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Finite element analysis of blister formation in laser-induced forward transfer
 

Summary: ARTICLES
Finite element analysis of blister formation in laser-induced
forward transfer
Nicholas T. Kattamis, Matthew S. Brown, and Craig B. Arnolda)
Department of Mechanical and Aerospace Engineering, Princeton Institute for the Science and
Technology of Materials, Princeton University, Princeton, New Jersey 08544
(Received 16 January 2011; accepted 21 June 2011)
Blister-actuated laser-induced forward transfer (BA-LIFT) is a direct-write technique, which
enables high-resolution printing of sensitive inks for electronic or biological applications. During
BA-LIFT, a polymer laser-absorbing layer deforms into an enclosed blister and ejects ink from an
adjacent donor film. In this work, we develop a finite element model to replicate and predict blister
expansion dynamics during BA-LIFT. Model inputs consist of standard mechanical properties,
strain-rate-dependent material parameters, and a parameter encapsulating the thermal and optical
properties of the film. We present methods to determine these material parameters from
experimental measurements. The simulated expansion dynamics are shown to be in good
agreement with experimental measurements using two different polymer layer thicknesses. Finally,
the ability to model high-fluence blister rupture is demonstrated through a strain-based failure
approach.
I. INTRODUCTION
Laser-inducedforwardtransfer(LIFT)isahigh-resolution

  

Source: Arnold, Craig B. - Department of Mechanical and Aerospace Engineering, Princeton University

 

Collections: Engineering; Materials Science