Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications
Porous polymeric foams as dielectric layer for highly sensitive capacitive based pressure sensors have been extensively explored owing to their excellent flexibility and elasticity. Despite intensive efforts, most of previously reported porous polymer foams still suffer from difficulty in further lo...
| Main Authors: | , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/138867 |
| _version_ | 1811679475977420800 |
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| author | Tay, Roland Yingjie Li, Hongling Lin, Jinjun Wang, Hong Lim, Jacob Song Kiat Chen, Shuai Leong, Wei Lin Tsang, Siu Hon Teo, Edwin Hang Tong |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Tay, Roland Yingjie Li, Hongling Lin, Jinjun Wang, Hong Lim, Jacob Song Kiat Chen, Shuai Leong, Wei Lin Tsang, Siu Hon Teo, Edwin Hang Tong |
| author_sort | Tay, Roland Yingjie |
| collection | NTU |
| description | Porous polymeric foams as dielectric layer for highly sensitive capacitive based pressure sensors have been extensively explored owing to their excellent flexibility and elasticity. Despite intensive efforts, most of previously reported porous polymer foams still suffer from difficulty in further lowering the attainable density limit of ≈0.1 g cm−3 while retaining high sensitivity and compressibility due to the limitations on existing fabrication techniques and materials. Herein, utilizing 3D interconnected networks of few‐layer hexagonal boron nitride foams (h‐BNFs) as supporting frameworks, lightweight and highly porous BN/polydimethylsiloxane composite foams (BNF@PDMS) with densities reaching as low as 15 mg cm−3 and permittivity close to that of air are fabricated. This is the lightest PDMS‐based foam reported to date. Owing to the synergistic effects between BN and PDMS, these lightweight composite foams possess excellent mechanical resilience, extremely high compressibility (up to 95% strain), good cyclic performance, and superelasticity. Being electrically nonconductive, the potential application of BNF@PDMS as a dielectric layer for capacitive sensors is further demonstrated. Remarkably, the as‐fabricated device can perform multiple sensing functions such as noncontact touch sensor, environmental monitoring sensor, and high sensitivity pressure sensor that can detect extremely low pressures of below 1 Pa. |
| first_indexed | 2024-10-01T03:09:45Z |
| format | Journal Article |
| id | ntu-10356/138867 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:09:45Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1388672021-01-21T08:30:31Z Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications Tay, Roland Yingjie Li, Hongling Lin, Jinjun Wang, Hong Lim, Jacob Song Kiat Chen, Shuai Leong, Wei Lin Tsang, Siu Hon Teo, Edwin Hang Tong School of Electrical and Electronic Engineering School of Materials Science and Engineering Temasek Laboratories Engineering::Electrical and electronic engineering Engineering::Materials Boron Nitride Lightweight Porous polymeric foams as dielectric layer for highly sensitive capacitive based pressure sensors have been extensively explored owing to their excellent flexibility and elasticity. Despite intensive efforts, most of previously reported porous polymer foams still suffer from difficulty in further lowering the attainable density limit of ≈0.1 g cm−3 while retaining high sensitivity and compressibility due to the limitations on existing fabrication techniques and materials. Herein, utilizing 3D interconnected networks of few‐layer hexagonal boron nitride foams (h‐BNFs) as supporting frameworks, lightweight and highly porous BN/polydimethylsiloxane composite foams (BNF@PDMS) with densities reaching as low as 15 mg cm−3 and permittivity close to that of air are fabricated. This is the lightest PDMS‐based foam reported to date. Owing to the synergistic effects between BN and PDMS, these lightweight composite foams possess excellent mechanical resilience, extremely high compressibility (up to 95% strain), good cyclic performance, and superelasticity. Being electrically nonconductive, the potential application of BNF@PDMS as a dielectric layer for capacitive sensors is further demonstrated. Remarkably, the as‐fabricated device can perform multiple sensing functions such as noncontact touch sensor, environmental monitoring sensor, and high sensitivity pressure sensor that can detect extremely low pressures of below 1 Pa. Accepted version 2020-05-13T07:19:36Z 2020-05-13T07:19:36Z 2020 Journal Article Tay, R. Y., Li, H., Lin, J., Wang, H., Lim, J. S. K., Chen, S., . . . Teo, E. H. T. (2020). Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications. Advanced Functional Materials, 30(10), 1909604-. doi:10.1002/adfm.201909604 1616-301X https://hdl.handle.net/10356/138867 10.1002/adfm.201909604 10 30 en Advanced Functional Materials This is the peer reviewed version of the following article: Tay, R. Y., Li, H., Lin, J., Wang, H., Lim, J. S. K., Chen, S., . . . Teo, E. H. T. (2020). Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications. Advanced Functional Materials, 30(10), 1909604-. doi:10.1002/adfm.201909604, which has been published in final form at 10.1002/adfm.201909604. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Engineering::Materials Boron Nitride Lightweight Tay, Roland Yingjie Li, Hongling Lin, Jinjun Wang, Hong Lim, Jacob Song Kiat Chen, Shuai Leong, Wei Lin Tsang, Siu Hon Teo, Edwin Hang Tong Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications |
| title | Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications |
| title_full | Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications |
| title_fullStr | Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications |
| title_full_unstemmed | Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications |
| title_short | Lightweight, superelastic boron nitride/polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications |
| title_sort | lightweight superelastic boron nitride polydimethylsiloxane foam as air dielectric substitute for multifunctional capacitive sensor applications |
| topic | Engineering::Electrical and electronic engineering Engineering::Materials Boron Nitride Lightweight |
| url | https://hdl.handle.net/10356/138867 |
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