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Issue 27, 2012
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Thermo-mechanical modeling of laser-driven non-contact transfer printing: two-dimensional analysis

Rui Li,ab  Yuhang Li,bc  Chaofeng Lü,bd  Jizhou Song,e  Reza Saeidpouraza,fg  Bo Fang,c  Yang Zhong,a  Placid M. Ferreira,g  John A. Rogersfg  and  Yonggang Huang*b 
Author affiliations

* Corresponding authors

a State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China

b Dept. of Civil and Environ. Eng. and Mech. Eng., Northwestern University, Evanston, USA
E-mail: y-huang@northwestern.edu

c School of Astronautics, Harbin Institute of Technology, Harbin 150001, China

d Dept. of Civil Eng. and Soft Matter Res. Center, Zhejiang University, Hangzhou 310058, China

e Dept. of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, USA

f Department of Materials Science and Engineering, University of Illinois, Urbana, USA

g Department of Mechanical Science and Engineering, University of Illinois, Urbana, USA

Abstract

Transfer printing is an emerging technique for materials assembly and micro-/nano-fabrication. An important emerging variant of this process involves laser-induced impulsive heating to initiate separation at the interface between a soft, elastomeric stamp and hard micro-/nano-materials (i.e. inks) on its surface, due to a large mismatch in coefficients of thermal expansion. The result is the active ejection of the inks from the stamp to a spatially separated receiving substrate, thereby representing the printing step. In the following, a thermo-mechanical model is established to analytically obtain the temperature field, and the energy release rate for delamination at the interface between the stamp and ink in the form of a rigid plate. The normalized critical laser pulse time for interfacial delamination depends only on the normalized total heat flux at the interface and the normalized width of the ink structure. This scaling law has been verified by experiments and the finite element method.

Graphical abstract: Thermo-mechanical modeling of laser-driven non-contact transfer printing: two-dimensional analysis

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Publication details

The article was received on 15 Feb 2012, accepted on 26 Apr 2012 and first published on 01 Jun 2012


Article type: Paper
DOI: 10.1039/C2SM25339A
Citation: Soft Matter, 2012,8, 7122-7127
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    Thermo-mechanical modeling of laser-driven non-contact transfer printing: two-dimensional analysis

    R. Li, Y. Li, C. Lü, J. Song, R. Saeidpouraza, B. Fang, Y. Zhong, P. M. Ferreira, J. A. Rogers and Y. Huang, Soft Matter, 2012, 8, 7122
    DOI: 10.1039/C2SM25339A

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