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Displaying records 71 to 80 of 217 records.
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71. State Resolved THz Spectroscopy and Dynamics of Crystalline Peptide/Water Systems
Topic: Physics
Published: 7/11/2011
Authors: Zeeshan Ahmed, Shin G. Chou, Karen M. Siegrist, David F Plusquellic
Abstract: State resolved THz studies of crystalline peptides and their hydrates have provided precise measures of the infrared active phonon modes that reflect motions on the longest possible length scales in these systems. The impact of co-crystallized water ...

72. Generation of Ultrastable microwaves via optical frequency division
Topic: Physics
Published: 6/26/2011
Authors: Tara Michele Fortier, Matthew Steven Kirchner, Jennifer A. Taylor, James C Bergquist, Yanyi Jiang, Andrew D Ludlow, Christopher W Oates, Till P Rosenband, Scott A Diddams, Franklyn J Quinlan, Nathan D. Lemke
Abstract: A frequency-stabilized femtosecond laser optical frequency comb serves as a source of microwave signals having very low close-to-carrier phase noise. Comparison of two independent systems shows combined absolute phase noise of -100 dBc/Hz at an o ...

73. Imaging of nanoscale charge transport in bulk heterojunction solar cells
Topic: Physics
Published: 6/17/2011
Authors: Behrang H Hamadani, Nadine Emily Gergel-Hackett, Paul M Haney, Nikolai B Zhitenev
Abstract: We have studied the local charge transport properties of organic bulk heterojunction solar cells based on the blends of poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) with a photoconductive atomic force microscope (PCAF ...

74. A balanced homodyne detector and local oscillator shaping for measuring optical Schr{omlat}dinger cat states
Topic: Physics
Published: 5/12/2011
Authors: Thomas Gerrits, Scott C Glancy, Sae Woo Nam
Abstract: We present our implementation of an optical homodyne detector used to measure optical Schr{omlat}dinger cat states. We show how we minimized the losses and mode-mismatches associated with homodyne detection, which become important when measuring ...

75. Microresonator based optical frequency combs
Topic: Physics
Published: 4/29/2011
Authors: Scott A Diddams, T. J. Klippenberg
Abstract: Optical frequency combs based on mode-locked laser sources have provided unprecedented measurement capabilities for optical frequencies, enabling new applications in a wide range of topics that include atomic clocks, ultracold gases, molecular finge ...

76. Small-sized dichroic atomic vapor laser lock
Topic: Physics
Published: 4/21/2011
Authors: Svenja A Knappe, Changmin Lee, Geoffrey Z. Iwata, Eric Corsini, James M. Higbie, Micah P. Ledbetter, Dimitry Budkerl
Abstract: Two, lightweight diode laser frequency stabilization systems designed for experiments in the field are described. Similar to a previous design, magnetic-field lines are contained within a magnetic shield enclosing permanent magnets an ...

77. Microfabricated Chip Traps for Ions
Topic: Physics
Published: 4/12/2011
Authors: Jason Amini, Joseph Wright Britton, Dietrich G Leibfried, David J Wineland
Abstract: This publication is a review of microfabricated ion traps for a book. We cover the basics of Paul traps, various geometries for realizing the traps, a number of design considerations, and, finally, a review of existing microfabricated traps.

78. Measurement of equilibrium elemental vapor pressures using x-ray induced fluorescence
Topic: Physics
Published: 3/22/2011
Authors: John J Curry, Albert Henins, E. G Estupinan, W. P. Lapatovich, S. D. Shastri
Abstract: X-ray induced fluorescence is demonstrated as a fast and accurate method for measuring elemental vapor pressures over a wide range of pressures. As such, it may offer a preferable alternative to existing methods such as those based on effusion. ...

79. Coupled quantized mechanical oscillators
Topic: Physics
Published: 3/10/2011
Authors: Kenton R. Brown, Christian Ospelkaus, Yves Colombe, Andrew C Wilson, Dietrich G Leibfried, David J Wineland
Abstract: The harmonic oscillator is one of the simplest physical systems but also one of the most fundamental. It is ubiquitous in nature, often serving as an approximation for a more complicated system or as a building block for larger models. Realizations o ...

80. Effect of interactions on edge property measurements in magnetic multilayers
Topic: Physics
Published: 2/25/2011
Authors: Meng Zhu, Robert D McMichael
Abstract: This paper reports effects of inter-film interactions on static and dynamic magnetization behavior at film edges in magnetic trilayer stripe arrays under transverse applied fields. The trilayers consist of two magnetic films of Ni80Fe20, 10 nm and 2 ...

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