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Study of microscale interfacial phen...

Gokhale, Shripad.

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Study of microscale interfacial phenomena during phase change processes: Analysis of micro-drops and thin films.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Study of microscale interfacial phenomena during phase change processes: Analysis of micro-drops and thin films./
作者:	Gokhale, Shripad.
面頁冊數:	219 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-04, Section: B, page: 2189.
Contained By:	Dissertation Abstracts International66-04B.
標題:	Engineering, Chemical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3173262
ISBN:	0542106590

Study of microscale interfacial phenomena during phase change processes: Analysis of micro-drops and thin films.
Gokhale, Shripad.

Study of microscale interfacial phenomena during phase change processes: Analysis of micro-drops and thin films. - 219 p.

Source: Dissertation Abstracts International, Volume: 66-04, Section: B, page: 2189.

Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 2005.

Interfacial phenomena in the three phase contact line region, where a liquid-vapor interface intersects a solid surface, are of importance to many phenomena such as contact angle, adsorption, surface patterning, spreading, thin film stability, phase change, etc.

ISBN: 0542106590Subjects--Topical Terms:

1018531
Engineering, Chemical.

Study of microscale interfacial phenomena during phase change processes: Analysis of micro-drops and thin films.
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100 1 $a Gokhale, Shripad. $3 1907684
245 1 0 $a Study of microscale interfacial phenomena during phase change processes: Analysis of micro-drops and thin films.
300 $a 219 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-04, Section: B, page: 2189.
500 $a Advisers: Peter C. Wayner, Jr.; Joel L. Plawsky.
502 $a Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 2005.
520 $a Interfacial phenomena in the three phase contact line region, where a liquid-vapor interface intersects a solid surface, are of importance to many phenomena such as contact angle, adsorption, surface patterning, spreading, thin film stability, phase change, etc.
520 $a The objectives of this work are to experimentally analyze the coupled phenomena of spreading and phase change for a partially wetting system. We studied five experimental systems: S1---spreading of apolar n-butanol drops during phase change processes, S2 and S3---effects of surface modification on n-butanol spreading and dewetting of the meniscus, S4---spreading of polar 2-propanol drop, S5---coalescence of 2-propanol droplets, and S6---evaporation and spreading of surfactant laden micro-drops of water.
520 $a Using system S1, we found that the interfacial velocity for the drop during condensation and evaporation is a function of the apparent contact angle and the rate of change of radius of curvature.
520 $a Using systems S2 and S3, the vivid difference in the behavior of the retracting meniscus with respect to its variation in apparent contact angle and curvature was found to depend on the wettability.
520 $a Using system S4, an improved image analyzing technique based on the reflectivity measurements using interferometry was developed, which gives fundamental insights about the physics of interfacial phenomena of a spreading drop during phase change.
520 $a The reflectivity technique was also used in system S5 to study the shapes of condensing drops during their coalescence on the quartz surface. We found that the curvature and its gradient govern the growth and coalescence of the condensing drops.
520 $a In system S6, the stability of the adsorbed film was analyzed using the concept of minimization of the interfacial free energy. During a phase change process, the thin film of the surfactant solution was unstable and it broke into micro-drops. The drop profiles were experimentally measured and analyzed during the phase change process as the contact line advanced and receded. The important finding of the experiments is the abrupt change in the velocity of the contact line, when the adsorbed film of the surfactant solution is just hydrated or desiccated, during the phase change processes.
590 $a School code: 0185.
650 4 $a Engineering, Chemical. $3 1018531
650 4 $a Physics, Optics. $3 1018756
650 4 $a Physics, Fluid and Plasma. $3 1018402
690 $a 0542
690 $a 0752
690 $a 0759
710 2 0 $a Rensselaer Polytechnic Institute. $3 1019062
773 0 $t Dissertation Abstracts International $g 66-04B.
790 1 0 $a Wayner, Peter C., Jr., $e advisor
790 1 0 $a Plawsky, Joel L., $e advisor
790 $a 0185
791 $a Ph.D.
792 $a 2005
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