Publications Portal

You searched on:
Topic Area: Nanomaterials

Displaying records 61 to 70 of 127 records.
Resort by: Date / Title

61. In-situ Kinetics Studies on Hydrogenation of Transition Metal (=Ti, Fe) Doped Mg Films
Topic: Nanomaterials
Published: 3/1/2010
Authors: Zhuopeng Tan, Edwin J Heilweil, Leonid A Bendersky
Abstract: In this paper we report on kinetics studies on growth rates of a hydride phase during metal-hydride phase transformation of Mg films doped with transition metals (=Ti, Fe). Infrared imaging of wedge-shaped thin films during hydrogen loading reveals d ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904735

62. Measuring the Size of Nanoparticles Using Transmission Electron Microscopy (TEM)
Topic: Nanomaterials
Published: 3/1/2010
Authors: John E Bonevich, Wolfgang K. Haller
Abstract: This assay protocol outlines procedures for sample preparation and the determination of mean nanoparticle size (in projection) using transmission electron microscopy (TEM). The projected diameter is the diameter of an equivalent hard uniform sphere s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854083

63. Applications of Thermogravimetric Analysis in Quality Control of Single-Walled Carbon Nanotubes
Topic: Nanomaterials
Published: 2/1/2010
Authors: Elisabeth Mansfield, Aparna Kar, Stephanie A Hooker
Abstract: Carbon nanotube exhibit a range of chemistries, including mixtures of different nanotube diameters, lengths and chiralities, coupled with various concentrations of metallic and non-nanotube carbon impurities. The performance of a given material for ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903419

64. Laser Patterning of Diamond. Part II. Surface Nondiamond Carbon Formation and its Removal
Topic: Nanomaterials
Published: 12/30/2009
Authors: Daniel A Fischer, John Smedley, Trvini Rao, Cherno Jaye, Jen Bohon
Abstract: As diamond becomes more prevalent for electronic and research applications, methods of patterning diamond will be required. One such method, laser ablation, has been investigated in a related work.1 We report on the formation of surface non-diamond c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902382

65. Size Measurement of Nanoparticles using Atomic Force Microscopy
Topic: Nanomaterials
Published: 10/1/2009
Authors: Jaroslaw Grobelny, Frank W DelRio, Pradeep Narayanan Namboodiri, Doo-In Kim, Vincent A Hackley, Robert Francis Cook
Abstract: In this assay protocol, procedures for dispersing gold nanoparticles on various surfaces such that they are suitable for imaging and height measurement via intermittent contact mode AFM are first described. The procedures for AFM calibration and ope ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854085

66. Optical Properties of Rod-like Metallic Nanostructures: Insight from Theory and Experiment
Topic: Nanomaterials
Published: 9/3/2009
Authors: Jinsong Duan, Kyoungweon Park, Robert I MacCuspie, Richard A Vaia, Ruth Pachter
Abstract: In this work, we combined synthesis of metal Au and Au-Ag core-shell NRs, of high-purity and for a broad range of NR aspect ratios, with theoretical prediction, in order to gain an understanding of the optical response. Self-assembled NRs were also ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902067

67. Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene
Topic: Nanomaterials
Published: 8/6/2009
Authors: Hongki Min, Allan H. MacDonald
Abstract: We predict that the optical conductivity of normal graphene multilayers is close to {sigma}^duni^=({pi}/2) e^u2^/h per layer over a broad range of frequencies. The origin of this behavior is an emergent chiral symmetry which is present in normal N-l ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902107

68. Depressed Phase Transition in Solution-Grown VO2 Nanostructures
Topic: Nanomaterials
Published: 7/1/2009
Authors: Daniel A Fischer, Luisa Whittaker, Cherno Jaye, Zugen Fu, Sarbajit Banerjee
Abstract: The first-order metal insulator phase transition in VO2 is characterized by an ultrafast several orders of magnitude change in electrical conductivity and optical transmittance, which makes this material an attractive candidate for the fabrication of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902385

69. Asphaltene Adsorption onto Self-Assembled Monolayers of Mixed Aromatic and Aliphatic Trichlorosilanes
Topic: Nanomaterials
Published: 6/2/2009
Authors: Daniel A Fischer, Saloman Turgman-Cohen, Mathew Smith, P K Kilpatrick, Jan Genzer
Abstract: The adsorption of asphaltenes onto flat solid surfaces modified with mixed self-assembled monolayers (SAMs) of aliphatic and aromatic trichlorosilanes with varying wettabilities, aromaticities, and thicknesses is tested. The mixed SAMs are characte ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902377

70. Modification of PET surfaces with self-assembled monolayers of organosilane precursors
Topic: Nanomaterials
Published: 5/13/2009
Authors: Daniel A Fischer, Ali Ozcam, Kirill Effimenko, Cherno Jaye, Richard Spontak, Jan Genzer
Abstract: We report on a facile, robust and rapid method by which poly(ethylene terephthalate) (PET) surfaces can be chemically modified while avoiding chemical degradation. Specifically, we demonstrate that brief exposure of PET surfaces to ultraviolet/ozone ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901679