Capillary Wrinkling of Floating Thin Polymer Films

@article{citeulike:1670099, abstract = {A freely floating polymer film, tens of nanometers in thickness, wrinkles under the capillary force exerted by a drop of water placed on its surface. The wrinkling pattern is characterized by the number and length of the wrinkles. The dependence of the number of wrinkles on the elastic properties of the film and on the capillary force exerted by the drop confirms recent theoretical predictions on the selection of a pattern with a well-defined length scale in the wrinkling instability. We combined scaling relations that were developed for the length of the wrinkles with those for the number of wrinkles to construct a metrology for measuring the elasticity and thickness of ultrathin films that relies on no more than a dish of fluid and a low-magnification microscope. We validated this method on polymer films modified by plasticizer. The relaxation of the wrinkles affords a simple method to study the viscoelastic response of ultrathin films. 10.1126/science.1144616}, author = {Huang, Jiangshui and Juszkiewicz, Megan and de Jeu, Wim H. and Cerda, Enrique and Emrick, Todd and Menon, Narayanan and Russell, Thomas P. }, citeulike-article-id = {1670099}, doi = {10.1126/science.1144616}, journal = {Science}, keywords = {flexible-electronics, macroelectronics, mechanics, modeling, polymer-substrate}, month = {August}, number = {5838}, pages = {650--653}, posted-at = {2007-09-18 20:03:03}, priority = {3}, title = {Capillary Wrinkling of Floating Thin Polymer Films}, url = {http://dx.doi.org/10.1126/science.1144616}, volume = {317}, year = {2007} }

TY - JOUR ID - citeulike:1670099 L3 - citeulike-article-id:1670099 TI - Capillary Wrinkling of Floating Thin Polymer Films JF - Science VL - 317 IS - 5838 SP - 650 EP - 653 N2 - A freely floating polymer film, tens of nanometers in thickness, wrinkles under the capillary force exerted by a drop of water placed on its surface. The wrinkling pattern is characterized by the number and length of the wrinkles. The dependence of the number of wrinkles on the elastic properties of the film and on the capillary force exerted by the drop confirms recent theoretical predictions on the selection of a pattern with a well-defined length scale in the wrinkling instability. We combined scaling relations that were developed for the length of the wrinkles with those for the number of wrinkles to construct a metrology for measuring the elasticity and thickness of ultrathin films that relies on no more than a dish of fluid and a low-magnification microscope. We validated this method on polymer films modified by plasticizer. The relaxation of the wrinkles affords a simple method to study the viscoelastic response of ultrathin films. 10.1126/science.1144616 KW - flexible-electronics KW - macroelectronics KW - mechanics KW - modeling KW - polymer-substrate AU - Huang, Jiangshui AU - Juszkiewicz, Megan AU - de Jeu, Wim AU - Cerda, Enrique AU - Emrick, Todd AU - Menon, Narayanan AU - Russell, Thomas PY - 2007/08/03/ UR - http://dx.doi.org/10.1126/science.1144616 ER -