A General Approach for Buckled Bulk Composites by
Combined Biaxial Stretch and Layer-by-Layer Deposition and Their Electrical and
Electromagnetic Applications
Liu, ZS (Liu, Zhongsheng)[ 1,2 ] ; Wan, FY (Wan, Fayu)[ 3 ] ; Mou, LL (Mou, Linlin)[ 1 ] ; de Andrade, MJ (de Andrade, Monica Jung)[ 4 ] ; Qian, D (Qian, Dong)[ 5 ] ; Wang, R (Wang, Run)[ 1 ] ; Yin, SG (Yin, Shougen)[ 6,7 ] ; Li, K (Li, Kun)[ 6,7 ] ; Chen, H (Chen, Hong)[ 8 ] ; An, BG (An, Baigang)[ 9 ] ; Hu, ZZ (Hu, Zhizhi)[ 9 ]; Wang, HZ (Wang, Hongzhi)[ 2 ] ; Zhu, MF (Zhu, Meifang)[ 2 ] ; Fang, SL (Fang, Shooli)[ 4 ] ; Liu, ZF (Liu, Zunfeng)[ 1 ] ...更少内容
ADVANCED ELECTRONIC MATERIALS, 2019, 5(4): 文献号: 1800817
DOI: 10.1002/aelm.201800817
Abstract
Fabrication
of high quality stretchable conductors that show bulk structure, high
electrical conductivity, and stable conductance under large deformations is
crucial for wearable electronics and soft robots. A key difficulty here is to
introduce buckled structure into the conductive phase of the bulk conductors
and overcome the lateral crack problem in the conductive phase during buckle
formation. In this paper, a general approach is introduced for fabricating
novel buckled bulk composite (BBC) stretchable conductors based on common
conductive nanomaterial by using sequential biaxial stretch release and
layer-by-layer deposition to provide alternating buckled conductive layers and
elastomer layers. This biaxial stretch is used to keep the width of elastomers
unchanged before and after stretching, to avoid the lateral crack formation of
the conductive layer. This method can be applied to common nanoparticles, such
as silver nanoparticles, silver nanowires, single-walled carbon nanotubes, and
graphenes. The BBCs exhibit high conductance, uniform structure, and stable
conductance during deformation and temperature change, which are demonstrated
as applications in electrical interconnects, electrothermally driven artificial
muscles, electromagnetic interference shielding materials, and reconfigurable
antennas.
