• International Journal of Extreme Manufacturing
  • Vol. 3, Issue 3, 35103 (2021)
Shun Zhang1, Hongyu Luo1, Suhao Wang1, Zhou Chen1, Shuang Nie1, Changying Liu1, and Jizhou Song1、2、*
Author Affiliations
  • 1Department of Engineering Mechanics, Soft Matter Research Center, and Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Hangzhou 310027, People’s Republic of China
  • 2State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, People’s Republic of China
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    DOI: 10.1088/2631-7990/abff69 Cite this Article
    Shun Zhang, Hongyu Luo, Suhao Wang, Zhou Chen, Shuang Nie, Changying Liu, Jizhou Song. A thermal actuated switchable dry adhesive with high reversibility for transfer printing[J]. International Journal of Extreme Manufacturing, 2021, 3(3): 35103 Copy Citation Text show less

    Abstract

    Transfer printing based on switchable adhesive that heterogeneously integrates materials is essential to develop novel electronic systems, such as flexible electronics and micro LED displays. Here, we report a robust design of a thermal actuated switchable dry adhesive, which features a stiff sphere embedded in a thermally responsive shape memory polymer (SMP) substrate and encapsulated by an elastomeric membrane. This construct bypasses the unfavorable micro- and nano-fabrication processes and yields an adhesion switchability of over 1000 by combining the peel-rate dependent effect of the elastomeric membrane and the thermal actuation of the sub-surface embedded stiff sphere. Experimental and numerical studies reveal the underlying thermal actuated mechanism and provide insights into the design and operation of the switchable adhesive. Demonstrations of this concept in stamps for transfer printing of fragile objects, such as silicon wafers, silicon chips, and inorganic micro-LED chips, onto challenging non-adhesive surfaces illustrate its potential in heterogeneous material integration applications, such as flexible electronics manufacturing and deterministic assembly. Supplementary material for this article is available online.
    Shun Zhang, Hongyu Luo, Suhao Wang, Zhou Chen, Shuang Nie, Changying Liu, Jizhou Song. A thermal actuated switchable dry adhesive with high reversibility for transfer printing[J]. International Journal of Extreme Manufacturing, 2021, 3(3): 35103
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