Capillary self-alignment of microchips on soft substrates

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Chang, Bo Zhou, Quan Wu, Zhigang Liu, Zhenhua Ras, Robin H A Hjort, Klas 2017-05-11T09:09:08Z 2017-05-11T09:09:08Z 2016-03-01
dc.identifier.citation Chang , B , Zhou , Q , Wu , Z , Liu , Z , Ras , R H A & Hjort , K 2016 , ' Capillary self-alignment of microchips on soft substrates ' MICROMACHINES , vol 7 , no. 3 , 41 , pp. 1-9 . DOI: 10.3390/mi7030041 en
dc.identifier.issn 2072-666X
dc.identifier.other PURE UUID: d83873ba-c522-4bc9-a207-ecb179d6069e
dc.identifier.other PURE ITEMURL:
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dc.description.abstract Soft micro devices and stretchable electronics have attracted great interest for their potential applications in sensory skins and wearable bio-integrated devices. One of the most important steps in building printed circuits is the alignment of assembled micro objects. Previously, the capillary self-alignment of microchips driven by surface tension effects has been shown to be able to achieve high-throughput and high-precision in the integration of micro parts on rigid hydrophilic/superhydrophobic patterned surfaces. In this paper, the self-alignment of microchips on a patterned soft and stretchable substrate, which consists of hydrophilic pads surrounded by a superhydrophobic polydimethylsiloxane (PDMS) background, is demonstrated for the first time. A simple process has been developed for making superhydrophobic soft surface by replicating nanostructures of black silicon onto a PDMS surface. Different kinds of PDMS have been investigated, and the parameters for fabricating superhydrophobic PDMS have been optimized. A self-alignment strategy has been proposed that can result in reliable self-alignment on a soft PDMS substrate. Our results show that capillary self-alignment has great potential for building soft printed circuits. en
dc.format.extent 1-9
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries MICROMACHINES en
dc.relation.ispartofseries Volume 7, issue 3 en
dc.rights openAccess en
dc.subject.other Electrical and Electronic Engineering en
dc.subject.other Control and Systems Engineering en
dc.subject.other Mechanical Engineering en
dc.subject.other 214 Mechanical engineering en
dc.subject.other 114 Physical sciences en
dc.subject.other 213 Electronic, automation and communications engineering, electronics en
dc.title Capillary self-alignment of microchips on soft substrates en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.contributor.department Department of Electrical Engineering and Automation
dc.contributor.department Uppsala University
dc.contributor.department Huazhong University of Science and Technology
dc.subject.keyword Capillary self-alignment
dc.subject.keyword Hydrophilic/superhydrophobic patterned surfaces
dc.subject.keyword Soft micro devices
dc.subject.keyword Stretchable electronics
dc.subject.keyword Superhydrophobic PDMS
dc.subject.keyword Electrical and Electronic Engineering
dc.subject.keyword Control and Systems Engineering
dc.subject.keyword Mechanical Engineering
dc.subject.keyword 214 Mechanical engineering
dc.subject.keyword 114 Physical sciences
dc.subject.keyword 213 Electronic, automation and communications engineering, electronics
dc.identifier.urn URN:NBN:fi:aalto-201705114267
dc.identifier.doi 10.3390/mi7030041
dc.type.version publishedVersion

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