Article
Biochemical Research Methods
Ying Wang, Meizheng You, Yanhong Zhang, Sumei Wu, Y. Zhang, Huicheng Yang, Ting Zheng, Xiaohui Chen, Zhihao Chen, Xianhe Xie, Xiaochun Zheng
Summary: A novel dual-path microbend fiber optic sensor is developed for noninvasive measurement of respiratory rate and heart rate in cancer patients. The sensor demonstrated good consistency with hospital equipment and showed a lower false report rate compared to a single path sensor.
BIOMEDICAL OPTICS EXPRESS
(2022)
Article
Critical Care Medicine
Filippo Bongiovanni, Domenico Luca Grieco, Gian Marco Anzellotti, Luca Salvatore Menga, Teresa Michi, Melania Cesarano, Valeria Raggi, Cecilia De Bartolomeo, Benedetta Mura, Giovanna Mercurio, Sonia D'Arrigo, Giuseppe Bello, Riccardo Maviglia, Mariano Alberto Pennisi, Massimo Antonelli
Summary: The study compared different humidification settings during helmet noninvasive ventilation (NIV) in patients with acute hypoxemic respiratory failure, finding that a double-tube circuit without humidification provided adequate gas conditioning, improved comfort, and patient-ventilator interaction. In contrast, using heated humidifiers (HHs) or heat and moisture exchangers (HME) resulted in increased discomfort due to excessive heat and humidity, leading to more intense dyspnea.
ANNALS OF INTENSIVE CARE
(2021)
Article
Thermodynamics
Pedram Shamsizadeh, Ebrahim Afshari
Summary: This study investigates the performance of a humidifier in a mechanical ventilation system, and finds that increasing body weight and respiratory rate decreases the humidifier performance, while increasing wet gas flow rate and humidity improves its performance. Moreover, increasing the number of humidifier cells can enhance the performance of the humidifier.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Review
Chemistry, Physical
Dongzhi Zhang, Mengyu Wang, Mingcong Tang, Xiaoshuang Song, Xixi Zhang, Zhanjia Kang, Xiaohua Liu, Jianhua Zhang, Qingzhong Xue
Summary: Humidity sensors are important in various fields. This paper summarizes diversiform humidity sensors with different sensing mechanisms and versatile nanomaterials for constructing humidity sensors. The latest progress in wearable and flexible humidity sensors and self-powered humidity sensors is summarized, and the diverse applications of humidity sensors in fields such as human health care and non-contact switches are demonstrated. The challenges and prospects of nanomaterials-based humidity sensors are also discussed.
Article
Multidisciplinary Sciences
Genta Ito, Takahiro Takazono, Naoki Hosogaya, Naoki Iwanaga, Shogo Miyazawa, Satoki Fujita, Hideaki Watanabe, Hiroshi Mukae
Summary: This retrospective observational study evaluated the factors influencing the start date of the influenza epidemic season and the total number of infected persons per 1,000,000 population in 47 prefectures of Japan. Using a Japanese health insurance claims database, single and multiple regression analyses were conducted to assess the relationship between the start time of the epidemic and various factors such as absolute humidity, total visitors, and total population. The study found that the earlier the climate became suitable for virus transmission and the higher the human mobility, the earlier the epidemic season tended to begin.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Environmental
Zaihua Duan, Zhen Yuan, Yadong Jiang, Qiuni Zhao, Qi Huang, Yajie Zhang, Bohao Liu, Huiling Tai
Summary: In this study, a simple, low-cost, and eco-friendly power generation humidity sensor is developed, based on primary battery structure and the hydrophilicity of paper, showing good humidity sensing performance and potential self-powered characteristic.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Shuguo Yu, Chu Chen, Peng Li, Hongyan Zhang, Haiyang Zhang
Summary: A highly sensitive and stable Ti3C2Tx MXenes-RGO humidity sensor was developed for real-time respiratory monitoring. The sensor exhibits high sensitivity, low humidity hysteresis, short response/recovery time, and good stability and repeatability.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Multidisciplinary
Kissan Mistry, Viet Huong Nguyen, Mohamed Arabi, Khaled H. Ibrahim, Hatameh Asgarimoghaddam, Mustafa Yavuz, David Munoz-Rojas, Eihab Abdel-Rahman, Kevin P. Musselman
Summary: This article presents a resonant microcantilever sensor made from a zinc oxide thin film, which achieves ultrahigh sensitivity and self-actuation by changing the material and structural parameters, suitable for detecting low humidity levels.
Article
Physics, Multidisciplinary
Ankur Saxena, Mahesh Kumar, Dhaneshwar Mishra, Kulwant Singh
Summary: This study analyzes an integrated microfluidic pressure sensing mechanism in a microfluidic device, which consists of a poly dimethyl siloxane (PDMS) based material with a microcantilever integrated on one side of the microchannel. The pressure of fluid in the microchannel is measured by the deflection of the PDMS microcantilever. The results show that the Pi-shaped microcantilever achieved the maximum deflection in fluid plasma (37.05 μm) and water (30.98 μm) at a fluid inlet velocity of 8000 μm/s.
Article
Thermodynamics
Alison J. Robey, Laura Fierce
Summary: In temperate climates, the peak in infection rates of enveloped viruses during the winter is likely heightened by seasonal variation in relative humidity within indoor spaces. Relative humidity impacts the seasonal transmission via inactivation rates rather than particle removal.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Materials Science, Ceramics
Xing-Yan An, Le-Xi Zhang, Yue Xing, Yan-Yan Yin, Cheng-Tao Li, Li-Jian Bie
Summary: In this study, BaTiO3 nanorods, nanowires, and micron particles were successfully synthesized using the molten salt synthesis method. The synthesized BaTiO3 samples were assembled into impedimetric humidity sensors, and their performance was systematically tested. The BaTiO3 nanorod humidity sensor showed the fastest response-recovery times and the smallest hysteresis, indicating its potential in human respiratory monitoring.
CERAMICS INTERNATIONAL
(2022)
Article
Critical Care Medicine
Guillaume Le Moigne, Souha Nazir, Victoire Pateau, Emmanuelle Courtois, Erwan L'Her
Summary: This study aimed to assess the effects of high-flow nasal cannula on tidal volume under various conditions. The results showed that increasing gas flow and mouth closing significantly increased tidal volume. Decreasing respiratory rate and mouth closing also increased tidal volume. Time-of-flight camera can be used to monitor the changes in tidal volume during high-flow nasal cannula application.
CRITICAL CARE MEDICINE
(2022)
Article
Physics, Applied
Weikang Lin, Yitian Zhao, Feng Wang, Han Huang, Mingyuan Lu
Summary: A microcantilever bending technique was used to evaluate the interfacial adhesion of a silicon nitride film on a gallium arsenide substrate. The results obtained from experiments and simulations provided values for the interfacial fracture strength and interfacial toughness.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Multidisciplinary Sciences
Ewert Ralf, Alexander Heine, Anne Obst, Karoline Koerner, Veit Hustig-Kittler, Michael Boesche, Mohamed Elhadad, Beate Stubbe, Michael Westhoff
Summary: The establishment of guidelines for long-term noninvasive ventilation treatment in acute hypercapnic exacerbations of chronic obstructive pulmonary disease (AECOPD) has been elusive. Most studies have shown no mortality benefit of this treatment. However, our retrospective analysis of patient data from 2012 to 2019 demonstrated higher survival rates in the group receiving long-term noninvasive ventilation compared to those who didn't. This study provides evidence of the mortality benefit of long-term NIV therapy for AECOPD patients in real-world conditions.
SCIENTIFIC REPORTS
(2023)
Article
Construction & Building Technology
Jin Pan, Julian Tang, Miguela Caniza, Jean-Michel Heraud, Evelyn Koay, Hong Kai Lee, Chun Kiat Lee, Yuguo Li, Alejandra Nava Ruiz, Carlos Francisco Santillan-Salas, Linsey C. Marr
Summary: This study demonstrates the significant influence of indoor climate on the incidence and transmission of respiratory viral infections, particularly in tropical regions. Stronger correlations between indoor temperature, humidity, and outdoor data were found in locations further from the equator, with correlations weakening during the wet season and when air conditioning was in use.
Article
Engineering, Electrical & Electronic
Hong Ding, Yiming Ma, Yangyang Guan, Bing-Feng Ju, Jin Xie
SENSORS AND ACTUATORS A-PHYSICAL
(2019)
Review
Chemistry, Analytical
Jianxiong Zhu, Xinmiao Liu, Qiongfeng Shi, Tianyiyi He, Zhongda Sun, Xinge Guo, Weixin Liu, Othman Bin Sulaiman, Bowei Dong, Chengkuo Lee
Article
Chemistry, Physical
Jianxiong Zhu, Hao Wang, Zixuan Zhang, Zhihao Ren, Qiongfeng Shi, Weixin Liu, Chengkuo Lee
Article
Nanoscience & Nanotechnology
Weixin Liu, Yiming Ma, Yuhua Chang, Bowei Dong, Jingxuan Wei, Zhihao Ren, Chengkuo Lee
Summary: This study developed an LWIR photonic platform for gas sensing, utilizing suspended silicon waveguides and subwavelength grating metamaterial claddings. The platform was shown to have low propagation and bending losses, and functional devices such as grating couplers and Y-junctions demonstrated high performance. Sensing capabilities were showcased with toluene vapor detection, achieving a limit of detection of 75 ppm. The platform showed promise for on-site medical and environmental applications with fast response and recovery times.
Article
Chemistry, Multidisciplinary
Yiming Ma, Yuhua Chang, Bowei Dong, Jingxuan Wei, Weixin Liu, Chengkuo Lee
Summary: Mid-infrared absorption spectroscopy is important for molecule identification and quantification, and integrated photonics technology allows on-chip spectroscopic sensing to minimize device size, cost, and power consumption. The integration of waveguides and photodetectors is essential for on-chip sensing systems, and extending the operating wavelengths to long-wave infrared range faces challenges from both waveguide platforms and photodetection technologies.
Review
Chemistry, Multidisciplinary
Long Liu, Xinge Guo, Weixin Liu, Chengkuo Lee
Summary: This article reviews the development of energy harvesting technology, focusing on its applications in various fields and the future development of smart cities. From the evolution of materials and technologies to specific applications, it explores the role of energy harvesting in smart homes, sensing, robotics, aerospace, and other areas.
Article
Chemistry, Multidisciplinary
Weixin Liu, Yiming Ma, Xinmiao Liu, Jingkai Zhou, Cheng Xu, Bowei Dong, Chengkuo Lee
Summary: We propose an all-dielectric metamaterial-assisted comb (ADMAC) waveguide to greatly enhance the sensing capability. Our sensor operates in the underdeveloped long-wave infrared spectral region, where absorption fingerprints of plentiful chemical bonds are located.
Article
Engineering, Electrical & Electronic
Aojie Quan, Hemin Zhang, Chen Wang, Chenxi Wang, Linlin Wang, Rui Amendoeira Esteves, Yangyang Guan, Chengxin Li, Michael Kraft
Summary: This article presents a mode-localized mass sensor based on thermal-actuation piezoresistive-detection self-oscillated weakly coupled resonators. The theoretical models and simulations of the self-oscillation of the coupled resonators were verified using optical and electrical measurements. The sensor demonstrated high stability, linearity, sensitivity, and resolution, and achieved significant improvement in parametric sensitivity compared to traditional frequency output metric.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Analytical
Tao Wang, Yangyang Guan, Jintao Pang, Ning Li, Jing Nie, Jin Xie
Summary: This paper designs dew point sensors based on MEMS technology and proposes a piecewise function fitting method for dew point identification, which can accurately detect dew point with reduced errors. Experimental results demonstrate that the sensor has good accuracy and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Chengkuo Lee, Jingkai Zhou, Zixuan Zhang, Bowei Dong, Zhihao Ren, Weixin Liu
Summary: This article introduces an artificial intelligence-enhanced metamaterial waveguide sensing platform for the analysis of aqueous mixtures in the mid-infrared spectrum. With this platform, the absorption spectra of ternary mixtures in water can be successfully distinguished and decomposed to predict concentration. Additionally, accurate classification of 64 mixing ratios and four concentrations (below the detection limit of 972 ppm) with a classification accuracy of 98.88% and 92.86% respectively, as well as concentration prediction with root-mean-squared error ranging from 0.107% to 1.436%, are achieved. This research demonstrates the potential of further extending this sensing platform to a mid-infrared spectrometer-on-chip for data analytics of multiple organic components in aqueous environments.
Review
Chemistry, Analytical
Tianyiyi He, Feng Wen, Yanqin Yang, Xianhao Le, Weixin Liu, Chengkuo Lee
ANALYTICAL CHEMISTRY
(2023)
Review
Engineering, Electrical & Electronic
Xinmiao Liu, Weixin Liu, Zhihao Ren, Yiming Ma, Bowei Dong, Guangya Zhou, Chengkuo Lee
Summary: Optomechanical sensing, based on the coupling between mechanical motions and optical resonances, has attracted significant interest in sensor applications due to its small footprint, high sensitivity, low detection limit, and electromagnetic immunity. The development of optomechanical sensors is currently focused on passive optomechanical sensors, electro-optomechanical sensing platforms, and molecular vibration sensing schemes.
INTERNATIONAL JOURNAL OF OPTOMECHATRONICS
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Weixin Liu, Yiming Ma, Yuhua Chang, Bowei Dong, Jingxuan Wei, Chengkuo Lee
Summary: Volatile organic compounds (VOCs) are major indoor pollutants that pose a potential threat to human health, and some VOCs can serve as indicators for specific diseases. A chip-scale subwavelength-engineered suspended silicon waveguide platform has been demonstrated for toluene vapor detection, achieving a detection limit of 6 ppm.
2021 34TH IEEE INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS (MEMS 2021)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Yangyang Guan, Xianhao Le, Jin Xie
2019 IEEE 32ND INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS (MEMS)
(2019)
