Search for dissertations about: "Optical manipulation"

Showing result 21 - 25 of 56 swedish dissertations containing the words Optical manipulation.

  2. 21. Bioparticle Manipulation using Acoustophoresis and Inertial Microfluidics

    Author : Muhammad Asim Faridi; Aman Russom; Martin Wiklund; Jonas Tegenfeldt; KTH; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biotechnology; Bioteknologi;

    Abstract : Despite the many promising advances made in microfluidics, sample preparation remains the single largest challenge and bottleneck in the field of miniaturised diagnostics. This thesis is focused on the development of sample preparation methods using active and passive particle manipulation techniques for point of care diagnostic applications. READ MORE

  4. 22. Multidimensional Ultrasonic Standing Wave Manipulation in Microfluidic Chips

    Author : Otto Manneberg; Hans M. Hertz; Martin Wiklund; Jürg Dual; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biological physics; Biologisk fysik;

    Abstract : The use of ultrasonic standing waves for contactless manipulation of microparticles in microfluidic systems is a field with potential to become a new standard tool in lab-on-chip systems. Compared to other contactless manipulation methods ultrasonic standing wave manipulation shows promises of gentle cell handling, low cost, and precise temperature control. READ MORE

  5. 23. Surface characterization and manipulation of polyampholytic hydrogel coatings

    Author : Feng-I Tai; Thomas Ederth; Bo Liedberg; Lei Ye; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Hydrogels; antifouling; charge-balanced material; polyampholytes; force measurements; polymer swelling; protein adsorption; patterning; plasmonics;

    Abstract : This thesis is dedicated to building up fundamental knowledge about polyampholytic hydrogels, which are developed in our group for anti-fouling purposes. Charge-balanced polymers, where positive and negative charges balance each other, have emerged as interesting candidates for many applications in materials science. READ MORE

  6. 24. Advanced methods for the calibration of optical tweezers

    Author : Laura Pérez García; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optiska pincetter; kalibrera; probabilistiska metoder; bayesiansk inferens; styvhet; diffusionskoefficient;

    Abstract : Optiska pincetter har sedan Arthur Ashkin och hans kollegors uppfinning på 1980-talet möjliggjort noggrann manipulation av mikroskopiska partiklar. Denna teknik har haft betydande inverkan inom flera områden, inklusive biologi, fysik, nanoteknik, spektroskopi, mjuka material och nanotermodynamik. READ MORE

  7. 25. Microstructural manipulation by laser irradiation of prepared samples : The ’Snapshot Method’

    Author : Stephanie Robertson; Alexander F.H. Kaplan; Fredrik Sikström; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Produktionsutveckling; Manufacturing Systems Engineering;

    Abstract : Various metallurgical microstructures and their formation are studied in this thesis by using a laser beam to melt a variety of materials with different chemical compositions over a range of thermal cycles. The laser beam was used conventionally in a narrow gap multi-layer weld, used for welding large depths with filler wire additions, as well as a non-traditional simulated welding approach labelled here as the Snapshot method. READ MORE