Search results
Results from the WOW.Com Content Network
A barrier metal is a material used in integrated circuits to chemically isolate semiconductors from soft metal interconnects, while maintaining an electrical connection between them. For instance, a layer of barrier metal must surround every copper interconnect in modern integrated circuits, to prevent diffusion of copper into surrounding ...
LISICON is an acronym for LIthium Super Ionic CONductor, [1] which refers to a family of solids with the chemical formula Li 2+2x Zn 1−x GeO 4. The first example of this structure was discovered in 1977, providing a chemical formula of Li 14 Zn(GeO 4 ) 4 .
Texas Lt. Gov. Dan Patrick said U.S.-owned border wall materials, which were available for sale, were pulled from an Arizona auction at the government's request. The Lonestar State had shown ...
The diffusion barrier avoids interaction between Au and Ti/Cr and requires higher temperatures to form a reliable and uniform bond. Further, the very limited solubility of silicon in titanium and chromium can prevent the developing of Au-Si eutectic composition based on the diffusion of silicon through titanium into gold.
Transition-metal nitrides, such as TiN and TaN, find potential use both as metal barriers and as gate metals. Metal barriers are used to encase the copper interconnects used in modern integrated circuits to avoid diffusion of Cu into the surrounding materials, such as insulators and the silicon substrate, and also, to prevent Cu contamination ...
The gold film can also be deposited on a diffusion barrier film, i.e. oxide or nitride. [8] Also, an additional nano crystalline metal film, e.g. Ta, Cr, W, or Ti, can enhance the adhesion strength of the diffusion bond at decreased applied pressure and bonding temperature. [4]
The barrier is near the Texas border city of Eagle Pass, where Republican Gov. Greg Abbott has authorize Court order allows Texas' floating barrier on US-Mexico border to remain in place for now ...
Indeed, both the negative (lithium metal) and the positive (air or oxygen) electrodes are the reasons why, respectively, rechargeable lithium-metal batteries failed to reach the market in the 1970s (the lithium-ion battery in a mobile device uses a LiC 6-graphite compound on the negative electrode, not a lithium metal).