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.
Field-emission current from titanium-oxide nanostructure is increased by ultra-violet (UV) light irradiation. The enhancement factor of the UV whose wavelength is 365 nm is larger than that of 405 nm. The increased emission current did not decrease even after stopping the irradiation until the sample is exposed to the air. This suggests that the surface cleaning is the origin of the observed current...
In this paper, we report on the evaluation of the emission uniformity in the emission area of the cathodes by using a Faraday-cup with a probe hole of 20 mum in diameter. In the experiments, the cathodes were operated in pulse mode with the frequency of 100 Hz with pulse width of 250 mus in a vacuum of 10"8 Pa.
In this study, the structural changes in the electron beam-deposited Pt field emitter under field emission and field evaporation were investigated by in situ transmission-electron-microscope (TEM) observation. The structure of the Pt field emitter was found to be unchanged under field emission with an emission current of less than 480 nA. On the contrary, the top of the Pt field emitter was found...
This paper describes a quantitative measurement method for Young's modulus of nanometer-thick film materials by using a MEMS resonator array. The MEMS resonators fabricated by silicon micromachining techniques were designed to be driven at their resonant frequencies from 6.0 kHz to 35.5 kHz. From the difference in resonant frequencies between before and after deposition of these films onto the resonators,...
In this paper, in order to improve the emission efficiency and understand the emission mechanism MOS cathodes are fabricated based on nanocrystalline Si (nc-Si) prepared by a pulsed laser ablation (PLA) technique and investigated their emission properties. The cathode is composed of nc-Si covered with a thin oxide film sandwiched between an n-type silicon substrate as an electron source and a thin...
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.