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Fast Electrochemical Actuator with Ti Electrodes in the Current Stabilization Regimeстатья
- Авторы: Uvarov I.V., Melenev A.E., Svetovoy V.B.
- Журнал: MICROMACHINES
- Том: 13
- Номер: 2
- Год издания: 2022
- Первая страница: 283
- DOI: 10.3390/mi13020283
- Аннотация: The actuators needed for autonomous microfluidic devices have to be compact, low-power consuming,and compatible with microtechnology. The electrochemical actuators could be goodcandidates, but they suffer from a long response time due to slow gas termination. An actuator inwhich the gas is terminated orders of magnitude faster has been demonstrated recently. It uses waterelectrolysis performed by short voltage pulses of alternating polarity (AP). However, oxidation ofTi electrodes leads to a rapid decrease in the performance. In this paper, we demonstrate a specialdriving regime of the actuator, which is able to support a constant stroke for at least 105 cycles.The result is achieved using a new driving regime when a series of AP pulses are interspersedwith a series of single-polarity (SP) pulses. The new regime is realized by a special pulse generatorthat automatically adjusts the amplitude of the SP pulses to keep the current flowing through theelectrodes at a fixed level. The SP pulses increase the power consumption by 15–60% compared tothe normal AP operation and make the membrane oscillate in a slightly lifted position.
- Добавил в систему: Световой Виталий Борисович