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.
We present a novel concept for ophthalmic glucose sensing using a biosensing system that consists of plasmonic dipole metamaterial covered by a layer of functionalized hydrogel. The metamaterial together with the hydrogel can be integrated into a contact lens. This optical sensor changes its properties such as reflectivity upon the ambient glucose concentration, which allows in situ measurements in...
We experimentally demonstrate a nanoplasmonic analog of electromagnetically induced transparency utilizing a stacked optical metamaterial. Specifically, we achieve a very narrow transparency window with high modulation depth due to nearly complete suppression of radiative losses.
The authors measure and analyze the optical properties of 2-dimensional quasicrystalline metamaterials. The structure comprises a cut-plate structure on a 180 nm thick HfO2 slab waveguide. The cut plates consist of two 25 nm thick gold dots with 120 nm diameter, separated by 50 nm of MgF2 spacer. These basic unit cells are arranged in a Penrose-type 2D arrangement with tiling constant 530 nm. Hence...
The work investigates the enhancement potential for nonlinear effects of periodically arranged metallic nanostructures consisting of a pair of gold nanowires separated by a thin dielectric spacer of magnesium fluoride (MgF2) . Emphasis is put on chi(3) nonlinearities for which it is assumed that the intrinsic nonlinearity of MgF2 prevails against those in the metallic nanostructures. To access theoretically...
In this paper, we show that this large-area, high-coverage method for the fabrication of optical split-ring resonator gold metamaterials allows for substantial tunability of the structural dimensions and their respective resonance frequencies. We demonstrate excellent agreement of the adjustable parameters, such as the inner and outer ring diameter, the opening gap angle, as well as the metal thickness...
We experimentally demonstrate a nanoplasmonic analog of electromagnetically induced transparency utilizing a stacked optical metamaterial. Specifically, we achieve a very narrow transparency window with high modulation depth due to nearly complete suppression of radiative losses.
We introduce a novel concept to nano-photonics, namely stereometamaterials. Specifically, we study stacked twisted split-ring resonator metamaterials and demonstrate how their optical properties depend on the particular arrangement of the individual constituents.
We experimentally demonstrate the implementation of three-dimensional optical metamaterials. We investigate the interaction between adjacent stacked layers using the method of plasmon hybridization and analyze the optical properties of stacked metamaterials with increasing layer numbers.
Interaction of localized plasmons and propagating waveguide modes leads to strong coupling and polariton formation. These polaritons are the basis of nanoplasmonic effects in linear and nonlinear optics. Experiments, theory, and applications are presented.
The influence of the split-ring resonator geometry in a metamaterial on the electromagnetic resonances is analyzed experimentally and theoretically. In our discussion, we focus on both the permeability and the permittivity resonances.
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.