Sökning: "plasmonics"
Visar resultat 16 - 20 av 43 avhandlingar innehållade ordet plasmonics.
16. Charge Separation on Localized Surface Plasmon and Hot Carrier Transfer to Semiconductors
Sammanfattning : The relatively recent discovery that plasmonic nanoparticles generate energetic electron-hole pairs known as hot carriers has been the source of interest from many scientific groups. The capability to extract these short-lived hot carriers from metal nanoparticles (NPs) might potentially lead to applications in solar cells, photodetection, and photocatalysis. LÄS MER
17. Nanoplasmonic Sensing using Metal Nanoparticles
Sammanfattning : In our modern society, we are surrounded by numerous sensors, constantly feeding us information about our physical environment. From small, wearable sensors that monitor our physiological status to large satellites orbiting around the earth, detecting global changes. LÄS MER
18. Photoemission Electron Microscopy for Ultrafast Nano-Optics - Femtoseconds to Attoseconds
Sammanfattning : Ultrafast nano-optics is a new and quickly evolving research field centred around the control, manipulation, and application of light on a nanometre and femtosecond scale. This can lead to improved electro-optical devices, more sensitive spectroscopy, and real-time control of chemical reactions. LÄS MER
19. Nanostructured electromagnetic metasurfaces at optical frequencies
Sammanfattning : Electromagnetic metasurfaces are broadly defined as optically thin layersthat are structured on the subwavelength scale. In general, metasurfacesthus consist of nanoparticles, or other kinds of ”meta-atom”, arranged insome pattern where both the individual particle sizes and the inter-particledistances are much smaller than the wavelength. LÄS MER
20. Surface characterization and manipulation of polyampholytic hydrogel coatings
Sammanfattning : This thesis is dedicated to building up fundamental knowledge about polyampholytic hydrogels, which are developed in our group for anti-fouling purposes. Charge-balanced polymers, where positive and negative charges balance each other, have emerged as interesting candidates for many applications in materials science. LÄS MER