Deformable Bioelectronics Based on Functional Micro/nanomaterials, Volume II

A special issue of Micromachines (ISSN 2072-666X).

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 4324

Special Issue Editor


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Guest Editor
Sungkyunkwan University, Suwon 16419, Korea
Interests: stretchable electronics; self-healing electronics; peripheral neural interface; functional nanomaterials; bio-integrated electronic system
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Deformable bioelectronics based on functional micro/nanomaterials, the topic of this Special Issue, have attracted huge attention owing to their tremendous potential in wearable and implantable applications. Specifically, high-performance functional micro/nanomaterials are able to allow the deformable electronics to be more feasible in next-generation healthcare and medicine due to their exceptional biocompatibility, flexibility, and even bioresorbability while maintaining high electrical performances. Therefore, the multifunctional deformable electronics integrated with such superior micro/nanomaterials have been expected to be comparable to conventional material-driven devices in the near future. An approach to the realization of the wearable/implantable bioelectronics can be divided into several methods: i) Using intrinsically flexible/stretchable/biocompatible conducting and semiconducting micro/nanocomposites, ii) enabling the rigid inorganic micro/nanomembranes to be deformable using the serpentine interconnect and neutral mechanical plane, iii) integrating commercial electronic chips, non-volatile memory modules, batteries, and wireless/power communication parts into flexible or transient substrates. In this Special Issue, we will cover various methodologies related to flexible/stretchable and bioresorbable micro/nanomaterial-based wearable and implantable bioelectronics. We invite researchers who are working on deformable materials and devices, ranging from biocompatible functional material synthesis and its device fabrication to process and system integration, to submit their high-quality manuscript for publication in this Special Issue.

Dr. Donghee Son
Guest Editor

Manuscript Submission Information

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Keywords

  • Flexible electronics
  • Stretchable electronics
  • Transient electronics
  • Functional nanomaterials
  • MEMS
  • Bio-integrated electronic systems
  • Wireless communication
  • Human–machine interface
  • Bioresorbable materials
  • Biocompatibility
  • Neural interface
  • Brain
  • Spinal cord
  • Optogenetics

Published Papers (1 paper)

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Research

11 pages, 2713 KiB  
Article
A Soft Pressure Sensor Array Based on a Conducting Nanomembrane
by Daekwang Jung, Kyumin Kang, Hyunjin Jung, Duhwan Seong, Soojung An, Jiyong Yoon, Wooseok Kim, Mikyung Shin, Hyoung Won Baac, Sangmin Won, Changhwan Shin and Donghee Son
Micromachines 2021, 12(8), 933; https://doi.org/10.3390/mi12080933 - 6 Aug 2021
Cited by 4 | Viewed by 3728
Abstract
Although skin-like pressure sensors exhibit high sensitivity with a high performance over a wide area, they have limitations owing to the critical issue of being linear only in a narrow strain range. Various strategies have been proposed to improve the performance of soft [...] Read more.
Although skin-like pressure sensors exhibit high sensitivity with a high performance over a wide area, they have limitations owing to the critical issue of being linear only in a narrow strain range. Various strategies have been proposed to improve the performance of soft pressure sensors, but such a nonlinearity issue still exists and the sensors are only effective within a very narrow strain range. Herein, we fabricated a highly sensitive multi-channel pressure sensor array by using a simple thermal evaporation process of conducting nanomembranes onto a stretchable substrate. A rigid-island structure capable of dissipating accumulated strain energy induced by external mechanical stimuli was adopted for the sensor. The performance of the sensor was precisely controlled by optimizing the thickness of the stretchable substrate and the number of serpentines of an Au membrane. The fabricated sensor exhibited a sensitivity of 0.675 kPa−1 in the broad pressure range of 2.3–50 kPa with linearity (~0.990), and good stability (>300 Cycles). Finally, we successfully demonstrated a mapping of pressure distribution. Full article
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