Fully Degradable Memristors and Humidity Sensors Based on a Tyrosine-Rich Peptide

Min Kyu Song, Seok Daniel Namgung, Young Woong Song, Taehoon Sung, Wonjae Ji, Yoon Sik Lee, Ki Tae Nam, Jang Yeon Kwon

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Transient electronics, a form of electronic devices that disappear physically after a certain operation time, have attracted considerable interest in the area of bioelectronics. Due to their biodegradability and biocompatibility, bioderived materials have been applied to various kinds of transient electronics. This work presents fully degradable memristors and humidity sensors based on a tyrosine-rich peptide. The memristors exhibit a high on/off ratio (>106), stable endurance (â 104 s), and analog switching behavior. The humidity sensors show high sensitivity, in which the current changes by 3 orders of magnitude in the relative humidity range of 10-90%. By means of a rapid response and recovery time, the sensors can be used to monitor human respiration in real time. These devices are rapidly dissolvable under physiological conditions within 1 min. These results open up the field of biocompatible multifunctional nanoelectronics toward the development of bio-implantable processors and sensors.

Original languageEnglish
Pages (from-to)3372-3378
Number of pages7
JournalACS Applied Electronic Materials
Issue number8
Publication statusPublished - 2021 Aug 24

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2C2004864) and by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant No. 2020R1A6A3A1307657511).

Publisher Copyright:
© 2021 ACS Applied Electronic Materials. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrochemistry
  • Materials Chemistry


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