Torsional Actuator Powered by Environmental Energy Harvesting from Diurnal Temperature Variation

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• 作者：Dongseok Suh ; Thuy Kieu Truong ; Daniel G. Suh ; Seong Chu Lim
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：December 5, 2016
• 年：2016
• 卷：4
• 期：12
• 页码：6647-6652
• 全文大小：387K
• ISSN：2168-0485

文摘

Inspired by phase-change technology storing thermal energy in the form of latent heat, direct conversion of environmental temperature variation into a useful form of mechanical work is achieved using the drastic volume change of a phase-change material during solid–liquid phase transformation. A twisted carbon nanotube yarn in combination with a phase-change material functions as a backbone of torsional actuator, powered by the change of environmental temperature, because nanopores among carbon nanotubes or their bundles are completely filled with the phase-change material. By the proper selection of infiltrated material whose melting temperature lies within a diurnal temperature range, this hybrid yarn can be applied in an autonomous system using naturally abundant low-grade thermal energy flow.