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Search Publications by: Dr. Vincent A. Hackley (Assoc)

Displaying 226 - 250 of 305

Making Batch-Mode Size Measurements of Nanoparticles in Aqueous Media Using Dynamic Light Scattering

August 11, 2007

Author(s)

Vincent A. Hackley, Jeffrey D. Clogston

Characterization and Surface-Reactivity of Nanocrystalline Anatase in Aqueous Solutions

December 19, 2006

Author(s)

Moira K. Ridley, Vincent A. Hackley, Michael L. Machesky

The chemical and electrostatic interactions at mineral- water interfaces are of fundamental importance in many geochemical, materials science, and technological processes; however, the effects of particle size at the nanoscale on these interactions are

Effect of poly(acrylic acid) on the adhesion strength and electrochemical performance of a natural graphite negative electrode for lithium-ion batteries

October 20, 2006

Author(s)

J -. Lee, U Paik, Vincent A. Hackley, Y -. Choi

Measurement of 100 nm and 60 nm Particle Standards by Differential Mobility Analysis

August 1, 2006

Author(s)

George W. Mulholland, Michelle K. Donnelly, Robert C. Hagwood, S R. Kukuck, Vincent A. Hackley, D Y. Pui

The peak particle size and expanded uncertainties (95 % confidence interval) for two new particle calibration standards are measured as 101.60 nm ? 1.02 nm and 60.68 nm ? 0.59 nm. The particle samples are polystyrene spheres suspended in filtered

Growth of Nanocrystalline Ceria Studied Using a USAXS Capillary Flow-Cell

July 1, 2006

Author(s)

Vincent A. Hackley, Andrew J. Allen, P R. Jemian, J M. Raitano, S W. Chan

Nanocrystalline ceria particles, with dimensions as small as 2 nm, have been prepared at room temperature by a soft chemical route using aqueous cerium nitrate and hexamethylenetetramine (HMT) as reactants. HMT decomposes slowly in aqueous solution

Particle Size Distribution by LASER Diffraction Spectrometry: Application to Cementitious Powders

April 19, 2006

Author(s)

Chiara F. Ferraris, Jeffrey W. Bullard, Vincent A. Hackley

Particle size distribution (PSD) measurements are now routinely employed to characterize cement powders. A variety of techniques is available for this purpose. However, at present, an industry standard does not exist for PSD analysis, nor do uniform

Effect of carboxymethyl cellulose on aqueous processing of natural graphite anodes and their electrochemical performance for lithium batteries

September 1, 2005

Author(s)

James J. Lee, U Paik, Vincent A. Hackley, V Choi

Structure Development in Aerogel-Processed Nanocrystalline Alkaline-Earth Oxides as Revealed by SANS

August 1, 2005

Author(s)

Vincent A. Hackley, P K. Stoimenov, D L. Ho, Li Piin Sung, K J. Klabunde

Effect of Carboxymethyl Cellulose on Aqueous Processing of Natural Graphite Anodes and Their Electrochemical Performance for Lithium Batteries

July 5, 2005

Author(s)

J. H. Lee, U Paik, Vincent A. Hackley, Mark Young

Suspensions of natural graphite particles were prepared in an aqueous medium using carboxymethyl cellulose (CMC) and emulsified styrene-butadiene (SB) copolymer latex, as part of an environmentally-friendly fabrication process for graphite anodes intended

Rheological and Electrokinetic Behavior Associated with Concentrated Nanosize Silica Hydrosols

May 1, 2005

Author(s)

J Y. Kim, U Paik, Vincent A. Hackley

We report that concentrated fumed silica nanosols exhibit anomalous rheology with regards to predictions based on DLVO theory. Despite a high electrokinetic potential at pH 8, fumed silica not only exhibits rheologicl behavior normally indicative of an

Measurement of Particle Size Distribution in Portland Cement Powder: Analysis of ASTM Round-Robin Studies

November 1, 2004

Author(s)

Chiara F. Ferraris, Vincent A. Hackley, A Aviles

A distribution of particle sizes or particle size distribution (PSD) is a fundamental characteristic of cement powder. Accurate PSDs are required in computational efforts to model the hydration process and it is an important practical issue for the cement

Partical Size Analysis by Laser Diffraction Spectrometry: Application to Cementitious Powders

March 1, 2004

Author(s)

Vincent A. Hackley, Lin-Sien H. Lum, V Gintautas, Chiara F. Ferraris

Techniques for Measurements in Concentrated Systems

February 1, 2004

Author(s)

Vincent A. Hackley

Concentrated suspensions present a number of technical challenges for characterization and monitoring of the solid phase. Recent developments have provided the means to analyze many concentrated systems directly or at solids loadings more closely