Journal
SOFT MATTER
Volume 8, Issue 2, Pages 418-423Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sm06483e
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Funding
- National Natural Science Foundation of China [10902059, 90816007, 10820101048, 10832005]
- Foundation for the Author of National Excellent Doctoral Dissertation of China (FANEDD) [2007B30]
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This paper describes the mechanism of the rate-dependent adhesion for a transfer printing system. A cohesive element model accounting for the viscoelastic effect of the stamp reveals the evolution of the stress and the stress distributions as the peeling velocity increases. Experiments using Si ribbons separating from a wafer verify this prediction and demonstrate the influence of the rate-dependent effect on the transfer efficiency. The simulations show the relaxation time of the stamp has little effect on the transfer efficiency, and implies that it can be improved by adjusting the viscoelastic modulus.
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