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Topic Area: Nanomaterials

Displaying records 71 to 80 of 158 records.
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71. Instabilities as a Measurement Tool for Soft Materials
Topic: Nanomaterials
Published: 11/2/2010
Authors: John A. (John A) Howarter, Christopher M Stafford
Abstract: Mechanical instabilities such as wrinkles, creases, and folds have long been viewed as a source of frustration for engineers and often a point of curiosity among scientists. Scientists aspire to understand the underlying physics behind the formation ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905663

72. Investigation of Thermally Responsive Block Copolymer Thin Film Morphologies Using Surface Gradients
Topic: Nanomaterials
Published: 10/20/2010
Authors: Jennifer Y. Kelly, Julie N. L. Albert, John A. (John A) Howarter, Shuhui Kang, Christopher M Stafford, Thomas H Epps, Michael J Fasolka
Abstract: We report the use of a gradient library approach to characterize the structure and behavior of thin films of a thermally-responsive block copolymer (BCP), poly(styrene-b-tert-butyl acrylate), that exhibits chemical deprotection and morphological chan ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906129

73. Phonon dephasing and population decay dynamics of the G-band of semiconducting single-wall carbon nanotubes
Topic: Nanomaterials
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905809

74. Predicting Microstructure Development During Casting of Drug Eluting Coatings
Topic: Nanomaterials
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

75. A spray drying system for synthesis of rare-earth doped cerium oxide nanoparticles
Topic: Nanomaterials
Published: 8/10/2010
Author: Renu Sharma
Abstract: We have constructed a spray-dryer to synthesize doped ceria nanoparticles. This system was employed to synthesize mixed oxide nanoparticles of praseodymium doped (3%, 10% and 20mol %) ceria. X-ray Diffraction (XRD) confirmed the fluorite-like cubic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905328

76. Surface Energy/Chemistry Gradients for Block Copolymer Thin Film Studies
Topic: Nanomaterials
Published: 8/2/2010
Authors: Julie N. L. Albert, Michael J. Baney, Christopher M Stafford, Jennifer Y. Kelly, Thomas H Epps
Abstract: Development of self-assembling block copolymer materials for emerging nanotechnologies requires an understanding of how surface energy and chemistry affect thin film phase behavior. Gradient methods provide an effective route to explore the role of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905351

77. Quartz crystal microbalance for in-situ monitoring of laser cleaning of carbon nanotubes
Topic: Nanomaterials
Published: 8/1/2010
Authors: Katie Hurst, Abram Van Der Geest, Mark T. Lusk, Elisabeth Mansfield, John H Lehman
Abstract: Photochemical changes of single-walled carbon nanotubes (SWCNTs), graphite and amorphous carbon have been investigated with a quartz crystal microbalance (QCM). The method of in-situ measurements reduces our uncertainty that is attributable to enviro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903111

78. Propensity of Nanoparticles to Release from Residential Soft Furnishings
Topic: Nanomaterials
Published: 6/21/2010
Authors: Rick D Davis, Yeon S. Kim, Marc R. Nyden, Richard H. Harris Jr.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904598

79. PREPARATION OF NANOPARTICLE DISPERSIONS FROM POWDERED MATERIAL USING ULTRASONIC DISRUPTION
Topic: Nanomaterials
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

80. Mechanical properties of one-dimensional nanostructures
Topic: Nanomaterials
Published: 5/23/2010
Authors: Gheorghe Stan, Robert Francis Cook
Abstract: The elastic mechanical properties of one-dimensional nanostructures are considered, with an emphasis on the use of contact-resonance atomic force microscopy methods to determine elastic moduli. Various methods used to determine elastic moduli of one- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902063



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