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Search Publications by: Stephanie S. Watson (Fed)

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Displaying 1 - 25 of 88

Pyrrhotite Reference Material Synthesis

April 4, 2025
Author(s)
Michael Mengason, Stephanie Watson
The mineral pyrrhotite was synthesized from iron and sulfur starting materials for one component in a four-component reference material (RM 8154-Pyrrhotite in Concrete) to be used to evaluate the presence of sulfur in aggregate (crushed rock) and concrete

A Spatially-Resolved Evaluation of Accelerated Environmental Aging on Emerging Polypropylene-based Photovoltaic Backsheets using Raman Spectroscopy

March 13, 2025
Author(s)
Ashlee Aiello, Stefan Mitterhofer, Jan Obrzut, Karissa Jensen, Patryk Wasik, Chiara Barretta, Gernot Oreski, Stephanie Watson, Li Piin Sung, Xiaohong Gu
Accelerated aging was used to assess environmental degradation in emerging co-extruded polypropylene (PP)-based backsheets under three different environmental conditions (65 °C/20 % relative humidity (RH), 75 °C/20 % RH, and 75 °C/50 % RH). Although

Temperature and light intensity effects on the photodegradation of high-density polyethylene

May 11, 2019
Author(s)
Andrew W. Fairbrother, Hsiang C. Hsueh, Jae Hyun Kim, Deborah S. Jacobs, Lakesha N. Perry, David G. Goodwin, Christopher C. White, Stephanie S. Watson, Li Piin Sung
The photodegradation of polymers poses a serious challenge to their outdoor application, and results in significant financial loss due to early or unexpected system failure. A better understanding of their degradation kinetics aids the improvement of

Road Mapping Workshop Report on Overcoming Barriers to Adoption of Composites in Sustainable Infrastructure

December 20, 2017
Author(s)
Richard J. Sheridan, Jeffrey W. Gilman, John Busel, David Hartman, Gale A. Holmes, Daniel Coughlin, Paul Kelley, Dustin Troutman, Jim Gutierrez, Charles Bakis, Robert Moser, Ellen Lackey, James R. Fekete, Stephanie S. Watson, Jae Hyun Kim, Aaron M. Forster, Ajay Krishnamurthy, Bharath NMN Natarajan, William O'Donnell
The February 2017 “Road Mapping Workshop on Overcoming Barriers to Adoption of Composites in Infrastructure” brought together designers, manufacturers, researchers, and end-users to identify barriers and potential solutions. Composite products produced in

Role of Materials Science in the Resilience of the Built Environment

December 5, 2017
Author(s)
Stephanie S. Watson, Chiara C. Ferraris, Jason D. Averill
The resilience of U.S. communities, defined as the "ability to withstand and recover rapidly from disruptive events," is directly dependent upon the ability of the built environment to maintain and support the functions upon which modern society has come

Biophysical Characterization of Functionalized Titania Nanoparticles and Their Application in Dental Adhesives

February 2, 2017
Author(s)
Jirun Sun, Elijah Petersen, Stephanie S. Watson, Christopher Sims, Alexander Kassman, Stanislav Frukhtbeyn, Drago Skrtic, Meryem T. Ok, Deborah Jacobs, Qiang Ye, Bryant C. Nelson
It is demonstrated that carboxylic acid-functionalized titanium dioxide (TiO2) NPs produce significantly higher levels of reactive oxygen species (ROS) after visible light irradiation (400-800 nm, 1600 mW/cm2) in comparison to nonfunctionalized TiO2 NPs

INVESTIGATION OF URBAN ROCK VARNISH ON THE SANDSTONE OF THE SMITHSONIAN CASTLE

September 6, 2016
Author(s)
Richard A Livingston, Carol A. Grissom, Edward Vicenzi, Zoe Weldon-Yochim, Nicole Little, Janet Douglas, Alexandre Fowler, Cara Santelli, Dorothea Macholdt, Diana Ortiz-Montalvo, Stephanie S. Watson
Bluish black, highly adherent patches have been observed growing on the Seneca sandstone of the Smithsonian Castle in Washington, DC. They are significantly enriched in Mn compared to the underlying sandstone, by a factor of 100, which suggests that

Tuning photo-catalytic activities of TiO2 nanoparticles using dimethacrylate resins

August 20, 2015
Author(s)
Jirun Sun, Stephanie S. Watson, David Allsopp, Deborah Jacobs, Drago Skrtic
Unique photo-catalytic activities (PCAs) of titanium dioxide nanoparticles (TiO2 NPs) made them attractive in many potential applications for medical devices. This study examined the benefits of the PCAs of TiO2 NPs through functionalization of the TiO2