Sökning: "metasurface"
Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet metasurface.
1. Design of Functional Structures and Measurement Techniques for Electromagnetic Waves
Sammanfattning : Electromagnetic fields exist all around us. Through evolution, nature has developed tools to interact and use these fields, where our eyes are a spectacular example. Humans have a long history of developing structures and objects of their own to alter and interact with these fields. LÄS MER
2. Machine learning for the free-form inverse design of metamaterials
Sammanfattning : We present our work on using deep neural networks for the prediction of the optical properties of nanophotonic structures and for the inverse design of such nanostructures. First we show that neural networks can indeed be used to predict the optical properties of nanostructured materials such as metasurfaces. LÄS MER
3. Designer magnetoplasmonics for adaptive nano-optics
Sammanfattning : Materials that provide real-time control of the fundamental properties of light at visible and near-infrared frequencies enable the essential components for future optical devices. Metal nanostructures that couple electromagnetic (EM) radiation on a sub-wavelength length scale to free electrons, forming propagating or localized surface plasmons, provide many exciting functionalities due to their ability to manipulate light via the local EM field shaping and enhancement. LÄS MER
4. Optical metasurfaces for momentum exchange between light and matter
Sammanfattning : Light carries energy and momentum that can be transferred to matter. Because of the conservation of total momentum, a change in light momentum due to interaction with an object must be compensated by an equal but opposite change in the momentum of that object. LÄS MER
5. Momentum exchange between light and nanostructured matter
Sammanfattning : An object's translational and rotational motion is associated with linear and angular momenta. When multiple objects interact the exchange of momentum dictates the new system's motion. LÄS MER