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NIST Authors in Bold

Displaying 18051 - 18075 of 73994

A Fast Algorithm for Elastic Shape Distances Between Closed Planar Curves

June 8, 2015
Author(s)
Gunay Dogan, Javier Bernal, Robert C. Hagwood
Effective computational tools for shape analysis are needed in many areas of science and engineering. We address this and propose a fast algorithm to compute the geodesic distance between elastic closed curves in the plane. The original algorithm for the

A Generalized Data-Driven Energy Prediction Model with Uncertainty for a Milling Machine Tool using Gaussian Process

June 8, 2015
Author(s)
Jinkyoo Park, Raunak Bhinge, Nishant Biswas, Amrita Srinivasan, Kincho H. Law, David Dornfeld, Moneer Helu, Sudarsan Rachuri
Using a machine learning approach, this study investigates the effects of machining parameters on the energy consumption of a milling machine tool, which would allow selection of optimal operational strategies to machine a part with the minimum energy

Fundamental Requirements for Data Representations in Laser-based Powder Bed Fusion

June 8, 2015
Author(s)
Shaw C. Feng, Paul W. Witherell, Gaurav Ameta, Duck B. Kim
Additive Manufacturing (AM) processes intertwine aspects of many different engineering-related disciplines, such as powder material metrology, design, in-situ and off-line measurements, control. Due to the increasing complexity of AM systems and processes

Quasilocal Critical Nature of Cooperative Paramagnetic Fluctuations in CaRuO 3 Metal

June 8, 2015
Author(s)
J. Gunasekera, Leland Harriger, T. Heitmann, A. Dahal, H. Knoll, D. K. Singh
We report new observation of cooperative paramagnetic fluctuations of Ru 4+ spins that coexist with the non-Fermi liquid state in CaRuO 3 perovskite below T22 K. Detailed electrical, magnetic and neutron scattering measurements reveal that the Ru R+ ions

Ferromagnetic resonance measurement using stroboscopic magneto optical Kerr effect

June 7, 2015
Author(s)
Takahiro Moriyama, Seungha Yoon, Robert McMichael
We have developed a novel ferromagnetic resonance measurement technique using the magneto optical Kerr effect. The measurement technique uses microwave-frequency, intensity-modulated light to stroboscopically measure the Kerr angle due to the magnetization

Suppression of Spin Pumping between Ni80Fe20 and Cu by a Graphene Interlayer

June 7, 2015
Author(s)
William J. Gannett, Mark W. Keller, Hans Nembach, Thomas J. Silva, Ann Chiaramonti Debay
Abstract We compare ferromagnetic resonance measurements of Py (Ni80Fe20) films sputtered onto Cu(111) with and without a graphene (Gr) interlayer grown by chemical vapor deposition before Py deposition. We find the expected damping enhancement from spin

Topological RPdBi Half-Heusler Semimetals: a New Family of Non-Centrosymmetric Magnetic SuperconductorS

June 5, 2015
Author(s)
Yasuyuki Nakajima, Rongwei Hu, Kevin Kirshenbaum, Alex Hughes, Paul Syers, Xiangfeng Wang, Kenfeng Wang, Renxiong Wang, Shanta R. Saha, Daniel K. Pratt, Jeffrey W. Lynn, Johnpierre Paglione
We report superconductivity and magnetism in a new family of topological semimetals, the ternary half Heusler compounds RPdBi (R: rare earth). In this series, tuning of the rare earth f-electron component allows for simultaneous control of both lattice

JPEG 2000 CODEC Certification Guidance for 1000 ppi Fingerprint Friction Ridge Imagery

June 4, 2015
Author(s)
Shahram Orandi, John M. Libert, Michael Garris, John Grantham, Frederick R. Byers
The document describes the procedure by which applications of JPEG 2000 CODECs will be evaluated with respect to conformance to the NIST guidance for compression of 1000 ppi friction ridge images as detailed in NIST Special Publication 500-289 [NIST5]

Tunable Spin Qubit Coupling Mediated by a Multi-Electron Quantum Dot

June 4, 2015
Author(s)
Vanita Srinivasa, Haitan Xu, Jacob M. Taylor
We present an approach for entangling electron spin qubits localized on spatially separated impurity atoms or quantum dots via a multi-electron, two-level quantum dot. The effective exchange interaction mediated by the dot can be understood as the simplest

Experimental and Numerical Investigation on the Effect of Cooling/Heating Rate on the Freeze-Thaw Behavior of Mortar Containing Deicing Salt Solution

June 3, 2015
Author(s)
Yaghoob Farnam, Hadi S. Esmaeeli, Dale P. Bentz, Pablo Zavattieri, Jason Weiss
In North America, some concrete pavements and sidewalks have shown severe damage during freezing. Research has been performed to better understand the cause of damage. A test method (called longitudinal guarded comparative calorimeter (LGCC)) has been
Displaying 18051 - 18075 of 73994
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