Biodegradable, flexible silicon nanomembrane-based NOx gas sensor system with record-high performance for transient environmental monitors and medical implants

Gwan Jin Ko; Soo Deok Han; Jeong Ki Kim; Jia Zhu; Won Bae Han; Jinmook Chung; Seung Min Yang; Huanyu Cheng; Dong Hwee Kim; Chong Yun Kang; Suk Won Hwang

doi:10.1038/s41427-020-00253-0

Biodegradable, flexible silicon nanomembrane-based NO_x gas sensor system with record-high performance for transient environmental monitors and medical implants

Gwan Jin Ko, Soo Deok Han, Jeong Ki Kim, Jia Zhu, Won Bae Han, Jinmook Chung, Seung Min Yang, Huanyu Cheng, Dong Hwee Kim, Chong Yun Kang, Suk Won Hwang

KU-KIST Graduate School of Converging Science and Technology

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

A novel transient electronics technology that is capable of completely dissolving or decomposing in certain conditions after a period of operation offers unprecedented opportunities for medical implants, environmental sensors, and other applications. Here, we describe a biodegradable, flexible silicon-based electronic system that detects NO species with a record-breaking sensitivity of 136 Rs (5 ppm, NO₂) and 100-fold selectivity for NO species over other substances with a fast response (~30 s) and recovery (~60 s). The exceptional features primarily depend on not only materials, dimensions, and design layouts but also temperatures and electrical operations. Large-scale sensor arrays in a mechanically pliable configuration exhibit negligible deterioration in performance under various modes of applied loads, consistent with mechanics modeling. In vitro evaluations demonstrate the capability and stability of integrated NO_x devices in severe wet environments for biomedical applications.

Original language	English
Article number	71
Journal	NPG Asia Materials
Volume	12
Issue number	1
DOIs	https://doi.org/10.1038/s41427-020-00253-0
Publication status	Published - 2020 Dec 1

Bibliographical note

Funding Information:
This work was supported by a Korea University grant; KU-KIST Graduate School of Converging Science and Technology Program, the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT & Future Planning (MSIP) (grant NRF-2017R1E1A1A01075027); and the Technology Innovation Program (20002974, Development of biosensing function antibiosis wound dressing and instrument for the treatment) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea). Computations for this research were performed on the Pennsylvania State University’s Institute for Computational and Data Sciences’ Roar supercomputer. J.Z. and H.C. also acknowledge support from the Doctoral New Investigator grant from the American Chemical Society Petroleum Research Fund (59021-DNI7) and National Science Foundation (ECCS-1933072). J.Z. also acknowledge the Leighton Riess Graduate Fellowship and the Diefenderfer Graduate Fellowship from the College of Engineering at Penn State university.

Publisher Copyright:
© 2020, The Author(s).

ASJC Scopus subject areas

Modelling and Simulation
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1038/s41427-020-00253-0

Cite this

Ko, G. J., Han, S. D., Kim, J. K., Zhu, J., Han, W. B., Chung, J., Yang, S. M., Cheng, H., Kim, D. H., Kang, C. Y., & Hwang, S. W. (2020). Biodegradable, flexible silicon nanomembrane-based NO_x gas sensor system with record-high performance for transient environmental monitors and medical implants. NPG Asia Materials, 12(1), Article 71. https://doi.org/10.1038/s41427-020-00253-0

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abstract = "A novel transient electronics technology that is capable of completely dissolving or decomposing in certain conditions after a period of operation offers unprecedented opportunities for medical implants, environmental sensors, and other applications. Here, we describe a biodegradable, flexible silicon-based electronic system that detects NO species with a record-breaking sensitivity of 136 Rs (5 ppm, NO2) and 100-fold selectivity for NO species over other substances with a fast response (~30 s) and recovery (~60 s). The exceptional features primarily depend on not only materials, dimensions, and design layouts but also temperatures and electrical operations. Large-scale sensor arrays in a mechanically pliable configuration exhibit negligible deterioration in performance under various modes of applied loads, consistent with mechanics modeling. In vitro evaluations demonstrate the capability and stability of integrated NOx devices in severe wet environments for biomedical applications.",

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