A highly stretchable strain-insensitive temperature sensor exploits the Seebeck effect in nanoparticle-based printed circuits. Issue 42 (14th October 2019)

• Record Type: Journal Article
• Authors: Xin, Yangyang; Zhou, Jian; Lubineau, Gilles
• Is Part Of: Journal of materials chemistry. Volume 7:Issue 42(2019)
• Page Start: 24493
• Page End: 24501
• Publication Date: 2019-10-14
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c9ta07591g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Stretchable temperature sensors are critical components in soft robotics. Abstract : Stretchable temperature sensors are critical components in soft robotics. Most existing temperature-sensing technologies feature a strong coupling between the response to temperature and response to deformation of the measured object, resulting in strain-polluted temperature measurements. Here we leverage the Seebeck effect in nanoparticle-based printed circuits. Using nanoparticle-based circuits as conductive wires provides stretchability. While a resistive measurement is highly perturbed by strain variations, using a Seebeck-induced change in the voltage ensures that the measured signal is insensitive to strain. Two nano-structured wires made of different materials are printed and embedded in a soft polymeric film to form a micro-thermocouple. This temperature sensor shows good stretchability up to 40% strain, high linearity of response, and excellent repeatability between different samples.