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Patterned Metal/Polymer Strain Sensor with Good Flexibility, Mechanical Stability and Repeatability for Human Motion Detection
2019
Micromachines
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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
2018
Nanomaterials
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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
2020
Periodica Polytechnica Electrical Engineering and Computer Science
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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
2018
Japanese Journal of Applied Physics
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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
2020
Polymers
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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
2011
2011 IEEE SENSORS Proceedings
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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
2022
Polymers
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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
2021
Polymers
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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
2022
Coatings
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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
2021
Nanomaterials
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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
2022
Chemosensors
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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
2019
Composites. Part A, Applied science and manufacturing
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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
2021
Nanomaterials
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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
2011
2011 International Reliability Physics Symposium
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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
2020
ACS Omega
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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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