Ejected Droplet-Directed Transportation and Self-Alignment of Microfibers to Micro Trenches

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorChang, Bo
dc.contributor.authorFeng, Yu H.
dc.contributor.authorJin, Jia L.
dc.contributor.authorZhou, Quan
dc.contributor.departmentShaanxi University of Science and Technology
dc.contributor.departmentDepartment of Electrical Engineering and Automation
dc.date.accessioned2021-12-01T07:53:12Z
dc.date.available2021-12-01T07:53:12Z
dc.date.issued2021-10
dc.descriptionPublisher Copyright: IEEE
dc.description.abstractMicrofibers are important components in the fabrication of fiber-reinforced materials, and the distribution and alignment of microfibers can affect the mechanical, electrical, and thermal properties of the fiber-reinforced materials. However, it remains a challenge to precisely align and distribute microfibers on a large scale at a high throughput. This paper reports a facile droplet-directed method to transport and self-align microfibers to micro trenches using droplets ejected from a non-contact dispenser. Employing super hydrophilic-super hydrophobic trenches with sizes matching the microfibers, the method can align and transport randomly dispersed fibers around trenches into the trenches as desired. We studied this alignment and transport mechanism and the results suggest that liquid volume is critical to allow the capillary force to be dominant leading to the success of the process. We demonstrated that microfibers having an aspect ratio of 200, a diameter of 15 μm and a length of 3 mm, canreliably self-align to super hydrophilic-super hydrophobic trenches and transport to the target location, achieving linear alignment accuracy of 0.5 μm and angular accuracy of 0.1°. The high accuracy and fast process of the proposed technique may greatly impact larger scale and high throughput construction of complex microstructures using microfibers.en
dc.description.versionPeer revieweden
dc.format.extent8
dc.format.extent751-758
dc.format.mimetypeapplication/pdf
dc.identifier.citationChang , B , Feng , Y H , Jin , J L & Zhou , Q 2021 , ' Ejected Droplet-Directed Transportation and Self-Alignment of Microfibers to Micro Trenches ' , Journal of Microelectromechanical Systems , vol. 30 , no. 5 , pp. 751-758 . https://doi.org/10.1109/JMEMS.2021.3099374en
dc.identifier.doi10.1109/JMEMS.2021.3099374
dc.identifier.issn1057-7157
dc.identifier.issn1941-0158
dc.identifier.otherPURE UUID: f6b94a5a-5931-4a0c-9bae-36e5812c4fca
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/f6b94a5a-5931-4a0c-9bae-36e5812c4fca
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85112602073&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/76082785/ELEC_Chang_etal_Ejected_Droplet_Directed_Transportation_and_Self_alignment_IEEE_JMEMS_2021.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/111405
dc.identifier.urnURN:NBN:fi:aalto-2021120110555
dc.language.isoenen
dc.publisherIEEE
dc.relation.ispartofseriesJournal of Microelectromechanical Systemsen
dc.relation.ispartofseriesVolume 30, issue 5en
dc.rightsopenAccessen
dc.subject.keywordCapillary self-alignment
dc.subject.keywordForce
dc.subject.keywordFriction
dc.subject.keywordLiquids
dc.subject.keywordmicro manipulation
dc.subject.keywordmicroassembly
dc.subject.keywordmicrofibers
dc.subject.keywordSubstrates
dc.subject.keywordsuper hydrophilic-super hydrophobic patterned surfaces.
dc.subject.keywordSurface morphology
dc.subject.keywordTorque
dc.subject.keywordTransportation
dc.titleEjected Droplet-Directed Transportation and Self-Alignment of Microfibers to Micro Trenchesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionacceptedVersion
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