摘要:
A polymer for use in an optical device comprising a first, optionally substituted, repeat unit of formula and a second, optionally substituted, repeat unit of formula wherein each Ar and Ar′ is the same or different and comprises an optionally substituted aryl or heteroaryl group and optionally a third, optionally substituted, repeat unit in a molar ratio of no greater than 5%, the third repeat unit having a formula —Ar—N(Ar)—Ar— and having a single nitrogen atom in its backbone.
摘要:
A non-volatile memory element based upon a thin epitaxial film of manganese aluminum upon a III-V semiconductor is described. The film is stable at elevated temperatures required for III-V semiconductor device processing, so permitting the monolithic integration of non-volatile memory elements with III-V semiconductor electronic and photonic devices.
摘要:
A semiconductor device comprises mutually separated first and third barrier layers interposed between the first and second patterned terminals. The device operates by the resonant tunneling of carriers from the second terminal to the first terminal. The first terminal is patterned into a section and a plurality of layers comprising the mutually separated first and second barrier layers are formed on top of the first terminal. A second terminal is then formed on top of the plurality of semiconductor layers. The second terminal is then patterned so that it only overlies the first terminal in confined region. A front-gate is then formed on top of the patterned second terminal.