Spatially resolved temperature and heat flux measurements for slow evaporating droplets heated by a microfabricated heater array
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The evaporation phenomenon of a liquid droplet was investigated by using microfabricated heaters. All 32 microheaters were designed to have the same resistance. Gold microheaters worked both as temperature indicators and as heaters. The first experiment was performed under a constant voltage mode to investigate the temperature and heat flux variation of the heated surface by the evaporating droplet. The second experiment was performed under constant temperature mode to investigate the spatial and temporal heat flux variation of the constant temperature heater surface by the evaporating droplet heater. Droplet evaporation was recorded with a CCD camera. Experimental data showed temperature and heat flux variations inside and outside of the droplet with respect to time and radial position from the center of the droplet by tomographic deconvolution.
Paik, Sokwon (0001). Spatially resolved temperature and heat flux measurements for slow evaporating droplets heated by a microfabricated heater array. Doctoral dissertation, Texas A&M University. Texas A&M University. Available electronically from