Sökning: "atomic force microscopy"
Visar resultat 6 - 10 av 263 avhandlingar innehållade orden atomic force microscopy.
6. Reconstructing force from harmonic motion
Sammanfattning : High-quality factor oscillators are often used in measurements of verysmall force since they exhibit an enhanced sensitivity in the narrow frequencyband around resonance. Forces containing frequencies outside this frequencyband are often not detectable and the total force acting on the oscillatorremains unknown. LÄS MER
7. Adsorption at the Solid-Liquid Interface: An Atomic Force Microscopy Study
Sammanfattning : The aim of the work presented in this thesis was to investigate nature of adsorption of amphiphiles to the solid–liquid interface. The surface aggregate structures of the zwitterionic surfactant dodecyldimethylammoniopropanesulfonate, (DDAPS) and a series of nonionic polyoxyethlylene glycol alkyl ethers (C10E5, C12E5, C12E8, C10E6, C14E6 and C16E6) have been determined by Atomic Force Microscopy on solids of different hydrophobicity. LÄS MER
8. Nanocellulose and Its Biohybrids for Water Purification : Atomic Force Microscopy as a Tool to Probe Surface Properties and Interactions
Sammanfattning : Nanocellulose has been explored extensively in recent years as an adsorbent due to its promising performance in the removal of charged contaminants from water. In this thesis, various atomic force microscopy (AFM) techniques are used to understand the surface characteristics and specific interactions of nanocellulose with water contaminants (heavy metal ions and dyes) and nanoscale entities (Graphene Oxide (GO) and Graphene Oxide nanocolloids (nanoGO)), and explain the mechanisms related to adsorption, metal ion clustering, self-assembly and mechanical reinforcement. LÄS MER
9. Superconducting kinetic inductance devices for nanoscale force sensing
Sammanfattning : In this thesis, we present a force sensor for atomic force microscopy based on cavity optomechanical principles. We explain the function, design, fabrication and characterisation of the force sensor. The mechanical part of the force sensor consists of a cantilever with a very fine tip. LÄS MER
10. Development of Techniques for Characterization, Detection and Protein Profiling of Extracellular Vesicles
Sammanfattning : Nanosized extracellular vesicles (EVs, ∼30-2000 nm) have emerged as important mediators of intercellular communication, offering opportunities for both diagnostics and therapeutics. In particular, small EVs generated from the endolysosomal pathway (∼30-150 nm), referred to as exosomes, have attracted interest as a suitable biomarker for cancer diagnostics and treatment monitoring based on minimally invasive liquid biopsies. LÄS MER