Long-lived, transferred crystalline silicon carbide nanomembranes for implantable flexible electronics
Article
Article Title | Long-lived, transferred crystalline silicon carbide nanomembranes for implantable flexible electronics |
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ERA Journal ID | 35029 |
Article Category | Article |
Authors | Phan, Hoang-Phuong (Author), Zhong, Yishan (Author), Nguyen, Tuan-Khoa (Author), Park, Yoonseok (Author), Dinh, Toan (Author), Song, Enming (Author), Vadivelu, Raja Kumar (Author), Masud, Mostafa Kamal (Author), Li, Jinghua (Author), Shiddiky, Muhammad J. A. (Author), Dao, Dzung (Author), Yamauchi, Yusuke (Author), Rogers, John A. (Author) and Nguyen, Nam-Trung (Author) |
Journal Title | ACS Nano |
Journal Citation | 13 (10), pp. 11572-11581 |
Number of Pages | 10 |
Year | 2019 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1936-0851 |
1936-086X | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/acsnano.9b05168 |
Web Address (URL) | https://pubs.acs.org/doi/abs/10.1021/acsnano.9b05168 |
Abstract | Implantable electronics are of great interest owing to their capability for real-time and continuous recording of cellular–electrical activity. Nevertheless, as such systems involve direct interfaces with surrounding biofluidic environments, maintaining their long-term sustainable operation, without leakage currents or corrosion, is a daunting challenge. Herein, we present a thin, flexible semiconducting material system that offers attractive attributes in this context. The material consists of crystalline cubic silicon carbide nanomembranes grown on silicon wafers, released and then physically transferred to a final device substrate (e.g., polyimide). The experimental results demonstrate that SiC nanomembranes with thicknesses of 230 nm do not experience the hydrolysis process (i.e., the etching rate is 0 nm/day at 96 °C in phosphate-buffered saline (PBS)). There is no observable water permeability for at least 60 days in PBS at 96 °C and non-Na+ ion diffusion detected at a thickness of 50 nm after being soaked in 1× PBS for 12 days. These properties enable Faradaic interfaces between active electronics and biological tissues, as well as multimodal sensing of temperature, strain, and other properties without the need for additional encapsulating layers. These findings create important opportunities for use of flexible, wide band gap materials as essential components of long-lived neurological and cardiac electrophysiological device interfaces. |
Keywords | implantable electronics; flexible electronics; silicon carbide; long-lived operation; neuro-electrophysiology; multifunctional sensing |
ANZSRC Field of Research 2020 | 401699. Materials engineering not elsewhere classified |
510401. Condensed matter characterisation technique development | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Griffith University |
University of Illinois, United States | |
Northwestern University, United States | |
University of Queensland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5890/long-lived-transferred-crystalline-silicon-carbide-nanomembranes-for-implantable-flexible-electronics
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