Co-condensation Process of High Temperature Metallic Vapors

Direct Condensation of Hydrocarbon Vapors

High-temperature superconductivity in atomic metallic hydrogen

Superconductivity in the recently proposed ground-state structures of atomic metallic hydrogen is calculated over the pressure range 500 GPa to 3.5 TPa. Near molecular dissociation, the electron-phonon coupling λ and renormalized Coulomb repulsion are similar to the molecular phase. A nearly continuous increase in the critical temperature Tc with pressure is thus predicted in this range, to ∼35...

Thermal nanoimprint process for high-temperature fabrication of mesoscale epitaxial exchange-biased metallic wire arrays

A thermal nanoimprint process for the high-temperature (400 ◦C) fabrication of submicron, epitaxial, metallic wire arrays over areas > 1 × 1 cm2 is reported. Based on a method using an imprinted polymeric bilayer resist template that is transferred to a metallic (molybdenum) mask, this process is enabled by an appropriate undercut profile of the Mo mask. The undercut profile is obtained from a ...

Silicon in carbonaceous chondrite metal: relic of high-temperature condensation.

Electron microprobe analyses of an extraordinarily large metal grain from the Murchison type 2 carbonaceous chondrite gave 0.24 mole percent silicon. Thermodynamic calculations show that this is a natural consequence of condensation of alloys from the solar nebular gas at a total pressure l0(-5) less, similar P(tot) < l0(-3) atmosphere, provided they failed to equilibrate with it after cooling ...

Ultra-High Performance, High-Temperature Superconducting Wires via Cost-effective, Scalable, Co-evaporation Process

Long-length, high-temperature superconducting (HTS) wires capable of carrying high critical current, Ic, are required for a wide range of applications. Here, we report extremely high performance HTS wires based on 5 μm thick SmBa2Cu3O7--δ (SmBCO) single layer films on textured metallic templates. SmBCO layer wires over 20 meters long were deposited by a cost-effective, scalable co-evaporation p...