Experimental study of critical casimir forces on microparticles in critical binary liquid mixtures

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buir.advisorVolpe, Giovanni
dc.contributor.authorTuna, Yazgan
dc.date.accessioned2016-01-08T18:28:15Z
dc.date.available2016-01-08T18:28:15Z
dc.date.issued2014
dc.departmentGraduate Program in Materials Science and Nanotechnologyen_US
dc.descriptionAnkara : The Department of Material Science and Nanotechnology Program of The Graduate School of Engineering and Science of Bilkent University, 2014.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 2014.en_US
dc.descriptionIncludes bibliographical references leaves 41-48.en_US
dc.description.abstractLong-ranged forces between mesoscopic objects emerge when a fluctuating field is confined. Analogously to the well known quantum-electro-dynamical (QED) Casimir forces, emerging between conducting objects due to the confinement of the vacuum electromagnetic fluctuations, critical Casimir forces emerge between objects due to confinement of the fluid density fluctuations. Here, we studied experimentally several novel aspects and applications of critical Casimir fluctuations in a critical mixture of walter-2,6-lutidine, which are a promising candidate to harness forces and interactions at mesoscopic and nanoscopic lengthscales and promise to deliver results of both fundamental and applied interest. In particular, we studied the critical Casimir forces between multiple objects and multiple-body effects. We first extended the experimental study of critical Casimir forces in configurations different from the particle-wall system[1]. The forces acting between two particles in far from any surface and the third particle effect were explored. Then we employed multiple reconfigurable holographic optical tweezers (HOTs) which permit to optically trap several colloids and used a technique known as ”digital video microscopy” (DVM) to track the particles’ trajectories and the forces acting on the particles. We studied the critical Casimir force arising between two particles as a function of their distance and investigated how this is affected by the presence of a third neighboring particle.en_US
dc.description.degreeM.S.en_US
dc.description.statementofresponsibilityTuna, Yazganen_US
dc.format.extentxiii, 53 leaves, graphicsen_US
dc.identifier.urihttp://hdl.handle.net/11693/15993
dc.language.isoEnglishen_US
dc.publisherBilkent Universityen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCritical Fluctuationsen_US
dc.subjectCritical Casimir Forcesen_US
dc.subjectQuantum-electrodynamical Casimir Forcesen_US
dc.subjectForce Measurementen_US
dc.subjectOptical Tweezersen_US
dc.subjectPhotonic Force Microscopyen_US
dc.subjectDigital Video Microscopyen_US
dc.subject.lccQC680 .T85 2014en_US
dc.subject.lcshCasimir effect.en_US
dc.subject.lcshCritical phenomena (Physics).en_US
dc.subject.lcshQuantum theory.en_US
dc.titleExperimental study of critical casimir forces on microparticles in critical binary liquid mixturesen_US
dc.typeThesisen_US

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Graduate Program in Materials Science and Nanotechnology - Master's degree