Sökning: "Vibrational micro spectroscopy"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Vibrational micro spectroscopy.

1. 1. Micro-galvanic effects and corrosion inhibition of copper-zinc alloys

   Författare :Mattias Forslund; Jinshan Pan; Christofer Leygraf; Per Claesson; Jin Ying; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Copper; zinc; brass; octadecanethiol; IR Spectroscopy; AFM; atmospheric corrosion; aqueous corrosion; corrosion inhibition; Koppar; zink; mässing; oktadekantiol; IR-reflektions absorptionsspektroskopi; AFM; atmosfärisk korrosion; vattenaktig korrosion; korrosionsinhibering.; Chemical Engineering; Kemiteknik; Kemi; Chemistry;

   Sammanfattning :    With the advancement and accessibility of local probing techniques that can operate at the submicron scale it has become possible to analyse the local corrosion properties of industrially important metallic materials and relate these properties to microstructure characteristics of the same materials. In this doctoral study the focus has been on copper-zinc samples, both as industrial brass alloys and as micro-patterned copper-zinc samples. LÄS MER

3. 2. The Colours of Diabetes : advances and novel applications of molecular optical techniques for studies of the pancreas

   Författare :Christoffer Nord; Ulf Ahlgren; Ian Smyth; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Optical projection tomography; Technique development; Near-infrared; 3D visualization; Biomedical imaging; ß-cell mass; Diabetes; Vibrational micro spectroscopy;

   Sammanfattning : Diabetes is a rapidly increasing health problem. In a global perspective,approximately 415 million people suffered from diabetes in 2015 and this number ispredicted to increase to 640 million by 2040. To tackle this pandemic there is a needfor better analytical tools by which we can increase our understanding of the disease. LÄS MER

4. 3. Modification of microcapsules for controlled release

   Författare :Markus Andersson Trojer; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; block copolymer; coordination chemistry; polyelectrolyte multilayer; cross-linking; vibrational spectroscopy; electron paramagnetic resonance; imidazole; controlled release; colloidal stability; Microcapsule; quartz crystal microbalance with dissipation;

   Sammanfattning : Fouling of marine organisms such as algae and barnacles on the boat hull is an enormous problem for the shipping industry. The negative consequences for the society are both economical and environmental. To prevent fouling in general, biocides are typically incorporated directly into the paint. LÄS MER

5. 4. Novel Materials for Fuel Cells and Batteries Light Scattering Studies of the Structure and Dynamics of Polymer Electrolytes

   Författare :Hanna Ericson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; proton conducting polymer; Raman spectroscopy; gel electrolyte; photon correlation spectroscopy; fuel cell membrane; polymer electrolyte;

   Sammanfattning : The development of new materials and technologies for electrochemical energy conversion and storage, such as fuel cells and batteries, is important for a future more efficient use of energy. Polymer electrolytes are key components in polymer electrolyte fuel cells and lithium-based batteries. LÄS MER

7. 5. Optical and Raman Spectroscopic Studies on H2O at High Pressure

   Författare :Sara Nanna Kristina Sundberg; Peter Lazor; Oleg Kuskov; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; H2O; diamond anvil cell; equations of state; Raman spectroscopy; interferometry; Geovetenskap; Earth sciences; Geovetenskap;

   Sammanfattning : In this thesis, volumetric, optical and vibrational properties of H2O were studied at high pressures by combining techniques of Raman spectroscopy, interferometry and optical imaging. Pressures up to 7 GPa were generated in the diamond anvil cell (DAC), entering the stability fields of liquid water and ices VI, VII and VIII. LÄS MER