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.
In our previous work [B. Guo and M. Q. Xie, Optik 125, 2137 (2014)], we found that plasma photonic crystal (PC), which proposed is a multilayer stack of alternating plasma layer and dielectric, can show negative refraction not only at the frequency edge of the band gap but also at some other frequencies which do not belong to any band gaps when the frequency of oblique incidence is below the plasma...
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.