Heat Transport in Proximity Structures

Heat transport in proximity structures.

We study heat and charge transport through a normal diffusive wire coupled with a superconducting wire over the region smaller than the coherence length. Because of partial Andreev reflection of quasiparticles from the interface, the subgap thermal flow is essentially suppressed and approaches zero along with energy, which is specific for diffusive structures. Whereas the electric conductance s...

Heat and Mass Transport in Heat Pipe Wick Structures

A novel experimental approach is developed for characterizing the performance of heat pipe wick structures. This approach simulates the actual operation of wick structures in a heat pipe. Open, partially submerged, sintered copper wicks of varying pore size are studied under the partially saturated conditions found in normal heat pipe operation. A vertical wick orientation, where the capillary ...

Proximity Structures for Geometric Graphs

In this paper we study proximity structures like Delaunay triangulations based on geometric graphs, i.e. graphs which are subgraphs of the complete geometric graph. Given an arbitrary geometric graph G, we define several Voronoi diagrams, Delaunay triangulations, relative neighborhood graphs, Gabriel graphs and then study their complexities when G is a general geometric graph or G is some speci...

Proximity Effects in Superconductor-Ferromagnet Structures

Proximity structures in the fixed orientation metrics

We present algorithms computing two types of proximity structures in the plane with a fixed orientation metric. Proximity structures have proven useful for Steiner tree heuristics in the Euclidean plane and may play a similar role for the fixed orientation metrics where Steiner trees are important in the area of VLSI design. We show how to find an all nearest neighbour graph NNG(Z) of a set Z o...