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.
Carbon nanotube (CNT) field emission cathodes suffer from electric field screening effect arising from densely packed CNTS, resulting in a lower current density. To solve this problem, CNTS have to be separated in a proper manner. One way is to use electron beam lithographic method to produce single CNT arrays. Previously, we have fabricated gated field emission arrays with single CNT emitters by...
In this work, we focus our attention on fabrications and characterizations of micro-gated-field emission arrays with CNTs grown on Mo tips (CNT FEAs). By further optimizing processing parameters, such as thickness of the sacrificial layer and height of Mo tips, the percentage of single CNTs increased to more than 50%. The I-V measurement of an array with 11000 cells at a gate voltage of 92 V showed...
This paper describes the field emission array (FEA) cathode manufacturing to obtain high current density, the electron gun structure, the fabrication process and the test results of a FEA-gun. A three-dimensional electromagnetic simulation program MAFIA was used to design the FEA electron gun, and the electron beam trajectory was simulated under initial condition of emitted electrons with half angle...
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.