Papers – Page 46 – TechConnect Briefs

Advancing Sustainable Manufacturing of Carbon Nanomaterials and Devices through Life Cycle Assessment

Shih W-S, Chappell M.A., Kennedy A.J., Brewer Science, Inc, US

Responsible development of nanotechnology and fostering nanotechnology into products for commercial and public benefit are two of the four long-standing National Nanotechnology Initiative (NNI) goals [1]. To achieve these goals, nanotechnology-related environmental, health, and safety [...]

The aging and release of pristine and functionalized carbon nanotubes from epoxy-nanocomposites during accelerated weathering

Sahle-Demessie E., Han C., Zhao A., Gagliardi N., U.S. Environmental Protection Agency, US

Epoxies are widely used in various applications, including coatings, electronics insulations, and waterproofing applications due to their excellent properties such as good adhesion, electrical insulation, and heat resistance along with the strong mechanical property. Currently, [...]

Canada’s Approach for Assessment of Nanomaterials in Commerce : Prioritization and Tools for Assessing Consumer Exposure

Zhang Y., L. Lemieux C., Zein Aghaij M., Vladisavljevic D., Hill M., Health Canada, CA

Given the ever increasing use of manufactured nanomaterials (MNMs) worldwide, Health Canada and Environment and Climate Change Canada have undertaken an initiative to prioritize and assess nanomaterials in commerce in Canada for risk to human [...]

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 [...]

Effects of III-V Semiconductor Nanowires on Human Lung Cancer Cells

Abariute L., Prinz C.N., Lund University, SE

Nanotechnology empowers existing technologies and enriches the effectiveness of new applications. One of the great examples are III-V semiconductor nanowires (NW), which have a broad application range, from electronics and energy-conversion to biological applications [1]. [...]

Nanoparticles and Nano-polymer Composite Interactions with Microbial Biofilm

Sahle-Demessie E., Jing H., Sorial G.A., U.S. Environmental Protection Agency, US

Environmental biofilms are efficient binding matrices for nanoparticles (NPs) and this can be attributed largely to the extracellular polymeric substances (EPS) that hold biofilms together. There is a significant accumulations of NPs occurred in biofilms [...]

Photocatalytic activity of nanotubular TiO2 films obtained by anodic oxidation: a comparison in gas and liquid phase

Sanabria B.E., Strini A., Schiavi L., Diamanti M.V., Pedeferri M.P., Politecnico di Milano, IT

The immobilization of nanostructured photocatalysts is of great importance in the purification of both polluted air and liquids (e.g. industrial wastewaters). Titanium dioxide films with nanotubular morphology and good photocatalytic efficiency in both environments can [...]

Wear-resistant coatings for solar cell panels

Song K., Arizona State University, US

This research studied the relationship between nano-particle orientation and wear resistance. Nano-particle orientations were tailored through flow-assisted spray technical and parallel, randomly distributed, and preferentially vertical configurations were achieved. Surface damage tests were managed using [...]

Solid-Liquid Work of Adhesion

Gulec S., Tadmor R., Das R., Liu J., N'guessan H., Shah M., Wasnik P., Yadav S.B., Lamar University, US

Centrifugal Adhesion Balance (CAB) is used for measuring directly solid-liquid work of adhesion by inducing an ever-increasing normal force which pulls on the droplet while keeping zero lateral force until the liquid-solid contact area starts [...]

Combining a Fluoroalkylsiloxane and Ion Implantation for Hydrophilic/Hydrophobic Patterning

Cook M.J., Johnston J.H., Leveneur J., Victoria University of Wellington, NZ

We present a novel method of producing hydrophilic/hydrophobic patterning on several different substrates using a novel two-step process. The developed process involves a simple surface functionalization with a fluoroalkylsiloxane (FAS), followed by masked ion implantation. [...]