Search for dissertations about: "resonance absorbers"

Showing result 1 - 5 of 7 swedish dissertations containing the words resonance absorbers.

  1. 1. The use of Textiles in an Acoustic Context

    Author : Karl Tillberg; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; porous absorbers; knitted fabric; woven fabric; helmholtz absorbers; room acoustics; nonwoven material; classroom; acoustic textiles; resonance absorbers; panel absorbers;

    Abstract : Working with textiles in an acoustic context gives enormous possibilities to combine the acoustic function of materials with the visual function (aesthetics). Depending on the material choice and the production techniques, textiles may for instance be flexible, stiff, airtight, have high density or high porosity. READ MORE

  2. 2. Fabrication and Characterization of Plasmonic Nanophotonic Absorbers and Waveguides

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Yiting Chen; KTH.; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanophotonics; plasmonics; fabrication; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : Plasmonics is a promising field of nanophotonics dealing with light interaction with metallic nanostructures. In such material systems, hybridizationof photons and collective free-electron oscillation can result in sub-wavelength light confinement. READ MORE

  3. 3. Electromagnetic Waves in Media with Ferromagnetic Losses

    University dissertation from Stockholm : KTH

    Author : Jörgen Ramprecht; KTH.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Electrical engineering; electronics and photonics Electrophysics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektrofysik;

    Abstract : The operation of a wide variety of applications in today's modern society are heavily dependent on the magnetic properties of ferromagnetic materials and their interaction with electromagnetic fields.The understanding of these interactions and the associated loss mechanisms is therefore crucial for the improvement and future development of such applications. READ MORE

  4. 4. Innovative noise control in ducts

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Maaz Farooqui; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Locally resonant materials; slow sound; acoustic impedance; metallic foam; low frequency noise; mufflers; lined ducts; grazing flow; flow duct; impedance eduction.; Farkostteknik; Vehicle and Maritime Engineering;

    Abstract : The objective of this doctoral thesis is to study three different innovative noise control techniques in ducts namely: acoustic metamaterials, porous absorbers and microperforates. There has been a lot of research done on all these three topics in the context of duct acoustics. READ MORE

  5. 5. Molecular electronic,  vibrational and rotational motion in optical and x-ray fields

    University dissertation from Stockholm : KTH

    Author : Sergey Gavrilyuk; KTH.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; x-ray; nonlinear optics; photobleaching; recoil; anisotropy; Auger; NATURAL SCIENCES Physics Atomic and molecular physics Chemical physics; NATURVETENSKAP Fysik Atom- och molekylfysik Kemisk fysik;

    Abstract : The subject of this theoretical  study is the role ofelectronic structure as well as of rotational and vibrational motionson interactions between molecules and electromagnetic radiation,ranging from optical to x-ray. The thesis concerns both linear and nonlinear regimes of the light-matter interaction. READ MORE