Optimization of nanomaterials for energy applications with simulation and machine learning

AD Stefanou - 2024 - didaktorika.gr
This thesis addresses the scientific question of the optimization of width-modulated
nanowaveguides (nWVGs) for thermoelectric (TE) applications. Among energy applications …

[HTML][HTML] Non-monotonic variation of the thermoelectric efficiency with modulation mismatch in width-modulated nanowaveguides

AD Stefanou, I Chouthis, X Zianni - Journal of Applied Physics, 2024 - pubs.aip.org
Efficient thermoelectric energy conversion at the nanoscale could power the Internet of
Things and cool nanoelectronic circuits and improve the performance of quantum …

Designing width modulation of nanowaveguides for minimum phonon conduction with calculations and Bayesian optimization

I Chouthis, AD Stefanou, X Zianni - Solid State Sciences, 2024 - Elsevier
Minimizing phonon conduction across nanostructures is necessary for blocking parasitic
heat conduction that limits thermoelectric energy conversion efficiency at the nanoscale …

The Effect of Width-Mismatch of Modulated Nanowaveguides on the Thermoelectric Efficiency

AD Stefanou, X Zianni - Micromachines, 2023 - mdpi.com
Width-modulated nanowaveguides are promising for thermoelectric efficiency enhancement
because electron and phonon transport properties can be geometrically tuned for improved …

Physics mechanisms underlying the optimization of coherent heat transfer across width-modulated nanowaveguides with calculations and machine learning

AD Stefanou, X Zianni - Journal of Physics: Condensed Matter, 2024 - iopscience.iop.org
Optimization of heat transfer at the nanoscale is necessary for efficient modern technology
applications in nanoelectronics, energy conversion, and quantum technologies. In such …

Designing phonons for thermoelectric metamaterials with physics and machine learning optimization

X Zianni, AD Stefanou, I Chouthis - Thermoelectrics, 2023 - thermoelectric-conference.eu
Minimizing phonon transmission across nanostructures is necessary for blocking parasitic
heat conduction that limits the efficiency of heat management and energy conversion at the …

A physics rule to design aperiodic width-modulated waveguides for minimum phonon transmission with Bayesian optimization

AD Stefanou, X Zianni - Nanoscale, 2023 - pubs.rsc.org
Aperiodic nano-waveguides (nWVGs) and superlattices (SLs) limit phonon transmission and
heat conduction much more efficiently than periodic ones. They could block parasitic heat …

Towards Optimizing Width Modulation for Maximum Thermoelectric Efficiency

AD Stefanou, X Zianni - Micromachines, 2023 - mdpi.com
Maximizing thermoelectric efficiency is typically addressed as identical to minimizing
parasitic thermal conduction. Such an approach relies on the assumption that the adopted …

Decouple electronic and phononic transport in nanotwinned structures: a new strategy for enhancing the figure-of-merit of thermoelectrics

Y Zhou, X Gong, B Xu, M Hu - Nanoscale, 2017 - pubs.rsc.org
Thermoelectric (TE) materials manifest themselves to enable direct conversion of
temperature differences to electric power and vice versa. Though remarkable advances …

Nanowires for Thermoelectrics

M Tan - Nanowires, 2023 - taylorfrancis.com
Thermoelectric effect is a phenomenon in that heat can be transferred to electricity directly,
and vice versa. It is a promising eco-friendly energy generation and cooling method that …