Sökning: "fiber sensor"

Visar resultat 16 - 20 av 26 avhandlingar innehållade orden fiber sensor.

1. 16. New methods for evaluation of tissue creping and the importance of coating, paper and adhesion

   Författare :Jonna Boudreau; Christophe Barbier; Ulf Germgård; Sverker Albertsson; Robert Pelton; Karlstads universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tissue; creping; paper adhesion; Tissue paper; creping; paper adhesion; coating layer; adhesives; Yankee cylinder; crepe structure; wavelength measurements; Chemical Engineering; Kemiteknik;

   Sammanfattning : The creping process and the conditions on the Yankee cylinder dryer are key factors in a tissue paper mill, and they therefore need to be kept under good control in order to maintain a high and uniform quality. To this end it would be valuable to be able to make on-line measurements of Yankee coating thickness as well as the crepe structure of the tissue paper. LÄS MER

3. 17. Fabrication and Characterization of Photonic Crystals, Optical Metamaterials and Plasmonic Devices

   Författare :Jing Wang; Min Qiu; Min Yan; Ping Shum; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photonic crystals; metamaterials; plasmonics; Photonics; Fotonik; SRA - ICT; SRA - Informations- och kommunikationsteknik;

   Sammanfattning :  Nanophotonics is an emerging research field that deals with interaction between light and matter in a sub-micron length scale. Nanophotonic devices have found an increasing number of applications in many areas including optical communication, microscopy, sensing, and solar energy harvesting especially during the past two decades. LÄS MER

4. 18. Multifunctional Waveguide Grating Couplers for Integrated Optics

   Författare :Johan Backlund; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : This thesis describes a novel waveguide component in integrated optics called a multifunctional grating coupler. It couples light in or out of optical waveguides and provides additional optical functions such as beam splitting, arbitrary focusing, polarization sensing, and wavelength separation (wavelength division demultiplexing). LÄS MER

5. 19. Development of Electrochemical Biosensors for Neurochemical Applications

   Författare :Jenny Bergman; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; biosensors; electrochemistry; neurochemistry;

   Sammanfattning : The brain consists of billions of cells, including nerve cells, which have the ability of transforming an incoming electrical signal in to a chemical output by the release of neurotransmitters through a process called exocytosis. Malfunction in neuronal communication has been linked to several conditions including Parkinson’s disease, schizophrenia, ADHD and autism why a better understanding of neuronal communication is of great importance contributing to increased knowledge about these conditions. LÄS MER

7. 20. Hybrid Plasmonic Devices for Optical Communication and Sensing

   Författare :Xu Sun; Lech Wosinski; Laurent Vivien; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fysik; Physics;

   Sammanfattning : Hybrid plasmonic (HP) waveguides, a multi-layer waveguide structure supporting a hybrid mode of surface plasmonics and Si photonics, is a compromise way to integrate plasmonic materials into Si or SOI platforms, which can guide optical waves of sub-wavelength size, and with relative low propagation loss. In this thesis, several HP waveguides and devices are developed for the purposes of optical communications and sensing. LÄS MER