nanomaterials – Page 2 – TechConnect Briefs

Engineered Nanoparticles in the Environment: Their Fate, Transport and Interaction with Organic Pollutants

Sahle-Demessie E., Zhao A., Grecsek H., U.S. Environmental Protection Agency, US

Nanotechnology has emerged as one of the leading fields in science having tremendous application in diverse disciplines. As nanomaterials become increasingly part of everyday consumer products, it is imperative to measure the potential release during [...]

Concern-Driven Approach to human health risk assessment of nanomaterials: A Nanoparticle Screening Assessment Framework

Bernatchez S., Afghan A., Lai D., Sayre P., Hill M., New Substances Assessment and Control Bureau, CA

The framework proposed here was developed under the Canada-US Regulatory Cooperation Council (RCC) Nanotechnology Initiative and represents a concern-driven approach to focus human health concerns and additional testing requirements for nanoparticles based on their physical [...]

Effect of the Consolidation Techniques on the Mechanical Properties of Nanocrystalline Ti55C45 Powders Prepared by Mechanically Induced Self-Propagating Reaction

Sherif El-Eskandarany M., Al-Hazza A., Al-Hajji L., Shaban E., Al-Rowayeh A., Kuwait Institute for Scientific Research, KISR, KW

A single phase of NaCl-type TiC was obtained after 5 h of ball milling. To decrease the powder and grain sizes, the synthesized material was subjected to further ball milling time. The powders obtained after [...]

Synthesis and Characterization of Novel Multifunctional SiO2 nanoparticles

Aslan A., Bozkurt A., Soydan A.M., Ata A., Gebze technical university, TR

In the present work, azole functional silica nanoparticles synthesized and characterized. For the preparation of azole functional SiO2, a two-step method based on hydrolyzed of TEOS was used in this study. The epoxy functional SiO2 [...]

Layer-on-layer Assembly of Macroscopic 2D and 3D Carbon Nanomaterial Architectures

Patel S.C., Lalwani G., Alam O., Grover K., Qin Y-X, Sitharaman B., Stony Brook University, US

Although carbon nanomaterials are often labeled as the future replacement for silicon in electronics and a new generation of robust materials, there are major shortcomings in the assembly of carbon nanomaterials into higher order structures. [...]

NanoSAR: Linking the structure of engineered nanomaterials with their toxicity

Oksel C., Ma C.Y., Wang X.Z., University of Leeds, UK

As the production and use of engineered nanomaterials (ENMs) are increasing, we are approaching the point at which it is impossible to individually assess the toxicity of a vast number of ENMs. Considering the large [...]

Comparison of carbon nanotube data collected using two microscopy methods: dark-field hyperspectral imaging and electron microscopy

Eastlake A.C., Geraci C.L., NIOSH, US

Currently, the National Institute for Occupational Safety and Health (NIOSH) Nanotechnology Research Center uses a modified version of the NIOSH Manual of Analytical Method 7303 (Elements by ICP) and electron microscopy (either scanning or transmission) [...]

A New Separation Metric for the Optimization of AF4 Separations of Polydispersed Nanomaterials

Galyean A.A., Vreeland W.N., Filliben J.J., Holbrook R.D., Weinberg H.S., University of North Carolina at Chapel Hill, US

The development of standardized and optimized methods to monitor the behavior of engineered nanomaterials (ENMs) in complex environments is considered a critical component in ENM risk assessment. Robust, rigorously optimized methods are currently lacking, in [...]

Nanomaterial Characterisation Challenges

Kippax P.G., Clarke P.G., Murphy C.C., Kaszuba M., Malvern Instruments Ltd, UK

There has been a large amount of research and investment into the toxicological effects of nanomaterials on the environment and there is – as yet – no definitive findings on the relative weighting and importance [...]

A New Separation Metric for the Optimization of AF4 Separations of Polydispersed Nanomaterials

Galyean A.A., Vreeland W.N., Filliben J.J., Holbrook R.D., Weinberg H.S., University of North Carolina at Chapel Hill, US

The development of standardized and optimized methods to monitor the behavior of engineered nanomaterials (ENMs) in complex environments is considered a critical component in ENM risk assessment. Robust, rigorously optimized methods are currently lacking, in [...]