Sökning: "Photothermal Effect"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Photothermal Effect.

  1. 1. Photothermal Effect in Plasmonic Nanostructures and its Applications

    Författare :Xi Chen; Min Qiu; Sergey I. Bozhevolnyi; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plasmonic; Photothermal Effect; Silicon Photonics; Gold Nanoparticles; Physics; Fysik;

    Sammanfattning :   Plasmonic resonances are characterized by enhanced optical near field and subwavelength power confinement. Light is not only scattered but also simultaneously absorbed in the metal nanostructures. LÄS MER

  3. 2. Lignin nanoparticles for photonic crystals and photothermal films

    Författare :Jinrong Liu; Mika H. Sipponen; Maurice Collins; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lignin; colloid chemistry; films; coatings; nanocomposites; materialkemi; Materials Chemistry;

    Sammanfattning : The development of sustainable materials from biobased resources is essential due to environmental concerns posed by fossil-based materials. Lignin is a chemically complex biopolymer that exists in woody tissues of vascular plants. Lignin has many useful properties such as antioxidant activity, thermal stability, UV-absorbance, rigidity and so on. LÄS MER

  4. 3. Optical manipulation and heating of gold nanoparticles near interfaces

    Författare :Daniel Andrén; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LSPR spectroscopy; particle-surface separation distance; thermal reshaping; TIRM; nanomotor; plasmonics; photothermal effects; Brownian dynamics; gold nanorod; optical tweezers;

    Sammanfattning : By focusing laser light to small volumes, its momentum can be used to trap and manipulate objects in the size range from cells down to single atoms. Devices using this effect are called optical tweezers, and have found use in measuring and applying minuscule forces and torques, contributed to deepening our knowledge of molecular motors, unraveling the mechanics of cells and DNA, and better understand statistical mechanics and hydrodynamic interactions at the nanoscale. LÄS MER

  5. 4. Infrared Neural Modulation: Photothermal Effects on Cortex Neurons Using Infrared Laser Heating

    Författare :Qingling Xia; Tobias Nyberg; Björn Granseth; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; neural modulation; infrared laser; in - vitro experiment; multi - electrode arrays MEA ; heating model; temperature; neural networks; infrared neural inhibition INI ; hyperexcitation;

    Sammanfattning : It would be of great value to have a precise and non-damaging neuromodulation technique in the field of basic neuroscience research and for clinical treatment of neurological diseases. Infrared neural modulation (INM) is a new modulation modality developed in the last decade, which uses pulsed or continues infrared (IR) light with a wavelength of 1200 to 2200 nm to directly alter neural signals. LÄS MER

  7. 5. Hybrid antibacterial microneedle patches against skin infections

    Författare :Jill Ziesmer; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Skin and soft tissue infections (SSTIs) are a major healthcare burden that has increased in incidence since the beginning of the 21st century resulting in an annual spending of approximately 15 b$ in 2012 in the United States (US).1 Treatment of SSTIs is complex and typically involves the administration of antibiotics. LÄS MER