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Journals

Structure and Mechanical Properties of Poly (D,L-lactic Acid)Poly(e-caprolatone)Blends

October 12, 2021

Author(s)

M E. Broz, David L. VanderHart, N Washburn

A series of blends of the miscible, biodegradable polymers poly(D,L-lactic acid) and poly(e-caprolactone) were prepared varying mass fraction across the range...

Growth of Magnetic Nanowires in an Applied Field

October 12, 2021

Author(s)

R D K. Misra, H Nathani, William F. Egelhoff Jr.

Nanostructured quasi one-dimensional magnetic materials (nanowires) have attracted significant scientific and technological interest because they exhibit unique...

SiO₂/Si₃N₄/A1₂O₃ Stacks on Silicon for Scaled-Down Memory Devices: Effects of Interfaces and Thermal Annealing

October 12, 2021

Author(s)

M Lisiansky, A Heiman, M Kovler, Y Roizin, Igor Levin, A Gladkikh, M Oksman, R Edrei, A A. Hofman, Y Shnieder, T Claasen

Effects of interfaces and thermal annealing on the electrical performance of the SiO2/Si3N4/A12O3 (ONA) stacks in non-volatile memory devices were investigated...

Advanced Optical Techniques for the Determination of Composition and Thickness of Strained SiGe Alloys for a Manufacturing Environment

October 12, 2021

Author(s)

C A. King, H Pois, S Zangooie, R M. Young, Joseph Woicik, J A. Gupta

We report the construction and testing of a model for the measurement of graded SiGe bipolar transistor structures after epitaxial growth. Using a commercially...

Engineering of Self-Assembled Domain Architectures With Ultra-High Piezoelectric Response in Epitaxial Ferroelectric Films

October 12, 2021

Author(s)

J.H. Yang, Julia Slutsker, Igor Levin, D H. Kim, Chang-Beom Eom, R Ramesh, Alexander L. Roytburd

Non-180 domain wall movement, which makes a large contribution to the piezoelectric response of ferroelectric bulk materials, were found to be much more...

Superior Large-Scale Relaxation and Defectivity in SiGe Layers Grown on Pre-Threaded Si Substrates

October 12, 2021

Author(s)

M Erdtmann, M T. Currie, Joseph Woicik, David R. Black

State-of-the-art applications involving relaxed SiGe virtual substrates have a low tolerance for defectivity, i.e., threading dislocation density (TDD) and...

Carbon Monoxide Oxidation Over a Pt/A1₂O₃ Catalyst: Temperature Programmed Studies Over an Extended Coverage Range

October 12, 2021

Author(s)

D J. Burnett, Daniel A. Fischer, J L. Gland

Temperature programmed reaction spectroscopy (TPRS) experiments were performed on a 4.8 wt % Pt/Al2O3 catalyst to characterize carbon monoxide oxidation. CO and...

Polarization and Structural Transitions of Irradiated Vinylidene Fluoride-Trifluoroethylene Copolymer

October 12, 2021

Author(s)

E Balizer, A S. DeReggi, Dan A. Neumann, Fred B. Bateman

The structure and polarization of the 50 wt.% vinylidene fluoride-50 wt.% trifluoroethylene copolymer, a composition in the range that was first reported to...

Functional Oligothiophenes for Use in Self-Assembled Monolayer Field-Effect Transistors

October 12, 2021

Author(s)

A R. Murphy, Clayton Mauldin, J M. Frechet, Paul C. Chang, Kanan Putambekar, Kin-Yip Phoa, V Subramanian, Dean DeLongchamp, Daniel A. Fischer, Eric K. Lin

Asymmetric, end-functionalized thiophene oligomers capable of self-assembly and covalent bonding to silicon surfaces have been synthesized. Monolayer films were...

Volumetric and Size Characterization of Void Morphologies in Thermally Sprayed Metallic Deposits Using Scattering Techniques

October 12, 2021

Author(s)

T Keller, W. Wagner, J Ilavsky, Andrew J. Allen, N Margadant, S Siegmann, J Pisacka, G Barbezat, R Enzl

The complex void microstructure of thermally sprayed deposits may be approximated by three major void syste(interlamellar pores, intralamellar cracks, and...

High Dielectric Permittivity in AFe_1/2B_1/2O₃ Nonferroelectric Perovskite Ceramics (A = Ba, Sr, Ca; B= Nb, Ta, Sb)

October 12, 2021

Author(s)

I P. Raevski, S A. Prosandeev, S A. Bogatin, M A. Malitskaya

Afe l/2B 1/20 3 (A- Ba, Sr, Ca; B-Nb, Ta, Sb) ceramics were synthesized and temperature dependencies of the dielectric permittivity were measured at different...

Glass-Infiltrated Alumina and Spinel Ceramic Composites: Residual Stresses and Mechanical Behavior

October 12, 2021

Author(s)

A Saigal, Lin-Sien H. Lum, S Jahanmir

All-ceramic crowns, including glass-infiltrated alumina and spinel composites, are coming into widespread use because of their superior aesthetics and chemical...

Cavitation Creep in the Next Generation Silicon Nitride

October 12, 2021

Author(s)

F Lofaj, Sheldon M. Wiederhorn, Gabrielle G. Long, P R. Jemian, M Ferber

X-ray scattering (A-USAXS). Failure strains were around 0.5 %. The creep resistance of this grade was found to be up to two orders of magnitude better than that...

Science for Stewardship: Multidisciplinary Research on the USS Arizona

October 12, 2021

Author(s)

Matthew A. Russell, L E. Murphy, D L. Johnson, Timothy J. Foecke, Pamela J. Morris, R Mitchell

The National park Service's Submerged Resources Center and USS Arizona Memorial are conducting and coordinating research directed at understanding the nature...

Hydroxyapatite Formation in a Calcium Phosphate Cement Under Different Storage Conditions

October 12, 2021

Author(s)

S Hirayama, Shozo Takagi, T Ikemi, Laurence Chow

A water-activated self-hardening calcium phosphate cement (CPC) has been the subject of considerable interest in biomaterials research, especially as a bone...

X-Ray Standing Wave Analysis of Overlayer Induced Substrate Relaxation: The Clean and Bi-Covered (110) GaP Surface

October 12, 2021

Author(s)

A Herrera-Gomez, Joseph Woicik, T Kendelewicz, K E. Miyano, W E. Spicer

The relaxation of the surface P atoms, for both the clean and Bi covered GaP (110) surface, was studied with X-Ray Standing Wave Spectroscopy (XSW) using...

Obstruction Model of the Fractional Stokes-Einstein Relation in Glass-Forming Liquids

October 12, 2021

Author(s)

D Leporini, Jack F. Douglas

Diffusion of tracer molecules in glass-forming liquids is modeled in terms of diffusion in an obstructed space. For simplicity the obstructions are taken to be...

Theta-Like Specimens for Measuring Mechanical Properties at the Small-Scale: Effects of Non-Ideal Loading

October 12, 2021

Author(s)

David Henann, Li Ma, Lin-Sien H. Lum

As material structures and devices build from them shrink to the nano-scale, it is ever more difficult to measure accurately mechanical properties and behavior...

Near-Field Intensity Correlations in Semicontinuous Metal-Dielectric Films

October 12, 2021

Author(s)

K Seal, A K. Sarychev, H Noh, D A. Genov, A Yamilov, Vladimir Shalaev, Z C. Ying, H Cao

Spatial intensity correlation functions are obtained from near-field scanning optical microscope measurements of semicontinuous metal-dielectric films. The...

Near-Field Second Harmonic Microscopy of Thin Ferroelectric Films

October 12, 2021

Author(s)

V Smolyaninova, H Y. Liang, C H. Lee, C C. Davis, L D. Rotter, Debra Kaiser

Near-field second harmonic microscopy is ideally suited for studies of local nonlinearity and poling of ferroelectric materials at the microscopic level. Its...

Large Negative Poisson's Ratio for SrTiO3 Thin Films Grown on Si(001

October 12, 2021

Author(s)

F S. Aguirre-Tostado, A Herrera-Gomez, Joseph Woicik, R Droopad, Z Yu, D G. Schlom, E Karapetrova, P Pianetta, C S. Hellberg

The driving force of the semiconductor industry to integrate thin transition-metal oxides with Si transistor technology has led to the development of SrTiO3...

Secondary Phase Evolution in Silicon Nitride During Creep and Heat Treatment

October 12, 2021

Author(s)

F Lofaj, H Gu, A Okada, Sheldon M. Wiederhorn, H Kawamoto

The microstructure of a ytterbia- and yttria-containing grade of silicon nitride, SN 88, was investigated after it had been annealed in nitrogen, in air and...

Ferroics: Magnetic-Compass Lattice and Optical Phonon Dispersions of Dipolar Crystals

October 12, 2021

Author(s)

Takeshi Nishimatsu, U Waghmare, Yoshiyuki Kawazoe, Benjamin P. Burton, Kazutaka Nagao, N. Saito

We report a simple safe and attractive pedagogic demonstration with magnetic compasses that facilitates an intuitive understanding of the concept that...

Conformational Behavior of Guest Polymer Chains in Uniaxially Stretched Polydiethylsiloxane Elastomers: ²H NMR and SANS

October 12, 2021

Author(s)

A Batra, R C. Hedden, P Schofield, A Barnes, C Cohen, T M. Duncan

2H nuclear magnetic resonance (NMR) and small angle neutron scattering (SANS) data are reported for deuterated guest chains of polydiethysiloxane (PDES) in end...

Variational Methods for Microstructural Evolution

October 12, 2021

Author(s)

W Carter, J E. Taylor, John W. Cahn

The application of variational methods and gradient flows to principles of microstructural evolution are reviewed. For the cases considered in this paper...

Local Structure and Dynamics Studied by Force Modulation Spectroscopy and Imaging

October 12, 2021

Author(s)

William J. Price, P K. Kuo, T R. Lee, Z C. Ying, Gang-Yu Liu

Using nanoengineered structures of self-assembled monolayers on gold, asystematic investigation was conducted to study the sensitivity of force modulation AFM...

Surface Morphology Dependent Magnetic Thin Film Growth: Fe on GaN(0001)

October 12, 2021

Author(s)

P Ryan, R A. Rosenberg, D J. Keavney, J W. Freeland, Joseph Woicik

Iron deposition on ordered and disordered GaN (0001) surfaces result in dramatically different magnetic over-layer characteristics. On the ordered surface...

Low Temperature Electronics and Low-Temperature Cofired Ceramics Based Electronic Devices

October 12, 2021

Author(s)

C L. Claeys, Winnie Wong-Ng, K M. Nair

The Pore Structure and Its Impacts on Property and Performance of a Spin-on Porous Low k Dielectric

October 12, 2021

Author(s)

Yiping Liu, Wen-Li Wu, B J. Foran, D Gidley, Hae-Jeong Lee, Barry J. Bauer, B D. Vogt

A methylsilsesquioxane based porous spin-on dielectric has been evaluated at International SEMETCH (ISMT) for advanced interconnect applications. The pore...

X-Ray Diffraciton and the Existence of Long Range Internal Stresses

October 12, 2021

Author(s)

M A. Delos-Reyes, M E. Kassner, Lyle E. Levine

Long range internal stresses (LRIS) are often used to explain various aspects of the mechanical behavior of materials. Recent experiments by the authors...

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