정렬된 압전 나노섬유 기반 미세 변형 측정 유연 센서 및 맥박 측정으로의 응용
- Title
- 정렬된 압전 나노섬유 기반 미세 변형 측정 유연 센서 및 맥박 측정으로의 응용
- Other Titles
- Flexible sensor on the basis of aligned piezoelectric nanofibers for measurement of small deformations and its application to pulse monitoring
- Author
- 윤종헌
- Keywords
- lexible electronics (유연전자기기); Biosignal monitoring system (생체 신호 모니터링 시스템); Electrospun nanofiber (전기 방사 나노섬유); Piezoelectricity (압전); Mechanical sensor (기계적 센서); Pulse sensing (맥박 감지)
- Issue Date
- 2020-02
- Publisher
- 한국정밀공학회지
- Citation
- Journal of the Korean Society for Precision Engineering, v. 37, NO. 2, Page. 125-131
- Abstract
- Recently, applying nanoscale functional materials, there have been great advances in the flexible sensor system, which provides a large number of applications for soft electronics, such as skin-attachable sensors, artificial electronic skins, and soft robotic systems. Here, we developed a highly sensitive and flexible device on the basis of polymeric piezoelectric nanofibers and elastomeric packing structures. To produce the nanofibers, we applied the electrospinning process with a representative piezoelectric co-polymer, poly (vinylidenefluoride-co-trifluoroethylene) (PVDF-TrFE). Unlike the conventional electrospinning, we applied an anisotropic fiber collection system, which could obtain uniaxially aligned nanofiber array. The aligned nanofibers were sandwich-packed with bridge-shaped PDMS substrates, thereby integrating the flexible piezoelectric sensor. As an external force made a deflection of the bridge in the sensor, the embedded nanofibers generated piezoelectricity in a longitudinal direction of the fibers. The piezoelectric sensor generated good discernable outputs versus the varied mechanical input deflection from tens of micrometers to the sub-micrometer. With this great sensing ability, we could monitor heart pulse signals on the wrist skin by measuring tiny deflections generated from the expansion of the radial artery underneath the skin. Our study suggests a potential application of flexible sensor in the field of wearable health-monitoring medical systems. © The Korean Society for Precision Engineering This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
- URI
- https://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE09298554&language=ko_KR&hasTopBanner=truehttps://repository.hanyang.ac.kr/handle/20.500.11754/178782
- ISSN
- 1225-9071;2287-8769
- DOI
- 10.7736/JKSPE.019.137
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML