Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-7437
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dc.contributor.authorNiu, Ran-
dc.contributor.authorKhodorov, Stanislav-
dc.contributor.authorWeber, Julian-
dc.contributor.authorReinmüller, Alexander-
dc.contributor.authorPalberg, Thomas-
dc.date.accessioned2022-07-15T09:52:26Z-
dc.date.available2022-07-15T09:52:26Z-
dc.date.issued2017-
dc.identifier.urihttps://openscience.ub.uni-mainz.de/handle/20.500.12030/7451-
dc.description.abstractMicro-fluidic pumps as well as artificial micro-swimmers are conveniently realized exploiting phoretic solvent flows based on local gradients of temperature, electrolyte concentration or pH. We here present a facile micro-photometric method for monitoring pH gradients and demonstrate its performance and scope on different experimental situations including an electro-osmotic pump and modular micro-swimmers assembled from ion exchange resin beads and polystyrene colloids. In combination with the present microscope and DSLR camera our method offers a 2 μ m spatial resolution at video frame rate over a field of view of 3920 × 2602 μ m 2 . Under optimal conditions we achieve a pH-resolution of 0.05 with about equal contributions from statistical and systematical uncertainties. Our quantitative micro-photometric characterization of pH gradients which develop in time and reach out several mm is anticipated to provide valuable input for reliable modeling and simulations of a large variety of complex flow situations involving pH-gradients including artificial micro-swimmers, microfluidic pumping or even electro-convection.en_GB
dc.description.sponsorshipDFG, Open Access-Publizieren Universität Mainz / Universitätsmedizinde
dc.language.isoengde
dc.rightsCC BY*
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/*
dc.subject.ddc530 Physikde_DE
dc.subject.ddc530 Physicsen_GB
dc.titleLarge scale micro-photometry for high resolution pH-characterization during electro-osmotic pumping and modular micro-swimmingen_GB
dc.typeZeitschriftenaufsatzde
dc.identifier.doihttp://doi.org/10.25358/openscience-7437-
jgu.type.dinitypearticleen_GB
jgu.type.versionPublished versionde
jgu.type.resourceTextde
jgu.organisation.departmentFB 08 Physik, Mathematik u. Informatikde
jgu.organisation.number7940-
jgu.organisation.nameJohannes Gutenberg-Universität Mainz-
jgu.rights.accessrightsopenAccess-
jgu.journal.titleNew journal of physicsde
jgu.journal.volume19de
jgu.journal.issue11de
jgu.pages.alternativeArt. 115014de
jgu.publisher.year2017-
jgu.publisher.nameIOPde
jgu.publisher.placeLondonde
jgu.publisher.urihttp://dx.doi.org/10.1088/1367-2630/aa9545de
jgu.publisher.issn1367-2630de
jgu.organisation.placeMainz-
jgu.subject.ddccode530de
opus.date.modified2017-12-21T10:32:30Z-
opus.subject.dfgcode00-000-
opus.organisation.stringFB 08: Physik, Mathematik und Informatik: Institut für Physikde_DE
opus.identifier.opusid57676-
opus.institute.number0801-
opus.metadataonlyfalse-
opus.type.contenttypeKeinede_DE
opus.type.contenttypeNoneen_EN
opus.affiliatedPalberg, Thomas-
jgu.publisher.doi10.1088/1367-2630/aa9545de
jgu.organisation.rorhttps://ror.org/023b0x485-
Appears in collections:DFG-OA-Publizieren (2012 - 2017)

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