| 초록 |
In this work, we described soft and ultrastretchable fiber with magnetic liquid metal (MLM) core for electrical switch by remote magnetic actuation. MLM is prepared by removing the oxide layer and subsequent mixing with iron particle. Once hollow elastic fiber forms, MLM is injected into the core of the fiber. The fiber is ultrastretchable while maintaining electrical conductivity and magnetic property due to fluidic nature of the core. Magnetic strength of the fibers was characterized by measuring maximum effective distance between magnet and fiber as a function of concentration of iron particle in the MLM core and the fiber. The MLM core allows the fiber to use in electrical switch by remote magnetic actuation due to magnetic and conductive properties. This ultrastretchable and elastic fiber with MLM core would find use in soft robotics, wearable devices and stretchable electronics. This work was supported by BK21 FOUR program and Basic Research Laboratory Program (2020R1A4A1018259). |
