Role Of Vertical Component Of Surface Tension Of The Droplet On The Elastic Deformation Of Pdms Membrane

doi:10.1163/156856108X305732

IMECH-IR > 力学所知识产出(1956-2008)

	Role Of Vertical Component Of Surface Tension Of The Droplet On The Elastic Deformation Of Pdms Membrane
	Yu YS(余迎松); Yang ZY(杨振宇); Zhao YP(赵亚溥); Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
发表期刊	Journal of Adhesion Science and Technology
	2008
页码	687-698
ISSN	0169-4243
摘要	Poly(dimethylsiloxane) (PDMS) has been widely used in lab-on-a-chip and micro- total analysis systems (mu-TAS), thus wetting and electrowetting behaviors of PDMS are of great importance in these devices. PDMS is a kind of soft polymer material, so the elastic deformation of PDMS membrane by a droplet cannot be neglected due to the vertical component of the interfacial tension between the liquid and vapor, and this vertical component of liquid-vapor surface tension is also balanced by the stress distribution within the PDMS membrane. Such elastic deformation and stress distribution not only affect the exact measurement of contact angle, but also have influence on the micro-fluidic behavior of the devices. Using ANSYS code, we simulated numerically the elastic deformation and stress distribution of PDMS membrane on a rigid substrate due to the liquid-vapor surface tension. It is found that the vertical elastic deformation of the PDMS membrane is on the order of several tens of nanometers due to the application of a droplet with a diameter of 2.31 mm, which is no longer negligible for lab-on-a-chip and mu-TAS. The vertical elastic deformation increases with the thickness of the PDMS membrane, and there exists a saturated membrane thickness, regarded as a semi-infinite membrane thickness, and the vertical elastic deformation reaches a limiting value when the membrane thickness is equal to or thicker than such saturated thickness. (C) Koninklijke Brill NV, Leiden, 2008.
关键词	Capillarity Wetting Young's Equation Vertical Component Numerical Simulation Contact Angles Solid-surfaces Thin Dynamics Liquids Films
DOI	10.1163/156856108X305732
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000257949700002
关键词[WOS]	CONTACT ANGLES ; SOLID-SURFACES ; THIN ; DYNAMICS ; LIQUIDS ; FILMS
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Chemical ; Materials Science, Multidisciplinary ; Mechanics
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/25952
专题	力学所知识产出(1956-2008)
通讯作者	Zhao, YP (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Yu YS,Yang ZY,Zhao YP,et al. Role Of Vertical Component Of Surface Tension Of The Droplet On The Elastic Deformation Of Pdms Membrane[J]. Journal of Adhesion Science and Technology,2008:687-698.
APA	余迎松,杨振宇,赵亚溥,&Zhao, YP .(2008).Role Of Vertical Component Of Surface Tension Of The Droplet On The Elastic Deformation Of Pdms Membrane.Journal of Adhesion Science and Technology,687-698.
MLA	余迎松,et al."Role Of Vertical Component Of Surface Tension Of The Droplet On The Elastic Deformation Of Pdms Membrane".Journal of Adhesion Science and Technology (2008):687-698.

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