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A novel photonic skin sensor based on tapered micro nano fiber structure coated with sodium polyacrylate film.
- Source :
-
Optical Fiber Technology . May2024, Vol. 84, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- • A novel photonic skin flexible sensor based on partially neutralized sodium polyacrylate is reported for the first time in this paper. • This photon skin flexible sensor has achieved relative humidity sensing for the first time. • The photonic skin flexible sensor has a relative humidity sensitivity of up to 0.1411 dB/%, with a fast response time of 170 ms. • The temperature response exhibits outstanding sensitivity (0.4 dB/°C) in the human skin surface temperature range (30 ∼ 48 °C). Biomimetic skin sensing devices play an important role in next-generation healthcare, robotics, and bioelectronics. In recent years, biomimetic skin-sensing technologies have gained significant attention due to their broad-ranging utility in the fields of healthcare and automation, and future wearable devices designed for health monitoring, robotic applications, and ultra-precise industrial positioning will necessitate the incorporation of flexible optical systems. A novel photonic skin flexible sensor (PSFS) based on partially neutralized sodium polyacrylate (PAS-50) is reported for the first time in this paper. In this study, a novel wearable sensor was designed for real-time detection of temperature and humidity. A single-mode tapered fiber (SMTF) structure based on the principle of evanescent wave is proposed for fast response and real-time monitoring of humidity and temperature. The sensor incorporates an optical micro/nanofiber (MNF) as the core sensing node, while a hydrophilic and ductile Sodium Polyacrylate (PAS) is chosen as the humidity-sensitive material that overcomes the limitation of commonly reported electrical, optical, and material-based flexible devices. Due to the strain amplification effect of the MNF, the sensitivity of the material to relative humidity (RH) is significantly improved, reaching 0.1411 dB/%. In addition, the temperature response exhibits outstanding sensitivity (0.4 dB/°C) in the human skin surface temperature range (30 ∼ 48 °C). Notably, the sensor exhibits a rapid response with a remarkable response time of 170 ms. The proposed PSFS presents novel opportunities for the advancement of future biomimetic skin devices, thus playing a pivotal role in the advancement of next-generation robotics and medical monitoring technologies. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10685200
- Volume :
- 84
- Database :
- Academic Search Index
- Journal :
- Optical Fiber Technology
- Publication Type :
- Academic Journal
- Accession number :
- 176539796
- Full Text :
- https://doi.org/10.1016/j.yofte.2024.103742