Multi-Layered, Hierarchical Fabric-Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range

Soonjae Pyo, Jaeyong Lee, Wondo Kim, Eunhwan Jo, Jongbaeg Kim

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Resistive tactile sensors based on changes in contact area have been extensively explored for a variety of applications due to their outstanding pressure sensitivity compared to conventional tactile sensors. However, the development of tactile sensors with high sensitivity in a wide pressure range still remains a major challenge due to the trade-off between sensitivity and linear detection range. Here, a tactile sensor comprising stacked carbon nanotubes and Ni-fabrics is presented. The hierarchical structure of the fabrics facilitates a significant increase in contact area between them under pressure. Additionally, a multi-layered structure that can provide more contact area and distribute stress to each layer further improves the sensitivity and linearity. Given these advantages, the sensor presents high sensitivity (26.13 kPa−1) over a wide pressure range (0.2–982 kPa), which is a significant enhancement compared with the results obtained in previous studies. The sensor also exhibits outstanding performances in terms of response time, repeatability, reproducibility, and flexibility. Furthermore, meaningful applications of the sensor, including wrist-pulse-signal analysis, flexible keyboards, and tactile interface, are successfully demonstrated. Based on the facile and scalable fabrication technique, the conceptually simple but powerful approach provides a promising strategy to realize next-generation electronics.

Original languageEnglish
Article number1902484
JournalAdvanced Functional Materials
Volume29
Issue number35
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

linearity
sensitivity
Sensors
sensors
wrist
signal analysis
flexibility
Haptic interfaces
carbon nanotubes
Carbon Nanotubes
Signal analysis
fabrication
augmentation
pulses
electronics
Carbon nanotubes
Electronic equipment
Fabrication

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

@article{6a045f6d7dd447b5b9e5ada96ec1161a,
title = "Multi-Layered, Hierarchical Fabric-Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range",
abstract = "Resistive tactile sensors based on changes in contact area have been extensively explored for a variety of applications due to their outstanding pressure sensitivity compared to conventional tactile sensors. However, the development of tactile sensors with high sensitivity in a wide pressure range still remains a major challenge due to the trade-off between sensitivity and linear detection range. Here, a tactile sensor comprising stacked carbon nanotubes and Ni-fabrics is presented. The hierarchical structure of the fabrics facilitates a significant increase in contact area between them under pressure. Additionally, a multi-layered structure that can provide more contact area and distribute stress to each layer further improves the sensitivity and linearity. Given these advantages, the sensor presents high sensitivity (26.13 kPa−1) over a wide pressure range (0.2–982 kPa), which is a significant enhancement compared with the results obtained in previous studies. The sensor also exhibits outstanding performances in terms of response time, repeatability, reproducibility, and flexibility. Furthermore, meaningful applications of the sensor, including wrist-pulse-signal analysis, flexible keyboards, and tactile interface, are successfully demonstrated. Based on the facile and scalable fabrication technique, the conceptually simple but powerful approach provides a promising strategy to realize next-generation electronics.",
author = "Soonjae Pyo and Jaeyong Lee and Wondo Kim and Eunhwan Jo and Jongbaeg Kim",
year = "2019",
month = "1",
day = "1",
doi = "10.1002/adfm.201902484",
language = "English",
volume = "29",
journal = "Advanced Functional Materials",
issn = "1616-301X",
publisher = "Wiley-VCH Verlag",
number = "35",

}

Multi-Layered, Hierarchical Fabric-Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range. / Pyo, Soonjae; Lee, Jaeyong; Kim, Wondo; Jo, Eunhwan; Kim, Jongbaeg.

In: Advanced Functional Materials, Vol. 29, No. 35, 1902484, 01.01.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Multi-Layered, Hierarchical Fabric-Based Tactile Sensors with High Sensitivity and Linearity in Ultrawide Pressure Range

AU - Pyo, Soonjae

AU - Lee, Jaeyong

AU - Kim, Wondo

AU - Jo, Eunhwan

AU - Kim, Jongbaeg

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Resistive tactile sensors based on changes in contact area have been extensively explored for a variety of applications due to their outstanding pressure sensitivity compared to conventional tactile sensors. However, the development of tactile sensors with high sensitivity in a wide pressure range still remains a major challenge due to the trade-off between sensitivity and linear detection range. Here, a tactile sensor comprising stacked carbon nanotubes and Ni-fabrics is presented. The hierarchical structure of the fabrics facilitates a significant increase in contact area between them under pressure. Additionally, a multi-layered structure that can provide more contact area and distribute stress to each layer further improves the sensitivity and linearity. Given these advantages, the sensor presents high sensitivity (26.13 kPa−1) over a wide pressure range (0.2–982 kPa), which is a significant enhancement compared with the results obtained in previous studies. The sensor also exhibits outstanding performances in terms of response time, repeatability, reproducibility, and flexibility. Furthermore, meaningful applications of the sensor, including wrist-pulse-signal analysis, flexible keyboards, and tactile interface, are successfully demonstrated. Based on the facile and scalable fabrication technique, the conceptually simple but powerful approach provides a promising strategy to realize next-generation electronics.

AB - Resistive tactile sensors based on changes in contact area have been extensively explored for a variety of applications due to their outstanding pressure sensitivity compared to conventional tactile sensors. However, the development of tactile sensors with high sensitivity in a wide pressure range still remains a major challenge due to the trade-off between sensitivity and linear detection range. Here, a tactile sensor comprising stacked carbon nanotubes and Ni-fabrics is presented. The hierarchical structure of the fabrics facilitates a significant increase in contact area between them under pressure. Additionally, a multi-layered structure that can provide more contact area and distribute stress to each layer further improves the sensitivity and linearity. Given these advantages, the sensor presents high sensitivity (26.13 kPa−1) over a wide pressure range (0.2–982 kPa), which is a significant enhancement compared with the results obtained in previous studies. The sensor also exhibits outstanding performances in terms of response time, repeatability, reproducibility, and flexibility. Furthermore, meaningful applications of the sensor, including wrist-pulse-signal analysis, flexible keyboards, and tactile interface, are successfully demonstrated. Based on the facile and scalable fabrication technique, the conceptually simple but powerful approach provides a promising strategy to realize next-generation electronics.

UR - http://www.scopus.com/inward/record.url?scp=85067389886&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067389886&partnerID=8YFLogxK

U2 - 10.1002/adfm.201902484

DO - 10.1002/adfm.201902484

M3 - Article

AN - SCOPUS:85067389886

VL - 29

JO - Advanced Functional Materials

JF - Advanced Functional Materials

SN - 1616-301X

IS - 35

M1 - 1902484

ER -