Abstract
Electric components based on fibers or textiles have been investigated owing to their potential applications in wearable devices. High performance on response to gas, drape-ability and washing durability are of important for gas sensors based on fiber substrates. In this report, we demonstrate the bendable and washable electronic textile (e-textile) gas sensors composed of reduced graphene oxides (RGOs) using commercially available yarn and molecular glue through an electrostatic self-assembly. The e-textile gas sensor possesses chemical durability to several detergent washing treatments and mechanical stability under 1,000 bending tests at an extreme bending radius of 1 mm as well as a high response to NO2 gas at room temperature with selectivity to other gases such as acetone, ethanol, ethylene, and CO2.
Highlights
Fiber-shaped electric components such as thin film transistors (TFTs)[1,2,3], light-emitting diodes (LEDs)[4], energy harvesters[5], energy storage devices[6,7,8], and sensors[3,9,10] with high performance and flexibility are of great interest owing to their potential applications in portable devices and wearable electronics
This method was found to be effective for the preparation of ultrasensitive gas sensors and pliable electronic wires owing to their highly flexible and conducting properties
We demonstrate the effectiveness of wearable gas sensors based on reduced graphene oxide-decorated yarn (RGOY) with
Summary
Yong Ju Yun[1], Won G. Several fiber sensors based on conducting polymers and metal oxides have been developed[13,14,15] These sensors are unsuitable for flexible and wearable gas sensors owing to their poor mechanical/chemical durability and operation at high temperature. Graphene and its derivatives have been the focus of research owing to their ultra-high surface area, excellent electrical properties, and good selectivity without the need for a catalyst or modification[16,17] They show high mechanical strength with flexibility[18,19], which makes them ideal candidate materials for high-performance flexible gas sensors[20,21,22,23]
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