Publication

Ultralightweight and 3D Squeezable Graphene-Polydimethylsiloxane Composite Foams as Piezoresistive Sensors

Sengupta, D., Pei, Y. & Kottapalli, A. G. P., 25-Sep-2019, In : ACS Applied Materials & Interfaces. 11, 38, p. 35201-35211 11 p., 9b11776.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Sengupta, D., Pei, Y., & Kottapalli, A. G. P. (2019). Ultralightweight and 3D Squeezable Graphene-Polydimethylsiloxane Composite Foams as Piezoresistive Sensors. ACS Applied Materials & Interfaces, 11(38), 35201-35211. [9b11776]. https://doi.org/10.1021/acsami.9b11776

Author

Sengupta, Debarun ; Pei, Yutao ; Kottapalli, Ajay Giri Prakash. / Ultralightweight and 3D Squeezable Graphene-Polydimethylsiloxane Composite Foams as Piezoresistive Sensors. In: ACS Applied Materials & Interfaces. 2019 ; Vol. 11, No. 38. pp. 35201-35211.

Harvard

Sengupta, D, Pei, Y & Kottapalli, AGP 2019, 'Ultralightweight and 3D Squeezable Graphene-Polydimethylsiloxane Composite Foams as Piezoresistive Sensors', ACS Applied Materials & Interfaces, vol. 11, no. 38, 9b11776, pp. 35201-35211. https://doi.org/10.1021/acsami.9b11776

Standard

Ultralightweight and 3D Squeezable Graphene-Polydimethylsiloxane Composite Foams as Piezoresistive Sensors. / Sengupta, Debarun; Pei, Yutao; Kottapalli, Ajay Giri Prakash.

In: ACS Applied Materials & Interfaces, Vol. 11, No. 38, 9b11776, 25.09.2019, p. 35201-35211.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Sengupta D, Pei Y, Kottapalli AGP. Ultralightweight and 3D Squeezable Graphene-Polydimethylsiloxane Composite Foams as Piezoresistive Sensors. ACS Applied Materials & Interfaces. 2019 Sep 25;11(38):35201-35211. 9b11776. https://doi.org/10.1021/acsami.9b11776


BibTeX

@article{4943383c7a844b9fa7f73d387934757d,
title = "Ultralightweight and 3D Squeezable Graphene-Polydimethylsiloxane Composite Foams as Piezoresistive Sensors",
abstract = "The growing demand for flexible, ultrasensitive, squeezable, skin-mountable and wearable sensors tailored to the requirements of personalized health care monitoring has fueled the necessity to explore novel nanomaterial-polymer composite-based sensors. Herein, we report a sensitive, 3D squeezable graphene-polydimethylsiloxane (PDMS) foam-based piezoresistive sensor realized by infusing multi-layered graphene nanoparticles into a sugar scaffolded porous PDMS foam structure. Static and dynamic compressive strain testing of the resulting piezoresistive foams sensors revealed two linear response regions with an average gauge factor of 2.87 ~ 8.77 over a strain range of 0-50 {\%}. Furthermore, the dynamic stimulus-response revealed the ability of the sensors to effectively track dynamic pressure up to a frequency of 70 Hz. In addition, the sensors displayed a high stability over 36000 cycles of cyclic compressive loading and 100 cycles of complete human gait motion. The 3D sensing foams were applied to experimentally demonstrate accurate human gait monitoring through both simulated gait models and real-time gait characterization experiments. The real-time gait experiments conducted demonstrate that the information of the pressure profile obtained at three locations in the shoe sole could not only differentiate between different kinds of human gait including walking and running, but also identify possible fall conditions. This work also demonstrates the capability of the sensors to differentiate between foot anatomies, such as a flat foot (low central arch) and a medium arch foot which is biomechanically more efficient. Furthermore, the sensors were able to sense various basic joint movement responses demonstrating their suitability for personalized healthcare applications.",
keywords = "multilayer graphene, piezoresistive sensor, squeezable sensor, flexible sensor, gait monitoring, STRAIN SENSORS, POLYURETHANE SPONGE, MECHANICAL ENERGY, NANOGENERATOR, LIGHTWEIGHT, PRESSURE, WALKING, SCALE, FILMS",
author = "Debarun Sengupta and Yutao Pei and Kottapalli, {Ajay Giri Prakash}",
year = "2019",
month = "9",
day = "25",
doi = "10.1021/acsami.9b11776",
language = "English",
volume = "11",
pages = "35201--35211",
journal = "ACS Applied Materials & Interfaces",
issn = "1944-8244",
publisher = "AMER CHEMICAL SOC",
number = "38",

}

RIS

TY - JOUR

T1 - Ultralightweight and 3D Squeezable Graphene-Polydimethylsiloxane Composite Foams as Piezoresistive Sensors

AU - Sengupta, Debarun

AU - Pei, Yutao

AU - Kottapalli, Ajay Giri Prakash

PY - 2019/9/25

Y1 - 2019/9/25

N2 - The growing demand for flexible, ultrasensitive, squeezable, skin-mountable and wearable sensors tailored to the requirements of personalized health care monitoring has fueled the necessity to explore novel nanomaterial-polymer composite-based sensors. Herein, we report a sensitive, 3D squeezable graphene-polydimethylsiloxane (PDMS) foam-based piezoresistive sensor realized by infusing multi-layered graphene nanoparticles into a sugar scaffolded porous PDMS foam structure. Static and dynamic compressive strain testing of the resulting piezoresistive foams sensors revealed two linear response regions with an average gauge factor of 2.87 ~ 8.77 over a strain range of 0-50 %. Furthermore, the dynamic stimulus-response revealed the ability of the sensors to effectively track dynamic pressure up to a frequency of 70 Hz. In addition, the sensors displayed a high stability over 36000 cycles of cyclic compressive loading and 100 cycles of complete human gait motion. The 3D sensing foams were applied to experimentally demonstrate accurate human gait monitoring through both simulated gait models and real-time gait characterization experiments. The real-time gait experiments conducted demonstrate that the information of the pressure profile obtained at three locations in the shoe sole could not only differentiate between different kinds of human gait including walking and running, but also identify possible fall conditions. This work also demonstrates the capability of the sensors to differentiate between foot anatomies, such as a flat foot (low central arch) and a medium arch foot which is biomechanically more efficient. Furthermore, the sensors were able to sense various basic joint movement responses demonstrating their suitability for personalized healthcare applications.

AB - The growing demand for flexible, ultrasensitive, squeezable, skin-mountable and wearable sensors tailored to the requirements of personalized health care monitoring has fueled the necessity to explore novel nanomaterial-polymer composite-based sensors. Herein, we report a sensitive, 3D squeezable graphene-polydimethylsiloxane (PDMS) foam-based piezoresistive sensor realized by infusing multi-layered graphene nanoparticles into a sugar scaffolded porous PDMS foam structure. Static and dynamic compressive strain testing of the resulting piezoresistive foams sensors revealed two linear response regions with an average gauge factor of 2.87 ~ 8.77 over a strain range of 0-50 %. Furthermore, the dynamic stimulus-response revealed the ability of the sensors to effectively track dynamic pressure up to a frequency of 70 Hz. In addition, the sensors displayed a high stability over 36000 cycles of cyclic compressive loading and 100 cycles of complete human gait motion. The 3D sensing foams were applied to experimentally demonstrate accurate human gait monitoring through both simulated gait models and real-time gait characterization experiments. The real-time gait experiments conducted demonstrate that the information of the pressure profile obtained at three locations in the shoe sole could not only differentiate between different kinds of human gait including walking and running, but also identify possible fall conditions. This work also demonstrates the capability of the sensors to differentiate between foot anatomies, such as a flat foot (low central arch) and a medium arch foot which is biomechanically more efficient. Furthermore, the sensors were able to sense various basic joint movement responses demonstrating their suitability for personalized healthcare applications.

KW - multilayer graphene

KW - piezoresistive sensor

KW - squeezable sensor

KW - flexible sensor

KW - gait monitoring

KW - STRAIN SENSORS

KW - POLYURETHANE SPONGE

KW - MECHANICAL ENERGY

KW - NANOGENERATOR

KW - LIGHTWEIGHT

KW - PRESSURE

KW - WALKING

KW - SCALE

KW - FILMS

U2 - 10.1021/acsami.9b11776

DO - 10.1021/acsami.9b11776

M3 - Article

VL - 11

SP - 35201

EP - 35211

JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

SN - 1944-8244

IS - 38

M1 - 9b11776

ER -

ID: 95174067