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Patterned Metal/Polymer Strain Sensor with Good Flexibility, Mechanical Stability and Repeatability for Human Motion Detection

Xu Zheng, Qing Wang, Jinjin Luan, Yao Li, Ning Wang
2019 Micromachines  
In this work, a flexible wearable strain sensor with high sensitivity and good repeatability was fabricated based on a patterned metal/polymer composite material fabricated through nanoimprint lithography  ...  Various activities were successfully detected in real-time, such as swallowing, closing/opening of the mouth, and multi-angle bending of elbow, which illustrates the proposed sensor's potential as a wearable  ...  Great progress has been made in fabricating wearable strain sensors using metallic and carbon nanomaterials on flexible polymer to achieve these properties [8] [9] [10] [11] [12] .  ... 
doi:10.3390/mi10070472 pmid:31311117 pmcid:PMC6681088 fatcat:aayc6aa7ejb4rmrktke2smpldm

Self-Powered Wearable Pressure Sensors with Enhanced Piezoelectric Properties of Aligned P(VDF-TrFE)/MWCNT Composites for Monitoring Human Physiological and Muscle Motion Signs

Aochen Wang, Ming Hu, Liwei Zhou, Xiaoyong Qiang
2018 Nanomaterials  
the polymer chains.  ...  The resulting composite membrane was employed as a piezoelectric pressure sensor to monitor small physiological signals including pulse, breath, and small motions of muscle and joints such as swallowing  ...  (e) Schematic drawings showing the structure and flexibility of the sensor. (f) A flexible sensor sample and inset showing the front of the sensor.  ... 
doi:10.3390/nano8121021 pmid:30544597 pmcid:PMC6315454 fatcat:leg2xskxbjcujcouveplunbyfi

Biosensors Technologies for Point-of-Care Testing – A Review

Sylwia Baluta, Joanna Cabaj, Karol Malecha
2020 Periodica Polytechnica Electrical Engineering and Computer Science  
In this review, we present the application of biosensing platforms in one chip, which can be used in wireless, wearable and swallowable sensors for POC diagnostic.  ...  Miniaturization and integration of important components result in many advantages: reducing the time of analysis and laboratory processes, automatization of measurements, compactness, and portability.  ...  Acknowledgment The authors gratefully acknowledge Wroclaw University of Science and Technology for financial support.  ... 
doi:10.3311/ppee.15358 fatcat:nqg22dlw5vbhnbc3atriktgwte

Application of piezoelectric braided cord to dysphagia-detecting system

Yoshiro Tajitsu, Atsushi Suehiro, Kana Tsunemine, Kyousuke Katsuya, Yuhei Kawaguchi, Yusuke Kuriwaki, You Sugino, Hiroaki Nishida, Morimasa Kitamura, Koichi Omori
2018 Japanese Journal of Applied Physics  
In addition, the subject experienced little restriction of the motion during the measurement using our system.  ...  We developed a system with a simple structure for sensing movement during swallowing through simple operations using piezoelectric poly(L-lactic acid) (PLLA) braided cords as a motion sensor.  ...  The experimental measurement system used in this work was partly supported by Grants-in-Aid for Scientific Research (Nos. 2528059 and 15K13714) from the Ministry of Education, Culture, Sports, Science  ... 
doi:10.7567/jjap.57.11ug02 fatcat:xz6j7wnvqjgo5m4575cgz24wou

A Highly Sensitive and Flexible Capacitive Pressure Sensor Based on a Porous Three-Dimensional PDMS/Microsphere Composite

Young Jung, Wookjin Lee, Kyungkuk Jung, Byunggeon Park, Jinhyoung Park, Jongsoo Ko, Hanchul Cho
2020 Polymers  
In recent times, polymer-based flexible pressure sensors have been attracting a lot of attention because of their various applications.  ...  A highly sensitive and flexible sensor is suggested, capable of being attached to the human body, based on a three-dimensional dielectric elastomeric structure of polydimethylsiloxane (PDMS) and microsphere  ...  Introduction Recently, polymer-based flexible pressure sensors have been attracting attention due to their applications in electronic skin [1, 2] , flexible touch display [3] , health care [4] [5] [  ... 
doi:10.3390/polym12061412 pmid:32599851 pmcid:PMC7361688 fatcat:mmnvobs4t5eqfpw5b3avwpkmhu

Embedded multiplexed polymer optical fiber sensor for esophageal manometry

Bram Van Hoe, Erwin Bosman, Jeroen Missinne, Geert Van Steenberge, Peter Van Daele, Wei Zhang, Ian Johnson, Kate Sugden, David J. Webb, Kyriacos Kalli
2011 2011 IEEE SENSORS Proceedings  
A new sensing approach which could fulfill all these needs is presented in this paper consisting of an embedded polymer fiber sensor, based on multiplexed fiber Bragg gratings.  ...  A response to a radial pressure almost 6 times that of a comparable silica fiber based sensor is obtained.  ...  Van Hoe is supported by a Ph.D grant of the Institute for the Promotion of Innovation through Science and Technology in Flanders (IWT-Vlaanderen).  ... 
doi:10.1109/icsens.2011.6127216 fatcat:uxznu54jevcbnlr6reo6asr7p4

Intelligent Nanomaterials for Wearable and Stretchable Strain Sensor Applications: The Science behind Diverse Mechanisms, Fabrication Methods, and Real-Time Healthcare

Veluru Jagadeesh Babu, Merum Anusha, Merum Sireesha, Subramanian Sundarrajan, Syed Sulthan Alaudeen Abdul Haroon Rashid, A. Senthil Kumar, Seeram Ramakrishna
2022 Polymers  
As social distancing cannot be ruled out as a measure to stop the spread of COVID-19 virus, wearable sensors could play a significant role in technologically impacting people's consciousness.  ...  This report is based on an extensive literature survey of fabrication of stretchable strain sensors (SSS) based on nanomaterials in the fields of healthcare, sports, and entertainment.  ...  Conflicts of Interest: There are no conflicts to declare.  ... 
doi:10.3390/polym14112219 pmid:35683893 pmcid:PMC9182624 fatcat:gbxgq5aifndnvhq5v3mpiznexa

Artificial Intelligence-Assisted Throat Sensor Using Ionic Polymer–Metal Composite (IPMC) Material

Jai-Hua Lee, Pei-Song Chee, Eng-Hock Lim, Chun-Hui Tan
2021 Polymers  
Here, we propose a smart and non-invasive throat sensor that can be fabricated using an ionic polymer–metal composite (IPMC) material.  ...  A support vector machine algorithm is used to train the sensor in recognizing the pattern of the throat movements, with a high accuracy of 95%.  ...  Acknowledgments: We would like to thank the Ministry of Higher Education (MoHE) Malaysia for their financial support (Project: FRGS/1/2019/TK04/UTAR/02/1; Vote: 8073/C01).  ... 
doi:10.3390/polym13183041 pmid:34577942 fatcat:ckm5jrlz4nbhfd242ja5fbazji

All-Fabric-Based Flexible Capacitive Sensors with Pressure Detection and Non-Contact Instruction Capability

Xiaorui Ye, Mingwei Tian, Ming Li, Hang Wang, Yangcheng Shi
2022 Coatings  
The sensor can successfully detect human motion, such as finger bending, saliva swallowing, etc.  ...  Moreover, the sensor exhibits superior non-contact detection performance with a detection distance of 15 cm and a maximum relative capacitance change of 10%.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/coatings12030302 fatcat:lumfvvlnfbb3xler5lvb74x7ni

Highly Skin-Conformal Laser-Induced Graphene-Based Human Motion Monitoring Sensor

Sung-Yeob Jeong, Jun-Uk Lee, Sung-Moo Hong, Chan-Woo Lee, Sung-Hwan Hwang, Su-Chan Cho, Bo-Sung Shin
2021 Nanomaterials  
An e-skin and 3-D flexible strain sensor was developed with the formation of laser induced graphene (LIG) on the skin-like substrates.  ...  Bio-compatible strain sensors based on elastomeric conductive polymer composites play pivotal roles in human monitoring devices.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/nano11040951 pmid:33917897 pmcid:PMC8068237 fatcat:avjyosgh7zgp3g7xicbf5wgy5q

Flexible Sensors Based on Conductive Polymers

Ileana-Alexandra Pavel, Sophie Lakard, Boris Lakard
2022 Chemosensors  
Because of the ease of incorporating different elements to form composite materials, conductive polymers have been widely used in a plethora of applications.  ...  sensors  ...  Overall, the preferred method for the fabrication of conductive polymers for flexible sensors is the in situ polymerization.  ... 
doi:10.3390/chemosensors10030097 fatcat:rdclxfvhvrgepcmokukurznauq

Synergistic effects of hybrid conductive nanofillers on the performance of 3D printed highly elastic strain sensors

Dong Xiang, Xuezhong Zhang, Eileen Harkin-Jones, Wanqiu Zhu, Zuoxin Zhou, Yucai Shen, Yuntao Li, Chunxia Zhao, Ping Wang
2019 Composites. Part A, Applied science and manufacturing  
In this work, thermoplastic polyurethane based conductive polymer composites containing carbon nanotubes (CNTs) and synthesized silver nanoparticles (AgNPs) were used to fabricate highly elastic strain  ...  The printability of the materials was improved with the introduction of the nanofillers, and the size and content of the AgNPs significantly influenced the sensing performance of the 3D printed sensors  ...  The sensor was then used to detect the opening of the mouth. For this, the flexible sensor was attached to the cheek (Fig. 17c ).  ... 
doi:10.1016/j.compositesa.2019.105730 fatcat:qbvluwydzjazjeoiyuuxgd6uni

Cost-Effective Fabrication of Transparent Strain Sensors via Micro-Scale 3D Printing and Imprinting

Rui Wang, Xiaoyang Zhu, Luanfa Sun, Shuai Shang, Hongke Li, Wensong Ge, Hongbo Lan
2021 Nanomaterials  
The fabricated flexible strain sensor with embedded MWCNT networks had superior gauge factors of 90, 285, and 1500 at strains of 6.6%, 14%, and 20%, respectively.  ...  In addition, the flexible strain sensors with an optical transparency of 84% offered good stability and durability with no significant change in resistance after 8000 stretch-release cycles.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/nano12010120 pmid:35010071 pmcid:PMC8746503 fatcat:4vnqho3l2bbvtmq4b5cbav7cvq

A swallowable diagnostic capsule with a direct access sensor using Anisotropic Conductive Adhesive

Pio Jesudoss, Alan Mathewson, Karen Twomey, Frank Stam, William M.D. Wright
2011 2011 International Reliability Physics Symposium  
Swallowable diagnostic sensing capsules are an example of this.  ...  In this paper, a novel direct access sensor (DAS) has been demonstrated which uses Flip Chip (FC) technology to expose the sensor to the liquid medium.  ...  But in none of the diagnostic sensing capsules, the sensor attachment -the first level packaging of the sensor in a swallowable capsule-is achieved by Flip Chip Over Hole (FCOH) method using anisotropic  ... 
doi:10.1109/irps.2011.5784481 fatcat:3ktr4fysvzfzljwtnwbqw6uxty

Three-Dimensional Multistack-Printed, Self-Powered Flexible Pressure Sensor Arrays: Piezoelectric Composites with Chemically Anchored Heterogeneous Interfaces

Suk-In Jeong, Eun Jung Lee, Gyu Ri Hong, Yejin Jo, Sung Mook Jung, Su Yeon Lee, Youngmin Choi, Sunho Jeong
2020 ACS Omega  
Recently, the development of pressure sensor devices composed of mechanically flexible materials has gained a tremendous attention for emerging wearable electronics applications.  ...  Compared with various sensing materials, piezoelectric composite materials provide a characteristic advantage of enabling energy unit-free integration of sensor compartments.  ...  We fabricated bar-coated sensor devices using the SEBSm− PEI-PZT NPs instead of pristine PZT NPs.  ... 
doi:10.1021/acsomega.9b03753 pmid:32039332 pmcid:PMC7003512 fatcat:qewamnwupvf4vb775tastghhoy
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