US – Page 241 – TechConnect Briefs

Systematic Quantitative Characterization of Surface Nanostructures

Al-Mousa A., Niemann D.L., Gunther N.G., Rahman M., Santa Clara University / PDF Solutions, US

In this paper, a systematic analysis technique is presented and applied to Atomic Force Microscopy (AFM) data. Our technique isolates surface nanostructures and extracts quantitative information such as their shape and size. Examples of features [...]

Environmental Digital Pulsed Force Mode AFM in Biomedical Coatings Research

Haugstad G., Wormuth K., University of Minnesota, US

We report ongoing methodological developments using Digital Pulsed Force Mode AFM of model coatings containing the drug dexamethasone dispersed in polylactide (biodegradable), poly(butylmethacrylate) (PBMA), and PBMA/poly(laurel methacrylate) (PLMA) blends. Studies include (1) multi-technique analyses, understanding [...]

Organic Solvent Dispersed TiO2 Nanocrystal Sol: Synthesis and Characterization

Rao Y.Q., Antalek B., Minter J., Mourey T., Blanton T., Slater G., Slater L., Slater G., Slater L., Fornalik J., Eastman Kodak Company, US

Anatase TiO2 nanocrystals with a mean diameter of about 10 nm were successfully synthesized through a non-aqueous sol gel route without the use of air free equipments. The nanocrystals were well dispersed in organic solvents [...]

Synthesis and Characterization of Anodized Titanium Oxide Nanotubes Arrays

Hu M.Z., Lai P., Bhuiyan M.S., Tsouris C., Gu B., Paranthaman M.P., Gabitto J., Prairie View A&M University, US

Anodized titanium oxide containing highly ordered, vertically oriented TiO2 nanotube arrays is a nanomaterial architecture that shows promise for diverse applications. In this paper, an anodization synthesis using HF-free aqueous solutions is described. The anodized [...]

Selective Multiterminal Sensor on Individual ZnO Nanotetrapod

Lupan O., Chow L., Chai G., Trofim V., University of Central Florida, US

Low-cost, nonpoisonous and highly sensitive and selective sensors are needed for detection of various gases in the environment. ZnO tetrapod have potential application as chemical sensors. Our current experiments have shown that ZnO tetrapod sensor [...]

Catalyst assisted zinc oxide nanowires for gas sensors

Joshi R.K., Kumar A., University of South Florida, US

We present the room temperature detection of 100 ppm carbon monoxide using metal ( Pd and Au) decorated Zinc Oxide (ZnO) nanowires. Zin oxide nanowires were grown via Vapor Liquid Solid method whreas the palladium [...]

Strain Driven Growth of Zinc Oxide Nanowires on Sapphire: Controlling Horizontal vs. Standing Growth

Nikoobakht B., Eustis S., National Institute of Standards and Technology, US

Recently we showed large scale fabrication of field-effect transistors from horizontal ZnO nanowires (NWs) on a-plane sapphire. We are interested in understanding the factors that induce the unique growth direction of horizontal ZnO NWs and [...]

Synthesis of Self-aligned Tungsten Nanowires on Single Crystalline Tungsten Substrates

Wu W., Yu Q., Pei S-S, University of Houston, US

Metallic nanowires have attracted much attention due to their unique mechanical, magnetic, optical and electronic properties, and their function as well-defined building blocks for nanodevices.1-3 Tungsten (W), in particular, is of great interest, being promising [...]

Synthesis of novel ferrite foam materials for water-splitting application

Shende R.V., Puszynski J.A., South Dakota School of Mines & Technology, US

Globally increasing energy demands with reduced emission of greenhouse gases require the use of more sustainable energy sources. One of the technically viable sustainable energy technologies is based on the thermochemical water-splitting process utilizing redox [...]

Formation of Ni/NiO core/shell nanostructures and their attachment on carbon nanotubes

Chopra N., Claypoole L., Bachas L.G., University of Alabama, US

We report a facile wet synthesis method coupled with microwave irradiation to successfully control the morphology of Ni/NiO core/shell nanoparticles. Furthermore, we report for the first time, microwave-based synthesis of hollow NiO nanostructures from Ni [...]