We have observed experimentally that the thermal conductance of a 2.76-microm-long individual suspended single-wall carbon nanotube (SWCNT) was very close to the calculated ballistic thermal conductance of a 1-nm-diameter SWCNT without showing signatures of phonon-phonon Umklapp scattering for temperatures between 110 and 300 K. Although the observed thermopower of the SWCNT can be attributed t...

In a previous paper [4], a simple model was developed (referred to as Modell) to describe the surface temperature evolution of a 1/8" thick aluminum panel with fixed I" diameter flat bottom holes of different depth in response to a short pulse of radiant energy. That model correctly described the temporal behavior of alii" flat bottom holes. To further validate Model I, a new panel was fabricat...

For the optimisation of annealing process aluminium coils, simulation is often performed. To simulate with higher accuracy, reliable input parameters are required, and thermal conductivity (thermal contact conductance) one them. In present study, a method to measure conductance metallic sheets were developed based on steady-state comparative longitudinal heat flow. The apparatus was built compr...

A novel formal equivalence between thermal averages of coherent properties (e.g. conductance), and time averages of a single wavepacket arises for Fermi gasses and certain geometries. In the case of one open channel in a quantum point contact (QPC), only one wavepacket history, with wavepacket width equal to thermal length, completely determines thermally averaged conductance. The formal equiva...

We report on noise and thermal conductance measurements taken in order to determine an upper bound on the performance of graphene as a terahertz photon detector. The main mechanism for sensitive terahertz detection in graphene is bolometric heating of the electron system. To study the properties of a device using this mechanism to detect terahertz photons, we perform Johnson noise thermometry m...