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Laser-assisted direct ink writing of planar and 3D metal architectures.

ABSTRACT: The ability to pattern planar and freestanding 3D metallic architectures at the microscale would enable myriad applications, including flexible electronics, displays, sensors, and electrically small antennas. A 3D printing method is introduced that combines direct ink writing with a focused laser that locally anneals printed metallic features "on-the-fly." To optimize the nozzle-to-laser separation distance, the heat transfer along the printed silver wire is modeled as a function of printing speed, laser intensity, and pulse duration. Laser-assisted direct ink writing is used to pattern highly conductive, ductile metallic interconnects, springs, and freestanding spiral architectures on flexible and rigid substrates.

SUBMITTER: Skylar-Scott MA

PROVIDER: S-EPMC4896727 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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Laser-assisted direct ink writing of planar and 3D metal architectures.

Skylar-Scott Mark A MA Gunasekaran Suman S Lewis Jennifer A JA

Proceedings of the National Academy of Sciences of the United States of America 20160516 22

The ability to pattern planar and freestanding 3D metallic architectures at the microscale would enable myriad applications, including flexible electronics, displays, sensors, and electrically small antennas. A 3D printing method is introduced that combines direct ink writing with a focused laser that locally anneals printed metallic features "on-the-fly." To optimize the nozzle-to-laser separation distance, the heat transfer along the printed silver wire is modeled as a function of printing spe ...[more]

PMID: 27185932

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