Sökning: "Microelectrodes"

Visar resultat 1 - 5 av 24 avhandlingar innehållade ordet Microelectrodes.

1. 1. Conducting Polymers Containing In-Chain Metal Centres : Electropolymerisation and Charge Transport

   Författare :Johan Hjelm; Anders Hagfeldt; Emad Mukhtar; Robert Forster; A. R. Hillman; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; Polymer electrochemistry; Conducting Polymers; Metal Complexes; Electropolymerization; Electron-hopping; Microelectrodes; Fysikalisk kemi; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

   Sammanfattning : Conjugated polymers that exhibit high electronic conductivities play key roles in the emerging field of molecular electronics. In particular, linking metal centres with useful electrochemical, photophysical, or catalytic properties to the backbone, or within the polymer chain itself, is a topic which has attracted a significant amount of interest lately. LÄS MER

3. 2. Diamond Microfabrication for Applications in Optics and Chemical Sensing

   Författare :Pontus Forsberg; Mikael Karlsson; Christoph Nebel; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; diamond; microfabrication; microoptics; coronagraph; waveguide; microelectrodes; superhydrophobic; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

   Sammanfattning : Diamond is a material with many exceptional properties. In this thesis methods for fabrication of microstructures as well as several applications of such structures in optics, microfluidics and electrochemistry are presented.A method for etching deep and highly precise gratings is described. LÄS MER

4. 3. Amperometric biosensor-based microsystems for detecting analytes of biomedical importance

   Författare :Szilveszter Gaspar; Kemiska institutionen; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; microelectrodes; enzyme electrodes; SECM; biomedicine; µTAS; microsystems; biosensors; electrochemical detection; Bioteknik;

   Sammanfattning : Monitoring in the biomedical field is rapidly emerging as the most important application area of miniaturized analytical devices. Diagnostics, disease monitoring, drug development, and medical research are important areas taking full advantage of the short response time, reduced sample consumption, low costs, and reduced power requirements of miniaturized analytical tools. LÄS MER

5. 4. Kinetic investigation of LiMn2O4 for rechargeable lithium batteries

   Författare :Anna-Karin Hjelm; KTH; []
   Nyckelord :linear sweep voltammetry; electrochemical impedance spectroscopy; potential step; in situ X-ray diffraction; microelectrodes; electrode kinetics; LiMn2O4 cathode; rechargeable lithium batteries;

   Sammanfattning : This thesis is concerned with kinetic characterisation of theinsertion compound LiMn2O4, which is used as positive electrodematerial in rechargeable lithium batteries. Three different typesof electrode configurations have been investigated, namely singleparticles, thin films and composite electrodes. Differentelectrochemical techniques, i.e. LÄS MER

7. 5. Salvadora persica (MISWAK) : an effective way of killing oral pathogens

   Författare :Abier Hamed Sofrata; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Miswak; Salvadora persica; chewing stick; traditional medicine; gingivitis; periodontitis; dental plaque; plaque pH; salivary flow; acid production; microelectrodes; oral hygiene; subgingival microbiota; antibacterial agent; isothiocyanate; chromatography; Porphyromonas gingivalis; Aggregatibacter actinomycetemcomitans;

   Sammanfattning : Mechanical removal of dental plaque is regarded as an effective means of controlling the progression of dental caries and periodontal disease. The habitual use of chewing sticks (Miswak) as an oral hygiene method is still wildly spread throughout parts of Asia, Africa, and the Middle East. LÄS MER