Shenoy, Vijay and Sharma, Ashutosh (2002) Dewetting of Glassy Polymer Films. In: Physical Review Letters, 88 (23). 236101/1-4.
Dynamics and morphology of hole growth in a film of power hardening viscoplastic solid [yield stress~(strain-rate)n] is investigated. At short times the growth is exponential and depends on the initial hole size. At long times, for n>1/3, the growth is again exponential but with a different exponent. However, for n<1/3 the hole growth slows and the hole radius approaches an asymptotic value at long times. The rim shape is highly asymmetric, the height of which has a power law dependence on the hole radius (exponent close to unity for 0.25<n<0.4). The above results explain recent intriguing experiments of Reiter [Phys. Rev. Lett., 87, 186 101 (2001)] on dewetting.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to American Physical Society (APS).|
|Department/Centre:||Division of Chemical Sciences > Materials Research Centre|
|Date Deposited:||16 Nov 2004|
|Last Modified:||19 Sep 2010 04:17|
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