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PVDF-bismuth titanate based self-powered flexible tactile sensor for biomechanical applications

Title
PVDF-bismuth titanate based self-powered flexible tactile sensor for biomechanical applications
Authors
Ryu, ChaehyunHajra, SugatoSahu, ManishaJung, Soon InJang, IlryuKim, Hoe Joon
DGIST Authors
Ryu, Chaehyun; Hajra, Sugato; Sahu, Manisha; Jung, Soon In; Jang, Ilryu; Kim, Hoe Joon
Issue Date
2022-02
Citation
Materials Letters, 309
Type
Article
Author Keywords
Bismuth TitanateFlexible tactile sensorHuman motion detectionPVDF
ISSN
0167-577X
Abstract
Flexible piezoelectric tactile sensors have attracted tremendous attention towards bio-healthcare monitoring and wearable applications. For piezoelectric tactile sensors, a careful selection of materials is important to maximize the piezoelectric effect and improve the measurement sensitivity. In this work, we synthesized a bismuth titanate, Bi4Ti3O12 (BiTO), and polyvinylidene fluoride (PVDF) composite thin film-based self-powered tactile sensor. The electrical output was measured by alteration of the BiTO composition in the PVDF and the composite film thickness. The PENG device based on PVDF-10 wt% BiTO and 40 μm thickness deliver the highest voltage output of 41 V and maximum power density of 4.3 mW/m2. The sensor was further attached to the fingers or vocal cords demonstrating the detection of the different human motions without an external power source. These results pave the way towards the development of portable self-powered biomechanical sensors for rehabilitation, health care monitoring, and human–machine interface. © 2021 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/15980
DOI
10.1016/j.matlet.2021.131308
Publisher
Elsevier BV
Related Researcher
  • Author Kim, Hoe Joon Nano Materials and Devices Lab
  • Research Interests MEMS/NEMS; Micro/Nano Sensors; Piezoelectric Devices; Nanomaterials; Heat Transfer; Atomic Force Microscope
Files:
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Collection:
Department of Robotics and Mechatronics EngineeringNano Materials and Devices Lab1. Journal Articles


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