Laser curing of silver-based conductive inks for in situ 3D structural electronics fabrication in stereolithography

Lopes, Amit; Lee, In Hwan; MacDonald, Eric; Quintana, Rolando; Wicker, Ryan B.

doi:10.1016/j.jmatprotec.2014.04.009

Cited by 70 publications

(38 citation statements)

References 9 publications

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“…For example, it is possible to produce conducting feedstock material by impregnating with conducting particles such as carbon black 69 or silver. 70 Thus, it should be possible to fabricate flow cells that have the electrodes fully integrated. The near term benefit of this approach would be that no sealing of the flow cell with the electrode substrate is necessary, hopefully minimising possible solution leakage.…”

Section: Future Perspectives For Additive Manufacture In Electrochemimentioning

confidence: 99%

Additive Manufacturing for Electrochemical (Micro)Fluidic Platforms

2016

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The ability to make electrochemical measurements under controlled fluid flow has many applications in electrochemical analysis, especially at trace levels. With a move to rapid, on-line, small volume measurements and a need to improve measurement performance, there is a requirement to manufacture more complex fluidic systems with controlled internal 3D geometries at low cost. Both precision machining and lithography typically fail to meet these needs. In this article we describe the role of additive manufacturing (AM) for the fabrication of (micro)fluidic electrochemical flow systems. We show how AM has advanced device manufacture in these areas compared to the more traditional approaches. Different AM methods are also discussed with respect to their capabilities and advantages. A selection of current AM electrochemical flow cell applications are highlighted and future perspectives discussed.

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Section: Future Perspectives For Additive Manufacture In Electrochemimentioning

confidence: 99%

Additive Manufacturing for Electrochemical (Micro)Fluidic Platforms

2016

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“…Lopes et al (2012) used hybrid additive manufacturing (SL and direct writing/printing) for embedded electronic circuits using a silver-based ink. Lopes et al (2014) investigated the wavelength of laser curing on conductive ink traces using the 250/50 SL machine. The experiments were performed using two laser wavelengths, several inks and different scanning dynamics to determine the optimal laser curing parameters.…”

Section: Introductionmentioning

confidence: 99%

“…The 325 nm wavelength had better volumetric ink curing than the 355 nm, but the 355 nm wavelength has a longer lifecycle. Thus, the research recommended using the 355 nm with post oven curing (Lopes et al, 2014). Roberson et al (2012) used ohmic curing for conductive silver traces.…”

Section: Introductionmentioning

confidence: 99%

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Investigating Sintering Mechanisms for Additive Manufacturing of Conductive Traces

McKenzie¹,

Desai²

2018

American Journal of Engineering and Applied Sciences

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Additive Manufacturing (AM) processes enable the fabrication of miniaturized and flexible devices on complex geometries. This paper explores a hybrid additive manufacturing technology that integrates micro-extrusion and PICO-jetting methods. Conductive slurries and colloidal inks were optimized for their rheological properties to aid their precise deposition. A variety of conductive materials which include carbon, silver, nano-particle silver and nickel were deposited on both rigid (glass) and flexible (Kapton) substrates. The deposited traces were cured using two sintering mechanisms which include furnace heating and in situ laser irradiation. The effect of curing mechanism on the conductance of deposited traces was evaluated. The results indicated that traces could be cured successfully with the laser curing mechanism. Nickel and silver laser cured traces had lower resistivity than the furnace sintered traces. An increase in the laser power resulted in lower resistivity of the traces. The lowest resistivity was achieved at 40W laser power with a single laser pass. Scanning electron microscopy and energy dispersive spectroscopy were used to characterize the trace morphology and elemental compositions. Higher power laser curing resulted in better bonding of the particles. Laser cured samples had minimal oxidation to the cross-section region of the traces as compared to furnace cured samples. This research lays the foundation for the fabrication of electronic components for a high level of freeform 3D electronics using a hybrid additive manufacturing technology.

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“…nano-pastes and screen-printed micro-paste [110][111][112][113]. Compare to the furnace curing, the interaction time of silver paste and laser is short.…”

Section: Laser Curing/sintering/melting Of the Silver Pastementioning

confidence: 99%

Desarrollo de procesos para formación de contactos con láser para módulos thin film CIGS para aplicaciones fotovoltaicas

Chen¹

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Laser curing of silver-based conductive inks for in situ 3D structural electronics fabrication in stereolithography

Cited by 70 publications

References 9 publications

Additive Manufacturing for Electrochemical (Micro)Fluidic Platforms

Additive Manufacturing for Electrochemical (Micro)Fluidic Platforms

Investigating Sintering Mechanisms for Additive Manufacturing of Conductive Traces

Desarrollo de procesos para formación de contactos con láser para módulos thin film CIGS para aplicaciones fotovoltaicas

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