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Journals

Sub-Doppler Laser Cooling and Magnetic Trapping of Erbium

Author(s)
Andrew J. Berglund, Simone Lee, Jabez J. McClelland
We investigate cooling mechanisms in magneto-optically and magnetically trapped erbium. We find efficient sub-Doppler cooling in our trap, which can persist

Developing an Interpretability Scale for Motion Imagery

Author(s)
J Irvine, A Aviles, D Cannon, Charles D. Fenimore, Donna Haverkamp, S Israel, G O'Brien, John W. Roberts
The motion imagery community would benefit from the availability of standard measures for assessing image interpretability. The National Imagery

Fluorescence during Doppler cooling of a single trapped atom

Author(s)
Janus Wesenberg, Dietrich G. Leibfried, Brad R. Blakestad, Joseph W. Britton, Ryan Epstein, Jonathan Home, Wayne M. Itano, John D. Jost, Emanuel H. Knill, C. Langer, R. Ozeri, Signe Seidelin, David J. Wineland
We investigate the temporal dynamics of Doppler cooling of a single trapped atom in the weak binding regime using a semi-classical model. We develop an

Characterizing Polymer Brushes via Surface Wrinkling

Author(s)
Heqing Huang, Jun Y. Chung, Adam J. Nolte, Christopher M. Stafford
We present the application of surface wrinkling to measure the properties of polymer brush layers tethered to the surface of a deformable silicone substrate. It

Learning Traversability Models for Autonomous Mobile Vehicles

Author(s)
Michael O. Shneier, Tommy Chang, Tsai Hong Hong, William P. Shackleford
Autonomous mobile robots need to adapt their behavior to the terrain over which they drive, and to predict the traversability of the terrain so that they can

DUC in Context

Author(s)
Paul D. Over, Hoa T. Dang, Donna K. Harman
Recent years have seen increased interest in text summarization with emphasis on evaluation of prototype ststems. Many factors can affect the design of such

Bulk Silicon Is Susceptible to Fatigue

Author(s)
Sanjit Bhowmick, Juan J. Melendez-Martinez, Brian R. Lawn
It has long been held that bulk silicon is immune from fatigue. We present contrary evidence demonstrating severe fatigue in macroscale cracks produced in

Porous Silicon Biosensor for MS2 Virus

Author(s)
Andrea Rossi, Lili Wang, Vytas Reipa, Thomas E. Murphy
Nanoporous silicon was discovered in the 1950 s and has unique properties due to quantum confinement effects. It is produced by electrochemical etching in HF

High-Q GaN nanowire resonators and oscillators

Author(s)
Shawn M. Tanner, Jason M. Gray, Charles T. Rogers, Kristine A. Bertness, Norman Sanford
We report high mechanical quality factors Q for GaN nanowire cantilevers grown by molecular beam epitaxy. Nanowires with 30-500 nm diameters and 5-20 υm lengths

Nothing is Brittle at the Nanoscale

Author(s)
Pradeep N. Namboodiri, Doo-In Kim, Jaroslaw Grobelny, T Hawa, B Henz, Michael R. Zachariah
Fracture of nanoscale contacts formed between spherical probes and flat samples is studied using an atomic force microscope (AFM) in ultra high vacuum

Thermodynamic Radiation Thermometry for the Next SI

Author(s)
Howard W. Yoon, Charles E. Gibson, V B. Khromchenko, George P. Eppeldauer, Robert R. Bousquet, Steven W. Brown, Keith R. Lykke
We describe the construction, the calibration and the use of the NIST Thermodynamic Radiation Thermometer (TRT) to measure the temperature of the gold-freezing
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