Spherical and cylindrical conductive thermal diodes based on VO2

First Silicon Microdosimeters Based on Cylindrical Diodes

Silicon detectors are used in many medical applications for particle tracking, X-ray medical imaging, gamma or X-ray spectrometry, among others. The development of new silicon detectors for specific physics areas leads to overcome technological challenges that means not only optimize the design, but also improve the micro-fabrication processes. A new design of a solid-state-detector based on si...

InP-Based Cylindrical Microcavity Light-Emitting Diodes

We have investigated the properties of InP-based microcavity light-emitting diodes ( = 1 6 m). Our objective was mainly to study the effects of lateral confinement of optical modes, which was achieved by the wet oxidation of double In0 52Al0 48As layers. The smallest devices had a cavity radius of 0.5 m, which becomes comparable to where is the effective refractive index of the photon emitting ...

Thermal characterization of micro/nanoscale conductive and non-conductive wires based on optical heating and electrical thermal sensing

In this work, a technique based on optical heating and electrical thermal sensing (OHETS) is developed to characterize the thermophysical properties of one-dimensional micro/nanoscale conductive and non-conductive wires. In this method, the to-be-measured thin wire is suspended over two electrodes and is irradiated with a periodically modulated laser beam. The laser beam induces a periodical te...

Highly conductive VO2 treated with hydrogen for supercapacitors.

Reduction of VO2 resistance by nearly 3 orders of magnitude through H2 treatment was reported for supercapacitor application. A specific discharge capacitance of 300 F g(-1) and a specific energy density of 17 W h kg(-1) at a rate of 1 A g(-1) are demonstrated with long-term cycling stability, which is 4 times higher than untreated samples.

Section 13.7 Cylindrical and Spherical Coordinates