Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Thomson Effect"”.
-
Nanoscale thermal transport for biological and physical applications
… able to travel through it. In this thesis, the effects of surface stress on the lattice thermal conductivity are presented for a silicon nanowire. Based on a continuum approach, a phonon dispersion relation is derived for a nanowire that is under surface stress and the phonon relaxation time is …
-
Phase-field Modeling of Phase Change Phenomena
… In particular, we explain how the Gibbs-Thomson effect and the kinetic effect are recovered. Thirdly, we couple the Allen-Chan and heat transfer equations in a way that the whole system has the energy decay property. We also propose a convex-splitting-based numerical scheme that satisfies …
-
Thermoelectric Energy Harvesting for Sensor Powering
… of the model. This model can quantize the effects of the Thomson effect, contact thermal and electrical resistance, and heat leakage, on the performance of a thermoelectric generator. The heat sink can be another issue for the design of high-performance TEG. An innovative heat sink design …
-
Comprehensive Modeling of Novel Thermal Systems: Investigation of Cascaded Thermoelectrics and Bio-Inspired Thermal Protection Systems Performance
Thermal systems involve multiple components assembled to store or transfer heat for power, cooling, or insulation purpose, and this research focuses on modeling the performance of two novel thermal systems that are capable of functioning in environments subjected to high heat fluxes. The first …
-
Electrocatalytic activities of supported Pt nanoparticles for low-temperature fuel cell applications
… seek to explore the fundamentals behind the size effect on the ORR activities. We found that below 5 nm, particle size does not play a big role in the catalytic activity. However, the instability of Pt NPs in acidic environment, under simulated operation conditions of a PEMFC, is found to strongly …
-
Artificial Anisotropy for Transverse Thermoelectric Heat Flux Sensing
… theory are the Seebeck and Peltier effects. The Seebeck effect is the generation of a voltage in a device that consists of two different materials in the presence of a temperature gradient, while the Peltier effect is the generation of a temperature gradient across a device of two …