Titanium adhesive

As already shown in the previous section, short channel effects such as lack of saturation can be avoided by a sufficiently thin gate insulator and improved charge injection could be realised by a thinner titanium adhesion layer. Never-... 

To detect explosive molecules, we functionalized silicon cantilevers with 4-MBA SAMs. The cantilevers had typical dimensions of 180 im length, 25 im width, and 1 im thickness (Park Scientific Instruments, Inc.) and a spring constant of 0.26 N/m. One side of the cantilever had 30 nm thick gold film with a 3 nm titanium adhesion layer. The formation of a... 

Fig. 19 Schematic depictions of (a) the preparation of a cobalt pyrite (C0S2) film electrode via the thermal sulfidation of a 100 nm thick cobalt film deposited over a titanium adhesion layer on a roughened borosilicate glass substrate by electron-beam evaporation and (b) the incorporation of an as-synthesized C0S2 film on glass into a CdS/ CdSe-sensitized thin-layer liquid-junction quantum dot-sensitized solar cell (QDSSC) filled with sulfide/polysulfide electrolyte to demonstrate the high QDSSC performance enabled by the C0S2 counter electrode. Reproduced from ref. 167 with permission from the American Chemical Society.

Keith has covered all aspects of titanium adhesive bonding, including adhesive selection, in a 1973 discussion. 

Wooden airframes have historically been bonded, originally with glues such as casein or synthetic urea-formaldehyde systems, but today most aerospace structures are made from fibre composites (glass fibre and carbon fibre, predominantly) and metals (mostly aluminium but also titanium). Adhesives are well suited for joining composite materials since the need to drill holes through the composite can be avoided and, in some cases, the... 

Degradation of commonly used electrode stack configurations during PZT film heat treatment have also been observed by RBS, as presented in Figure 12.9. The results indicate that there is formation of a titania phase within the platinum top layer due to diffusion of titanium from the titanium adhesion layer and diffusion of oxygen from the surface of the film. If the formation of this phase becomes extensive, the conductivity of the platinum electrode can be substantially diminished. The use of several of these analytical techniques in conjunction with one another can... 

FIGURE 16. Sputter depth-profiles of both sides of propagated crack in a titanium adhesive system. The depth profiles allow the locus of failure to be fixed at or near the oxide-metal interface. (From Reference 86.)... 

Inorganic (non-polymer) basecoats can provide layers to aid in adhesion (adhesion layer or glue layer) of a film to a surface. For example, in the Ti-Au metallization of oxides, the titanium adhesion layer reacts with the oxide to form a good chemical bond and the gold alloys with the titanium. The layers may also be used to prevent interdiffusion (diffusion barrier) between subsequent layers and the substrate. For example, the electrically conductive compound TiN is used as a barrier layer between the aluminum metallization and the silicon in semiconductor device manufacturing. 

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