The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A new multifunctional quadrature coupler is proposed and developed at 2.0 GHz, with a 70.7% wide operating band, good frequency selectivity, and high harmonic suppression over 30 dB at 6.0 GHz. It is realized with EBG-/DGS-loaded arms and open-ended coupled lines. With the properly selected critical parameters, arbitrary power division ratio, such as 2:1, can easily be achieved. The measured and simulated...
Metamaterials are designed to achieve unprecedented light-matter interactions. Here we demonstrate a novel viable and scalable assembly route to optical metamaterials with structures dictated by their own light-matter interactions.
We introduce a new method to localize lightwaves. We show how the interaction of a gain medium with a planar deep-UV plasmonic heterostructure, at its zero-vg point, strongly localizes light. A quantum-coherent drive provides a means to control the localization and dramatically improve the dynamics.
Anisotropic metamaterial made of nanowire array can realize negative refraction of light even without a negative phase index of refraction. Using this material, we were able to achieve lensing action with micron-thick slab and demonstrate imaging of a slit object. The details of the focused light beam in 3-dimensional space have been mapped with NSOM.
The optical response of fishnet metamaterial can be modulated in femtosecond time scale. This modulation dynamics is mainly determined by the constituting dielectric medium, but the modulation magnitude is greatly enhanced through the plasmon resonance.
We report the first bulk metamaterials at visible frequencies that shows intriguing negative refraction for all incident angles. The metamaterial is realized by growing silver nanowire in a porous alumina template.
An optical cavity resonator of deep sub-wavelength size is demonstrated numerically by inserting a single layer of ldquofishnetrdquo structure of next refractive index into a Fabry-Perot cavity composed of two gold films.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.