Publications
1.
Li, Jing; Orrego, Santiago; Pan, Junjie; He, Peisheng; Kang, Sung Hoon
Ultrasensitive, flexible, and low-cost nanoporous piezoresistive composite for tactile pressure sensing Journal Article
In: Nanoscale, vol. 11, pp. 2779-2786, 2019.
@article{Li2019,
title = {Ultrasensitive, flexible, and low-cost nanoporous piezoresistive composite for tactile pressure sensing},
author = {Jing Li and Santiago Orrego and Junjie Pan and Peisheng He and Sung Hoon Kang},
url = {https://pubs.rsc.org/en/content/articlepdf/2014/NR/C8NR09959F?page=search},
doi = {10.1039/C8NR09959F.},
year = {2019},
date = {2019-01-02},
journal = {Nanoscale},
volume = {11},
pages = {2779-2786},
abstract = {Highly sensitive flexible tactile sensors are of continuing interest for various applications including wearable devices, human- machine interface, and internet of things. Current technologies for high sensitivity piezoresistive sensors rely on costly materials and/or fabrication methods such as graphene-based and micro-structured composites limiting accessibility and scalability. Here, we report a facile sacrificial casting-etching method to synthesize nanoporous carbon nanotube/polymer composites for ultra-sensitive and low-cost piezoresistive pressure sensors. Our synthesis method overcomes the limitations of traditional solution-dip-coating method for adhering nanoscale conductive materials to the nanoscale porous surface. Importantly, we show ultra-high sensitivity with a strain gauge factor over 300, which is ~50 times higher than that of traditional CNT-based piezoresistive sensors and ~10 times higher than most of graphene-based ones. For practical tactile sensing applications, we demonstrate that the sensors can detect both gentle pressures (1 Pa-1 kPa) and low-pressure (1 kPa-25 kPa) with a fraction of cost. Our nanoporous polymer composite could contribute to expanding the scope of using nanocomposites for applications including subtle locomotion sensing, interactive human-machine interface systems, and internet of things from its easy tunability for sensing diverse range tactile signals.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Highly sensitive flexible tactile sensors are of continuing interest for various applications including wearable devices, human- machine interface, and internet of things. Current technologies for high sensitivity piezoresistive sensors rely on costly materials and/or fabrication methods such as graphene-based and micro-structured composites limiting accessibility and scalability. Here, we report a facile sacrificial casting-etching method to synthesize nanoporous carbon nanotube/polymer composites for ultra-sensitive and low-cost piezoresistive pressure sensors. Our synthesis method overcomes the limitations of traditional solution-dip-coating method for adhering nanoscale conductive materials to the nanoscale porous surface. Importantly, we show ultra-high sensitivity with a strain gauge factor over 300, which is ~50 times higher than that of traditional CNT-based piezoresistive sensors and ~10 times higher than most of graphene-based ones. For practical tactile sensing applications, we demonstrate that the sensors can detect both gentle pressures (1 Pa-1 kPa) and low-pressure (1 kPa-25 kPa) with a fraction of cost. Our nanoporous polymer composite could contribute to expanding the scope of using nanocomposites for applications including subtle locomotion sensing, interactive human-machine interface systems, and internet of things from its easy tunability for sensing diverse range tactile signals.
Note: Send e-mail to Prof. Kang at [email protected] if you need a pdf file of the papers below.
2019
Li, Jing; Orrego, Santiago; Pan, Junjie; He, Peisheng; Kang, Sung Hoon
Ultrasensitive, flexible, and low-cost nanoporous piezoresistive composite for tactile pressure sensing Journal Article
In: Nanoscale, vol. 11, pp. 2779-2786, 2019.
Abstract | Links | BibTeX | Tags: composite, porous, pressure, Sensor, soft, stretchable electronics
@article{Li2019,
title = {Ultrasensitive, flexible, and low-cost nanoporous piezoresistive composite for tactile pressure sensing},
author = {Jing Li and Santiago Orrego and Junjie Pan and Peisheng He and Sung Hoon Kang},
url = {https://pubs.rsc.org/en/content/articlepdf/2014/NR/C8NR09959F?page=search},
doi = {10.1039/C8NR09959F.},
year = {2019},
date = {2019-01-02},
journal = {Nanoscale},
volume = {11},
pages = {2779-2786},
abstract = {Highly sensitive flexible tactile sensors are of continuing interest for various applications including wearable devices, human- machine interface, and internet of things. Current technologies for high sensitivity piezoresistive sensors rely on costly materials and/or fabrication methods such as graphene-based and micro-structured composites limiting accessibility and scalability. Here, we report a facile sacrificial casting-etching method to synthesize nanoporous carbon nanotube/polymer composites for ultra-sensitive and low-cost piezoresistive pressure sensors. Our synthesis method overcomes the limitations of traditional solution-dip-coating method for adhering nanoscale conductive materials to the nanoscale porous surface. Importantly, we show ultra-high sensitivity with a strain gauge factor over 300, which is ~50 times higher than that of traditional CNT-based piezoresistive sensors and ~10 times higher than most of graphene-based ones. For practical tactile sensing applications, we demonstrate that the sensors can detect both gentle pressures (1 Pa-1 kPa) and low-pressure (1 kPa-25 kPa) with a fraction of cost. Our nanoporous polymer composite could contribute to expanding the scope of using nanocomposites for applications including subtle locomotion sensing, interactive human-machine interface systems, and internet of things from its easy tunability for sensing diverse range tactile signals.},
keywords = {composite, porous, pressure, Sensor, soft, stretchable electronics},
pubstate = {published},
tppubtype = {article}
}
Highly sensitive flexible tactile sensors are of continuing interest for various applications including wearable devices, human- machine interface, and internet of things. Current technologies for high sensitivity piezoresistive sensors rely on costly materials and/or fabrication methods such as graphene-based and micro-structured composites limiting accessibility and scalability. Here, we report a facile sacrificial casting-etching method to synthesize nanoporous carbon nanotube/polymer composites for ultra-sensitive and low-cost piezoresistive pressure sensors. Our synthesis method overcomes the limitations of traditional solution-dip-coating method for adhering nanoscale conductive materials to the nanoscale porous surface. Importantly, we show ultra-high sensitivity with a strain gauge factor over 300, which is ~50 times higher than that of traditional CNT-based piezoresistive sensors and ~10 times higher than most of graphene-based ones. For practical tactile sensing applications, we demonstrate that the sensors can detect both gentle pressures (1 Pa-1 kPa) and low-pressure (1 kPa-25 kPa) with a fraction of cost. Our nanoporous polymer composite could contribute to expanding the scope of using nanocomposites for applications including subtle locomotion sensing, interactive human-machine interface systems, and internet of things from its easy tunability for sensing diverse range tactile signals.