disorder – TechConnect Briefs

Determination of micro-structural properties with x-ray absorption fine structure

Han S.-W., Park S.H., Yu H.-J., Jeong E.-S., Kim S-H, Kim Y.J., Kim S-H, Kim Y.J., Yi G.-C., Chonbuk National University, KR

We studied the structural properties of ZnO nanostructures with x-ray absorption fine structure (XAFS) to understand the growth mechanism of vertically aligned ZnO nanorods of the average diameter of 50 - 150 nm. The orientation-dependent [...]

Low-T Quantum Transport in Carbon Nanotubes: Role of Vacuum Fluctuations in Loss of Phase Coherence

Gabrielli P.G., Gabrielli S., Gabrielli P.G., Gabrielli S., ENEA, IT

Among the items in the design of new generation of electronic devices there are the measurement and understanding of the current-voltage response of an electronic circuit in which molecular systems like carbon nanotubes (CNTs) act [...]

Study of Alloy Disorder in Quantum Dots through Multi-million Atom Simulations

Klimeck G., Oyafuso F., Boykin T.B., Bowen R.C., von Allmen P., NASA, Jet Propulsion Laboratory, US

A tight binding model which includes s, p, d and s* orbitals is used to examine the electronic structures of an ensemble of dome-shaped In0.6Ga0.4As quantum dots. Given ensembles of identically sized quantum dots, variations [...]

Effects of Backbone Disorder on Electronic Transport in DNA Molecules

Zhong J.X., Oak Ridge National Laboratory, US

A minimal model was recently proposed to explain the gap opening and the semi-conductor behavior in poly(G)-poly(C) DNA molecules. In this model, the large band gap is attributed to the hybridization of the G-G p [...]