Article
Chemistry, Analytical
Shen Liu, Wenqi Yan, Junlan Zhong, Tao Zou, Min Zhou, Peijing Chen, Hang Xiao, Bonan Liu, Zhiyong Bai, Yiping Wang
Summary: This article introduces an all fiber-optic breath sensor based on E-HIPFG, which has ultrafast response and recovery time, insensitivity to external influences, and does not require additional coating materials or fiber architectures, making it suitable for continuous and long-term breath monitoring.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Polymer Science
Yin-Hsuan Chang, Ting-Hung Hsieh, Kai-Chi Hsiao, Ting-Han Lin, Kai-Hsiang Hsu, Ming-Chung Wu
Summary: Human breath contains water, oxygen, carbon dioxide, and gases related to metabolism. A highly sensitive sensing material (WO3/SnO2/Ag/PMMA) fabricated by electrospinning is proposed to detect breath acetone. The material exhibits a sensing limit of 20 ppm and shows specificity for acetone even in ambient humidity.
Article
Materials Science, Multidisciplinary
Xiaoyin Chen, Shuxiang Mei, Wei Zhao, Yuancheng Zhang, Xiaomeng Zhang, Zhe Cui, Peng Fu, Xinchang Pang, Minying Liu, Yong Ye
Summary: A flexible wearable device for humidity detection and breath monitoring was fabricated using a molecular designable thermoplastic polyamide elastomer. The device showed negative humidity sensitivity, wide humidity monitoring range, and stability against bending deformation.
MATERIALS & DESIGN
(2023)
Article
Optics
Weihao Yuan, Lingduo Li, Yu Wang, Zhenggang Lian, Daru Chen, Changyuan Yu, Chao Lu
Summary: An all-fiber sensor based on HCBF for human breath monitoring is proposed and successfully manufactured in this paper. The sensor has a rapid response time and recovery time, and is insensitive to temperature and curvature changes, enabling reliable sensing performance in dynamic environments.
Article
Chemistry, Analytical
Qijie Chang, Daofu Wu, Yanyi Huang, Chengyao Liang, Libo Liu, Huanbin Liu, Yong He, Qiang Huang, Jing Qiu, Xiaosheng Tang
Summary: The lead-free K2CuBr3-based QCM humidity sensor exhibits excellent linear response and stability, making it a promising candidate for real-time breath monitoring.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Electrical & Electronic
Guo-Hua Feng, Pin-Cheng Su
Summary: This article introduces a wearable breath-monitoring device with integrated humidity and ammonia sensing functions, constructed using a piezoelectric cantilever array and PDMS membrane. The fabricated sensors demonstrate fast response times and high sensitivity, capable of monitoring breath parameters and environmental gases, showing potential for wearable applications.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Physical
Seon-Jin Choi, Il-Doo Kim, Hee Jung Park
Summary: In this study, atomically thin 2D metal oxide nanosheets were synthesized and their humidity sensing properties were investigated, showing opposite humidity sensing responses between semiconducting and metallic oxide NSs. The semiconducting manganese oxide NSs exhibited decreasing resistance transitions at low humidity levels due to proton conduction, while the metallic ruthenium oxide NSs showed increasing resistance transitions at high humidity levels as a result of proton trapping by accepting electrons, with faster response and recovery times.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Xifang Li, Zhuang Zhuang, Duo Qi, Chengji Zhao
Summary: A rapid and stable polymeric humidity sensor was demonstrated using electrospun sulfonated poly (ether ether ketone)/polyvinyl butyral (SPEEK/PVB) composite nanofiber, showing improved sensing characteristics with SPEEK and PVB ratio of 1:3. The composite nanofiber humidity sensor exhibited high sensitivity, wide working range, small hysteresis, fast response time, rapid recovery time, and stable performance, making it promising for real-time humidity monitoring and non-contact sensing applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Dingyi Feng, Hongrong Zheng, Hao Sun, Jinze Li, Jiawei Xi, Li Deng, Yasong Guo, Biqiang Jiang, Jianlin Zhao
Summary: A fiber-optic humidity sensor based on excessively tilted fiber grating (Ex-TFG) wrapped with tin dioxide (SnO2)/ polyvinyl alcohol (PVA) hybrid nanofibers is presented. The humidity rise causes changes in refractive index and geometry size, resulting in changes in the transmitted spectrum of the Ex-TFG. The wrapped grating shows significantly improved humidity sensitivity compared to pure PVA film coated ones.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Engineering, Electrical & Electronic
K. Thiyagarajan, G. K. Rajini, Debashis Maji
Summary: The paper introduces a low-cost, non-invasive paper-based sensor for respiration monitoring, utilizing the humidity sensing properties of paper. The composite interdigitated electrodes of the sensor exhibit fast response times and are suitable for monitoring different breathing conditions, making it a potential wearable product during the current COVID-19 pandemic situation.
IEEE SENSORS JOURNAL
(2021)
Article
Multidisciplinary Sciences
Satoko Honda, Hyuga Hara, Takayuki Arie, Seiji Akita, Kuniharu Takei
Summary: This study develops a flexible humidity sensor that can be attached to a mask for wireless home-use respiration monitoring. The sensor has high sensitivity and stability, and can continuously track respiratory conditions during sleep, aiding in the identification of symptoms of sleep apnea.
Article
Nanoscience & Nanotechnology
Wenfu Lin, Yan Huang, Zhenru Li, Jiongshen Pan, Tiansheng Huang, Lili Liang, Yanzhen Tan, Jie Li, Li-Peng Sun, Bai-Ou Guan
Summary: In this study, a high-performance relative humidity (RH) sensor was demonstrated by supporting ZIF-90-derived porous zinc oxide (ZnO) onto an optical microfiber Sagnac interferometer (OMSI). The ZnO fiber sensor prepared at 500°C showed the best humidity-sensing performance, with high sensitivity and fast response/recovery time. The sensor also showed potential for human respiration monitoring.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Tae Hoon Eom, Sang Eun Lee, Yeong Jae Kim, Sungkyun Choi, Gi Baek Nam, Jung-El Ryu, Tae Hyung Lee, Jin Wook Yang, Sung Hwan Cho, Seung Ju Kim, Sang Eon Jun, Seonyong Lee, Seungsoo Kim, Hee Jung Park, Ho Won Jang
Summary: Chemoresistive humidity sensors based on ultrathin V2O5•nH2O nanobelts show promising performance in real-time breath monitoring, with rapid response and recovery, as well as excellent selectivity to humidity.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Cheng-Tao Li, Meng-Xiao Chong, Le-Xi Zhang, Bo Tang, Li-Jian Bie
Summary: In this study, a high-performance impedimetric humidity sensor based on all-inorganic lead-free HP Cs2TeBr6 was developed for the first time. The sensor achieved ultra-high response value, short response time, and good stability, making it suitable for applications in smart home and medical detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
He Yu, Cong Wang, Fanyi Meng, Jin Xiao, Junge Liang, Hyunseok Kim, Sanghoon Bae, Danqing Zou, Eun-Seong Kim, Nam-Young Kim, Meng Zhao, Baoqiang Li
Summary: This research presents a microwave transduction-based humidity sensor with excellent real-time humidity detection and high sensitivity under microwave excitation, suitable for medical applications and wearable electronic devices.
Article
Engineering, Environmental
Yifan Zhang, Patil Aniruddha, Chen Hou, Di Lu, Wu Qiu, Lingqing Kong, Ronghui Wu, Liyun Ma, Rui Yu, Weidong Yu, Xiang Yang Liu
Summary: This study achieved high sensitivity and biocompatibility sensors by incorporating Polyurethane into Silk fibroin, which can be used for wearable smart devices such as smart wristbands.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Textiles
Qianqian Shi, Jiang Wang, Yuze Zhang, Qian Ding, Nicholus Tayari Akankwasa, Huiting Lin, Jun Wang
Summary: This study compares the airflow characteristics and yarn properties of conventional and dual-feed-opening rotor spinning units. The results show that the dual-feed-opening model has a more balanced airflow field distribution and superior yarn performance. Additionally, the dual-feed-opening model demonstrates equivalent contributions of two separated opening and fiber transmission systems to the airflow field distribution and yarn formation.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Materials Science, Textiles
Malik Y. H. Saty, Nicholus Tayari Akankwasa, Jun Wang
Summary: Research on the effects of a three-dimensional printed guiding device on airflow characteristics and yarn properties in compact spinning systems was conducted through numerical and experimental investigations. Results showed that the guiding device increased the active area of negative pressure, leading to improved yarn strength, hairiness, and evenness.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Physics, Multidisciplinary
Wenli Zhang, Xiaotian Liu, Youhui Lin, Liyun Ma, Linqing Kong, Guangzong Min, Ronghui Wu, Sharwari K. Mengane, Likun Yang, Aniruddha B. Patil, Xiang Yang Liu
Summary: A flexible, transparent, and disposable solid-state pH sensor based on PdNPs/NC composite material has been developed. This sensor can accurately and in real-time measure the pH of body fluids, and it exhibits high sensitivity and stability.
Article
Materials Science, Textiles
Yujuan Wang, Wengang Li, Jun Wang
Summary: A Kubelka-Munk iteration model was proposed to assist in the design of hybrid filaments before spinning. It was used in combination with a fabric model to calculate colors and color mixing of fabric surfaces. The model showed a high correlation with captured fabric images and successfully predicted color differences for different fabric structures.
TEXTILE RESEARCH JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Ronghui Wu, Liyun Ma, Xiang Yang Liu
Summary: The silk fibers from Bombyx mori show great potential for applications in smart textiles, such as fiber sensors, actuators, optical fibers, and energy harvesters. By reconstructing/functionalizing silk fibroin at a mesoscopic scale, it is possible to create smart fiber devices with functions like sensors, actuators, optical fibers, and energy harvesters. Spinning technologies, such as wet spinning, dry spinning, microfluidic spinning, electrospinning, and direct writing, can be used to self-assemble silk fibroin solutions into regenerated fiber devices.
Article
Materials Science, Textiles
Lijuan Liu, Xiaochuan Chen, Yong Li, Jun Wang
Summary: In this study, a yarn winding model was established based on the principle of yarn winding forming to analyze the change of yarn winding tension in the winding process. The finite element simulation was conducted using Ls-Dyan software. It was found that both tensions increase with the increase of linear density and winding speed, which was verified by the good agreement between simulation results and experimental results.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Chemistry, Physical
Ronghui Wu, Sai Liu, Zaifu Lin, Shuihong Zhu, Liyun Ma, Zhong Lin Wang
Summary: This study presents the first industrially exploited 3D braided stretchable hierarchical interlocking fancy-yarn TENG (3D HIFY-TENG) for self-powered energy harvesting and biomechanical sensing. The 3D HIFY-TENG demonstrates mechanical robustness, stretchability, weavability, washability, and human-body comfort. Moreover, multifunctional 3D HIFY-TENG fabrics are explored, and a smart fitness system is developed for real-time exercise detection and posture correction.
ADVANCED ENERGY MATERIALS
(2022)
Article
Materials Science, Textiles
Yingdong Shi, Yong Li, Xiaochuan Chen, Jun Wang
Summary: A finite element model based on three-dimensional beam elements is proposed to study the tension variation of cotton yarn in the winding process. The model can save computing resources while considering the yarn stacking effect and simulate the winding of nine-layer yarn on the bobbin. The simulation results have an average relative error of 14.09% and a maximum relative error of 17.06% compared to experimental data.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Materials Science, Textiles
Jule Fan, Yuze Zhang, Jun Wang
Summary: This study established a dynamic drafting model to simulate the drafting process affected by the frictional force between fibers. The simulation accurately captured the dynamic drafting process and accelerating process, which were validated by experimental data. The model provides valuable insights into the influence of drafting conditions on the drafting process.
TEXTILE RESEARCH JOURNAL
(2023)
Article
Chemistry, Physical
Juyeol Bae, Ronghui Wu, Taesung Kim
Summary: Micro/nanofluidic devices have been widely used for processing biological, material, and chemical samples, but their reliance on 2D fabrication schemes has limited further innovation. This study proposes a 3D manufacturing method using laminated object manufacturing (LOM) that involves material selection, molding, and lamination techniques. The fabrication method demonstrates the production of interlayer films with multi-layered micro-/nanostructures and through-holes. By using the LOM approach, the number of alignments and laminations can be reduced compared to conventional methods. The 3D manufacturing method enables the development of a nanochannel-based droplet generator for mass production.
Article
Materials Science, Textiles
Ying Wu, Ren Wang, Lin Lou, Lali Wang, Jun Wang
Summary: To achieve enhanced accuracy of fabric representation and defect detection, an innovative approach using a sparse dictionary with small patches was proposed. This algorithm was tested on eight weave patterns and showed effective results in characterizing fabric texture and detecting defects. The algorithm offers a simple and scalable method for fabric texture characterization and defect detection without the need for feature extraction or prior information.
FIBRES & TEXTILES IN EASTERN EUROPE
(2022)
Article
Materials Science, Multidisciplinary
Xiaoyu Dong, Qiang Liu, Sai Liu, Ronghui Wu, Liyun Ma
Summary: This paper investigates the fabrication and application of regenerated silk fibroin/carbon nanotube composite film, which shows potential applications in flexible capacitive-type pressure sensors and wearable triboelectric nanogenerators. By optimizing the composite ratio, the electrical conductivity and mechanical properties of the film were improved. Furthermore, the paper demonstrates that the RSF/CNT film can be used as an epidermal self-powered sensor for multifunctional human motion monitoring and Morse code compilation.
ADVANCED FIBER MATERIALS
(2022)