nanostructures – Page 2 – TechConnect Briefs

Analysis of GaN Grown on Vertically Standing Fractal-Like Si Nanostructures

Wee Q.X., Soh C.B., Zang K.Y., Chua S.J., Thompson C.V., National University of Singapore (NUS), SG

We have investigated the microstructure and optical properties of GaN grown on vertically standing Si nanostructures by MOCVD. The Si nanostructures array is formed by a simple metal-assisted etching of Si(111) substrates, where both metal [...]

A New Type of Carbon Nanostructure Formed Within a Metal-Matrix

Salamanca-Riba L., Herzing A., Mansour A., Hall A., Forrest D.R., LeMieux M., Shugart J., University of Maryland, US

Recent advances in nanomanufacturing have made it possible for large amounts (up to 6 wt.%) of carbon to be incorporated as nanoscale carbon during a reaction process in molten metals. These materials are called “covetics”. [...]

Spectrally-Selective Light-Induced Release from Gold-Coated Liposomes

Leung S.J., Romanowski M., University of Arizona, US

To address unmet medical needs in the area of controlled delivery, we recently presented liposome-supported plasmon resonant gold nanoshells. These composite structures are degradable into components of a size compatible with renal clearance, potentially enabling [...]

Nanomaterials can influence living biological systems with nanometer sensitivity

Sabella S., Brunetti V., Maiorano G., Rizzello L., Sorce B., Vecchio G., Galeone A., Cingolani R., Pompa P.P., Italian Institute of Technology, IT

We show the different response of human neuroblastoma cells line to gold surfaces with different levels of nanoroughness, finding out that neurons are capable to sense and actively respond to these nanotopography features, with a [...]

Biofilm Floc Nanostructures in Biological Wastewater Treatment in Fisheries

Shriniwas B.D., Sharma R., RTM University of Nagpur, IN

Biological wastewater treatment modelling has become and important tool in process engineering. There are state of the art activated sludge models (ASMs) available, which have found wide application in the engineering community. Biofilm nanomodels have [...]

Hydrothermal Growth of ZnO Nanostructures Using Zinc Thin Films as Seed Layer

Yang J-Y, Cheng H-W, Cheng T.-C., Cheng H-W, Cheng T.-C., Li Y., National Chiao Tung University, TW

Different zinc oxide nanostructures are selectively synthesized by a simple reaction of zinc acetate dihydrate with hexamethyltetramine (HMT) under mild hydrothermal conditions using zinc thin films as seed layer. Scanning electron microscopy (SEM) result of [...]

Nanopatterned Organic Materials for Photovoltaic Devices

Williams S.S., Hampton M.J., Retterer S.T., Templeton J.L., Samulski E.T., DeSimone J.M., University of North Carolina at Chapel Hill, US

In order to further increase the efficiency of current state-of-the-art photovoltaic devices, the interfacial architecture must be controlled at the nanoscale such that the D/A blend results in an ideal morphology for maximizing charge collection [...]

Long-Range Interactions in Quasi-One Dimensional Cylindrical Structures

Tatur K., Woods L.M., University of South Florida, US

Casimir forces originating from vacuum fluctuations of the electromagnetic fields are of increasing importance in many scientific and technological areas. The manifestations of these long-range forces at the nanoscale have led to the need of [...]

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 [...]

Novel Flame-Gradient Method for Synthesis of Metal Oxide Nanomaterials

Merchan-Merchan W., Saveliev A.V., Desai M., The University of Oklahoma, US

Various transition metal oxide nanostructures are synthesized using a novel probe-flame gradient method. An opposed flow flame of methane and oxygen enriched air provides a hightemperature reacting environment forming various structures directly on the surface [...]