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 have developed a practical superconducting nanowire single photon detector (SNSPD) system with our superconducting thin films and devices fabrication, optical coupling packaging, and cryogenic technology. The SNSPD devices were fabricated from high-quality niobium nitride (NbN) ultra-thin films that were epitaxially grown on single-crystal MgO substrates, and optical cavity structure were applied...
Arc fusion method in a submerged arc furnace has been successfully employed to grow high quality magnesium oxide (MgO) single crystals. In present study, a 3D thermal model based on finite element method was used to quantify the power consumption in the smelting process. The Joule heating power and the voltage of the bath was predicted by the model, and then according to energy conservation, the arc...
In THz regime, NbN Superconductor - Insulator - Superconductor (SIS) mixers are potentially applicable to astronomy and atmospheric research. We have developed a 0.5-THz waveguide SIS mixer incorporating twin NbN/AlN/NbN junctions and NbN/MgO/NbN tuning circuit. In this paper, we compare it with a 0.5-THz Nb SIS mixer, which has been successfully used on POST telescope. The design and fabrication...
This paper mainly reports the development of a 0.5-THz waveguide SIS (superconductor - insulator - superconductor) mixer, which adopts twin NbN-based SIS junctions (NbN/AlN/NbN) connected in parallel. The 0.5-THz waveguide NbN SIS mixer is designed incorporating with a 51-mum thick MgO substrate and a waveguide mixer mount with no back-short cavity. Detailed simulation results, junction fabrication...
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.