000154520 001__ 154520
000154520 005__ 20240619083459.0
000154520 0247_ $$2Handle$$a2128/7921
000154520 037__ $$aFZJ-2014-03834
000154520 041__ $$aEnglish
000154520 1001_ $$0P:(DE-Juel1)144600$$aAfanasenkau, Dzmitry$$b0$$eCorresponding Author$$ufzj
000154520 1112_ $$aThe 11th International Meeting on Thermodiffusion$$cBayonne$$d2014-06-02 - 2014-06-06$$gIMT11$$wFrance
000154520 245__ $$aThermodiffusion of latex beads studied with a microfluidic cell
000154520 260__ $$c2014
000154520 3367_ $$0PUB:(DE-HGF)24$$2PUB:(DE-HGF)$$aPoster$$bposter$$mposter$$s154520
000154520 3367_ $$033$$2EndNote$$aConference Paper
000154520 3367_ $$2DataCite$$aOutput Types/Conference Poster
000154520 3367_ $$2DRIVER$$aconferenceObject
000154520 3367_ $$2ORCID$$aCONFERENCE_POSTER
000154520 3367_ $$2BibTeX$$aINPROCEEDINGS
000154520 520__ $$aInvestigation of the thermodiffusion requires relatively high temperature gradients. The temperature difference at the same time should be small enough because of the temperature dependence of the effect. This can be achieved by reducing the dimensions of the system. Therefore we developed a microfluidic cell which allows us to observe thermophoresis of colloids in the solution. Unlike many existing optical methods our cell is suitable to study big colloids (up to several micrometers) and complex mixtures. The cell can be also applied for investigation of thermophoretic phenomena in biological systems such as living cell and lipid membranes.Our cell consist of three channels (fig 1A): two relatively big ones for providing high flow rate of hot and cold liquid and a small channel in between them which contains the sample to study. The cell is produced either of PDMS by molding on lithographically made Si/SU-8 master or by micromilling the Plexiglas block with a CNC machine. The central channel is made very flat to prevent convection.To characterize the temperature distribution in our cell we used FLIM [1] with Rhodamine B as a temperature sensitive dye. The temperature distribution in the central channel is shown in fig 1B. The temperature difference across the central channel appeared to be around 2°C (the temperature gradient equals 2•104 K/m) although the temperature difference in the cooling and heating channels was much higher (22°C and 47°C respectively) which indicates large temperature drop in the walls.The cell was applied to investigate thermodiffusion of latex microbeads (sulfate modified, 0.5um) in water. The resulting exponential distribution in equilibrium (fig 1C) could be analyzed according to Zhao et al [2]. In order to validate our new method we perform additional measurements with the Thermal Diffusion Forced Rayleigh Scattering setup. Results will be discussed.
000154520 536__ $$0G:(DE-HGF)POF2-451$$a451 - Soft Matter Composites (POF2-451)$$cPOF2-451$$fPOF II$$x0
000154520 7001_ $$0P:(DE-Juel1)131034$$aWiegand, Simone$$b1$$ufzj
000154520 773__ $$y2014
000154520 8564_ $$uhttps://juser.fz-juelich.de/record/154520/files/FZJ-2014-03834.pdf$$yOpenAccess
000154520 8564_ $$uhttps://juser.fz-juelich.de/record/154520/files/FZJ-2014-03834.jpg?subformat=icon-144$$xicon-144$$yOpenAccess
000154520 8564_ $$uhttps://juser.fz-juelich.de/record/154520/files/FZJ-2014-03834.jpg?subformat=icon-180$$xicon-180$$yOpenAccess
000154520 8564_ $$uhttps://juser.fz-juelich.de/record/154520/files/FZJ-2014-03834.jpg?subformat=icon-640$$xicon-640$$yOpenAccess
000154520 909CO $$ooai:juser.fz-juelich.de:154520$$pdriver$$pVDB$$popen_access$$popenaire
000154520 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)144600$$aForschungszentrum Jülich GmbH$$b0$$kFZJ
000154520 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)131034$$aForschungszentrum Jülich GmbH$$b1$$kFZJ
000154520 9132_ $$0G:(DE-HGF)POF3-551$$1G:(DE-HGF)POF3-550$$2G:(DE-HGF)POF3-500$$aDE-HGF$$bKey Technologies$$lBioSoft  Fundamentals for future Technologies in the fields of Soft Matter and Life Sciences$$vFunctional Macromolecules and Complexes$$x0
000154520 9131_ $$0G:(DE-HGF)POF2-451$$1G:(DE-HGF)POF2-450$$2G:(DE-HGF)POF2-400$$3G:(DE-HGF)POF2$$4G:(DE-HGF)POF$$aDE-HGF$$bSchlüsseltechnologien$$lBioSoft$$vSoft Matter Composites$$x0
000154520 9141_ $$y2014
000154520 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000154520 920__ $$lyes
000154520 9201_ $$0I:(DE-Juel1)ICS-3-20110106$$kICS-3$$lWeiche Materie $$x0
000154520 9801_ $$aFullTexts
000154520 980__ $$aposter
000154520 980__ $$aVDB
000154520 980__ $$aUNRESTRICTED
000154520 980__ $$aFullTexts
000154520 980__ $$aI:(DE-Juel1)ICS-3-20110106