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New Vapor-Particle Separator Improves Understanding of Aircraft Engine Combustion and Particulate Emissions A new apparatus has been developed by ORNL researchers to efficiently separate volatile particles from condensible vapors in aircraft engine emissions. The technology enables high-precision emissions research, generating insightful data that helps improve the scientific understanding of the…

Microbially Mediated Method for Making Semiconductor Nanoparticles To address the commercial need for bulk production at a reasonable cost, ORNL researchers developed a microbially mediated method for the production of semiconductor nanoparticles. This invention also offers a means of microbial synthesis that yields a purer and more uniform product. Nanoparticles with metal non-oxide composition…

: Fact Sheets
: Production, Semiconductor, Metal...

High-Gradient Permanent Magnetic Separator for Particle Collection If inhaled into the respiratory system, nanometer-sized particulate pollutants may cause adverse health effects in humans. Commercially available particle collectors can monitor ambient air quality, worker health and safety, and process manufacturing, whereas personal particulate monitors equipped with small vacuum pumps are avail…

: Fact Sheets
: Particle, Centrifuge, Monitoring...

Internal Labeling Technique Tracks Nanoparticle Transport To track the transport of nanoscale particles and core-shell particles in biological and environmental systems, ORNL researchers developed a way to insert a radioisotope or a fluorophore into the particle as an observable marker. Internalized labeling of nanoparticles leaves the surface intact and available for functionalization with a h…

: Fact Sheets
: Nanoparticle, Metal, Labeling...

Functionalized Gold Nanoparticles for Rapid, Ultra- sensitive Detection of Environmental Pollutants A rapid, highly sensitive, inexpensive method to detect and identify specific hazardous environmental pollutants has been invented by ORNL researchers. The method uses gold nanoparticles, modified and positively charged by an amine group, to identify hazards such as perchlorates, nitrates, and some…

: Fact Sheets

Real Space Mapping of Oxygen Vacancy Diffusion and Electrochemical Transformations by Hysteretic Current Reversal Curve Measurements Electrochemical energy storage and conversion systems based on solid gas and solid liquid reactions and local bias-induced transformations are a vital component of future energy and information technologies. Development of high- energy and power-density materials ne…

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