We have probed the local thermoelectric power of semiconductor nanostructures with the use of ultrahigh-vacuum scanning thermoelectric microscopy. When applied to a p-n junction, this method reveals that the thermoelectric power changes its sign abruptly within 2 nanometers across the junction. Because thermoelectric power correlates with electronic structure, we can profile with nanometer spat...

Abstract The average global temperature has increased by approximately 0.7 °C since the last century. If current trend continues, may further increase 1.4 – 4.5 until 2100. It is estimated that air-conditioning and refrigeration systems contribute about 15% of world electrical energy demand. rapid depletion non-renewable resources such as fossil fuels associated emissions lead to development al...

This paper describes a new readout integrated circuit and non-uniformity correction (NUC) method that ensures the bolometer array has low over wide operating temperature range without thermoelectric cooler (TEC). The proposed NUC minimizes memory required for signal processing, making it suitable compact power-efficient portable infrared cameras. It corrects aging phenomenon through start-up ca...

Abstract This paper presents the identification of ThermoElectric Cooler (TEC) plant using a hybrid method Multi-Verse Optimizer with Sine Cosine Algorithm (hMVOSCA) based on continuous-time Hammerstein model. These modifications are mainly for escaping from local minima and making balance between exploration exploitation. In model linear system is used hMVOSCA to tune coefficients both subsyst...

The chill-on-demand system is a new technology designed to provide cooled products on demand, thereby avoiding chilled storage. It uses the cooling effect provided by endothermic desorption of carbon dioxide previously adsorbed onto a bed of activated carbon and has the potential to be applied to any type of product that needs to be cold at the point of consumption. The principles of life cycle...

Thermoelectric transport perpendicular to layers in multiple barrier superlattice structures is investigated theoretically in two limiting cases of no lateral momentum scattering and strong scattering. In the latter regime when lateral momentum is not conserved, the number of electrons participating in thermionic emission will dramatically increase. The cooling power density is calculated using...

The thermoelectric properties of poly(3,4-ethylenedioxythiophene) (PEDOT)-based materials have attracted attention recently because of their remarkable electrical conductivity, power factor, and figure of merit. In this review, we summarize recent efforts toward improving the thermoelectric properties of PEDOT-based materials. We also discuss thermoelectric measurement techniques and several un...

Thermoelectric energy generators are attractive as potential energy harvesters for converting waste thermal energy into electrical power. Optimized thermoelectric device designs require 100-200 μm element thicknesses currently unachievable with common manufacturing technologies. This work presents both a unique direct-write dispenser printing technique and novel polymer-composite thermoelectric...