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Implantable Biosensor and Chemical Sensor Systems for Biomedical and Environmental Monitoring Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Biomaterials".

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 4839

Special Issue Editor


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Guest Editor
College of Engineering and Computing Sciences, New York Institute of Technology, New York, NY 10023, USA
Interests: medical devices; low-power circuits; biomedical signal processing; wireless power transfer; network security
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Sensor systems have become central for monitoring disease progression, detecting rare events, and tracking daily activities. In addition to sensors, these systems require electronics for data acquisition; signal processing and machine learning for extracting useful information; packaging for reliable sealing, support, and safety; and power subsystems for extended battery life. In this Special Issue of Materials we seek contributions on smart sensor systems for biomedical monitoring applications. We invite manuscript submissions emphasizing system or subsystem designs that take advantage of the unique properties of specific sensing mechanisms, or applications. Approaches taking advantage of optimizations crossing multiple subsystems are especially welcomed.

The topics of interest include but are not limited to:

      - Wearable and implantable sensors and low-power sensor interface circuits

      - Sensor fabrication, integration, and modelling

      - Sensor arrays and related issues

      - Wireless power transfer to implantable systems and energy harvesting

      - Power circuits and battery technologies tailored to the specific sensing mechanisms

      - Biocompatibility, sensor fouling, and drift

      - Point-of-care systems and lab-on-chip

Submissions from areas not explicitly listed above but related to this Special Issue and extensive critical reviews with topics of relevance to this Special Issue will also be considered, but it is advisable to coordinate with the Guest Editor prior to submission of the manuscript.

Dr. N. Sertac Artan
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

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

  • sensors and sensor arrays
  • implantable and wearable devices
  • wireless power transfer
  • biomedical circuits and systems

Published Papers (1 paper)

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Research

17 pages, 6071 KiB  
Article
Analysis on the Effects of the Human Body on the Performance of Electro-Textile Antennas for Wearable Monitoring and Tracking Application
by Nurul Huda Abd Rahman, Yoshihide Yamada and Muhammad Shakir Amin Nordin
Materials 2019, 12(10), 1636; https://doi.org/10.3390/ma12101636 - 19 May 2019
Cited by 40 | Viewed by 4456
Abstract
Previous works have shown that wearable antennas can operate ideally in free space; however, degradation in performance, specifically in terms of frequency shifts and efficiency was observed when an antenna structure was in close proximity to the human body. These issues have been [...] Read more.
Previous works have shown that wearable antennas can operate ideally in free space; however, degradation in performance, specifically in terms of frequency shifts and efficiency was observed when an antenna structure was in close proximity to the human body. These issues have been highlighted many times yet, systematic and numerical analysis on how the dielectric characteristics may affect the technical behavior of the antenna has not been discussed in detail. In this paper, a wearable antenna, developed from a new electro-textile material has been designed, and the step-by-step manufacturing process is presented. Through analysis of the frequency detuning effect, the on-body behavior of the antenna is evaluated by focusing on quantifying the changes of its input impedance and near-field distribution caused by the presence of lossy dielectric material. When the antenna is attached to the top of the body fat phantom, there is an increase of 17% in impedance, followed by 19% for the muscle phantom and 20% for the blood phantom. These phenomena correlate with the electric field intensities (V/m) observed closely at the antenna through various layers of mediums (z-axis) and along antenna edges (y-axis), which have shown significant increments of 29.7% in fat, 35.3% in muscle and 36.1% in blood as compared to free space. This scenario has consequently shown that a significant amount of energy is absorbed in the phantoms instead of radiated to the air which has caused a substantial drop in efficiency and gain. Performance verification is also demonstrated by using a fabricated human muscle phantom, with a dielectric constant of 48, loss tangent of 0.29 and conductivity of 1.22 S/m. Full article
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