Advances in Wearable Sensors

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

Deadline for manuscript submissions: closed (15 August 2021) | Viewed by 2922

Special Issue Editor


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Guest Editor
Department of Materials Science and Engineering, Ajou University, Suwon 16499, Gyeonggi-do, Korea
Interests: nanomaterials; sensors; energy devices; wearable electronics
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Special Issue Information

Dear Colleagues,

Recently, advances in wearable sensors have actuated the evolution of not only personalized healthcare but also IoT applications. The barriers to practical application and usage of wearable sensors began being leveraged by the developments of deformable materials and technologies, especially manufacturing at the micro and nano-scales. However, unlike solid-state sensors, most deformable sensors, particularly stretchable ones, are yet incorporable to a broad range of advances in microelectromechanical (MEMS) that are crucial to unleash their full potential for advanced sensing devices and systems. Accordingly, this Special Issue welcomes all researchers to share breakthrough ideas and studies – including original papers and review articles – on the developments of wearable materials and technologies, including process optimization, quality assurance approaches and metrology.

Dr. Le Thai Duy
Guest Editor

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Keywords

  • wearable sensors and technologies
  • deformable materials processing
  • experimental and theoretical optimizations
  • MEMS-based fabrication and integration
  • IoT sensing applications

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Published Papers (1 paper)

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Research

20 pages, 5409 KiB  
Article
Design and Implementation of Multiband Noncontact Temperature-Measuring Microwave Radiometer
by Guangmin Sun, Jie Liu, Jingyan Ma, Kai Zhang, Zhenlin Sun, Qiang Wu, Hao Wang and Yiming Liu
Micromachines 2021, 12(10), 1202; https://doi.org/10.3390/mi12101202 - 30 Sep 2021
Cited by 8 | Viewed by 2170
Abstract
In this paper, a multiband noncontact temperature-measuring microwave radiometer system is developed. The system can passively receive the microwave signal of the core temperature field of the human body without removing the clothes of the measured person. In order to accurately measure the [...] Read more.
In this paper, a multiband noncontact temperature-measuring microwave radiometer system is developed. The system can passively receive the microwave signal of the core temperature field of the human body without removing the clothes of the measured person. In order to accurately measure the actual temperature of multilayer tissue in human core temperature field, four frequency bands of 4–6 GHz, 8–12 GHz, 12–16 GHz, and 14–18 GHz were selected for multifrequency design according to the internal tissue depth model of human body and the relationship between skin depth and electromagnetic frequency. Used to measure the actual temperature of human epidermis, dermis, and subcutaneous tissue, a small and highly directional multiband angular horn antenna was designed for the radiometer front end. After the error analysis of the full-power microwave radiometer, a novel hardware architecture of the microwave interferometric temperature-measuring radiometer is proposed, and it is proven that the novel interferometric microwave radiometer has less error uncertainty through theoretical deduction. The experimental results show that the maximum detection sensitivity of the novel interferometric microwave temperature-measuring radiometer is 215 mV/dBm, and the temperature sensitivity is 0.047 K/mV. Compared with the scheme of the full-power radiometer, the detection sensitivity is increased 7.45-fold, and the temperature sensitivity is increased 13.89-fold. Full article
(This article belongs to the Special Issue Advances in Wearable Sensors)
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