All theoretical calculations and predictions concerning the efficiency and resolution of fluorescent screens have been based until now on the Hamaker-Ludwig model,lV2 according to which a phosphor screen is assumed to be a homogeneous and uniform layer of phosphor material. As a result the model is suitable for the nongranular screens like the ones prepared by evaporation, but it is generally u...

The results of hydrogenation of single walled carbon nanotubes (SWCNTs)-SnO2 composite thin film is reported here. SWCNTs mixed with SnO2 by weight are made into pellet without any binder. Then, the pellet is evaporated by electron beam on glass substrates at room temperature in hydrogen atmosphere. The amount of hydrogen incorporated in the SWCNTs-SnO2 composite is found to be 2.4 wt.%. In add...

Cobalt was deposited on single-crystal Ges001d surface at ,350 °C by electron-beam evaporation in an ultrahigh-vacuum transmission electron microscope. The deposited Co reacts with Ge to form nanosized islands with the cobalt germanide Co5Ge7 phase. The Co5Ge7 islands show square and rectangular shapes. Two epitaxial orientation relationships between Co5Ge7 and Ge were observed: Co5Ge7 k110ls00...

The NanoStructures Laboratory (NSL) at MIT develops techniques for fabricating surface structures of integrated circuits (IC) with feature sizes in the range from nanometers to micrometers, and uses these structures in a variety of research projects. The NSL includes facilities for lithography (photo, interferometric, electron beam, ion beam, and x-ray), etching (chemical, plasma and reactive-i...

Two-component thin films are deposited in a high-vacuum system from two close sources, heated by an electron beam which is deflected between them. By using quartz-crystal monitors the evaporation rates are measured separately, which is usually considered to be problematical. One rate signal is used to regulate the appropriate deposition rate by controlling the emission current. The other deposi...

Bimetallic islands films consisting of composite Au-Ag nanoparticles are deposited on glass substrates by electron beam evaporation. Broad tuning of the surface plasmon resonance (SPR) characteristics can be achieved by controlling film composition, deposition temperature and post-deposition thermal annealing. Optical and structural characterization of the samples enable to establish the link b...