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You searched on: Author: Jeffrey Fagan

Displaying records 1 to 10 of 39 records.
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1. Quantification of carbon nanotubes in environmental matrices: Current capabilities, case studies, and future improvements
Published: 4/6/2016
Authors: Elijah J Petersen, D. Xanat Flores-Cervantes, Thomas Bucheli, Lindsay Christina Clark Elliott, Jeffrey A Fagan, Alexander Gogos, Shannon Hanna, Antonio Rafael Montoro Bustos, Desiree L. Plata, Vytautas Reipa, Paul Westerhoff, Michael R Winchester, Elisabeth Mansfield
Abstract: Carbon nanotubes (CNTs) have numerous exciting potential applications approaching commercialization. As such, quantitative measurements of CNTs in key environmental matrices (water, soil, sediment, and biological tissues) are needed to address conce ...

2. Elasticity and rigidity percolation in networks of type-purified single-wall carbon nanotubes on flexible substrates
Published: 10/29/2013
Authors: John M. Harris, JiYeon Huh, Matthew R Semler, Christopher M Stafford, Steven D Hudson, Jeffrey A Fagan, Erik K Hobbie
Abstract: Wrinkles and folds in compressed thin films of type-purified single-wall carbon nanotubes (SWCNTs) on polydimethylsiloxane (PDMS) substrates are used to study the mechanical response of pristine nanotube networks. While the low-strain plateau moduli ...

3. Fourth NIST Workshop on Carbon Nanotubes: Chirality Measurements
Series: Special Publication (NIST SP)
Report Number: 1133
Published: 1/30/2013
Author: Jeffrey A Fagan
Abstract: On September 23rd and 24th, 2010, the National Institute of Standards and Technology (NIST) hosted the fourth in a series of workshops addressing measurement needs for single wall carbon nanotubes (SWCNTs). Attendees representing an international ...

4. Concentration Measurement of Length-Fractionated Colloidal Single-Wall Carbon Nanotubes
Published: 9/20/2012
Authors: Constantine Y. Khripin, Xiaomin X. Tu, John Howarter, Jeffrey A Fagan, Ming Zheng
Abstract: Determination of the colloid concentration for a given single-wall carbon nanotube (SWCNT) dispersion is a basic requirement for many studies. The commonly used optical absorption based concentration measurement is complicated by the spectral cha ...

5. Electronic Durability of Flexible Transparent Films Assembled from Type-Sorted Single-Wall Carbon Nanotubes
Published: 12/11/2011
Authors: John M. Harris, Ganjigunte R.S. Iyer, Anna K Bernhardt, JiYeon Huh, Jeffrey A Fagan, Steven D Hudson, Erik K Hobbie
Abstract: The coupling between mechanical flexibility and electronic performance is evaluated for thin films of metallic and semiconducting single-wall carbon nanotubes (SWCNTs) deposited on compliant supports. Percolated networks of type-purified SWCNTs are a ...

6. Determination of Moisture Content of Single-Wall Carbon Nanotubes
Published: 10/17/2011
Authors: Rolf Louis Zeisler, Rabia Oflaz, Ralph E. Sturgeon, Rick L Paul, Brian E Lang, Jeffrey A Fagan, Joseph W Lam, Anthony Windust, P Grinberg, Benoit Simard, Christopher T. Kingston
Abstract: Several techniques were evaluated for the establishment of reliable water/moisture content of single-wall carbon nanotubes. Karl Fischer titration (KF) provides for a direct measure of the water content and was used for benchmarking against results ...

7. Measuring agglomerate size distribution and dependence of localized surface plasmon resonance absorbance on gold nanoparticle agglomerate size using analytical ultracentrifugation
Published: 9/3/2011
Authors: Justin M Zook, Vinayak Rastogi, Robert I. MacCuspie, Athena M Keene, Jeffrey A Fagan
Abstract: Nanoparticles frequently agglomerate when dispersed into relevant biological and environmental media, with the resulting change to the effective size distribution dramatically affecting the potential nanotoxicity and the absorbance for biosensor ...

8. Use of Neutron Activation Analysis for the Characterization of Single-Wall Carbon Nanotube Materials
Published: 6/9/2011
Authors: Rolf Louis Zeisler, Rabia Oflaz, Rick L Paul, Jeffrey A Fagan
Abstract: Instrumental neutron activation analysis (INAA) and prompt gamma neutron activation analysis (PGAA) were used to characterize a variety of single-wall carbon nanotube (SWCNT) materials from different principal production processes, as well as a mater ...

9. Flexure-induced structural and electronic changes in polymer supported membranes of length purified single-wall carbon nanotubes
Published: 2/22/2011
Authors: John M. Harris, Ganjigunte R.S. Iyer, Daneesh O. Simien, Jeffrey A Fagan, JiYeon Huh, Jun Y. Chung, Steven D Hudson, Jan Obrzut, Jack F Douglas, Christopher M Stafford, Erik K Hobbie
Abstract: Thin membranes of length purified single-wall carbon nanotubes (SWCNTs) are uniaxially compressed by depositing them on prestretched polymer substrates. Upon release of the strain, the topography, microstructure and conductivity of the films are c ...

10. Phonon dephasing and population decay dynamics of the G-band of semiconducting single-wall carbon nanotubes
Published: 10/19/2010
Authors: Young Jong Lee, Sapun Parekh, Jeffrey A Fagan, Marcus T Cicerone
Abstract: The dephasing and population decay dynamics of optical phonons are studied for semiconducting single-wall carbon nanotubes (SWCNTs) using broadband time-resolved coherent anti-Stokes Raman scattering (TR-CARS) and time-resolved incoherent anti-Stokes ...

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  • SP 250-XX: Calibration Services
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