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 report a bull's-eye gold nanostructure, which focuses infrared beams into subwavelength spots with the ability to shape the longitudinal intensity profile and the focal length, thus addressing many challenges in label-free imaging, nanolithography, and biomedical applications.
A plasmon waveguide resonance (PWR) sensor is proposed for studying the interaction between gold nanoparticles and proteins. The ability of the PWR sensor to operate in both TM and TE Polarizations, i.e. its polarization diversity, facilitates the simultaneous spectroscopy of the nanoparticles surface reactions using both polarizations. The response of each polarization to streptavidin‐biotin binding...
We present a novel technique for spectral decomposition of light in a sub-wavelength plasmonic bull's eye grating structure. Controlling plasmon coupling through the variation of groove width enables spatial control over light localization in the grating.
We present a new model to investigate the behavior of metallic gratings. Resonators sustaining coupled plasmonic modes are introduced as the building blocks of gratings. We show with this refined model of the unit resonator the emergence of a new and unexplored outlook of grating architectures.
A graded grating is used to localize frequency components of a broadband THz source. We show spatial localization of the field within the grating. Further, various nano-antennas placed within the structure are amenable to detecting the trapped signal. This is verified using both time-domain and frequency-domain simulations in the range of 0.1–90 THz. The lifetimes of these trapped modes are found...
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.