Bioelectronic Devices and Sensors: Novel Materials, Device Designs, and Fabrication Strategies

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "B:Biology and Biomedicine".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 1225

Special Issue Editor


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Guest Editor
Department of Aerospace Engineering and Engineering Mechanics, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712, USA
Interests: electronics; bioelectronic devices; wearable electronics; sensors and actuators; advanced materials; energy harvesting
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Special Issue Information

Dear Colleagues,

Bioelectronic devices are emerging as a highly interdisciplinary and disruptive technology achieving great attention from researchers all over the world including mechanical engineers, electrical engineers, bioengineers, materials scientists, and even clinicians because of their wide range of applications such as implantable electrophysiological sensors, wearable healthcare monitoring devices, brain-computer interfaces, therapeutic devices, and drug delivery systems. Different flexible/stretchable and biocompatible materials, cutting-edge device designs, and manufacturing methodologies have been developed to advance the functionalities and performance of those bioelectronic devices and sensors. These wearable bioelectronic devices include several components such as a sensor unit, processing unit, communication unit, and power supply unit. Increasing the integration of these devices to the human skin/body with more flexibility, stretchability, conformability, facile fabrication, and adaptive design could lead to long-term monitoring and diagnosis of health conditions using next-generation personal healthcare monitoring devices. This special issue welcomes all papers (original research papers and reviews) that deal with bioelectronic devices including but not limited to physiological, biosensors, and chemical sensors corresponding to 2D materials, conductive polymers, nanomaterials, 3D printing, robotics, prosthetics, e-tattoos, and e-skin. 

Dr. Pukar Maharjan
Guest Editor

Manuscript Submission Information

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Keywords

  • flexible electronics
  • stretchable electronics
  • bioelectronic devices
  • integrated electronics
  • wearable electronics
  • wearable sensors
  • biosensors
  • physiological sensors
  • chemical sensors
  • 2D materials
  • nanomaterials
  • E-tattoo
  • E-skin
  • skin electronics
  • self-powered sensors
  • biomedical devices
  • soft materials

Published Papers (1 paper)

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Research

16 pages, 3895 KiB  
Article
A 14-Bit, 12 V-to-100 V Voltage Compliance Electrical Stimulator with Redundant Digital Calibration
by Kangyu Su, Zhang Qiu and Jian Xu
Micromachines 2023, 14(11), 2001; https://doi.org/10.3390/mi14112001 - 28 Oct 2023
Viewed by 898
Abstract
Electrical stimulation is an important technique for modulating the functions of the nervous system through electrical stimulus. To implement a more competitive prototype that can tackle the domain-specific difficulties of existing electrical stimulators, three key techniques are proposed in this work. Firstly, a [...] Read more.
Electrical stimulation is an important technique for modulating the functions of the nervous system through electrical stimulus. To implement a more competitive prototype that can tackle the domain-specific difficulties of existing electrical stimulators, three key techniques are proposed in this work. Firstly, a load-adaptive power saving technique called over-voltage detection is implemented to automatically adjust the supply voltage. Secondly, redundant digital calibration (RDC) is proposed to improve current accuracy and ensure safety during long-term electrical stimulation without costing too much circuit area and power. Thirdly, a flexible waveform generator is designed to provide arbitrary stimulus waveforms for particular applications. Measurement results show the stimulator can adjust the supply voltage from 12 V to 100 V automatically, and the measured effective resolution of the stimulation current reaches 14 bits in a full range of 6.5 mA. Without applying charge balancing techniques, the average mismatch between the cathodic and anodic current pulses in biphasic stimulus is 0.0427%. The proposed electrical stimulator can generate arbitrary stimulus waveforms, including sine, triangle, rectangle, etc., and it is supposed to be competitive for implantable and wearable devices. Full article
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