All-graphene-based open fluidics for pumpless, small-scale fluid transport via laser-controlled wettability patterning

Simple item page
dc.contributor.authorHall, Lucas S.en
dc.contributor.authorHwang, Dohgyuen
dc.contributor.authorChen, Bolinen
dc.contributor.authorVan Belle, Bryanen
dc.contributor.authorJohnson, Zachary T.en
dc.contributor.authorHondred, John A.en
dc.contributor.authorGomes, Carmen L.en
dc.contributor.authorBartlett, Michael D.en
dc.contributor.authorClaussen, Jonathan C.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2021-02-10T17:21:29Zen
dc.date.available2021-02-10T17:21:29Zen
dc.date.issued2021-01en
dc.description.abstractOpen microfluidics have emerged as a low-cost, pumpless alternative strategy to conventional microfluidics for delivery of fluid for a wide variety of applications including rapid biochemical analysis and medical diagnosis. However, creating openmicrofluidics by tuning the wettability of surfaces typically requires sophisticated cleanroom processes that are unamenable to scalable manufacturing. Herein, we present a simple approach to develop open microfluidic platforms by manipulating the surface wettability of spin-coated graphene ink films on flexible polyethylene terephthalate via laser-controlled patterning. Wedge-shaped hydrophilic tracks surrounded by super-hydrophobic walls are created within the graphene films by scribing micron-sized grooves into the graphene with a CO2 laser. This scribing process is used to make superhydrophobic walls (water contact angle B1608) that delineate hydrophilic tracks (created through an oxygen plasma pretreatment) on the graphene for fluid transport. These allgraphene open microfluidic tracks are capable of transporting liquid droplets with a velocity of 20 mm s(-1) on a level surface and uphill at elevation angles of 78 as well as transporting fluid in bifurcating cross and tree branches. The all-graphene open microfluidic manufacturing technique is rapid and amenable to scalable manufacturing, and consequently offers an alternative pumpless strategy to conventional microfluidics and creates possibilities for diverse applications in fluid transport.en
dc.description.notesJ. C. C. and C. L. G. gratefully acknowledges funding support for this work by the National Science Foundation under award number CBET-17069941, CBET-1756999 and ECCS-1841649 as well as by the National Institute of Food and Agriculture, U.S. Department of Agriculture, under award number 2016-6702125038 and 2020-04109. M. D. B. gratefully acknowledges funding support through a 3M Non-Tenured Faculty Award.en
dc.description.sponsorshipNational Science FoundationNational Science Foundation (NSF) [CBET-17069941, CBET-1756999, ECCS-1841649]; National Institute of Food and Agriculture, U.S. Department of AgricultureUnited States Department of Agriculture (USDA) [2016-6702125038, 2020-04109]; 3M Non-Tenured Faculty Award3Men
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1039/d0nh00376jen
dc.identifier.eissn2055-6764en
dc.identifier.issn2055-6756en
dc.identifier.issue1en
dc.identifier.pmid33165477en
dc.identifier.urihttp://hdl.handle.net/10919/102329en
dc.identifier.volume6en
dc.language.isoenen
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.titleAll-graphene-based open fluidics for pumpless, small-scale fluid transport via laser-controlled wettability patterningen
dc.title.serialNanoscale Horizonsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
d0nh00376j.pdf
Size:
3.66 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Scholarly Works, Mechanical Engineering