Sökning: "In situ characterisation"

Visar resultat 1 - 5 av 62 avhandlingar innehållade orden In situ characterisation.

1. 1. Microsensors for in situ electron microscopy applications

   Författare :Alexandra Nafari; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; capacitive read-out; Microsensors; In situ TEM; TEM-AFM; TEM-Nanoindenter; AFM; nanoscale characterisation; MEMS; Nanoindentation; piezoresistive read-out;

   Sammanfattning : With the ongoing miniaturisation of devices, the interest in characterising nanoscale physical properties has strongly increased. To further advance the field of nanotechnology new scientific tools are required. LÄS MER

3. 2. Further characterisation and applications of the diffusive gradients in thin films technique : In situ measurements of anions and cations in environmental waters

   Författare :Helene Österlund; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

   Sammanfattning : As both the toxicity and the mobility of trace elements are related to chemical forms present, robust methods for element speciation analysis are of great interest. During the last 15 years, hundreds of scientific articles have been published on the development and applications of the diffusive gradients in thin films (DGT) passive sampling technique. LÄS MER

4. 3. Fundamental in-situ and ex-situ studies of energy storage related materials including different applications of voltammetry

   Författare :Ulrik Palmqvist; Patrice Millet; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ni-Cd pocket plate batteries; b-Ni OH 2; b-NiOOH; failures; goethite; surface complexation; Pb II ; Zn II ; Cu II ; Cd II ; in-situ; carbon; nanostructured; voltammetry; X-ray diffraction; electrical test; potentiometry; TEM; chlorination; oorganisk kemi; Inorganic Chemistry;

   Sammanfattning : This thesis is a summary and discussion of eight papers dealing with failures and structural aspects of Ni-Cd industrial pocket plate batteries, applications of voltammetry in adsorption studies on goethite (a-FeOOH) surfaces and synthesis and characterisation of nanostructured carbons. The work consists of different areas of chemistry; electrochemistry, structural chemistry and solution chemistry. LÄS MER

5. 4. Operando Characterisation of Lithium–Sulfur Batteries

   Författare :Yu-Chuan Chien; Daniel Brandell; Matthew Lacey; Paul Shearing; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lithium–sulfur batteries; operando characterisation; intermittent current interruption; X-ray diffraction; small-angle scattering; electrochemical impedance spectroscopy; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

   Sammanfattning : Lithium–sulfur (Li–S) batteries have been under the spotlight of research on electrochemical energy storage systems, primarily owing to their high theoretical specific energy (2552 Wh kg-1). So far, Li–S cells on the market have presented a specific energy of 400 Wh kg-1, which is superior to many commercial alternatives, but far below the theoretical value. LÄS MER

7. 5. Development of Novel In Situ ESEM Techniques for the Study of Water Interaction with Soft Materials

   Författare :Anna Jansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; environmental scanning electron microscopy; cellulose fibre; water transport; swelling; osmotic shock; yeast cell; in situ; manipulator; water interaction;

   Sammanfattning : The transport of water is central to many applications of soft biomaterials; for example water management in personal care products, controlled drug release in pharmaceuticals and, on a fundamental level, the activities of living cells. Water transport through a material may occur in both liquid and gas phase, and is highly dependent on the microstructure. LÄS MER