We have investigated the growth of ZnO nanowires on curved BaTi03 retroreflector beads, as well as grov.1h of ZnO nanowires on flat substrates. Results indicate that the growth of ZnO aligned nanowire arrays occurs farther away from the Zn source in the retroreflectors, while the results are opposite for the flat Si substrates. In the case of the ZnO nanowires on flat Si, the nanowires formed i...

One of the most attractive and challenging features of materials research on the nanometer scale is the possibility to rationally design and fabricate novel functionalities, largely away from the ever demanding trial-and-error approach. Ministry of Economy, Trade and Industry (METI) and New Energy and Industrial Technology Development Organization (NEDO), Japan, launched in the year 2001 the Sy...

In this article, SnO2 nanowires (NWs) have been prepared and their microwave absorption properties have been investigated in detail. Complex permittivity and permeability of the SnO2 NWs/paraffin composites have been measured in a frequency range of 0.1–18 GHz, and the measured results are compared with that calculated from effective medium theory. The value of maximum reflection loss for the c...

We present theoretical studies of optical properties of Ga1−xInxAs self-assembled quantum-wires (QWR’s) made of short-period superlattices with strain-induced lateral ordering. Valence-band anisotropy, band mixing, and effects due to local strain distribution at the atomistic level are all taken into account. Using realistic material parameters which are experimentally feasible, we perform simu...

A novel 3,8-bis-terthiophenyl-(1,10-phenanthroline) coordinated to [Ru(bpy)2] was synthesized and characterized by electrochemical and spectroscopic techniques, and shown to be a suitable starting material for the electrodeposition of functionalized molecular wires in between nano-gap electrodes, generating stable molecular nano-devices. Temperature dependent nonlinear I-V curves were obtained ...

Assorted analytical and spectroscopic techniques for the optimization of the defects related properties in size-controlled ZnO nanowires Kin Mun Wong, Yaoguo Fang, André Devaux, Liaoyong Wen, Jian Huang, Luisa De Cola, and Yong Lei Institute of Materials Physics and Center for Nanotechnology, University of Muenster, Wilhelm-KlemmStr. 10, 48149 Muenster, Germany Institute of Nanochemistry and Na...

The electronic conductance at zero temperature through a quantum wire with side-connected asymmetric quantum ring (as a scatter system) is theoretically studied using the non-interacting Hamiltonian Anderson tunneling method. In this paper we concentrate on the configuration of the quantum dot rings. We show that the asymmetric structure of QD-scatter system strongly influences the amplitude an...

Charge transport through a molecular junction comprising an oligomer of p-phenylene-vinylene between gold contacts has been investigated using density-functional theory and the nonequilibrium Green’s function method. The influence of the contact gap geometry on the transport has been studied for elongated and contracted gaps, as well as various molecular conformations. The calculated current-vo...

We herein describe a method of depositing hemoglobin (Hb) and sulfonated polyaniline (SPAN) on GC electrodes that facilitate interfacial protein electron transfer. Well-defined, reproducible, chemically reversible peaks of Hb and SPAN can be obtained in our experiments. We also observed enhanced peroxidase activity of Hb in SPAN films. These results clearly showed that SPAN worked as molecular ...

In the search of molecular wires suitable for the construction of nanocircuits several molecules have been considered as feasible candidates with this goal. However, single wall carbon nanotubes (SWCNT) are probably the best option mainly due to their excellent conductor properties. But their difficult synthesis and poor chemistry play against the use of this material. Another candidate that ha...