研究目的
Investigating the capillary flow dynamics of water in an array of open nanotextured microgrooves fabricated by femtosecond laser processing of silicon as a function of temperature.
研究成果
The hierarchical capillary surface structure on silicon exhibits excellent capillary performance across the studied temperature range, with enhanced capillary functionality at higher temperatures. The findings are significant for applications in cooling electronics and other high-temperature wicking materials.
研究不足
The study is limited to a temperature range of 23–80°C and uses de-ionized water as the working fluid. The spatial and temporal resolution of video recording may affect the accuracy of velocity measurements.
1：Experimental Design and Method Selection:
The study involves the use of femtosecond laser processing to create hierarchical surface structures on silicon, followed by high-speed video recording to analyze capillary flow dynamics at various temperatures.
2：Sample Selection and Data Sources:
Single-crystal phosphorus-doped silicon samples are used, with capillary flow dynamics studied using de-ionized water.
3：List of Experimental Equipment and Materials:
Includes a femtosecond laser (Astrella, Coherent Inc.), high-speed VEO 710L Phantom camera, syringe pump Elite 11 from Harward Apparatus Inc., and a heater for temperature control.
4：Experimental Procedures and Operational Workflow:
The process involves laser processing of silicon samples, mounting samples on a heater, producing pendant droplets, and capturing liquid spreading with a high-speed camera at different temperatures.
5：Data Analysis Methods:
Spreading distance and velocity are measured using high-speed camera software, with data analyzed to understand flow regimes and temperature effects.
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