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Topic Area: Nanomaterials

Displaying records 61 to 70 of 154 records.
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61. Electron Beam Induced Growth of TiO2 Nanostructures
Topic: Nanomaterials
Published: 2/1/2011
Author: Renu Sharma
Abstract: We report the evolution of TiO2 nanostructures when Au nanoparticles, supported on single crystal TiO2 substrates, were heated in ~2 Torr of flowing O2 in an environmental transmission electron microscope. Nanostructures with different morphologies w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905919

62. Far Infrared Absorption Measurements of Single Walled Carbon Nanotubes
Topic: Nanomaterials
Published: 1/17/2011
Authors: Shin G. Chou, Zeeshan Ahmed, Georgy Samsonidze, Jing Kong, Mildred Dresselhaus, David F Plusquellic
Abstract: Variable temperature high resolution far infrared absorption measurements were carried out for single walled carbon nanotubes samples with different diameter distributions. At a temperature where kBT is significantly lower than the phonon energy, th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906962

63. Comment on Viscoelastic properties of con ned polymer lms measured via thermal wrinkling by Edwin P. Chan, Kirt A. Page, Se Hyuk Im, Derek L. Patton, Rui Huang and Christopher M. Stafford, Soft Matter (Communications), 5, 4638 4641 (2009).
Topic: Nanomaterials
Published: 1/11/2011
Authors: Paul A. O'Connell, Greg B. McKenna, Edwin P Chan, Christopher M Stafford
Abstract: Recently Chan et al. published a paper describing a method to use the wrinkling of a thin elastic film on which is adhered a thin polymer film to extract the viscoelastic properties of the polymer. Results were presented for the rubbery plateau modu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905903

64. Measuring the Hydrodynamic Size of Nanoparticles in Aqueous Media Using Batch-Mode Dynamic Light Scattering
Topic: Nanomaterials
Published: 1/1/2011
Authors: Vincent A Hackley, Jeffrey D. Clogston
Abstract: Particle size characterization is of particular importance to nanomedicine as ,nanoŠ is a dimensional definition, and the size similarity of nanoparticles to biological moieties is believed to impart many of their unique medical properties. Here we p ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854055

65. Size Measurement of Nanoparticles using Atomic Force Microscopy
Topic: Nanomaterials
Published: 1/1/2011
Authors: Jaroslaw Grobelny, Frank W DelRio, Pradeep Narayanan Namboodiri, Doo-In Kim, Vincent A Hackley, Robert Francis Cook
Abstract: This chapter outlines procedures for sample preparation and the determination of nanoparticle size using atomic force microscopy (AFM). To start, procedures for dispersing gold nanoparticles on various surfaces such that they are suitable for imagin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854151

66. Combinatorial Screening of Osteoblast Response to 3D Calcium Phosphate/Poly(e-caprolactone) Scaffolds Using Gradients and Arrays
Topic: Nanomaterials
Published: 12/31/2010
Authors: Carl George Simon Jr, Kaushik Chatterjee, Laurence Chung Lung Chow, Limin Sun, Marian F Young
Abstract: There is a need to improve rapid methods for screening cell-biomaterial interactions. Current methods employ a flat 2D format even though 3D scaffolds are more representative of the tissue environment in vivo and cells are responsive to topological ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906746

67. 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

68. 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

69. 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

70. 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



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