title: Highly Sensitive Bendable and Foldable Paper Sensors Based on Reduced Graphene Oxide.
abstract: Over the past decade, the demand for high-performance wearable sensors has increased because of their capability for interaction with humans. Such sensors have typically been prepared on conventional substrates, such as silicon, PDMS, and copper mesh. In this work, we propose a class of wearable sensors fabricated from reduced graphene oxide (rGO) patterned paper substrates (rGO-paper). These rGO-paper sensors are highly sensitive to various deformations and capable of measuring bending and folding angles as small as 0.2° and 0.1°, respectively. We have demonstrated the applicability of these high-performance rGO-paper sensors by patterning rGO on kirigamis that can detect pulse and the motion of knees, wrists, and fingers. Finally, paper rings lined with rGO sensors were used to control a robotic hand, and an rGO-paper keyboard was used to light LEDs.
authors.affiliation: BK21+ Transformative Training Program for Creative Mechanical and Aerospace Engineers and ‡Department of Mechanical and Aerospace Engineering, Seoul National University , Seoul 151744, South Korea.
authors.forename: Biswajit
authors.identifier: http://orcid.org/0000-0002-6201-6628
authors.initials: B
authors.lastname: Saha
authors.affiliation: BK21+ Transformative Training Program for Creative Mechanical and Aerospace Engineers and ‡Department of Mechanical and Aerospace Engineering, Seoul National University , Seoul 151744, South Korea.
authors.forename: Sangwoong
authors.initials: S
authors.lastname: Baek
authors.affiliation: BK21+ Transformative Training Program for Creative Mechanical and Aerospace Engineers and ‡Department of Mechanical and Aerospace Engineering, Seoul National University , Seoul 151744, South Korea.
authors.forename: Junghoon
authors.initials: J
authors.lastname: Lee
keywords: bendable-foldable strain sensor; paper sensor; reduced graphene oxide