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Topic Area: Nanomaterials
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Displaying records 101 to 110 of 127 records.
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101. 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

102. Real Time Shape Evolution of Nanoimprinted Polymer Structures During Thermal Annealing
Topic: Nanomaterials
Published: 7/18/2006
Authors: Ronald Leland Jones, T Hu, Christopher L Soles, Eric K Lin, R M Reano, Stella W Pang, D M Casa
Abstract: The real time shape of nanoimprinted polymer patterns are measured as a function of annealing temperature and time using a new metrology technique, Critical Dimension Small Angle X-ray Scattering (CD-SAXS). Periodicity, linewidth, line height, and s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852413

103. Real-Time Size Discrimination and Elemental Analysis of Gold Nanoparticles using ES-DMA coupled to ICP-MS
Topic: Nanomaterials
Published: 1/22/2013
Authors: Sherrie R. Elzey, De-Hao Tsai, Lee Lijian Yu, Michael R Winchester, Michael E Kelley, Vincent A Hackley
Abstract: We report the development of a hyphenated instrument with the capacity to quantitatively characterize aqueous suspended gold nanoparticles (AuNPs) based on a combination of gas-phase size separation, particle counting, and elemental analysis. A custo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912171

104. Relationship between dispersion metric and properties of PMMA/SWNT nanocomposites
Topic: Nanomaterials
Published: 6/13/2007
Authors: Takashi Kashiwagi, Jeffrey A Fagan, Jack F Douglas, Kazuya Yamamoto, Nathanael A Heckert, Stefan D Leigh, Jan Obrzut, Fangming Du, Minfang Mu, Sheng Lin-Gibson, K Winey, R Haggenmueller
Abstract: Particle spatial dispersion is a crucial characteristic of polymer composite materials and this property is recognized as especially important innanocomposite materials due to the general tendency of nanoparticles to aggregate under processing condit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854038

105. Relaxation Behavior of Polymer Structures Fabricated by Nanoimprint Lithography
Topic: Nanomaterials
Published: 8/14/2007
Authors: Yifu Ding, Hyun Wook Ro, Thomas Avery Germer, Jack F Douglas, Brian C. Okerberg, Alamgir Karim, Christopher L Soles
Abstract: We study the decay of the imprinted polystyrene (PS) patterns under thermal annealing using light diffraction. The first order diffraction intensity from the imprinted gratings was measured as a function of annealing time. Local intensity maximum i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852744

106. Rippling Instability of Supported Polymer Nanolines
Topic: Nanomaterials
Published: 2/21/2012
Authors: Vijaya R. Tirumala, Christopher M Stafford, Leonidas E. Ocola, Jack F Douglas, L. Mahadevan
Abstract: The swelling response of polymer line gratings supported on a rigid substrate has direct implications on their mechanical stability during pattern transfer in nanofabrication. The polymer lines, when swollen in a good solvent, undergo a rippling inst ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909469

107. Scanning Near-Field Infrared Microscopy and Spectroscopy With a Broadband Laser Source
Topic: Nanomaterials
Published: 10/1/2000
Authors: Chris A Michaels, Stephan J Stranick, Lee J Richter, Richard R Cavanagh
Abstract: A scanning near-field microscopy that allows the fast acquisition of mid-infrared absorption spectra is described. The microscope couples the nanoscale spatial resolution of a scanning probe microscope with the chemical specificity of vibrational spe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=831169

108. Self Assembly of Highly Ordered Nanowires in Biological Suspensions of Single-Wall Carbon Nanotubes
Topic: Nanomaterials
Published: 12/16/2008
Authors: Erik K. Hobbie, Jeffrey A Fagan, Matthew Becker, Steven D Hudson
Abstract: We demonstrate the directed self-assembly of highly-ordered nanowires of single-wall carbon nanotubes (SWNTs) in aqueous biological suspensions. Macroscopically straight and nearly-periodic linear arrangements of well-aligned individual SWNTs are fou ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854421

109. Self-Sealing Nanoporous Low-k Dielectric Patterns Created by Nanoimprint Lithography
Topic: Nanomaterials
Published: 4/15/2008
Authors: Hyun Wook Ro, H Peng, Ken-ich Nihara, Hae-Jeong Lee, Eric K Lin, Alamgir Karim, D Gidley, Hiropshi Jinai, Do Y. Yoon, Christopher L Soles
Abstract: In this letter we describe how highly porous nanostructures can be directly printed into a poly(methylsilsequioxane) (PMSQ)-based organosilicate film, with high pattern fidelity, and develop the measurement infrastructure to quantitatively evaluate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852758

110. Singularity in the Debye-Waller factor of graphene
Topic: Nanomaterials
Published: 3/16/2009
Authors: Vinod K Tewary, B. Yang
Abstract: It is shown that the Debye-Waller factor for graphene has a singularity. However, the singularity does not affect the zero-temperature value of the Debye-Waller factor. We calculate the zero-temperature limit of the mean-square displacement separate ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854477