separation – TechConnect Briefs

Silicon Nanowire Vertical Arrays with Porous Top Electrodes for Trace Vapor Preconcentration and Partial Separation

Giordano B., Pehrsson P., Johnson K., U.S. Naval Research Laboratory, US

Commercial Off the Self (COTS) technologies for chemical vapor detection of trace analytes in complex, unknown background environments, often underperform with respect to sensitivity and selectivity. We have developed a chemical preconcentrator based on a [...]

Novel Onboard Flotation for Spilled Oil Recovery under Artic and Gulf of Mexico Conditions

Shi F., Duan Y., Soong Y., Gray M., National Energy Technology Laboratory, US

Preventing oil spills is a top priority for the oil and gas industry, and the ability to avert and respond to oil spills is essential for obtaining an operating license. Oil spill response is a [...]

Progress towards total structure control in SWCNT populations

Fagan J., National Institute of Standards and Technology, US

As-synthesized single-wall carbon nanotube (SWCNT) populations contain substantial distributions of SWCNT structures, including in the distribution of species ((n,m) chiralities) and enantiomers (i.e. the handedness of the lattice vector), as well as in their lengths, [...]

Helping nano-entities discover their nano-identity

Castro A., Leeman M., Runyon J.R., Nilsson L., Ulmius Storm M., SOLVE Research and Consultancy AB, SE

Nanoscale materials are becoming increasingly prevalent in our lives. The strategies required to characterize the properties and performance of nanoscale materials can be as unique as the material itself. We have experienced that separation of [...]

Membrane Dehydrators for Efficient Water Contamination Control in Lubricating and Hydraulic Fluid

Majumdar S., DiNetta L.C., Compact Membrane Systems, Inc., US

Ingression of water or ambient moisture over time into industrial lubrication and hydraulic fluid systems causes major operational and maintenance problems. Water can be present in such systems as free, dispersed and dissolved water. The [...]

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 [...]

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 [...]

An emerging method for the separation and characterisation of manufactured nanoparticles in complex environmental samples

Chekli L., Phuntsho S., Kandasamy J., Shon H., University of Technology Sydney, AU

Manufactured nanoparticles (MNPs) are increasingly released to the environment. In spite of this growth, information about the fate and toxicity of nanoparticles in the environment is limited, partly due to the lack of techniques capable [...]

Capillary Electrophoresis in Nanofluidic Channels

Atzberger P.J., Gibou F., Pennathur S., university of california, santa barbara, US

Electrophoretic separation in nanofluidic channels exhibits significant differences with microfluidics. We discuss a theoretical / experimental collaboration investigating particle separation by electropohoresis in nanochannels. Recent experimental results in the laboratory of our collaborator Dr. Pennathur [...]

Scalable Single Walled Carbon Nanotube Separation: from Process to Product

Fogden S., Kim K.C., Ma C., McFarlane G., Linde Electronics, US

The extraordinary electronic and optical properties of single walled carbon nanotubes (SWNTs) are determined by their structure; SWNTs are1 either metallic or semiconducting depending on their diameter and chirality . Many valuable applications in, for [...]