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灵活的热电型基于石墨烯纤维的温度传感器
Chenying Wang1,2,3, Yuxin Zhang4, Feng Han1,2,3
1School of Instrument Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
Micromachines
|October 28, 2023
概括
灵活的石墨烯纤维 (GFs) 被合成为一种新型的温度传感器. 这种基于石墨烯的传感器表现出高灵敏度和稳定性,可用于实时监测人体体温.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 物理 物理学 物理
背景情况:
- 石墨烯表现出独特的微观结构和优良的热电特性,使其成为一个具有重大意义的新型热电 (TE) 材料.
- 开发基于石墨烯的热电装置的高效和可扩展的方法对于实际应用至关重要.
研究的目的:
- 使用易于微流体技术和绿色还原剂 (维生素C) 合成柔性石墨烯纤维 (GFs).
- 开发和描述一种灵活的温度传感器,使用石墨烯纤维 (GFs) 和 (Pt).
- 评估基于GF的温度传感器的性能和潜在应用,特别是用于实时检测人体温度.
主要方法:
- 石墨烯纤维 (GFs) 通过微流体线技术合成,采用维生素C作为绿色还原剂.
- 使用合成的GFs和 (Pt) 制造了一个灵活的温度传感器.
- 在不同的温度梯度下测量了热电特性,包括电导率,灵敏度和热输出电压.
主要成果:
- 合成的GF表现出高电导率 (2448 S/m),高灵活性和轻量化.
- 基于GF和Pt的温度传感器在120°C的温度梯度下实现了29.9μV/°C的灵敏度和3.45mV的热电压输出.
- 传感器表现出良好的可扩展性,增加了p-n热电偶的灵敏度,以及出色的循环稳定性,可重复性和抗曲干扰的性能.
结论:
- 简单的微流体技术为生产高性能石墨烯纤维提供了可扩展和绿色的方法.
- 开发的基于石墨烯纤维的灵活温度传感器表现出有希望的热电特性和稳定性.
- 这种传感器具有实时,非侵入性的人体体温监测应用的巨大潜力.
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