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Advanced Flexible/Stretchable Electronics: Materials, Technologies and (Bio)-Sensing Application

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Biosensors".

Deadline for manuscript submissions: 15 October 2024 | Viewed by 1636

Special Issue Editors


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Guest Editor
Akronic P.C., Agia Paraskevi, 15341 Athens, Greece
Interests: CMOS analogue integrated; circuits flexible/stretchable electronics; (bio)-sensors; bioimpedance raman spectroscopy

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Guest Editor
Department of Electrical and Electronic Engineering, Imperial College London, Bessemer Building, London SW7 2AZ, UK
Interests: SERS biosensing; nanomedicine; targeted drug delivery; regenerative medicine; cell-matter interaction; femtosecond laser

Special Issue Information

Dear Colleagues,

Recent advances in microfabrication, additive fabrication, microelectronics, and sensors are enabling new classes of devices and applications in the fields of biomedical sensors and in industrial applications. Application-specific integrated circuit (ASIC) systems on chip (SoC) for sensor interrogation and on-node signal processing, advanced computation methods, analog signal processing, data classification and fusion, as well as in-memory computing allow ultra-low power consumption and miniaturization, necessary for IoT, wearable, and implantable devices. Advanced sensors that are flexible and stretchable allow the seamless integration of sensors into the daily routines of users, enabling greater pervasiveness and improved quality of recorded data. Transiency is ideal for implantable devices that can be assimilated once they are no longer needed. Such sensing systems can be dc to medium-frequency electrical sensors (electrochemical, electrophysiological, bioimpedance, gas sensors, physical sensors, etc.) or high-frequency (radar) or optical-based approaches (e.g., photoplethysmography). Issues with sensitivity, selectivity, biocompatibility, packaging, ASIC integration, sensor modelling (especially with regard to mechanical perturbations), sensing modalities, and the co-integration of many types of sensors using different modalities for multi-parametric/multi-modal sensing are of interest to this Special Issue.

Dr. Panagiotis Kassanos
Dr. Meysam Keshavarz
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • wearable sensors
  • stretchable sensors
  • flexible sensors
  • physiological monitoring
  • multiparametric sensing
  • bioimpedance
  • electrochemical sensors
  • sweat analysis
  • implantable devices
  • transient sensors
  • hydrogels
  • composites
  • additive manufacturing
  • microelectronics
  • microfabrication
  • thin-film devices
  • IoT

Published Papers (1 paper)

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Research

12 pages, 3235 KiB  
Article
Breathable and Stretchable Organic Electrochemical Transistors with Laminated Porous Structures for Glucose Sensing
by Haihong Guo, Changjian Liu, Yujie Peng, Lin Gao and Junsheng Yu
Sensors 2023, 23(15), 6910; https://doi.org/10.3390/s23156910 - 03 Aug 2023
Viewed by 1342
Abstract
Dynamic glucose monitoring is important to reduce the risk of metabolic diseases such as diabetes. Wearable biosensors based on organic electrochemical transistors (OECTs) have been developed due to their excellent signal amplification capabilities and biocompatibility. However, traditional wearable biosensors are fabricated on flat [...] Read more.
Dynamic glucose monitoring is important to reduce the risk of metabolic diseases such as diabetes. Wearable biosensors based on organic electrochemical transistors (OECTs) have been developed due to their excellent signal amplification capabilities and biocompatibility. However, traditional wearable biosensors are fabricated on flat substrates with limited gas permeability, resulting in the inefficient evaporation of sweat, reduced wear comfort, and increased risk of inflammation. Here, we proposed breathable OECT-based glucose sensors by designing a porous structure to realize optimal breathable and stretchable properties. The gas permeability of the device and the relationship between electrical properties under different tensile strains were carefully investigated. The OECTs exhibit exceptional electrical properties (gm ~1.51 mS and Ion ~0.37 mA) and can retain up to about 44% of their initial performance even at 30% stretching. Furthermore, obvious responses to glucose have been demonstrated in a wide range of concentrations (10−7–10−4 M) even under 30% strain, where the normalized response to 10−4 M is 26% and 21% for the pristine sensor and under 30% strain, respectively. This work offers a new strategy for developing advanced breathable and wearable bioelectronics. Full article
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