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Topic Area: Nanotech/Environment, Health
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Displaying records 21 to 30.
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21. Characterization of Nanoparticle Release from Polymer Nanocomposites Due to Fire
Topic: Nanotech/Environment, Health & Safety
Published: 7/6/2011
Authors: Nasir M. Uddin, Marc R. Nyden, Rick D Davis
Abstract: Engineered nanoparticles, such as carbon nanotubes (CNTs) and nanofibers (CNFs) are increasingly being used as fire retardants and performance additives in polymeric materials. However, because of their small size and ability to interact with biologi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908221

22. Hydrodynamic Fractionation of Finite Size Nano Gold Clusters
Topic: Nanotech/Environment, Health & Safety
Published: 6/15/2011
Authors: De-Hao D. Tsai, Tae Joon Cho, Frank W DelRio, Julian S. Taurozzi, Michael Russel Zachariah, Vincent A Hackley
Abstract: We demonstrate a high resolution in situ experimental method for performing simultaneous size-classification and characterization of functional nanoscale gold clusters (NGCs) based on asymmetric-flow field flow fractionation (AFFF). Field emission sc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908232

23. Interlaboratory Reproducibility of Size and Surface Charge Measurements on Nanoparticles prior to Biological Impact Assessment
Topic: Nanotech/Environment, Health & Safety
Published: 6/3/2011
Authors: Gert Roebben, Sonia Ramirez-Garcia, Vincent A Hackley, Matthias Roesslein, Fred Klaessig, Vikram Kestens, Iseult Lynch, C. Michael Garner, Alan Rawle, Allison Elder, Vicky Colvin, Wolfgang Kreyling, Harald Krug, Zuzanna Lewicka, Scott McNeil, Andre Nel, Anil K. Patri, Peter Wick, Tian Xia, Guenther Oberdoerster, Kenneth Dawson
Abstract: The International Alliance for NanoEHS Harmonization (IANH) organises interlaboratory comparisons of methods relevant for a better understanding of the biological impacts of nano-objects, to highlight and remove sources of irreproducibility in existi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905647

24. Predicting Microstructure Development During Casting of Drug Eluting Coatings
Topic: Nanotech/Environment, Health & Safety
Published: 9/19/2010
Authors: David M. Saylor, Jonathan E Guyer, Daniel Wheeler, James A Warren
Abstract: We have devised a novel diffuse interface formulation to model the development of chem- ical and physical inhomogeneities, i.e. microstructure, during the process of casting drug eluting coatings. These inhomogeneities, which depend on the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905206

25. 3D elemental and structural analysis of biological specimens using electrons and ions
Topic: Nanotech/Environment, Health & Safety
Published: 8/26/2010
Author: Keana C K Scott
Abstract: We demonstrate the utility of focused ion beam scanning electron microscopy (FIB SEM) combined with energy dispersive x-ray spectrometry (EDS) for 3-dimensional (3D) morphological and elemental correlative analysis of sub-cellular features. Althoug ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905503

26. Separation and Metrology of Nanoparticles by Nanofluidic Size Exclusion
Topic: Nanotech/Environment, Health & Safety
Published: 8/11/2010
Authors: Samuel M Stavis, Jon C Geist, Michael Gaitan
Abstract: A nanofluidic approach to the separation and metrology of nanoparticles is demonstrated. Advantages of this approach include nanometer-scale resolution, nanometer-scale to submicrometer-scale range, mitigation of hydrodynamic and diffusional limitat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904215

27. PREPARATION OF NANOPARTICLE DISPERSIONS FROM POWDERED MATERIAL USING ULTRASONIC DISRUPTION
Topic: Nanotech/Environment, Health & Safety
Published: 6/9/2010
Authors: Julian S. Taurozzi, Vincent A Hackley, Mark Wiesner
Abstract: This protocol is generic in nature and intended to provide relevant guidelines for the preparation of nanoparticle dispersions in liquid media by the application of ultrasonic energy. It applies specifically to source engineered nanomaterials (ENM) o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905633

28. Dynamic light scattering investigations of nanoparticle aggregation following a light-induced pH jump
Topic: Nanotech/Environment, Health & Safety
Published: 5/19/2010
Authors: Ryan Murphy, Denis Pristinski, Kalman D Migler, Jack F Douglas, Vivek M Prabhu
Abstract: We use dynamic light scattering to characterize the kinetics of nanoparticle aggregation. The aggregation process was conveniently initiated in photoacid generator (PAG) solutions where changes in the pH of the solution can be controlled by exposure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904974

29. Methods for TEM analysis of NIST‰s SWCNT SRM
Topic: Nanotech/Environment, Health & Safety
Published: 3/25/2010
Authors: Roy Howard Geiss, Elisabeth Mansfield, Jeffrey A Fagan
Abstract: The National Institute of Standards and Technology (NIST) is developing a series of single-walled carbon nanotube, SWCNT, reference materials, RMs, to provide researchers with well characterized materials for their applications. The SWCNT reference m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905078

30. Size Measurement of Nanoparticles using Atomic Force Microscopy
Topic: Nanotech/Environment, Health & Safety
Published: 10/1/2009
Authors: Jaroslaw Grobelny, Frank W DelRio, Pradeep Narayanan Namboodiri, Doo-In Kim, Vincent A Hackley, Robert Francis Cook
Abstract: In this assay protocol, procedures for dispersing gold nanoparticles on various surfaces such that they are suitable for imaging and height measurement via intermittent contact mode AFM are first described. The procedures for AFM calibration and ope ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854085



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