A comparative study of Ni75Fe25 microcomponents fabricated by microelectroforming and micromolding

Zhou, Bo; Su, Bo; Li, Min; Zhang, Aijun; Han, Jiesheng

doi:10.1016/j.jmatprotec.2020.116997

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…Employing elastic polydimethylsiloxane (PDMS) molds created through soft lithography as microelectroforming molds effectively overcomes the limitations associated with photoresist molds. The PDMS molds can be readily replicated from microstructured masters by soft lithography, offering a cost-effective alternative [26][27][28]. In our previous work, we have achieved the fabrication of metallic microstructures utilizing the microelectroforming method with a silver (Ag)coated PDMS mold.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of high-aspect-ratio metallic microstructures by microelectroforming using silver-coated polydimethylsiloxane molds with controllable wettability

Zhou,

Xie,

Wang

et al. 2024

J. Micromech. Microeng.

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Microelectroforming is a specialized electroplating process to prepare functional metallic microstructures. However, the formability of microelectroforming is usually restricted by the limited mass transfer in high-aspect-ratio microcavities of molds. This paper presents a simple and reliable method utilizing silver (Ag)-coated polydimethylsiloxane (PDMS) molds with controllable wettability to enhance the formability of microelectroforming. The surfaces of these molds exhibited reversible water contact angles ranging from 4° to 151° realized through ultraviolet irradiation and heat treatment. The hydrophilicity of the PDMS molds facilitated liquid-phase mass transfer, contributing to the fabrication of complete and defect-free nickel microstructures with high aspect ratios. Subsequently, the hydrophobic PDMS molds reduced the interfacial adhesion between these molds and nickel microstructures, which was beneficial for perfect demolding. Nickel microstructures with an aspect ratio of 10 can be achieved by using the PDMS molds, which significantly enhance the formability of microelectroforming. This method provides a potential method to prepare high-aspect-ratio metallic microstructures.

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Section: Introductionmentioning

confidence: 99%