nanowires – Page 4 – TechConnect Briefs

Phonon-assisted tunnelling mechanism of conduction in SnO2 and ZnO nanowires

Ohlckers P., Pipinys P., Vestfold University College, NO

Non-linear temperature-dependent current-voltages characteristics of SnO2 nanowires measured by Ma et al [2005 Solid State Commun 130 313] and single ZnO nanorods from {J.Y. Park et al., 2006 Nanotechnology 17 1255] are explained by the [...]

Iridium Oxide Nanowire Monitors for Protein Detection

Venkatraman V.L., Reddy R.K., Zhang F., Hsu V., Ulrich B., Prasad S., Portland State University, US

The overarching research objective is the development of a “point-of-care” immunoassay device based on iridium oxide nanowires for disease state identification to predict human health outcomes. This device is based on electrical detection of proteins [...]

A Comparative Analysis of Iridium Oxide Nanowires in Electrical Detection of Biochemical Reactions

Venkatraman V.L., Reddy R.K., Zhang F., Hsu V., Ulrich B., Prasad S., Portland State University, US

Pt, Ir, Au and few other precious metals have highly conducive electrical and chemical properties; hence have been widely used in pH sensors and biomolecular sensing applications. The chief objective of this research is to [...]

Formation of Pyrophoric _-Fe Nanoparticles from Fe(II)-Oxalate

Shende R., Vats A., Doorenbos Z., Kapoor D., Puszynski J., South Dakota School of Mines & Technology, US

The formation of pyrophoric Fe-nanoparticles from Fe(II)-oxalate decomposition under H2 atmosphere was the main objective of this research. Iron oxalate was synthesized by controlled nucleation process involving addition of oxalic acid in the FeCl2.2H2O solution [...]

Nano-Biotechnology toward Diagnostic Industry: Obstacles and Opportunities

Esfandyarpour H., Stanford, US

Biosensing of infectious agents should be ideally real-time, multiplexed, sensitive and specific. While no single device thus far have demonstrated superiority with respect to all these qualities, many of the upcoming nanomaterial-based sensors described in [...]

Nanowire Array Technologies for Investigation of Neural Activity

Saha S., Silverberg J., O'Malley D., Menon L., Northeastern University, US

Nanostructures are expected to play a key role in the fundamental investigation of neuronal activity at the nanoscale level. Neurons are complex structures with feature sizes ranging from the millimeter to micron to nanoscale regimes. [...]

Delivery of Shiga Toxin 1 A Subunit into Epithelial Cells Using Silica-Based Nanowires

Kwon N.H., Beaux M., Sheng H., Ebert C., Wang L., McIlroy D.N., Hovde C.J., Bohach G.A., University of Idaho, US

Silica-based nanowires were used to introduce the Shiga toxin 1 A subunit (StxA1) into bovine and human epithelial cells. We extended our previous technology which employs fibronectin (Fn) as a ligand to induce integrin-mediated uptake [...]

Dielectric Response in Silicon Nanostructures from first principles

Hamel S., Williamson A., Wilson H., Gygi F., Galli G., Ratner E., Wack D., Lawrence Livermore National Laboratory, US

In the next few years, the typical size of finFET devices used in the microchip industry is expected to be of the order of a few nanometers. This poses formidable challenges, including for optical metrology, [...]

Wide Wavelength tuning of ZnSe Nanostructures by Temperature

Choy W.C.H., Leung Y.P., Jin L., Wang J., The University of Hong Kong, HK

As one of the most important II-VI compound semiconductors with a direct wide band gap, zinc selenide (ZnSe, bulk crystal Eg = 2.7 eV at 300K) [1] exhibits a great potential for various applications. In [...]

InSb and GaInSb nanowires for thermoelectric applications

Ye Q.L., Scheffler R., Kumari J., Leverenz R., NASA Ames Research Center, US

One-dimensional III-V compound semiconductor nanowires are an important class of nanomaterials that possess unique structures, remarkable properties, and great potential in various applications. InSb represents the smallest band-gap III-V compound semiconductor (0.17 eV at room [...]