Abstract
The thermal response and distribution of microheaters were studied to further investigate the law of periodic bubble generation on the surface of microheaters, and dimensionless solid-liquid coupling heat conduction concerning microheaters and the surrounding liquid was thus analyzed. Based on the example of Pt film as the heating resister and water as the working liquid, it is concluded that the dimensionless time does not relate to the thickness of film heater, but varies with the dimensionless value of volume heating resource. Compared with current heating pulse, quadratic voltage heating pulse is more liable to incite periodic bubbles and more applicable as well. Besides, the thickness of superheated liquid layer and the affected zone was defined and discussed.
Abstract
The thermal response and distribution of microheaters were studied to further investigate the law of periodic bubble generation on the surface of microheaters, and dimensionless solid-liquid coupling heat conduction concerning microheaters and the surrounding liquid was thus analyzed. Based on the example of Pt film as the heating resister and water as the working liquid, it is concluded that the dimensionless time does not relate to the thickness of film heater, but varies with the dimensionless value of volume heating resource. Compared with current heating pulse, quadratic voltage heating pulse is more liable to incite periodic bubbles and more applicable as well. Besides, the thickness of superheated liquid layer and the affected zone was defined and discussed.
Open Access
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