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Protocols for Accelerating Laboratory Weathering and Measurements of Degradation of Polymer-Multiwalled Carbon Nanotube Composites

August 3, 2015

Author(s)

Li Piin Sung, Tinh Nguyen

Polymer nanocomposites containing multi-walled carbon nanotubes (MWCNTs) are increasingly or potentially will be used in many large-volume industries. These advanced composites are exposed to severe mechanical and environmental stresses, such that, during

Localization and Number of Au Nanoparticles in Optically Indexed Cells by FIB Tomography

August 2, 2015

Author(s)

Aric W. Sanders, Kavita M. Jeerage, Ann C. Chiaramonti Debay, Alexandra Curtin

Gold nanoparticles (GNPs) are gaining importance as therapeutic chemical delivery vehicles, medical diagnostic tools, phototherapeutic and contrast enhancement agents. GNPs are uniquely suited for these biological uses because of their chemical stability

ADAPTING OECD AQUATIC TOXICITY TESTS FOR USE WITH MANUFACTURED NANOMATERIALS: KEY ISSUES, CONSENSUS RECOMMENDATIONS, AND DATA GAPS

July 16, 2015

Author(s)

Elijah J. Petersen, Alan Kennedy, Greg Goss, Ho Kay, Jamie Lead, Shannon Hanna, Kerstin Hund-Rinke, Brian Mader, Nicholas Manier, Pascal Pandard, Edward Salinas, Kathrin Schwirn, Doris Voelker

The unique or enhanced properties of manufactured nanomaterials (MNs) suggest that their use in nano-enabled products will continue to increase in the future. This will result in increasing potential for human and environmental exposure to MNs, during

Timescale of Silver Nanoparticle Transformation in Neural Cell Cultures Impacts Measured Cell Response

July 7, 2015

Author(s)

Stephanie L. Hume, Ann Chiaramonti Debay, Katherine P. Rice, Rani K. Schwindt, Robert I. MacCuspie, Kavita Jeerage

Serum protein concentration and ionic strength are important factors in nanoparticle transformation within cell culture environments. However, silver nanoparticles are not routinely tracked at their working concentration in the specific medium used for in

Unexpected Changes in Functionality and Surface Coverage for Au Nanoparticle PEI Conjugates: Implications for Stability and Efficacy in Biological Systems

June 26, 2015

Author(s)

Tae Joon Cho, John M. Pettibone, Justin M. Gorham, Thao M. Nguyen, Robert I. MacCuspie, Julien C. Gigault, Vincent A. Hackley

Attached.

Molecular dynamics investigation of the effects of tip-substrate interactions during nanoindentation

June 18, 2015

Author(s)

Francesca M. Tavazza, Thomas Senftle, Chenyu Zou, Chandler A. Becker, Adri van Duin

Nanoindentation in molecular dynamics simulations typically uses a much idealized indenter tip. This tip is often either a single sphere or collection of atoms, both of which are purely repulsive in their interactions with the substrate. It is also assumed

Spin-scattering rates in metallic thin films measured by ferromagnetic resonance damping enhanced by spin-pumping

June 12, 2015

Author(s)

Carl T. Boone, Justin M. Shaw, Hans T. Nembach, Thomas J. Silva

We determined the spin-transport properties of Pd and Pt thin films by measuring the increase in ferromagnetic resonance damping due to spin-pumping in ferromagnetic (FM)-nonferromagnetic metal (NM) multilayers with varying NM thicknesses. The increase in

Broadband frequency-dependent material property measurements with the atomic force microscope

June 8, 2015

Author(s)

Ryan B. Wagner, Jason P. Killgore

The atomic force microscope (AFM) is a widely utilized instrument for measuring nanometer-scale variations in mechanical properties. Most AFM techniques only measure these properties at a single high frequency (e.g. hundreds of kHz on resonance), or at low

Measuring silver nanoparticle dissolution in complex biological and environmental matrices using UV/visible absorbance measurements

June 3, 2015

Author(s)

Justin Zook, Robert MacCuspie, Stephen E. Long, Elijah Petersen

This special publication is one in a series stemming from the National Nanotechnology Initiative (NNI) Nano-EHS Research Strategy which identified Nanomaterial Measurement Infrastructure as one of the essential areas of research needed in order to develop

Reconstitution of 2 nm diameter Silicon Nanoparticles (RM8027) into aqueous solvents

June 3, 2015

Author(s)

Vytautas Reipa

NIST recently has released a SiNP reference material RM8027 that consists of five hermetically sealed pre-scored glass ampoules, each containing nominally 1 ml of cyclohexane-stabilized SiNPs suspended in toluene. The suspension contains particles

Utilizing Nearest-Neighbor Interactions to Alter Charge Transport Mechanisms in Molecular Assemblies of Porphyrins on Surfaces

May 27, 2015

Author(s)

James G. Kushmerick, Amanda E. Schuckman, Lisa M. Perez, Mikki Vinodu, Joao Tome, Lam H. Yu, Charles M. Drain, James D. Batteas

When tunneling is the dominant mechanism of charge transport in a molecular junction, the conductivity of the junction is largely insensitive to chemical and structural perturbations which do not impact the overall length of the junction. This severely

Control experiments to avoid artifacts and misinterpretations in nanoecotoxicology testing

May 22, 2015

Author(s)

Elijah J. Petersen

Measuring the Size of Nanoparticles in Aqueous Media Using Batch-Mode Dynamic Light Scattering

May 6, 2015

Author(s)

Vincent A. Hackley, Jeffrey D. Clogston

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