nanomaterials – TechConnect Briefs

Diatom Frustules as Substrates for Photocatalysts

Day N., Olsen J., Thiebes J., Polliack A., Diatomix, US

Nanomaterials are quickly becoming highly useful for many applications. The public is concerned with the long-term effects of nanomaterials in the environment. Composite materials as substrates for nanoparticles can be tailored to maintain functionality as [...]

Update on evaluation of enhanced darkfield microscopy and hyperspectral mapping for analysis of airborne nanoparticulate collected on filter-based media

Neu-Baker N.M., Eastlake A., Brenner S.A., State University of New York Polytechnic Institute, College of Nanoscale Science, US

Current best-known methods for engineered nanomaterial (ENM) exposure assessment in occupational environments include the capture of airborne ENMs onto filter media.1–3 The current standard method for the analysis of filter media is direct visualization via [...]

Functionality and degradation of 3D-printed polymeric scaffolds for mandibular reconstruction and vascularized bone tissue repair

Bulusu K.V., Holmes B., Paulson P., Zhang L.G., Plesniak M.W., The George Washington University, US

One of the greatest challenges in field of maxillofacial and craniofacial reconstruction is to quickly and adequately induce a vascular network within any large sections of repaired bone tissue. In this study we are addressing [...]

Nanomaterials in Food and Food Contact Substances – Hazards, Risks and Regulation

Cohen J., Gradient, US

The increasing number and variety of engineered nanomaterials (ENMs) used in food and food contact materials raise concerns regarding potential hazards and risks to human health. ENMs are used for a wide variety of applications [...]

Two routes for cobalt doping in ZnO nanostructures

Hari P., University of Tulsa, US

Two routes for cobalt doping in ZnO nanostructures Controlled growth of ZnO nanorods on various substrates is of great importance in photonic and electronic devices. Also of interest is increasing the optical activity of zinc [...]

Advanced Characterization of Nanoporous Gold

El-Zoka A.A., Newman R.C., Langelier B., University of Toronto, CA

The interest in nanoporous metals, formed by controlled dealloying of noble metal alloys, has been increasing due to the promising capabilities of such materials. The functionality of NPG is heavily affected by attributes such as [...]

In situ TEM/STEM of the Coarsening of Nanoporous Gold

El-Zoka A.A., Howe J., Newman R.C., Perovic D., University of Toronto, CA

Nanoporous gold (NPG) is usually fabricated by the selective electrolytic dissolution (dealloying) of Ag from a binary Ag-Au alloy, or sometimes from a ternary alloy such as Ag- Au-Pt. The resulting ligament-pore structure is bicontinuous [...]

Novel method for topical and transdermal delivery of Nanomaterials

Kalghatgi S., Juluri A., Stone S., Gray R., EP Technologies LLC, US

Nanoscale drug delivery systems including, but not limited to nanoparticles, liposomes, nanotubes, quantum dots, could potentially revolutionize modern drug delivery systems. Nanomaterials have wide applications in pharmaceutical sciences including their use in drug delivery as [...]

A synergistic approach to the design, fabrication and evaluation of 3D printed micro and nano featured scaffolds for vascularized bone tissue repair

Holmes B., Bulusu K., Plesniak M., Zhang L.G., Nanochon LLC, George Washington University, US

In recent years, 3D printing has become a popular and widely investigated method for the fabrication of large bone implants. 3D printed bone constructs, devices and treatments hold great potential to repair traumatic and chronic [...]

Stable Magnetic Isotopes as New Trend in Nanonuclear Biotechnology

Koltover V., Institute of Problems of Chemical Physics, Russian Academy of Sciences, RU

With dimensions of the order of tens angstroms, biomolecular devices are assigned, in modern terminology, to objects of “nanophysics”. At the same time, all of them are composed from chemical elements many of which have [...]