Photopatternable and moisture-stable PEDOT:PSS/PEG hybrid thin-film for flexible and wearable humidity sensing

Zijie Zhu; Ruya Li; Tingrui Pan

doi:10.1109/NEMS.2017.8017033

Photopatternable and moisture-stable PEDOT:PSS/PEG hybrid thin-film for flexible and wearable humidity sensing

Zijie Zhu, Ruya Li, Tingrui Pan

Biomedical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Degradation and delamination have been technically challenging for poly(3,4-ethylenedioxythiophene): polystyrene sulfonate) (PEDOT:PSS) thin-film processing due to environmental humidity. To overcome this problem, we introduced a one-step photolithographic method to both pattern and link a PEDOT:PSS film onto a PEG layer as a hybrid thin-film structure on a flexible substrate, which exhibited excellent long-Term moisture stability (10 days) and high lithographic resolution (2 urn). Mechanical characterizations (bending and tensile tests) illustrated strong adhesions between the PEDOT:PSS and PEG layers as well as between the hybrid thin-film and substrate. Moreover, the hybrid moisture-Absorbable film showed a quick response of its permittivity to environmental humidity variations, in which patterned PEDOT:PSS layer served as an electrode and the PEG layer as a moisture sensing element. As demonstrations, perspiration tracking over various parts of the body surface as well as breath rate measurement were successfully carried out, which illustrated the potential utility of this stable hybrid thin-film for emerging flexible and wearable humidity sensing applications.

Original language	English (US)
Title of host publication	2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	318-322
Number of pages	5
ISBN (Electronic)	9781509030590
DOIs	https://doi.org/10.1109/NEMS.2017.8017033
State	Published - Aug 25 2017
Event	12th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017 - Los Angeles, United States Duration: Apr 9 2017 → Apr 12 2017

Other

Other	12th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017
Country/Territory	United States
City	Los Angeles
Period	4/9/17 → 4/12/17

Keywords

breath rate measurement
humidity sensor
hybrid thin-film
moisture stability
one-step photopatterning
PEDOT:PSS
perspiration tracking

ASJC Scopus subject areas

Electrical and Electronic Engineering
Mechanical Engineering
Electronic, Optical and Magnetic Materials
Instrumentation

Access to Document

10.1109/NEMS.2017.8017033

Cite this

Zhu, Z., Li, R., & Pan, T. (2017). Photopatternable and moisture-stable PEDOT:PSS/PEG hybrid thin-film for flexible and wearable humidity sensing. In 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017 (pp. 318-322). [8017033] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NEMS.2017.8017033

Photopatternable and moisture-stable PEDOT:PSS/PEG hybrid thin-film for flexible and wearable humidity sensing. / Zhu, Zijie; Li, Ruya; Pan, Tingrui.

2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 318-322 8017033.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zhu, Z, Li, R & Pan, T 2017, Photopatternable and moisture-stable PEDOT:PSS/PEG hybrid thin-film for flexible and wearable humidity sensing. in 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017., 8017033, Institute of Electrical and Electronics Engineers Inc., pp. 318-322, 12th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017, Los Angeles, United States, 4/9/17. https://doi.org/10.1109/NEMS.2017.8017033

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abstract = "Degradation and delamination have been technically challenging for poly(3,4-ethylenedioxythiophene): polystyrene sulfonate) (PEDOT:PSS) thin-film processing due to environmental humidity. To overcome this problem, we introduced a one-step photolithographic method to both pattern and link a PEDOT:PSS film onto a PEG layer as a hybrid thin-film structure on a flexible substrate, which exhibited excellent long-Term moisture stability (10 days) and high lithographic resolution (2 urn). Mechanical characterizations (bending and tensile tests) illustrated strong adhesions between the PEDOT:PSS and PEG layers as well as between the hybrid thin-film and substrate. Moreover, the hybrid moisture-Absorbable film showed a quick response of its permittivity to environmental humidity variations, in which patterned PEDOT:PSS layer served as an electrode and the PEG layer as a moisture sensing element. As demonstrations, perspiration tracking over various parts of the body surface as well as breath rate measurement were successfully carried out, which illustrated the potential utility of this stable hybrid thin-film for emerging flexible and wearable humidity sensing applications.",

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AB - Degradation and delamination have been technically challenging for poly(3,4-ethylenedioxythiophene): polystyrene sulfonate) (PEDOT:PSS) thin-film processing due to environmental humidity. To overcome this problem, we introduced a one-step photolithographic method to both pattern and link a PEDOT:PSS film onto a PEG layer as a hybrid thin-film structure on a flexible substrate, which exhibited excellent long-Term moisture stability (10 days) and high lithographic resolution (2 urn). Mechanical characterizations (bending and tensile tests) illustrated strong adhesions between the PEDOT:PSS and PEG layers as well as between the hybrid thin-film and substrate. Moreover, the hybrid moisture-Absorbable film showed a quick response of its permittivity to environmental humidity variations, in which patterned PEDOT:PSS layer served as an electrode and the PEG layer as a moisture sensing element. As demonstrations, perspiration tracking over various parts of the body surface as well as breath rate measurement were successfully carried out, which illustrated the potential utility of this stable hybrid thin-film for emerging flexible and wearable humidity sensing applications.

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Photopatternable and moisture-stable PEDOT:PSS/PEG hybrid thin-film for flexible and wearable humidity sensing

Abstract

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Keywords

ASJC Scopus subject areas

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