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Journals

Development and Interpretation of the Security Rating Index

October 12, 2021

Author(s)

Jonathan Sylvie, Stephen R. Thomas, Sang-Hoon Lee, Robert E. Chapman

This article is a follow-on publication to Addressing Security in the Early Stages of the Project Life Cycle. It details the development and interpretation of...

Synthesis and Characterization of Siloxy-Containing Imidazolium Ionic Liquids

October 12, 2021

Author(s)

Paul A. Wheeler, Jeffrey W. Gilman, L J. Mathias

A novel family of siloxy-containing imidazolium ionic liquids was synthesized and their thermal and decomposition properties studied. Three of the four...

A Reactive Molecular Dynamics Model of Thermal Decomposition in Polymers: II. Polyisobutylene

October 12, 2021

Author(s)

S I. Stoliarov, R Lyon, Marc R. Nyden

This is the second manuscript in a series of publications continuing the development and application of a method for investigation of the thermal decomposition...

The Use of 1,2-Dimethyl-3-(Benzyl Ethyl Iso-Butyl Poss)Imidszolium Chloride as an Organic Modifier in Polymer Layered Silicate Nanocomposites--A Dual Nanocomposites Approach

October 12, 2021

Author(s)

D M. Fox, P H. Maupin, S Bellayer, M Murariu, Jeffrey W. Gilman, Hugh C. De Long

Molecular Modeling of the Thermal Decomposition of Polymers

October 12, 2021

Author(s)

S I. Stoliarov, H Zhang, P R. Westmoreland, R Lyon, Marc R. Nyden

Applications presented in this work demonstrate the potential for using quantum mechanics and molecular simulations to determine the mechanisms and rates of the...

Effects of Aspect Ratio of Multi-Walled Carbon Nanotube on Flammability Properties of Polymer Nanocomposites

October 12, 2021

Author(s)

Bani Cipiriano, Takashi Kashiwagi, Srinivasa R. Raghavan, Ying Yang, E A. Grulke, Kazuya Yamammoto, John R. Shields, Jack F. Douglas

The effects of the aspect ratio of multi-walled carbon nanotube (MWNT) on viscoelastic properties and flammability properties of PS/MWNT nanocomposites are...

Traceability, Accreditation, Measurement Accuracy: How to Get It and How to Keep It!

October 12, 2021

Author(s)

C S. Brickenkamp, E L. Garner

Many of us in the scientific and technological arenas are measurement middlemen taking measurements provided by others, and making measurements for others. This...

Stability of Precision Diamond Turning Processes That Use Round Nosed Tools

October 12, 2021

Author(s)

David E. Gilsinn, Matthew A. Davies, B Balachandran

A system of retarded differential equations model is developed for a diamond-turning process with chip area cut by a round nosed tool. The results are presented...

Measurement of Nonlinear Phase Generated in Air-Silica Microstructure Fiber

October 12, 2021

Author(s)

T M. Fortier, Jun Ye, Steven T. Cundiff, R S. Windler

We present measurementsof the nonlinear phase noise generated in air-silica microstructure fiber, which is used in carrier envelope phase stabilization schemes...

Final Report of the SIM ⁶⁰ Co Air-Kerma Comparison (KCDB Entry SIM.RI (I)-K1)

October 12, 2021

Author(s)

C K. Ross, K Shortt, M Saravi, A Meghzifene, V M. Tovar, R A. Barbosa, C N. da Silva, F Gutt, Stephen M. Seltzer

Transfer chambers were used to compare the standards for 60Co air kerma maintained by seven laboratories. Six of the laboratories were members of the Sistema...

Control of the Frequency Comb From a Mode-Locked Erbium Doped Fiber Laser

October 12, 2021

Author(s)

J Rauschenberger, T M. Fortier, D J. Jones, Jun Ye, Steven T. Cundiff

We show that a stretched-pulse mode-locked fiber laser produces a well-defined frequency comb, providing a compact source of frequency combs and allowing comb...

The NIST FT 700 Vacuum Ultraviolet Fourier Transform Spectrometer: Applications in Ultraviolt Spectrometry and Radiometry

October 12, 2021

Author(s)

Ulf Griesmann, R Kling, John H. Burnett, L Bratasz

In the minds of many, Fourier transform spectrometry is restricted to applications in the infrared. In the ultraviolet, the increasingly severe demands on...

Colloquium: Femtosecond Optical Frequency Combs

October 12, 2021

Author(s)

S T. Cundiff, Jun Ye

Recently there has been a remarkable synergy between the technology of precision laser stabilization and modelocked ultrafast lasers. This has resulted in...

Development of a Small and Portable Absolute Gravimeter

October 12, 2021

Author(s)

A L. Vitouchkine, J E. Faller

lhgh precision (10 -9-10 -8)g absolute ballistic gravimeters (ABGs) are now being used worldwide. The ballistic method is based on the measurement of time and...

Recent Experiments with Bose-Condensed Gases at JILA

October 12, 2021

Author(s)

D S. Hall, J R. Ensher, D S. Jin, M R. Matthews, C E. Wieman, Eric A. Cornell

We consider a binary mixture of two overlapping Bose-Einstein condensates in two different hyperfine states of 87Rb with nearly indentical magnetic moments...

High Sensitivity CARS Microscopy With Two Tightly SynChronized Picosecond Lasers

October 12, 2021

Author(s)

J Potman, D J. Jones, J X. Cheng, X. Xie, Jun Ye

We demonstrate a significant improvement in signal-to-noise ratio recovered from coherent anti-Stokes Raman scattering (CARS) spectroscopy/microscopy, using two...

Fluctuation Effects on Surface Pattern Formation in Thin Block Copolymer Films

October 12, 2021

Author(s)

A C. Smith, Jack F. Douglas, Eric J. Amis, Alamgir Karim

Hole formation on the surface of thin block copolymer films is investigated as a function of time (t), temperature (T) and film thickness. The size of the holes...

Reactions of Chlorobenzene on the Pt (111) Surface: A Temperature Programmed Reaction and Fluorescence Yield Near Edge Spectroscopy Study

October 12, 2021

Author(s)

B M. Haines, G E. Mitchell, Daniel A. Fischer, J L. Gland

The surface reactions of chlorobenzene on Pt(111) have been studied using temperature programmed reaction spectroscopy (TPRS) and fluorescence yield near edge...

Tuning the Fragility of Polymer Melts With Antiplasticizer Additives

October 12, 2021

Author(s)

Robert A. Riggleman, K Yoshimoto, Jack F. Douglas, J J. de Pablo

Using molecular dynamics simulations, we have developed and analyzed a model that exhibits antiplasticization behavior by decreasing the glass transition...

Mechanical Strength of Various Types of Calcium Phosphate Cements

October 12, 2021

Author(s)

Y Matsuya, S Matsuya, Joseph M. Antonucci, S. Takagi, Laurence Chow, A Akashi, A Akamine

It has been reported that organic or polymeric calcium phosphate cements can be made from reactive calcium phosphates with various organic acids or poly...

An X-Ray Absorption Study of Stoichiometry and Bonding in the Maagnetocaloric Antiperovskite Mn₃GaC

October 12, 2021

Author(s)

L H. Lewis, D Yoder, A R. Moodenbaugh, Daniel A. Fischer, M-H Yu

The effects of carbon content were studied with magnetic and spectroscopic techniques in the imtermetallic perovskite compounds Mn3GaC, Mn3GaC0.90, and Mn3GaC0...

Effects of Argon Gas-Cluster Ion Beam Processing on Surface Roughness, Crystalline Orientation Texture, Magnetic, and Giant Magnetoresistance Properties of Α-Fe₂O₃ Bottom Spin-Valves

October 12, 2021

Author(s)

S Bae, J H. Judy, P J. Chen, L Gan, William F. Egelhoff Jr., J Hautala

The effects of gas-cluster ion beam (GCIB) processing on the surface roughness, crystalline orientation texture, magnetic, and giant magneto resistance (GMR)...

Advanced Neutron and X-Ray Techniques for Insights Into the Microstructure of EB-PVD Thermal Barrier Coatings

October 12, 2021

Author(s)

A Kulkarni, A N. Goland, H Herman, Andrew J. Allen, T A. Dobbins, F DeCarlo, J Ilavsky, S Fang, P Lawton

The ongoing quest to increase gas turbine efficiency and performance (increased thrust) provides a driving force for materials development. While improved...

Coating Kinetics of Fluoropolymer Process Aids for Sharkskin Elimination: The Role of Domain Size

October 12, 2021

Author(s)

D Bigio, Mathurin G. Meillon, S B. Kharchenko, David C. Morgan, Hui Zhou, S Oriani, C Macosko, Kalman D. Migler

We study the ability of fluoropolymer based polymer processing aids (PPA) to eliminate surface melt fracture (sharkskin) during extrusion of polyethylene in...

Variations in UHMWPE Particle Morphology Result in Different Cellular and Cytokine Responses in the Murine Air Pouch Model

October 12, 2021

Author(s)

P H. Wooley, Z Song, L Mayton, S Nasser, U Cho, M C. Shen, Stephen M. Hsu

The etiology of aseptic loosening (AL) following total joint replacement arthroplasty remains unclear, but the generation of small wear particles from the...

Layer Perfection in Ultrathin, MOVPE-Grown InAs Layers Buried in GaAs(001) Studied by X-Ray Standing Wave and Photoluminescence Spectroscopy

October 12, 2021

Author(s)

J A. Gupta, Joseph Woicik, S P. Watkins, D A. Harrison, E D. Crozier, B A. Karlin

Using the In-L fluorescence produced by normal-incidence X-ray standing waves, we have measured the layer perfection and positions for ML = 1 and 1/2 (where ML...

Artifacts That Could Be Misinterpreted as Ballistic Magnetoresistance

October 12, 2021

Author(s)

William F. Egelhoff Jr., L Gan, Erik B. Svedberg, Cedric J. Powell, Alexander J. Shapiro, Robert McMichael, J Mallett, Thomas P. Moffat, Mark D. Stiles

Theoretical physics suggests that very large magnetoresistance (MR) values might be found in certain magnetic nanocontacts if a magnetic domain wall could be...

Evaluation of Dental Restorative Composites Containing POSS-Methacrylate Monomers

October 12, 2021

Author(s)

H F. Fong, H Fong, Glenn M. Flaim, Sabine H. Dickens

We have combined confocal optical coherence (OCM) and confocal fluorescence (CFM) microscopies to gather simultaneous structural and functional information on...

A Systematic Study on Fabrication and Characterization of Electrospun Poly(alpha-hydroxy ester) Based Nanofibrous Scaffolds

October 12, 2021

Author(s)

W Li, James A. Cooper, Robert L. Mauck, Rocky Tuan

The most common type of synthetic biodegradable polymer for tissue engineering applications is the FDA approved, clinically used poly(a-hydroxy esters) that...

Ring-on-Ring Strength Measurements on Rectangular Glass Slides

October 12, 2021

Author(s)

Theo Fett, G Rizzi, J -. Guin, Sheldon M. Wiederhorn

The ring-on-ring test has been standardized and used extensively for strength measurements on glasses and ceramics. The specimen is especially useful to avoid...

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