aerosol – TechConnect Briefs

Aerosolization of Carbon Nanotubes Using an Acoustic Generator: Particle Generation and Properties

Eileen Birch M., Ku B.K., CDC/NIOSH, US

With increasing applications and global production of carbon nanomaterials, there is a growing concern about workplace exposure. The National Institute for Occupational Safety and Health (NIOSH) has recommended a working lifetime exposure limit (REL of [...]

Characterization of Screen-Penetrating Aerosol Fibers and Their Alignment in an Electric Field

Deye G., Ku B.K., Turkevich L.A., NIOSH, US

Length classification of airborne fibers, including carbon nanotubes/nanofibers, is a fundamental technology important for toxicology studies of these materials. Fiber toxicity appears to depend on fiber concentration, dimensions (diameter and length) and durability in the [...]

Nano-Silicon and Non-Oxide Ceramics Synthesis via Gas-phase Sodium Reduction Aerosol Reactor

Kodas T., Kutsovsky Y., Massey K., Schimmoeller B., Smith G., Cabot Corporation, US

The largest volumes of nano-particles in consumer products include carbon black for reinforcement applications (e.g. tires), silicon dioxide (SiO2) as rheology agent (e.g. silicones) and titanium dioxide (TiO2) in pigments and photocatalysts. All of those [...]

Lipopolymeric nanoparticles: platform technology for aerosolized combination chemotherapy

Banerjee R., Kaur S., Indian Institute of Technology - Bombay, IN

In the present study, we have conceptualized and formulated a novel delivery vehicle which includes a combination of lipid nanovesicles and polymeric nanoparticles. Main aim of the study is to devise a nanoscale platform technology [...]

Aerosol-based fabrication of modified chitosans and their application for gene transfection

Byeon J.H., Roberts J.T., Purdue University, US

Droplets containing modified chitosans were formed by collison atomization, dried to form solid particles, and collected and studied for potential use as nanocarriers (Figure 1). Modified chitosans consisted of a chitosan backbone and an additional [...]

Template-Free Single-Step Fabrication of Metal Oxide Hollow Nanospheres and Nanofoams

Jiang X., Changzhou University, CN

Hollow nanospheres and nanofoams possess characteristics such as low density, high surface area and adjustable refractive index that make them attractive to tune their mechanical, optical, electrical, and chemical properties for applications ranging from drug [...]

Structure-Property Correlations in ZnO Tetrapods and Spheres prepared by Chemical Vapour Synthesis

Bacsa R., Bacsa W., Dexpert J., Serp P., Verelst M., CEMES CNRS Univ Toulouse, FR

ZnO is a direct band gap semiconductor that finds applications in varistors and arrestors. Efficient luminescence in the UV of high purity nanocrystalline ZnO nanoparticles (20-50nm) is used in medicine and in the cosmetic industry [...]

Synthesis of visible light active nanocrystalline bismuth oxide based photocatalysts

Akurati K.K., Graule T., Reifler F., Ritter A., Vital A., Swiss federal laboratories for materials science & technology, EMPA, CH

Photocatalysis phenomenon has attracted considerable interest in recent years because of its usage in water purification, environmental cleaning, solar energy conversion and generation of alternative energy resources. To date, TiO2 has undoubtedly proven to be [...]

Measuring Nanoparticle Size Distributions in Real-Time: Key Factors for Accuracy

Erickson K., Osmondson B., Singh M., TSI Incorporated, US

The benefits of sizing aerosolized submicrometer particles using an electrical mobility sizing technique have been well documented. This type of analytical tool has been found to be able to measure particle diameter with an uncertainty [...]

Photochemical Alteration of the Stability of Polymer Nano-Agglomerates

Braun A.M., Kasper G., Rothenbacher S., Salas-Vicente J., Seipenbusch M., Weber A.P., University of Karlsruhe, DE

Interparticle adhesion in the nano-regime leads to undesired stable agglomerates in particulate products. On one hand, the high surface energies of nanoparticles favor the reduction of overall surface area by maximization of the number of [...]