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Topic Area: Nanomaterials
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1. Discriminating the states of matter in metallic nanoparticle transformations: What are we missing?
Topic: Nanomaterials
Published: 2/20/2013
Authors: John M. Pettibone, Julien Claude Maurice Gigault, Vincent A Hackley
Abstract: A limiting factor in assessing the risk of current and emerging nanomaterials in biological and environmental systems is the ability to accurately detect and characterize their size, shape and composition in broad distributions and complex media. Asy ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913009

2. Real-Time Size Discrimination and Elemental Analysis of Gold Nanoparticles using ES-DMA coupled to ICP-MS
Topic: Nanomaterials
Published: 1/22/2013
Authors: Sherrie R. Elzey, De-Hao Tsai, Lee Lijian Yu, Michael R Winchester, Michael E Kelley, Vincent A Hackley
Abstract: We report the development of a hyphenated instrument with the capacity to quantitatively characterize aqueous suspended gold nanoparticles (AuNPs) based on a combination of gas-phase size separation, particle counting, and elemental analysis. A custo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912171

3. Measurement of Scattering and Absorption Cross Sections of Microspheres for Wavelengths between 240 nm and 800 nm
Series: Journal of Research (NIST JRES)
Report Number: 118.001
Topic: Nanomaterials
Published: 1/10/2013
Authors: Lili Wang, Steven J Choquette
Abstract: A commercial spectrometer with a 150 mm integrating sphere (IS) detector was used to measure the scattering and absorption cross sections of polystyrene monodisperse microspheres suspended in water. Absorption measurements were performed with the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909635

4. Differentiation and characterization of isotopically modified silver nanoparticles in aqueous media using asymmetric-flow field flow fractionation coupled to optical detection and mass spectrometry
Topic: Nanomaterials
Published: 12/10/2012
Authors: Julien Claude Maurice Gigault, Vincent A Hackley
Abstract: The principal objective of this work was to develop and demonstrate a new methodology for silver nanoparticle (AgNP) detection and characterization based on asymmetric-flow field flow fractionation (A4F) coupled to multiple detectors and using stable ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912174

5. Capillary Wave Dynamics of Thin Polymer films over Submerged Nanostructures
Topic: Nanomaterials
Published: 11/16/2012
Authors: Christopher L Soles, Hyun Wook Ro, K. J. Alvine, Oleg Shpyrko, Yenling Dai, Alec Sandy, Suresh Narayanan
Abstract: The surface dynamics of thin molten polystyrene films supported by nanoscale periodic silicon line-space gratings were investigated with X-ray photon correlation spectroscopy. Surface dynamics over these nanostructures exhibit high directional aniso ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910869

6. Gold nanorod separation and characterization by asymmetric-flow field flow fractionation with UV-Vis detection
Topic: Nanomaterials
Published: 11/14/2012
Authors: Julien Claude Maurice Gigault, Tae Joon Cho, Robert I MacCuspie, Vincent A Hackley
Abstract: The application of asymmetrical-flow field flow fractionation (A4F) for gold nanorod (GNR) fractionation and characterization was comprehensively investigated. We report on two novel aspects of this application. The first addresses the analytical cha ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911860

7. Controlling the size and the activity of Fe particles for synthesis of carbon nanotubes
Topic: Nanomaterials
Published: 11/1/2012
Authors: See-Wee Chee, Renu Sharma
Abstract: The properties of carbon nanotubes (CNTs) are controlled by their structure and morphology. Therefore, their selective synthesis, using catalytic chemical vapor deposition, requires precise control on a number of parameters including the size and act ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909566

8. Giant piezoelectricity in PMN-PT thin films: Beyond PZT
Topic: Nanomaterials
Published: 11/1/2012
Authors: S. H. Baek, M. S. Rzchowski, Vladimir A Aksyuk
Abstract: Micro-electromechanical systems (MEMS) incorporating piezoelectric layers provide active transduction between electrical and mechanical energy, which enables highly sensitive sensors and low-voltage driven actuators surpassing the passive operation o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912113

9. Quantifying Dithiothreitol Displacement of Functional Ligands from Gold Nanoparticles
Topic: Nanomaterials
Published: 10/27/2012
Authors: De-Hao Tsai, Frank W DelRio, Sherrie R. Elzey, Suvajyoti S. Guha, Michael Russel Zachariah, Vincent A Hackley, Melanie P Shelton
Abstract: Dithiothreitol (DTT)-based displacement is widely utilized for separating ligands from their gold nanoparticle (AuNP) conjugates, a critical step for differentiating and quantifying surface-bound functional ligands and therefore the effective surface ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911354

10. Aggregation/agglomeration state of carbon nanotubes
Topic: Nanomaterials
Published: 10/12/2012
Authors: Vivek M Prabhu, Toshiya Okazaki, Takeshi Eitoku, Masayoshi Tange, Haruhisa Kato
Abstract: Evaluation of aggregation and agglomeration of carbon nanotube (CNT) solution has been one of the key issues for applications. Here we introduce a simple method based on depolarized dynamic light scattering (DDLS) performed at multiple scattering ang ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912177