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Author: Richard Holbrook

Displaying records 1 to 10 of 13 records.
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1. Storage Wars: How citrate capped silver nanoparticle suspensions are affected by not-so-trivial decisions
Published: 3/21/2014
Authors: Justin M Gorham, Anne B Rohlfing, Katrice A Lippa, Robert I. MacCuspie, Amy Hemmati, Richard D Holbrook
Abstract: A critical but often overlooked component of silver nanoparticle (AgNPs) suspensions involves their behavior following short- and long-term storage. The current study investigates the integrity of citrate-capped AgNP suspensions, nominally 20 nm in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913638

2. Surface Chemical Transformations of UV irradiated Silica-Epoxy Nanocomposites
Published: 5/15/2013
Authors: Justin M Gorham, Tinh Nguyen, Deborah L Stanley, Coralie Bernard, Richard D Holbrook
Abstract: Silica nanoparticles (SiNPs) incorporated into a polymeric matrix, or silica nanocomposites (SiNCs), are used in a wide variety of commercially available products in numerous natural and artificial environments. Environmental factors, such as light, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913534

3. UV-induced photochemical transformations of citrate capped silver nanoparticle suspensions
Published: 9/14/2012
Authors: Justin M Gorham, Robert I. MacCuspie, Kate L Klein, D. Howard Fairbrother, Richard D Holbrook
Abstract: Due to the increasing use of silver nanoparticles (AgNPs) in consumer products, it is essential to understand how variables, such as light exposure, may change the physical and chemical characteristics of AgNP suspensions. To this end, the effect o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911250

4. Photo-induced Surface Transformation of Silica Nanocomposites
Published: 6/22/2012
Authors: Justin M Gorham, Tinh Nguyen, Coralie Bernard, Deborah L Stanley, Richard D Holbrook
Abstract: The physicochemical, UV-induced surface modifications to silica nanoparticle (SiNP) - epoxy composites have been investigated. The silica nanocomposites (SiNCs) were prepared using a two-part epoxy system with 10 % mass fraction of SiNPs and expose ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910637

5. Detection and Speciation of Brominated Flame Retardants in Consumer Products and Household Dust
Published: 3/27/2012
Authors: Richard D Holbrook, Jeffrey M Davis, Keana C k Scott, Christopher W Szakal
Abstract: The ubiquitous presence of brominated flame retardants in humans, biota, and the environment has caused concerns about their toxicity, transformations, and persistence. Polymeric materials, which often are intercalated with include brominated flame ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905365

6. Copper oxide nanoparticle mediated DNA damage in terrestrial plant models
Published: 12/22/2011
Authors: Bryant C Nelson, Donald H Atha, Elijah J Petersen, Huanhua Wang, Danielle Cleveland, Richard D Holbrook, Pawel Jaruga, M Miral Dizdar, Baoshan Xing
Abstract: Engineered nanoparticles, due to their unique electrical, mechanical and catalytic properties, are presently found in many commercial products and will be intentionally or inadvertently released at increasing concentrations into the natural environme ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908088

7. Potential release pathways, environmental fate, and ecological risks of carbon nanotubes
Published: 10/11/2011
Authors: Elijah J Petersen, Andrew Whelton, Liwen Zhang, Qingguo Huang, Nasir M. Uddin, Nikolai Mattison, Denis O'Carroll, Theodore Henry, Tinh Nguyen, Richard D Holbrook, Kai Chen
Abstract: Carbon nanotubes are currently being used in a number of consumer products, and exponentially higher production masses and a broader range of applications are expected in future years. However, the data on the environmental release pathways, environ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908157

8. Association of Quantum dot nanoparticles with Pseudomonas aeruginosa biofilm
Published: 11/1/2010
Authors: Jayne B Morrow, Catalina Arango, Richard D Holbrook
Abstract: Quantum dots (QDs) of two different surface chemistries (carboxyl (COOH) and poly ethylene glycol (PEG) modified) were utilized to determine the impact of surface functionality on QD mobility and distribution in Pseudomonas aeruginosa PAO1 biofilms. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903991

9. Widefield Light Microscopy Method for High Resolution and Quantum Dot Spectral Studies
Published: 1/1/2007
Authors: Cynthia J Zeissler, Keana C k Scott, Richard D Holbrook, Peter E. Dr. Barker, Yan Xiao
Abstract: We are exploring methods to achieve 3D 200 nm resolution multispectral imaging with an ordinary inexpensive widefield microscope using incoherent white light sources and an electronically tunable filter. In this work, the capabilities were applied to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902125

10. Quantum Dot Dissemination and Behavior in Bacterial Biofilms
Published: 5/7/2006
Authors: Jayne B Morrow, Richard D Holbrook, Cynthia J Zeissler
Abstract: Quantum dots (QDs) are colloidal semiconductor nanocrystals that photoluminescence emission is proportional to the dot size and have been utilized in fluorescent imaging in biological systems. Biofilms are communities of microorganisms attached to su ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902126



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