Micro-Nano Technology in Intelligent Flexible Electronics: Design, Fabrication and Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D:Materials and Processing".

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 2944

Special Issue Editors


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Guest Editor
School of Aerospace Engineering and Applied Mechanics, Tongji Univerisity, Shanghai 200092, China
Interests: intelligent sense; functional and smart composites; micro/nano-device mechanics; soft electronics; intelligent manufacturing
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Materials Science and Engineering, National University of Singapore, Singapore 119077, Singapore
Interests: flexible electronics; electronic skin for health monitoring, pressure sensing, and materials perception; sensors with new mechanisms
Institute of Flexible Electronics Technology of Tsinghua, Jiaxing 314006, China
Interests: flexible electronics; smart materials and structures; 3D buckling structures; piezoelectric devices;flexible chip and packaging

Special Issue Information

Dear Colleagues,

Research in flexible electronics has rapidly heated up in recent years, and some of its applications have entered our daily life, especially in the field of health monitoring and robotics. Traditionally, flexible electronics focus on how to implement circuits and electronic devices based on flexible or stretchable materials. For instance, electronic skin (E-skin), a sensory system that mimics the perception function of human skin, usually integrates flexible or stretchable sensor devices with sensing functions such as pressure, strain, temperature, vibration, etc. Micro and nano technologies are applied extensively in the design, fabrication, and application of E-skin devices. As a general example, in flexible pressure sensors for E-skin, researchers have introduced many natural or carefully designed micro- and nanostructures to effectively make the apparent Young's modulus of the active material layer much lower than it is in its solid form, thereby improving sensitivity. Additionally, the hysteresis can be suppressed through proper microstructure design, thus improving the accuracy of the sensor. Today, flexible electronics has reached a new stage where we cannot be satisfied with merely pursuing a single device in terms of performance breakthroughs and the capture or transmission of raw, unprocessed data. The emerging research on AR/VR, human–machine interfaces, bionic prostheses, and humanoid robots puts forward more intelligent demands on flexible electronic devices, and the combination of flexible electronics and artificial intelligence (AI) technology will become a new research trend. For instance, wireless wearable flexible devices with AI technology that can be used to intelligently monitor the symptoms of COVID-19 have been reported. Correspondingly, the application of micro/nano technology in such intelligent flexible electronics has also been further developed. Here, this Special Issue seeks to showcase research papers and review articles that focus on the topic of Micro/Nano Technology in Intelligent Flexible Electronics: Design, Fabrication, and Application.

We look forward to receiving your submissions! 

Dr. Weidong Yang
Dr. Wen Cheng
Dr. Haibo Li
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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Keywords

  • intelligent sense
  • flexible electronics
  • functional and smart materials
  • nanocomposites
  • structure design
  • sensors
  • electronic skin
  • micro/nano-fabrication
  • 3D/4D printing
  • surface/interface
  • microstructure
  • electromechanical coupling property
  • buckling and postbuckling
  • flexible chip and packaging
  • healthcare monitoring

Published Papers (1 paper)

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Research

12 pages, 5564 KiB  
Article
Flexible Neural Probes with Optical Artifact-Suppressing Modification and Biofriendly Polypeptide Coating
by Minghao Wang, Ye Fan, Lili Li, Fei Wen, Bangbang Guo, Minyi Jin, Jiahui Xu, Yuhao Zhou, Xiaoyang Kang, Bowen Ji, Yuhua Cheng and Gaofeng Wang
Micromachines 2022, 13(2), 199; https://doi.org/10.3390/mi13020199 - 27 Jan 2022
Cited by 4 | Viewed by 2277
Abstract
The advent of optogenetics provides a well-targeted tool to manipulate neurons because of its high time resolution and cell-type specificity. Recently, closed-loop neural manipulation techniques consisting of optical stimulation and electrical recording have been widely used. However, metal microelectrodes exposed to light radiation [...] Read more.
The advent of optogenetics provides a well-targeted tool to manipulate neurons because of its high time resolution and cell-type specificity. Recently, closed-loop neural manipulation techniques consisting of optical stimulation and electrical recording have been widely used. However, metal microelectrodes exposed to light radiation could generate photoelectric noise, thus causing loss or distortion of neural signal in recording channels. Meanwhile, the biocompatibility of neural probes remains to be improved. Here, five kinds of neural interface materials are deposited on flexible polyimide-based neural probes and illuminated with a series of blue laser pulses to study their electrochemical performance and photoelectric noises for single-unit recording. The results show that the modifications can not only improve the electrochemical performance, but can also reduce the photoelectric artifacts. In particular, the double-layer composite consisting of platinum-black and conductive polymer has the best comprehensive performance. Thus, a layer of polypeptide is deposited on the entire surface of the double-layer modified neural probes to further improve their biocompatibility. The results show that the biocompatible polypeptide coating has little effect on the electrochemical performance of the neural probe, and it may serve as a drug carrier due to its special micromorphology. Full article
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