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

Chaehyun Ryu; Sugato Hajra; Manisha Sahu; Soon In Jung; Il Ryu Jang; Hoe Joon Kim

doi:10.1016/j.matlet.2021.131308

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

Chaehyun Ryu, Sugato Hajra, Manisha Sahu, Soon In Jung, Il Ryu Jang, Hoe Joon Kim

Department of Robotics and Mechatronics Engineering

Daegu Gyeongbuk Institute of Science and Technology

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

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.

Original language	English
Article number	131308
Journal	Materials Letters
Volume	309
DOIs	https://doi.org/10.1016/j.matlet.2021.131308
State	Published - 15 Feb 2022

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

Keywords

Bismuth Titanate
Flexible tactile sensor
Human motion detection
PVDF

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.matlet.2021.131308

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title = "PVDF-bismuth titanate based self-powered flexible tactile sensor for biomechanical applications",

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.",

keywords = "Bismuth Titanate, Flexible tactile sensor, Human motion detection, PVDF",

author = "Chaehyun Ryu and Sugato Hajra and Manisha Sahu and Jung, {Soon In} and Jang, {Il Ryu} and Kim, {Hoe Joon}",

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AU - Ryu, Chaehyun

AU - Hajra, Sugato

AU - Sahu, Manisha

AU - Jung, Soon In

AU - Jang, Il Ryu

AU - Kim, Hoe Joon

PY - 2022/2/15

Y1 - 2022/2/15

N2 - 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.

AB - 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.

KW - Bismuth Titanate

KW - Flexible tactile sensor

KW - Human motion detection

KW - PVDF

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JF - Materials Letters

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ER -

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

Abstract

Bibliographical note

Keywords

UN SDGs

Access to Document

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