title: Enhanced Sensitivity of Patterned Graphene Strain Sensors Used for Monitoring Subtle Human Body Motions.
abstract: With the growth of the wearable electronics industry, structural modifications of sensing materials have been widely attempted to improve the sensitivity of sensors. Herein, we demonstrate patterned graphene strain sensors, which can monitor small-scale motions by using the simple, scalable, and solution-processable method. The electrical properties of the sensors are easily tuned via repetition of the layer-by-layer assembly, leading to increment of thickness of the conducting layers. In contrast to nonpatterned sensors, the patterned sensors show enhanced sensitivity and the ability to distinguish subtle motions, such as similar phonations and 81 beats per minute of pulse rate.
authors.affiliation: Department of Chemical and Biomolecular Engineering (BK21+ Graduate Program), Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
authors.forename: Sang Woo
authors.initials: SW
authors.lastname: Lee
authors.affiliation: Department of Chemical and Biomolecular Engineering (BK21+ Graduate Program), Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
authors.forename: Jung Jin
authors.initials: JJ
authors.lastname: Park
authors.affiliation: Organic Analysis PJT, Corporate R&D, LG Chem. Ltd. , 188 Munji-ro, Yuseong-gu, Daejeon 34122, Republic of Korea.
authors.forename: Byung Hyun
authors.initials: BH
authors.lastname: Park
authors.affiliation: Department of Chemical Engineering and Materials Science, University of Minnesota , 421 Washington Avenue S.E., Minneapolis, Minnesota 55455, United States.
authors.forename: Sung Cik
authors.initials: SC
authors.lastname: Mun
authors.affiliation: Department of Mechanical Engineering, Myongji University , 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggi-do 17058, Republic of Korea.
authors.forename: Yong Tae
authors.initials: YT
authors.lastname: Park
authors.affiliation: Department of Mechanical Engineering, Khalifa University of Science, Technology & Research , Abu Dhabi 127788, United Arab Emirates.
authors.forename: Kin
authors.initials: K
authors.lastname: Liao
authors.affiliation: Department of Chemical Engineering, College of Engineering, Kyung Hee University , 1732 Deogyeong-daero, Giheung-gu, Yongin, Gyeonggi-do 17104, Republic of Korea.
authors.forename: Tae Seok
authors.initials: TS
authors.lastname: Seo
authors.affiliation: Department of Chemical Engineering and Materials Science, University of Minnesota , 421 Washington Avenue S.E., Minneapolis, Minnesota 55455, United States.
authors.forename: Woo Jin
authors.initials: WJ
authors.lastname: Hyun
authors.affiliation: Department of Chemical and Biomolecular Engineering (BK21+ Graduate Program), Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
authors.forename: O Ok
authors.initials: OO
authors.lastname: Park
mesh_terms: D006108:Graphite; D018594:Human Body; D006801:Humans; D009038:Motion
chemical_list: D006108:Graphite
keywords: graphene pattern; human motion monitoring; layer-by-layer assembly; strain sensor; stretchable electronics