液态金属
天线(收音机)
电压
控制理论(社会学)
材料科学
毛细管作用
自动频率控制
物理
光电子学
计算机科学
电气工程
工程类
控制(管理)
人工智能
复合材料
作者
M. Wang,M. Rashed Khan,Chris Trlica,Michael D. Dickey,Jacob J. Adams
标识
DOI:10.1109/aps.2015.7305500
摘要
We demonstrate a pump-free method to control the length of liquid metal in a capillary as a means to change the operating frequency of a monopole antenna. An applied DC voltage controls the surface tension of the liquid metal filament, causing it to lengthen or contract, varying the antenna's resonant length. A closed-loop feedback system tracks the antenna's operating frequency and adjusts the applied voltage to shape the liquid metal towards the desired response. Measurements show that the process is controlled and fully reversible, dynamically adjusting to a programmed frequency.
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