نتایج جستجو برای: electronic nanostructure
تعداد نتایج: 231593 فیلتر نتایج به سال:
We describe a systematic and efficient method of determining pseudo-atom positions and potentials for use in nanostructure calculations based on bulk empirical pseudopotentials (EPMs). Given a bulk EPM for binary semiconductor X, we produce parameters for pseudo-atoms necessary to passivate a nanostructure of X in preparation for quantum mechanical electronic structure calculations. These passi...
We illustrate how the electronic charge reconstruction near the interfaces of metal–strongly-correlatedbarrier–metal devices can lead to a significant enhancement of the thermoelectric response due to the breaking of particle-hole symmetry. We show how one can achieve effective Seebeck coefficients larger than 150 μV/K and effective electronic figures-of-merit ZT higher than 1. Our work shows t...
Nanomaterials derive their electronic, magnetic, and optical properties from specific nanostructure. In most cases, nanostructured materials are defined during the growth, nanofabrication techniques, such as lithography, employed subsequently for device fabrication. Herein, a perspective is presented on different approach creating nanomaterials devices where, after advanced techniques used to d...
The analytical theory of acoustic phonons arising in the layers a nitride-based nanostructure, taking into account presence piezoelectric effect, was developed. Proposed is based on first obtained exact solutions system consisting equation motion for semiconductor medium and Maxwell equation. electronic spectrum renormalized by their interaction with via deformation potentials developed using m...
Hollow Pd/Sn bimetallic nanocrystals were fabricated by a fast one-pot strategy in an oleylamine system. This method produced a fine single crystalline bimetallic hollow nanostructure. The process and influencing factors of the reaction are also discussed in this work. Bimetallic nanoparticles possessing special hollow structures with single-crystalline nature are expected to have particular el...
* Nanostructure Engineering Science and Technology (NEST) Group, University of Canterbury, NZ. † Department of Physics and Astronomy, University of Canterbury, NZ. ‡ Department of Electrical and Electronic Engineering, University of Canterbury, NZ. # Institute of Geological and Nuclear Sciences, Lower Hutt, NZ. $ Industrial Research Ltd, Lower Hutt, NZ. § School of Chemical and Physical Science...
A novel PtFe@Pt core-shell nanostructure with a PtFe bimetallic core and a nanodendrite Pt shell was fabricated through a facile aqueous reduction process. Without any capping agent and/or surfactant, a clean Pt surface can be obtained. The novel nanostrutured crystals show superior electrocatalytic performance towards methanol oxidation due to the enlarged Pt surface area and the modified elec...
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