Sökning: "optical tweezers"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden optical tweezers.

  1. 1. Constructing an optical tweezers instrumentation and evaluation of trapping stiffness using the power spectrum method

    Kandidat-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Haoxiang Yang; [2022]
    Nyckelord :;

    Sammanfattning : Optical tweezers can trap micron-sized objects such as cells, bacteria, and microspheres, and has become an important instrument for measuring forces associated with various physical and biological phenomena. In this thesis work, I constructed an optical tweezers instrument to trap 2µm diameter beads using a HeNe-laser operating with a wavelength of 632. LÄS MER

  3. 2. Development of Next-Generation Optical Tweezers : The New Swiss Army Knife of Biophysical and Biomechanical Research

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Daniel Nilsson; [2020]
    Nyckelord :optical tweezers; optical fiber tweezers; optical fiber; optical trapping; manipulation; optical force; cell trapping; biophysical; physicochemical; biomechanical; research; next-generation; raman spectroscopy; holographic optical tweezers;

    Sammanfattning : In a time when microorganisms are controlling the world, research in biology is more relevant than ever and this requires some powerful instruments. Optical tweezers use a focused laser beam to manipulate and probe objects on the nano- and microscale. LÄS MER

  4. 3. Optical forces from dielectric slot waveguides on dielectric nanoparticles

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Anton Möller; [2018]
    Nyckelord :;

    Sammanfattning : Trapping and modulating the physical whereabouts of particles are in great interest for numerous areas of applications. Traditionally, this type of control is achieved with free space optical tweezers, but they do present several problems. LÄS MER

  5. 4. Optical Tweezers and Maxwell's Demon

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Författare :Markus Aspegren; [2016]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Future nanoscale applications of Brownian motors will benefit from further development of stochastic thermodynamics, bridging the the properties of systems in non-equilibrium with those in equilibrium. This thesis presents the first step towards a device mimicking Maxwell's demon, which will be used for a study of systems out of equilibrium. LÄS MER

  7. 5. Probing protein - Pili interactions by optical tweezers and 3D molecular modelling

    Master-uppsats, Institutionen för fysik

    Författare :Mariam Shirdel; [2013]
    Nyckelord :Escherichia coli; E. coli; ETEC; pili; CS20; CFA I; optical tweezers; OT; FMOT; histatin 5; Escherichia coli; E. coli; ETEC; pili; CS20; CFA I; optisk pincett; histatin 5;

    Sammanfattning : .... LÄS MER