Self-powered ultrasensitive and highly stretchable temperature-strain sensing composite yarns.
Mater Horiz
; 8(9): 2513-2519, 2021 08 31.
Article
em En
| MEDLINE
| ID: mdl-34870309
ABSTRACT
With the emergence of stretchable/wearable devices, functions, such as sensing, energy storage/harvesting, and electrical conduction, should ideally be carried out by a single material, while retaining its ability to withstand large elastic deformations, to create compact, functionally-integrated and autonomous systems. A new class of trimodal, stretchable yarn-based transducer formed by coating commercially available Lycra® yarns with PEDOTPSS is presented. The material developed can sense strain (first mode), and temperature (second mode) and can power itself thermoelectrically (third mode), eliminating the need for an external power-supply. The yarns were extensively characterized and obtained an ultrahigh (gauge factor â¼3.6 × 105, at 10-20% strain) and tunable (up to about 2 orders of magnitude) strain sensitivity together with a very high strain-at-break point (up to â¼1000%). These PEDOTPSS-Lycra yarns also exhibited stable thermoelectric behavior (Seebeck coefficient of 15 µV K-1), which was exploited both for temperature sensing and self-powering (â¼0.5 µW, for a 10-couple module at ΔT â¼ 95 K). The produced material has potential to be interfaced with microcontroller-based systems to create internet-enabled, internet-of-things type devices in a variety of form factors.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dispositivos Eletrônicos Vestíveis
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article