Dielectric characterization of biocompatible hydrogels for application to Epidermal RFID devices
Dielectric characterization of biocompatible hydrogels for application to Epidermal RFID devices
复制标题
用于表皮 RFID 设备的生物相容性水凝胶的介电特性
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
G. Marrocco
中科院分区：
文献类型：
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作者：
S. Amendola;C. Occhiuzzi;A. Ajovalasit;M. Sabatino;C. Dispenza;G. Marrocco
目前正在研究功能化的类皮肤膜，用于设计用于传感和愈合应用的新型表皮电子器件。表皮天线在液体吸收和释放过程中的动态响应是RFID无线传感器和致动器设计的关键。本文讨论了在UHF RFID频段的PVA基生物相容性水凝胶膜的介电性能的表征通过修改的环形谐振器。在干燥状态下以及当暴露于模拟出汗或伤口渗出物的体液的逐渐释放时测量具有不同组成的样品。据发现，介电常数增加高达10倍，表明这种膜也可以用作传感器。
Functionalized skin-like membranes are currently under investigation for the design of a new class of Epidermal Electronics devices for sensing and healing applications. The dynamic response of epidermal antennas in presence of absorption and release of fluids is a key-point to design RFID radio-sensors and actuators. This paper addresses the characterization of the dielectric property of PVA-based biocompatible hydrogel membranes in the UHF RFID band by means of a modified ring resonator. Samples having different compositions are measured in the dry state as well as when exposed to a progressive release of body fluids emulating perspirations or wound exudates. It was found that the permittivity increases up to 10 times demonstrating that such membranes may be also used as sensors.