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Journals

Preparation of Non-equilibrium Nuclear Spin States in Double Quantum Dots

July 15, 2013

Author(s)

Jacob M. Taylor, Michael Gullans, Jacob J. Krich, Bertrand I. Halperin, M D. Lukin

We theoretically study the dynamic polarization of lattice nuclear spins in GaAs double quantum dots containing two electrons. We introduce a semiclassical...

Mode reconstruction of a light field by multi-photon statistics

July 15, 2013

Author(s)

Elizabeth A. Goldschmidt, Fabrizio Piacentini, I. Ruo Berchera, Sergey V. Polyakov, Silke Peters, Stefan Kuck, Giorgio Brida, Ivo P. Degiovanni, Alan L. Migdall, Marco Genovese

Knowing the underlying number and structure of occupied modes of a light field plays a crucial role in minimizing loss and decoherence of quantum information...

Use of Half Metallic Heusler Alloys in CoFeB/MgO/Heusler Alloy Tunnel Junctions

July 15, 2013

Author(s)

Andrew P. Chen, Gen G. Feng, Robert D. Shull

Heusler Alloys Co(sub2)FeSi and Co(sub2)MnSi were deposited on both single crystal MgO (100) and polycrystalline SiO(Sub2) silicon thermal oxide substrates and...

Microfluidic Platform for Magnetic Nanoparticle Trapping and Detection

July 15, 2013

Author(s)

Charles A. Little, John Pellegrino, Stephen E. Russek

We evaluate giant magnetoresistance (GMR) sensors to trap and count small concentrations of magnetic nanoparticles (MNPs) within microfluidic flow. The device...

Multicomponent Chemical Imaging of Pharmaceutical Solid Dosage Forms with Broadband CARS Microscopy

July 15, 2013

Author(s)

Christopher M. Hartshorn, Marcus T. Cicerone, Young J. Lee, Charles H. Camp, John M. Heddleston, Patrick Marsac, Tim Rhodes, Zhen Liu, Nicole Canfield

We compare broadband coherent anti-Stokes Raman scattering (BCARS) microscopy with spontaneous Raman microscopy for quantitative and qualitative assessment of...

Absolute spectral responsivity measurements of solar cells by a hybrid optical technique

July 15, 2013

Author(s)

Behrang H. Hamadani, John F. Roller, Brian P. Dougherty, Fiona Persaud, Howard W. Yoon

An irradiance mode, absolute differential spectral response measurement system for solar cells is presented. The system is based on combining the monochromator...

3D X-ray Metrology for Block Copolymer Lithography Line-Space Patterns

July 15, 2013

Author(s)

Daniel F. Sunday, Matthew R. Hammond, Chengqing C. Wang, Wen-Li Wu, Regis J. Kline, Gila E. Stein

We report on the development of a new measurement method, resonant critical-dimension small-angle x-ray scattering (CD-SAXS), for the characterization of the...

Characterizing Large-Form-Factor Devices in a Reverberation Chamber

July 15, 2013

Author(s)

Catherine A. Remley, Gerrit S. van de Beek, Christopher L. Holloway, John M. Ladbury

AbstractWith new technologies such as machine-to-machine communications there is a growing need to test large-formfactor devices in reverberation chambers. The...

Thermoelectric imaging of structural disorder in epitaxial graphene

July 14, 2013

Author(s)

Sanghee Cho, Stephen D. Kang, Wondong Kim, Eui-Sup Lee, Sung-Jae Woo, Ki-Jeong Kong, Ilyou Kim, Hyeong-Do Kim, Tong Zhang, Joseph A. Stroscio, Yong-Hyun Kim, Ho-Ki Lyeo

Many structural defects and strain fields develop during the preparation of thin films and nanostructures, with their origins being at the atomic level1,2...

The Metrology of Counting Protein Particles

July 13, 2013

Author(s)

Dean C. Ripple, Michael J. Carrier, Richard E. Cavicchi, Christopher B. Montgomery, Zhishang Hu

A common degradation pathway for protein-based drugs is the growth of protein aggregates or particles. Counting and characterization of these particles is...

Anisotropic LMN dielectronic resonances from ratios of magnetic-dipole lines

July 13, 2013

Author(s)

Yuri Ralchenko, John D. Gillaspy

Signatures of multi-keV LMN dielectronic resonances in highly-charged 3dn ions of tungsten were detected in the intensity ratios of extreme-ultraviolet magnetic...

Superposition, Entanglement, and Raising Schroedinger's Cat

July 12, 2013

Author(s)

David J. Wineland

This is a written version of the lecture I presented in connection with the Nobel Prize ceremonies in December 2012. The paper briefly summarizes experiments on...

Ab initio study of the mechanical and the transport properties of pure and contaminated silver nanowires

July 12, 2013

Author(s)

Shmuel Barzilai, Francesca M. Tavazza, Lyle E. Levine

The conductance and mechanical properties of pure and contaminated silver nanowires were studied using density functional theory (DFT) calculations. Several...

Structure stability and electronic transport of gold nanowires on BeO (0001) surface

July 12, 2013

Author(s)

Shmuel Barzilai, Francesca M. Tavazza, Lyle E. Levine

Gold nanowire chains are considered a good candidate for nanoelectronics devices since they exhibit remarkable structural and electrical properties. For...

Molecular Layer-by-Layer Assembled Reverse Osmosis Membranes for Water Desalination

July 12, 2013

Author(s)

Joung-Eun Gu, Seunghye Lee, Wansuk Choi, Jong Suk Lee, Bo-Young Kim, Edwin Chan, Christopher Stafford, Jun-Young Chung, Joona Bang, Jung-Hyun Lee

Here, we report on the successful design, construction, and performance of membranes constructed using the mLbL process and show that these membranes exceed the...

Atomic Data for Iron-group Elements of Astrophysical Interest

July 11, 2013

Author(s)

Gillian Nave, Craig J. Sansonetti, J C. Pickering, Matthew Ruffoni, Anne P. Thorne, Florence Liggins

The joint project between NIST and Imperial College London to measure spectra of singly-ionized iron-group elements using Fourier transform and high-resolution...

Multi-resonant plasmonic nanodome arrays for label-free biosensing applications

July 10, 2013

Author(s)

Charles J. Choi, Stephen Semancik

The characteristics and utility of plasmonic nanodome arrays capable of supporting multiple resonance modes are described. A low-cost, large-area replica...

Nanoscale Imaging of Plasmonic Hot Spots and Dark Modes with the Photothermal Induced Resonance Technique

July 10, 2013

Author(s)

Basudev Lahiri, Glenn E. Holland, Vladimir A. Aksyuk, Andrea Centrone

The collective oscillation of conduction electrons, responsible for the LSPRs, enables engineering nanomaterials by tuning their optical response from the...

Multiple Detectors for a Short-Baseline Neutrino Oscillation Search Near Reactors

July 10, 2013

Author(s)

Hans Pieter Mumm, Karsten Heeger

Reactor antineutrino experiments have the ability to search for neutrino oscillations independent of reactor flux predictions using a relative measurement of...

On the bending strength of single-crystal silicon theta-like specimens

July 10, 2013

Author(s)

Rebecca R. Kirkpatrick, William Alexander Osborn, Michael S. Gaither, Richard S. Gates, Frank W. DelRio, Robert F. Cook

A new theta geometry was developed for micro-scale bending strength measurements. The new "gap" theta specimen was a simple modification of the arch theta...

Spinor Dynamics in an Antiferromagnetic spin-1 Thermal Bose Gas

July 9, 2013

Author(s)

Hyewon K. Pechkis, Jonathan Wrubel, Arne Schwettmann, Paul Griffin, Ryan Barnett, Eite Tiesinga, Paul D. Lett

We present experimental observations of coherent spin-population oscillations in a cold thermal, Bose gas of spin-1 23Na atoms. The population oscillations in a...

A method for the analysis of behavioural uncertainty in evacuation modelling

July 9, 2013

Author(s)

Enrico Ronchi, Paul A. Reneke, Richard D. Peacock

Evacuation models generally include the use of distributions or probabilistic variables to simulate the variability of possible human behaviours. A single model...

Hydrodynamic Corrections to Contact Resonance Force Microscopy Measurements of Viscoelastic Loss Tangent

July 9, 2013

Author(s)

Ryan C. Tung, Jason P. Killgore, Donna C. Hurley

We present a method to improve accuracy in measurements of nanoscale viscoelastic material properties with contact resonance (CR) AFM methods. Through the use...

Characterization of polydopamine thin films deposited at short times by the autoxidation of dopamine

July 9, 2013

Author(s)

Rebecca A. Zangmeister, Todd A. Morris, Michael J. Tarlov

Current interest in melanin films derived from the autoxidation of dopamine stems from their use as a universal adhesion layer. Here we report chemical and...

Broadband S-parameter characterization of a DC-SQUID amplifier

July 9, 2013

Author(s)

Leonardo M. Ranzani, Lafe F. Spietz, Jose A. Aumentado

In this work we characterize the 2-port scattering parameters of a superconducting quantum interference device (DC-SQUID) ampli er at 20 mK in the 2{8 GHz band...

Mechanical Control of a Microrod-Resonator Optical Frequency Comb

July 8, 2013

Author(s)

Scott B. Papp, Pascal P. Del'Haye, Scott A. Diddams

Robust control and stabilization of optical frequency combs enables an extraordinary range of scientific and technological applications, including frequency...

Sensitivity of Probes in Near-Field Spherical-Scanning Antenna Measurements

July 7, 2013

Author(s)

Ronald C. Wittmann, Michael H. Francis

We define and calculate sensitivity for several actual and simulated probes. Probe sensitivity can have a significant impact on measurement uncertainty...

Interfacial morphology and water transport of proton-conducting polymer membranes in fuel cell

July 5, 2013

Author(s)

Sangcheol Kim, Joseph A. Dura, Kirt A. Page, Christopher L. Soles

We quantify the interfacial structure and corresponding water transport kinetics in thin films of Nafion using neutron reflectivity (NR) and quartz-crystal...

A highly ordered non-crystalline metallic phase

July 5, 2013

Author(s)

Gabrielle G. Long, Karena Chapman, Peter Chupas, Leonid A. Bendersky, Lyle E. Levine, Frederic Mompiou, John W. Cahn, Judith K. Stalick

We report the characterization of an ordered non-crystalline isotropic metallic solid that, during rapid cooling of an Al-Fe-Si melt, forms by nucleation...

Measurements of effective diffusion coefficients of helium and hydrogen through gypsum

July 3, 2013

Author(s)

Jiann C. Yang, William M. Pitts, Marco G. Fernandez, Kuldeep R. Prasad

An experimental apparatus, which was based on the ¿-scale garage previously used for studying helium release and dispersion in our laboratory, was used to...

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