2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/105664I. Introduction II. Theoretical background (Landauer-Buttiker formalism of thermo-electricity, Quantum point contacts as ideal electron waveguides, Saddle-shaped potential) III. Experiments (Thermopower, Thermal conductance, Peltier effect) IV. Conclusions#4 of a series of 4 legacy reviews on QPC'sMesoscale and Nanoscale Physicstext