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Open AccessReview

Liquid Metal Based Flexible and Implantable Biosensors

by 1,2,3,†, 1,2,4,†, 5 and 1,2,4,*
1
Chinese Academy of Sciences Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Beijing 100190, China
2
Beijing Key Lab of CryoBiomedical Engineering and Key Lab of Cryogenics, Beijing 100190, China
3
School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100039, China
4
School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
5
Department of Mechanical Engineering, Imperial College London, London SW7 2BU, UK
*
Author to whom correspondence should be addressed.
These authors contribute equally to the manuscript.
Biosensors 2020, 10(11), 170; https://doi.org/10.3390/bios10110170
Received: 14 October 2020 / Revised: 30 October 2020 / Accepted: 31 October 2020 / Published: 10 November 2020
(This article belongs to the Special Issue Liquid Metal Enabled Bio-Related Applications)
Biosensors are the core elements for obtaining significant physiological information from living organisms. To better sense life information, flexible biosensors and implantable sensors that are highly compatible with organisms are favored by researchers. Moreover, materials for preparing a new generation of flexible sensors have also received attention. Liquid metal is a liquid-state metallic material with a low melting point at or around room temperature. Owing to its high electrical conductivity, low toxicity, and superior fluidity, liquid metal is emerging as a highly desirable candidate in biosensors. This paper is dedicated to reviewing state-of-the-art applications in biosensors that are expounded from seven aspects, including pressure sensor, strain sensor, gas sensor, temperature sensor, electrical sensor, optical sensor, and multifunctional sensor, respectively. The fundamental scientific and technological challenges lying behind these recommendations are outlined. Finally, the perspective of liquid metal-based biosensors is present, which stimulates the upcoming design of biosensors. View Full-Text
Keywords: liquid metal; biosensor; flexible; implantable; mechanical; gas; temperature; electrical; optical liquid metal; biosensor; flexible; implantable; mechanical; gas; temperature; electrical; optical
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MDPI and ACS Style

Zhang, M.; Wang, X.; Huang, Z.; Rao, W. Liquid Metal Based Flexible and Implantable Biosensors. Biosensors 2020, 10, 170.

AMA Style

Zhang M, Wang X, Huang Z, Rao W. Liquid Metal Based Flexible and Implantable Biosensors. Biosensors. 2020; 10(11):170.

Chicago/Turabian Style

Zhang, Mingkuan; Wang, Xiaohong; Huang, Zhiping; Rao, Wei. 2020. "Liquid Metal Based Flexible and Implantable Biosensors" Biosensors 10, no. 11: 170.

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