title: Highly stretchable and sensitive strain sensor based on silver nanowire-elastomer nanocomposite.
abstract: The demand for flexible and wearable electronic devices is increasing due to their facile interaction with human body. Flexible, stretchable and wearable sensors can be easily mounted on clothing or directly attached onto the body. Especially, highly stretchable and sensitive strain sensors are needed for the human motion detection. Here, we report highly flexible, stretchable and sensitive strain sensors based on the nanocomposite of silver nanowire (AgNW) network and PDMS elastomer in the form of the sandwich structure (i.e., AgNW thin film embedded between two layers of PDMS). The AgNW network-elastomer nanocomposite based strain sensors show strong piezoresistivity with tunable gauge factors in the ranges of 2 to 14 and a high stretchability up to 70%. We demonstrate the applicability of our high performance strain sensors by fabricating a glove integrated with five strain sensors for the motion detection of fingers and control of an avatar in the virtual environment.
authors.affiliation: Department of Mechanical Engineering, ‡KI for the NanoCentury, §Mobile Sensor and IT Convergence (MOSAIC) Center, and ∥Department of Physics, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 305-701, South Korea.
authors.forename: Morteza
authors.initials: M
authors.lastname: Amjadi
authors.forename: Aekachan
authors.initials: A
authors.lastname: Pichitpajongkit
authors.forename: Sangjun
authors.initials: S
authors.lastname: Lee
authors.forename: Seunghwa
authors.initials: S
authors.lastname: Ryu
authors.forename: Inkyu
authors.initials: I
authors.lastname: Park
mesh_terms: D003020:Clothing; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004548:Elasticity; D020724:Elastomers; D004563:Electrochemistry; D004581:Electronics; D004867:Equipment Design; D005385:Fingers / Q000502:physiology; D006225:Hand / Q000502:physiology*; D006801:Humans; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry*; D018670:Monitoring, Ambulatory / Q000379:methods; D009038:Motion; D053761:Nanocomposites / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D053770:Nanowires / Q000737:chemistry*; D012815:Signal Processing, Computer-Assisted; D012834:Silver / Q000737:chemistry*; D018030:Silver Compounds / Q000737:chemistry; D012984:Software; D013314:Stress, Mechanical
chemical_list: D004129:Dimethylpolysiloxanes; D020724:Elastomers; D018030:Silver Compounds; D012834:Silver; C013830:baysilon