTERS
(2019)
Article
Physics, Applied
Hao Zhu, Curt A. Richter, Sheng Yu, Huixian Ye, Min Zeng, Qiliang Li
APPLIED PHYSICS LETTERS
(2019)
Article
Chemistry, Physical
Lauryn Wu, Kunming Gu, Qiliang Li
APPLIED SURFACE SCIENCE
(2019)
Article
Physics, Condensed Matter
Lin Yang, Changan Wang, Min Zeng, Zhipeng Hou, Zhen Fan, Deyang Chen, Minghui Qin, Xubing Lu, Qiliang Li, Xingsen Gao
SOLID STATE COMMUNICATIONS
(2020)
Article
Computer Science, Information Systems
Wenqiang Zhan, Changshi Xiao, Yuanqiao Wen, Chunhui Zhou, Haiwen Yuan, Supu Xiu, Xiong Zou, Cheng Xie, Qiliang Li
Article
Chemistry, Physical
Yi Chen, Ye Li, Dongfeng Zheng, Leiyu Li, Min Zeng, Minghui Qin, Zhipeng Hou, Zhen Fan, Xingsen Gao, Xubing Lu, Qiliang Li, Jun-Ming Liu
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Review
Chemistry, Analytical
Zhenyi Ye, Yuan Liu, Qiliang Li
Summary: Machine learning methods enable precise odor identification and analysis with the electronic nose (E-Nose) for both qualitative and quantitative purposes. Advanced machine learning techniques are crucial for improving the performance of the E-Nose and enhancing its capabilities in various applications, leading to increased prediction accuracy and stability.
Article
Crystallography
Sheng Yu, Tikaram Neupane, Bagher Tabibi, Qiliang Li, Felix Jaetae Seo
Summary: Defect-mediated hBN supercells exhibit visible optical spectra and specific electronic characteristics. Different types of defects, such as atomic vacancy, antisite, and substitution of foreign atom, show distinct spin-resolved optical and electronic properties. Positively charged defects dominate the optical and electronic characteristics in the longer spectral region.
Article
Chemistry, Analytical
Jafetra Rambeloson, Dimitris E. Ioannou, Parameswari Raju, Xiao Wang, Abhishek Motayed, Hyeong Jin Yun, Qiliang Li
Summary: Photoactivated gallium nitride (GaN) nanowire-based gas sensors were fabricated with either bare In2O3 or Au-coated In2O3 for high-sensitivity NO2 detection and low-power operation. Au/In2O3 sensors outperformed In2O3 sensors under both 265 nm and 365 nm illumination, with significantly reduced power consumption during photoactivation.