Continuous Electrowetting of Non-toxic Liquid Metal for RF Applications
作者： Ryan C. Gough , Andy M. Morishita , Jonathan H. Dang , Wenqi Hu , Wayne A. Shiroma
DOI: 10.1109/ACCESS.2014.2350531
关键词: Communication channel 、 Wetting 、 Liquid metal 、 Actuator 、 Materials science 、 Galinstan 、 Optoelectronics 、 Slot antenna 、 Radio frequency 、 Electrowetting
摘要: Continuous electrowetting (CEW) is demonstrated to be an effective actuation mechanism for reconfigurable radio frequency (RF) devices that use non-toxic liquid-metal tuning elements. Previous research has shown CEW efficient means of electrically inducing motion in a slug, but precise control the slug's position within fluidic channels not been demonstrated. Here, positioning slugs achieved using conjunction with designed minimize surface energy at discrete locations. This approach leverages high tension liquid metal its resting submillimeter accuracy. The and channel design were optimized create RF devices. In addition, solutions reliable gallium-based, alloy (Galinstan) are presented mitigate tendency form oxide layer capable wetting walls, inhibiting motion. A slot antenna utilizing these techniques achieve 15.2% tunable bandwidth
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