Sökning: "optical switches"

Visar resultat 21 - 25 av 32 avhandlingar innehållade orden optical switches.

  1. 21. Structure and properties of rf magnetron sputtered (Na,K)NbOx thin films

    Författare :Veronika Mozhdeh Kugler; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Thin films of ferroelectric materials have attracted great interest for various applications, including non-volatile memory, infrared sensors, optical switches, and ultrasonic transducers. The perovskite sodium-potassium niobate is a material that has been known due to its ferroelectric and piezoelectric properties. LÄS MER

  3. 22. Design, Simulation and Characterization of Some Planar Lightwave Circuits

    Författare :Yaocheng Shi; Anand Srinivasan; Sailing He; Daniel Erni; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; planar lightwave circuit; waveguide; coupler; multimode interference; photonic crystal waveguide; de multiplexer; triplexer; polarization beam splitter; dry etching; carrier life time.; Photonics; Fotonik;

    Sammanfattning : Optical devices based on planar lightwave circuit (PLC) technology have the advantages of small size, high reliability, possibility for large scale production, and potential integration with electronics. These devices are widely employed in optical telecommunications, sensing, data storage, imaging, and signal processing. LÄS MER

  4. 23. Automated super-resolution microscopy for high-throughput imaging

    Författare :Xavier Casas Moreno; Ilaria Testa; Florian Jug; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RESOLFT; throughput; microscopy automation; nanoscopy; Biologisk fysik; Biological Physics;

    Sammanfattning : Fluorescence microscopes enable the visualization of biological samples with high contrast by labeling specific structures with fluorescent molecules. However, the spatial resolution of widely used microscopy techniques, such as widefield and confocal microscopy, is limited by the size of a focused spot of light, which roughly corresponds to half the wavelength of the illumination. LÄS MER

  5. 24. Interactions Between Localized Surface Plasmons and Molecular Resonances

    Författare :Gülis Zengin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; single particles; J-aggregates; Rhodamine 6G; Localized surface plasmon resonance; strong coupling; surface-enhanced absorption;

    Sammanfattning : Molecular plasmonics is the study of interactions between plasmonic nanostructures and molecules. It has been basis for fundamental understanding of light-matter interactions and development of many technological applications, such as biological and chemical sensing, plasmon-enhanced spectroscopies, optical switches, and plasmon-enhanced energy harvesting. LÄS MER

  7. 25. On the Surface of Conducting Polymers : Electrochemical Switching of Color and Wettability in Conjugated Polymer Devices

    Författare :Joakim Isaksson; Magnus Berggren; Kajsa Uvdal; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Conjugated polymer; electrochemistry; surface energy; electrochromism; contact angle; Electrochemistry; Elektrokemi;

    Sammanfattning : Since the discovery in 1977 that conjugated polymers can be doped to achieve almost metallic electronic conduction, the research field of conducting polymers has escalated, with applications such as light emitting diodes, solar cells, thin film transistors, electrochemical transistors, logic circuits and sensors. The materials can be chemically modified during their synthesis in order to tailor the desired mechanical, electronic and optical properties of the final product. LÄS MER