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Journals

Measurement and Interpretation of AC Susceptibility and Loss in High Temperature Superconductors

October 16, 2008

Author(s)

C C. Silva, M E. McHenry

Intrinsic and hysteretic AC losses were investigated in high temperature superconductors. AC susceptibility was measured as a function of magnetic field

Detection of Pinholes in Magnetic Tunnel Junctions by Magnetic Coupling

October 16, 2008

Author(s)

Philip Pong, Cindi L. Dennis, Audie M. Castillo, Andrew P. Chen, William F. Egelhoff Jr.

Pinholes in tunnel barriers are detrimental to the performance of magnetic tunnel junctions (MTJ) since they create direct magnetic exchange coupling between

The Influence of Ceramic Interphases on the Creep Behavior of Silicon Nitride

October 16, 2008

Author(s)

Sheldon M. Wiederhorn

In this paper we discuss the role played by the intergranular phases in the creep of silicon nitride, which is completely controlled by the amount and effective

Single-Crystal Plasticity: Statistical Physics and Experiments

October 16, 2008

Author(s)

Lyle E. Levine, R M. Thomson, M Savage, D E. Kramer, Y Shim

Although deformation usually appears to be a smooth process at the macroscopic scale, at smaller scales it is highly heterogeneous in both time and space, with

Ultrasonic Measurement of Stress Using a Rotating EMAT

October 16, 2008

Author(s)

A V. Clark, C S. Hehman, Thao D. Nguyen

The acoustic birefringence method is primarilly used to measure differences of principal stresses in regions where principal stresses coincide with material

Creep of Thin Film Au on Bimaterial Au/Si Microcantilevers

October 16, 2008

Author(s)

Dudley Finch

We examine creep in thin film Au to bimaterial Au/Si microcantilevers. Due to thermal expansion coefficient mismatch between the Au and Si layers, the

Melting Equilibria of the BaF₂-CuO_x System

October 16, 2008

Author(s)

Winnie Wong-Ng, Lawrence P. Cook, J Suh

Since the BaF 2-CuO x system is a limiting binary of the overall quaternary reciprocal Ba,Y,Cu//F,O phase diagram, it provides an important frame of reference

Friction and Adhesion Measurements Between a Florocarbon Surface and a Hydrocarbon Surface to Air

October 16, 2008

Author(s)

P M. McGuiggan

The friction and adhesion between a fluorocarbon monolayer-coated surface (FC) against a hydrocarbon monolayer-coated surface (HC) has been directly measured

Effects of Dentin Conditioning on Bond Strengths and Interfacial Morphology

October 16, 2008

Author(s)

Sabine H. Dickens

Bonding to dentin is critically influenced by the age and mineral content and the iatrogenic state of the dentin. The latter is affected by altering the smear

Crystal Asymmetry Induces Single-Atom Chain Formation in Gold Nanowires

October 16, 2008

Author(s)

Francesca Tavazza, A Hasmy, Lyle E. Levine, Anne M. Chaka, Luis C. Rincon, M Marquez, Carlos A. Gonzalez

We performed density functional theory and tight-binding molecular dynamics calculations to investigate the formation of suspended linear atom chains when

X-Ray Microbeam Measurements of Individual Dislocation Cell Elastic Strains in Deformed Single Crystal Copper

October 16, 2008

Author(s)

Lyle E. Levine, B C. Larson, W Yang, M E. Kassner, J Z. Tischier, M A. Delos-Reyes, Richard J. Fields

The distribution of elastic strains (and thus stresses) at the sub-micrometer length scale within deformed metal single crystals has surprisingly broad

Characterization of Nanoporous Low-K Thin Films by SANS Contrast Variation

October 16, 2008

Author(s)

R C. Hedden, Hae-Jeong Lee, Barry J. Bauer

Small-angle neutron scattering (SANS) contrast variation is applied to characterization of nanoporous low-dielectric constant (low-k) thin films. Films are

An In Vitro Model for Studying Bioresorption Rate of Calcium Phosphate Bone Graft Materials

October 16, 2008

Author(s)

Laurence C. Chow, Shozo Takagi, Milenko Markovic

It has been postulated that the in vivo resorption rates of calcium phosphate bone graft materials are closely related to their dissolution rates in

On the Existence and Stability of Quadrijunctions

October 16, 2008

Author(s)

John W. Cahn, E S. Vanleck

The existence and stability of various microstructural features for two-phase materials with anisotropic energies is discussed. In particular, the existence of

Deformation of Heterogeneous Adaptive Composite

October 16, 2008

Author(s)

Julia Slutsker, Alexander L. Roytburd

The superelastic deformation of an adaptive layer composite containing a shape memory alloy as an active component is considered in this paper. It is shown that

An Approach for Assessing Total Cellular DNA Damage

October 16, 2008

Author(s)

Marc Roy

The capability to relate phenotypic effects with damage associated with either of the two genomes is especially useful under a number of circumstances

AFM Observations of Slip Band Development in AI Single Crystals

October 16, 2008

Author(s)

D E. Kramer, M Savage, Lyle E. Levine

In situ atomic force microscopy (AFM) is used to observe the structure and evolution of slip bands on the surface of plastically deformed aluminum single

Internal Friction Tensor in Langasite (LA₃Ga₅SiO₁₄)

October 16, 2008

Author(s)

H M. Ledbetter, Sudook A. Kim

Using acoustic spectroscopy, we measured the complete elastic-constant and internal-friction tensor C y = C y (1+Q -1 y) of langasite, a trigonal-symmetry

The Flow Induced Structure in a Thermotropic Liquid Crystalline Polymer as Studied by SANS

October 16, 2008

Author(s)

M D. Dadmun, S Clingman, Christopher K. Ober, A Nakatani

Small angle neutron scattering is utilized to determine the flow induced alignment of a model thermotropic liquid crystalline polymer (LCP) as a function of

Colocalization of Cell Adhesion Proteins on 3D Tissue Engineering Scaffolds Fabricated by Rapid Prototyping

October 16, 2008

Author(s)

Tithi Dutta Roy, J J. Stone, Wei Sun, E H. Cho, S J. Lockett, Francis W. Wang, Lori Henderson

Not many groups have examined expression of cell adhesion molecules in 3D polymeric scaffolds compared to two-dimensional (2D) surfaces. In this investigation

Experimental Observations of Evolving Yield Loci in Biaxially Strained AA 5754-O

October 16, 2008

Author(s)

Mark Iadicola, Timothy J. Foecke, Stephen W. Banovic

Experimental measurement of the plastic biaxial mechanical response for an aluminum alloy (AA 5754-O) sheet metal is presented. Traditional methods of

Matrix Clusters, Polymer-Matrix Adducts, and Cation Attachment Mechanisms in the MALDI Analysis of Polystyrene

October 16, 2008

Author(s)

R J. Goldschmidt, William R. Blair, Kathleen M. Flynn, Anthony A. Giuseppetti

In the analysis of polystyrene by matrix-assisted laser desorption/ionization (MALDI), matrix clusters, polymer-matrix adducts, and polystyrene oligomers are

Surfaces Formed by Subcritical Crack Growth in Silicate Glasses

October 16, 2008

Author(s)

J -. Guin, Sheldon M. Wiederhorn

The topology of surfaces formed by subcritical crack growth was investigated by the method of mapping using atomic force microscopy. The objective of the study

Moving Beyond Crunch-the-Crown Testing Clinical Failure

October 16, 2008

Author(s)

J R. Kelly

Traditional fracture tests of single unit prostheses are inappropriate, since they do not create failure mechanisms seen clinically. Validated tests are needed

The Influence of Polymer-Polymer and Polymer-Surface Interactions on the Formation and Swelling of End-Grafted Polymer Layers

October 16, 2008

Author(s)

Jack F. Douglas

Investigations at NIST on the influence of polymer-polymer excluded volume and polymer-surface interactions on the formation and swelling of end-grafted polymer

Predicting the Location of Low-Angle Boundaries in Single-Crystal Castings

October 16, 2008

Author(s)

R E. Napolitano, Robert J. Schaefer

A set of nickel-based superalloy single-crystal investment castings was produced and evaluated for crystal perfection. Defect structures near the seed emergence

A Unified Approach to Motion of Grain Boundaries, Relative Tangetial Translation along Grain Boundaries, and Grain Rotation

October 16, 2008

Author(s)

John W. Cahn, J E. Taylor

Four phenomena associated with grain boundary mechanics and motion are unified into a single theoretical formulation: normal motion of a grain boundary

Thickness Dependence of Magnetic Film Edge Properties in Ni₈₀Fe₂₀ Stripes

October 16, 2008

Author(s)

Robert D. McMichael, C A. Ross, V P. Chuang

Measurements of trapped spinwave edge modes in transversely magnetized stripe arrays of Ni80Fe20 largely confirm pervious theoretical predictions for the

Fracture of Silicate Glasses: Ductile or Brittle?

October 16, 2008

Author(s)

J -. Guin, Sheldon M. Wiederhorn

Atomic force microscopy is used to investigate the possibility of crack tip cavitation during crack growth in silicate glasses. Matching areas on both surfaces

Erosion Mechanism of Polyanhydrides Containing Oligomeric Ethylene Glycol

October 16, 2008

Author(s)

Brandon M. Vogel, Maria D. Torres, Surya Mallapragada, Balaji Narasimhan

Polyanhydrides are biodegradable polymers that have proved to be excellent drug carriers. Applications of these polymers to protein-based drug delivery systems

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