Sökning: "Microscopy"

Visar resultat 31 - 35 av 2417 avhandlingar innehållade ordet Microscopy.

1. 31. Development of Techniques for Characterization, Detection and Protein Profiling of Extracellular Vesicles

   Författare :Sara Cavallaro; Jan Linnros; Apurba Dev; Hakho Lee; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; extracellular vesicles; streaming current; fluorescence microscopy; atomic force microscopy; scanning electron microscopy; protein profiling; size profiling; Biological and Biomedical Physics; Biologisk och biomedicinsk fysik;

   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

3. 32. Imaging materials with intermodulation : Studies in multifrequency atomic force microscopy

   Författare :Daniel Forchheimer; David Haviland; Arvind Raman; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; atomic force microscopy; nonlinear dynamics; frequency mixing; force reconstruction; Fysik; Physics;

   Sammanfattning : The Atomic Force Microscope (AFM) is a tool for imaging surfaces at the microand nano meter scale. The microscope senses the force acting between a surfaceand a tip positioned at the end of a micro-cantilever, forming an image of the surface topography. LÄS MER

4. 33. Nanostructures Studied by Atomic Force Microscopy : Ion Tracks and Nanotextured Films

   Författare :Judit Kopniczky; Claes-Göran Granqvist; Lars Montelius; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; ion impact; surface tracks; electronic sputtering; WO3; nanoparticle; scanning probe microscopy; tapping mode; Fysik; Physics; Fysik;

   Sammanfattning : The work presented in this thesis concernes two sorts of nanostructures: energetic-ion-impact-induced surface tracks and gas-deposited WO3 nanoparticles. Our aims to characterise these nanostuctures and understand the physical principles behind their formation are of general interests for basic science as well as of the field of nanotechnology. LÄS MER

5. 34. Investigating nano-scale viscous and elastic forces withintermodulation : Studies in multifrequency atomic force microscopy

   Författare :Per-Anders Thorén; David B. Haviland; Greg Haugstad; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atomic Force Microscopy; Nonlinear dynamics; Soft materials; High- speed friction measurements; Modeling and numerical simulations; Fysik; Physics;

   Sammanfattning : Investigating visco-elastic forces at the nanometer-scale is important to thecharacterization of soft materials. A quantitative force measurement can be ob-tained using an atomic force microscope (AFM) with a calibrated force transducer(the AFM cantilever). LÄS MER

7. 35. 3D Electron Microscopy Methods and Applications : Structures from Atomic Scale to Mesoscale

   Författare :Taimin Yang; Xiaodong Zou; Grüne Tim; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 3D Electron microscopy; continuous rotation electron diffraction; structure determination; data quality; electron tomography; mesoporous materials; zeolites; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : The crystal structure determines the physical properties of a material. The structure can be analysed at different levels, from atomic level, mesoscale level, all the way up to the macroscale level. LÄS MER