Laser printing of multi-layered polymer/metal heterostructures for electronic and MEMS devices

Birnbaum, Andrew J.; Kim, Heung Soo; Charipar, Nicholas A.; Piqué, Alberto

doi:10.1007/s00339-010-5743-8

Cited by 42 publications

(19 citation statements)

References 14 publications

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“…[7][8][9][10] However, such thermally induced ejections can lead to pyrolytic damage in certain ink materials. 11 By utilizing DRL that undergo low-temperature vaporization, such as triazene polymer, 12,13 nanoparticle films, 14 or functional release layers, 15 this thermal damage can be mitigated. However, the ink is still directly exposed to the gaseous decomposition products, which may lead to further contamination issues.…”

Section: Introductionmentioning

confidence: 99%

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

2011

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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.

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Section: Introductionmentioning

confidence: 99%

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

2011

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“…The dimensions of the final products dictate the procedure used to make the sensor prototype. Photolithography [33], screen-printing [34], inkjet printing [35], laser cutting [36] are some of the common ones. The raw materials used in developing these sensors depend on the applications for which the properties of the material vary.…”

Section: Materials For Wearable Flexible Sensorsmentioning

confidence: 99%

Wearable Flexible Sensors: A Review

2017

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Abstract-The paper provides a review on some of the significant research work done on wearable flexible sensors (WFS). Sensors fabricated with flexible materials have been attached to a person along with the embedded system to monitor a parameter and transfer the significant data to the monitoring unit for further analyses. The use of wearable sensors has played a quite important role to monitor physiological parameters of a person to minimize any malfunctioning happening in the body. The paper categorizes the work according to the materials used for designing the system, the network protocols and different types of activities that were being monitored. The challenges faced by the current sensing systems and future opportunities for the wearable flexible sensors regarding its market values are also briefly explained in the paper.

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“…That is because with LDT, once the laser beam is apertured and imaged onto a donor substrate, the transferred voxel on the receiving substrate retains the exact shape of the aperture as shown in Figure 1 The high degree of control in size and shape achievable with LDT has been applied to the digital microfabrication of 3-dimensional stacked assemblies and freestanding structures such as microbridges and microcantilevers without the use of sacrificial layers. [12][13][14][15] LDT has also demonstrated the ability to print freestanding structures such as the interconnects between a device and associated circuit, in the same way that it is currently achieved using wire bonding, but occupying much less volume. 16 Another advantage of the LDT technique is the generation of membranes capable of fully covering cavities on a substrate without the need for leaving channels in the cavity to introduce etchants and remove their byproducts.…”

Section: Introductionmentioning

confidence: 96%

Realization of metamaterial structures by non-lithographic processes

et al. 2012

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The opportunities presented by the use of metamaterials have been the subject of extensive discussions. However, a large fraction of the work available to date has been limited to simulations and proof-of-principle demonstrations. One reason for the limited success inserting these structures into functioning systems and real-world applications is the high level of complexity involved in their fabrication. Most approaches to the realization of metamaterial structures utilize traditional lithographic processing techniques to pattern the required geometries and then rely on separate steps to assemble the final design. Obviously, composite structures with arbitrary and/or 3-D geometries present a challenge for their implementation with these approaches. Non-lithographic processes are ideally suited for the fabrication of arbitrary periodic and aperiodic structures needed to implement many of the metamaterial designs being proposed. Furthermore, non-lithographic techniques are true enablers for the development of conformal or 3-D metamaterial designs. This article will show examples of metamaterial structures developed at the Naval Research Laboratory using non-lithographic processes. These processes have been applied successfully to the fabrication of complex 2-D and 3-D structures comprising different types of materials.

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Laser printing of multi-layered polymer/metal heterostructures for electronic and MEMS devices

Cited by 42 publications

References 14 publications

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

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

Wearable Flexible Sensors: A Review

Realization of metamaterial structures by non-lithographic processes

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