Elasto-capillarity: deforming an elastic structure with a liquid droplet
- 16 November 2010
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 22 (49), 493101
- https://doi.org/10.1088/0953-8984/22/49/493101
Abstract
Although negligible at macroscopic scales, capillary forces become dominant as the sub-millimetric scales of micro-electro-mechanical systems (MEMS) are considered. We review various situations, not limited to micro-technologies, where capillary forces are able to deform elastic structures. In particular, we define the different length scales that are relevant for 'elasto-capillary' problems. We focus on the case of slender structures (lamellae, rods and sheets) and describe the size of a bundle of wet hair, the condition for a flexible rod to pierce a liquid interface or the fate of a liquid droplet deposited on a flexible thin sheet. These results can be generalized to similar situations involving adhesion or fracture energy, which widens the scope of possible applications from biological systems, to stiction issues in micro-fabrication processes, the manufacturing of 3D microstructures or the formation of blisters in thin film coatings.Keywords
This publication has 100 references indexed in Scilit:
- Nanofabrication: Curving Nanostructures Using Extrinsic Stress (Adv. Mater. 21/2010)Advanced Materials, 2010
- Three Dimensional Nanofabrication Using Surface ForcesLangmuir, 2010
- Three‐Dimensional Fabrication at Small Size ScalesSmall, 2010
- Two- and three-dimensional folding of thin film single-crystalline silicon for photovoltaic power applicationsProceedings of the National Academy of Sciences of the United States of America, 2009
- Self-Assembly of Lithographically Patterned NanoparticlesNano Letters, 2009
- Self-assembly from milli- to nanoscales: methods and applicationsJournal of Micromechanics and Microengineering, 2009
- The macroscopic delamination of thin films from elastic substratesProceedings of the National Academy of Sciences of the United States of America, 2009
- Influence of liquid surface tension on stiction of SOI MEMSJournal of Micromechanics and Microengineering, 2004
- Microfabricated adhesive mimicking gecko foot-hairNature Materials, 2003
- Preparation and properties of rubber dislocationsNature, 1976