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Journals

Flux Lattices Reformulated

December 12, 2012

Author(s)

Ian B. Spielman, Gediminas Juzeliunas

We theoretically explore the optical flux lattices produced for ultra-cold atoms subject to laser fields where both the atom-light coupling and the effective...

Dual-polarization sensitive MKIDs for far infrared astrophysics

December 12, 2012

Author(s)

Johannes Hubmayr, James A. Beall, Daniel T. Becker, Hsiao-Mei Cho, Brad Dober, Mark Devlin, Anna E. Fox, Dale Li, Michael D. Niemack, David P. Pappas, Leila R. Vale, Kent D. Irwin, Gene C. Hilton

We present the design for arrays of dual-polarization sensitive, superconducting sensors for far infrared astrophysics. Each pixel is feedhorn-coupled and...

Structure and Activity of PA5508, a Novel Hexameric Glutamine Synthase Homolog

December 12, 2012

Author(s)

Jane E. Ladner, James F. Parsons

The structure of PA5508 from Pseudomonas aeruginosa, a glutamine synthase (GS) homolog, has been solved at 2.5 Å. Surprisingly, PA5508 forms single hexameric...

Indentation device for in situ Raman spectroscopic and optical studies

December 12, 2012

Author(s)

Yvonne B. Gerbig, Chris A. Michaels, Aaron M. Forster, John W. Hettenhouser, Walter E. Byrd, Dylan J. Morris, Robert F. Cook

Instrumented indentation is a widely used technique to study the mechanical behavior of materials at small length scales and thus has been exploited in...

Introduction to Ion Channels in Disease

December 12, 2012

Author(s)

John J. Kasianowicz

Silicon Micromachines for Fun and Profit

December 12, 2012

Author(s)

David Bishop, Flavio Pardo, Cris Bolle, Randy Giles, Vladimir Aksyuk

Over the last decade or so a group of us, while working at Bell Labs, have been able to develop a large number of silicon micromachines for a wide range of...

Nanoscale Specific Heat Capacity Measurements Using Optoelectronic Bilayer Microcantilevers

December 12, 2012

Author(s)

Brian G. Burke, William Alexander Osborn, Richard S. Gates, David A. LaVan

We describe a new technique for optically and electrically detecting and heating bilayer microcantilevers (Pt−SiNx) to high temperatures at fast heating rates...

Atom-Probe Tomographic Study of ¿/¿' Interfaces and Compositions in an Aged Co-Al-W Superalloy

December 12, 2012

Author(s)

Eric Lass, Kil-Won Moon, Maureen E. Williams, Carelyn E. Campbell, Ursula R. Kattner, David C. Dunand, Peter J. Bocchini, David N. Seidman

Atom-probe tomography (APT) is utilized to investigate, in a Co-9.7Al-10.8W at.% alloy aged at 900 °C for 1000 h, the phase composition and partitioning...

Application of Pressure-Controlled Advanced Distillation Curve Analysis: Virgin and Waste Oils

December 12, 2012

Author(s)

Bret Windom, Thomas J. Bruno

One of the most important properties measured for liquid fuels is the volatility, usually as expressed by the distillation curve. In previous work, we...

Self-aligned multi-channel silicon nanowire field-effect transistors

December 12, 2012

Author(s)

Hao Zhu, Qiliang Li, Hui Yuan, Helmut Baumgart, D. E. Ioannou, Curt A. Richter

Si nanowire field effect transistors (SiNW FETs) with multiple nanowire channels and different gate lengths have been fabricated by using a directed assembly...

Observation of bias-specific telegraph noise in large transition-edge sensors

December 11, 2012

Author(s)

Vincent Y. Kotsubo, Douglas A. Bennett, Mark Croce, Michael W. Rabin, Daniel R. Schmidt, Joel N. Ullom

We have observed anomalous random telegraph noise in discrete regions of voltage bias throughout the superconducting transition in larger transition-edge...

Modeling Line Edge Roughness in Templated, Lamellar Block Copolymer Systems

December 11, 2012

Author(s)

Paul N. Patrone, Gregg M. Gallatin

Block copolymers offer an appealing alternative to current lithographic techniques with re- gard to fabrication of next generation microprocessors. However, if...

Multi-zone Modeling of Size- Resolved Outdoor Ultrafine Particle Entry into a Test House

December 11, 2012

Author(s)

Dong H. Rim, Andrew K. Persily, Lance L. Wallace, William S. Dols, Steven J. Emmerich

Airborne particle transport into buildings is important for human exposure to particles and associated health effects. The present study investigated the entry...

Effect of Electrical Discharge Machining (EDM) on Miniaturized Charpy Test Results

December 11, 2012

Author(s)

Enrico Lucon

Electrical Discharge Machining (EDM) is a manufacturing process whereby a desired shape is obtained through electrical discharges between an electrode and a...

A Low-Power, High-Sensitivity Micromachined Optical Magnetometer

December 11, 2012

Author(s)

Rahul R. Mhaskar, Svenja A. Knappe, John E. Kitching

We demonstrate a fiber-optically coupled optical magnetometer based on a microfabricated 87Rb vapor cell in a micromachined silicon sensor head. The cell is...

Large-Area GaN n-p Core-Shell Arrays Fabricated Using Top-Down Etching and Selective Epitaxial Overgrowth

December 10, 2012

Author(s)

Abhishek Motayed, Sergiy Krylyuk, Dipak Paramanik, Matt N. King, Jong Yoon Ha, Albert Davydov, John E. Bonevich

We present large-area, vertically-aligned GaN core-shell structures on silicon substrates. The GaN cores were formed by inductively coupled plasma etching of...

Differentiation and characterization of isotopically modified silver nanoparticles in aqueous media using asymmetric-flow field flow fractionation coupled to optical detection and mass spectrometry

December 10, 2012

Author(s)

Julien C. Gigault, Vincent A. Hackley

The principal objective of this work was to develop and demonstrate a new methodology for silver nanoparticle (AgNP) detection and characterization based on...

Nonconventional Spin Glass Transition in a Chemically Ordered Pyrochlore

December 10, 2012

Author(s)

Deepak Singh, Y.S. Lee

The Future of National Manufacturing Policy

December 9, 2012

Author(s)

Gregory C. Tassey

Traditional economic growth mechanisms are critiqued to demonstrate long-term inadequacies for addressing the the technological and global competitive...

Infrared Spectra of Products of the Reaction of H Atoms with O2 Trapped in Solid Neon. HO2, HO2+, HOHOH-, and H2O(HO)

December 7, 2012

Author(s)

Marilyn E. Jacox, Warren E. Thompson

When a Ne:O2 mixture is codeposited at 4.3 K with a Ne:H2 mixture that has been passed through a microwave discharge, the infrared spectrum of the resulting...

Superconductivity in Nb-Sn thin films of stoichiometric and off-stoichiometric compositions

December 7, 2012

Author(s)

Matthijs Mentink, John E. Bonevich, Marc Dhalle, Daniel Dietderich, Arno Godeke, Frances Hellman, Herman Ten Kate

Binary Nb-Sn thin film samples are fabricated and characterized in terms of their composition, morphology and superconducting properties. Nb-Sn is magnetron...

Self-terminating Growth of Pt by Electrochemical Deposition

December 7, 2012

Author(s)

Yihua Y. Liu, Dincer Gokcen, Ugo Bertocci, Thomas P. Moffat

A self-terminating rapid electrodeposition process for controlled growth of Pt monolayer films from a K_(2)PtCl_(4)-NaCl electrolyte has been developed that is...

Low-frequency noise in gallium nitride nanowire mechanical resonators

December 7, 2012

Author(s)

Jason Gray, Kristine A. Bertness, Norman Sanford, Charles T. Rogers

We report on the low-frequency 1/f (flicker) parameter noise displayed by the resonance frequency and resistance of doubly clamped c-axis gallium nitride...

Evaluation of a drop-on-demand micro-dispensing system for development of artificial fingerprints

December 7, 2012

Author(s)

Jessica L. Staymates, Matthew Staymates, John Gillen

Precision micro-dispensing is a growing technique that has many applications in the scientific and additive manufacturing communities. Piezoelectric inkjet...

The Effects of Diffusion on an Exonuclease/Nanopore-Based DNA Sequencing Engine

December 7, 2012

Author(s)

Joseph E. Reiner, Joseph W. Robertson, Arvind Balijepalli, Daniel L. Burden, Bryon S. Drown, John J. Kasianowicz

The ability to electronically detect and characterize individual polynucleotides as they are driven through a single protein ion channel may eventually prove...

Single bead detection with a NMR micro capillary probe

December 6, 2012

Author(s)

Yoshihiro Nakashima, Michael A. Boss, Stephen E. Russek, John M. Moreland

We have developed a nuclear magnetic resonance (NMR) microcapillary probe for the detection of single magnetic microbeads. The geometry of the probe has been...

Spectra and Relaxation Dynamics of the Pseudohalide (PS) Vibrational Bands for Ru(bpy)2(PS)2 Complexes, PS = CN, NCS and N3

December 5, 2012

Author(s)

Edwin J. Heilweil, Ryan Compton, Helen K. Gerardi, Daniel Weidinger, Douglas J. Brown, Walter J. Dressick, Jeffrey C. Owrutsky

The RuII cyclometalated dye complex, cis-Ru(bpy)2(N3)2 (where bpy = 2,2-bipyridine), along with two more familiar analogs with pseudohalide (PS) ligands, cis...

Threshold Digraphs

December 5, 2012

Author(s)

Brian D. Cloteaux, Michael D. LaMar, Elizabeth R. Moseman, James Shook

A digraph whose degree sequences have a unique vertex labeled realization is called threshold. In this paper we present several characterizations of threshold...

Thermochemistry of alpha-D-xylose(cr)

December 4, 2012

Author(s)

Robert N. Goldberg, Manuel A. Ribeiro da Silva, Maria D. Ribeiro da Silva, Ana I. Lobo Ferreira, Quan Shi, Brian F. Woodfield

The thermochemistry of alpha-D-xylose(cr) was studied by means of oxygen bomb calorimetry and a Physical Property Measurement System (PPMS) in zero magnetic...

Microwave-Assisted Extraction and Quantitative LC/ID-MS Measurement of Total Choline and Free Carnitine in Food Standard Reference Materials

December 4, 2012

Author(s)

Melissa M. Phillips, Lane C. Sander

Choline and carnitine are quaternary amines that are synthesized in the body or consumed through the diet. Choline is critical for cell membrane structure and...

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