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Browsing MIT Open Access Articles by Title

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  • Hennessy, J.; Antoniadis, Dimitri A. (Institute of Electrical and Electronics Engineers, 2009-12)
    Germanium n-channel devices have historically shown poor performance due to an asy mmetric distribution of interface st ates that degrade electrostatic behavior and carrier mobility. In this study we demonstrate two methods ...
  • del Alamo, Jesus A. (CS ManTech, 2011-05)
    2010 marked the 30th anniversary of the High-Electron Mobility Transistor (HEMT). The HEMT represented a triumph for the, at the time, relatively new concept of bandgap engineering and nascent molecular beam epitaxy ...
  • Coppi, Bruno (Institute of Physics, 2009-12)
    The theoretical finding of composite disk structures around compact objects (e.g. black holes) and recent experimental observations indicate that highly coherent and dynamically important magnetic field configurations exist ...
  • Price, Gregory N.; Lee, James R.; Teng, Shang-Hua; Kelner, Jonathan Adam (Institute of Electrical and Electronics Engineers, 2010-03)
    We present a general method for proving upper bounds on the eigenvalues of the graph Laplacian. In particular, we show that for any positive integer k, the kth smallest eigenvalue of the Laplacian on a bounded-degree planar ...
  • Balewski, Jan T.; Betancourt, Michael Joseph; Corliss, Ross Cameron; Hays-Wehle, James Prewitt; Hoffman, A. M.; Jones, Christopher LaDon; Kocoloski, Adam Philip; Leight, William Axel; Milner, Richard G.; Redwine, Robert P.; Sakuma, Tai; Seele, Joseph Patrick; Surrow, Bernd; Nieuwenhuizen, Gerrit van; Walker, Matthew H. (American Physical Society, 2010-07)
    We report the first measurements of the kurtosis (κ [kappa]), skewness (S), and variance (σ [sigma] [superscript 2]) of net-proton multiplicity (N [subscript p]-N [subscript p̅] ) distributions at midrapidity for Au+Au ...
  • Wu, Jianlan; Cao, Jianshu (American Institute of Physics (AIP), 2013-07)
    We apply a new formalism to derive the higher-order quantum kinetic expansion (QKE) for studying dissipative dynamics in a general quantum network coupled with an arbitrary thermal bath. The dynamics of system population ...
  • Elvira, D.; Hachair, X.; Verma, V. B.; Braive, R.; Beaudoin, G.; Robert-Philip, I.; Sagnes, I.; Baek, B.; Nam, S. W.; Dauler, Eric A.; Abram, I.; Stevens, M. J.; Beveratos, A. (American Physical Society, 2011-12)
    We report on the higher-order photon correlations of a high-β nanolaser under pulsed excitation at room temperature. Using a multiplexed four-element superconducting single-photon detector we measured g(n)(0[superscript ...
  • Behrens, Mark Joseph; Hopkings, M. J. (Oxford University Press, 2011-01)
    Given a maximal finite subgroup G of the nth Morava stabilizer group at a prime p, we address the question: is the associated higher real K-theory EOn a summand of the K(n)-localization of a TAF -spectrum associated to a ...
  • Bezrukavnikov, Roman; Lin, Qian (American Mathematical Society, 2012)
    In the article by Bezrukavnikov and Mirkovic a certain non-commutative algebra A was defined starting from a semi-simple algebraic group, so that the derived category of A-modules is equivalent to the derived category of ...
  • Griffin, Robert Guy; Prisner, T. F. (Royal Society of Chemistry, The, 2010-05)
    Sensitivity is a critical issue in NMR spectroscopy, microscopy and imaging, and the factor that often limits the success of various applications. The origin of low sensitivity in NMR is well known to be due to the small ...
  • Barnes, Alexander; Corzilius, Bjorn; Griffin, Robert Guy; Smith, Albert Andrew; Bertini, Ivano; Luchinat, Claudio (American Chemical Society (ACS), 2011-03)
    We report the dynamic nuclear polarization of 1H spins in magic-angle-spinning spectra recorded at 5 T and 84 K via the solid effect using Mn2+ and Gd[superscript 3+] complexes as polarizing agents. We show that the magnitude ...
  • Asaba, Tomoya; Han, Tian-Heng; Lawson, B. J.; Yu, F.; Tinsman, C.; Xiang, Z.; Li, G.; Lee, Young S.; Li, Lu (American Physical Society, 2014-08)
    Herbertsmithite ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] is a kagome lattice antiferromagnet with spin-1/2 and has been demonstrated to be a likely candidate of spin liquid by a number of recent experiments. The ...
  • Fujita, T.; Yamaguchi, H.; Kimura, S.; Kashiwagi, T.; Hagiwara, M.; Matan, K.; Grohol, D.; Nocera, Daniel G.; Lee, Y. S. (American Physical Society, 2012-03)
    We have performed high-field multifrequency electron spin resonance (ESR) and high-field magnetization measurements in magnetic fields H of up to 53 T on single crystals of the kagome-lattice antiferromagnet KFe[subscript ...
  • Gregoriou, Georgia G.; Zhou, Huihui; Desimone, Robert; Gotts, Stephen J. (American Association for the Advancement of Science (AAAS), 2009-05)
    Electrical recordings in humans and monkeys show attentional enhancement of evoked responses and gamma synchrony in ventral stream cortical areas. Does this synchrony result from intrinsic activity in visual cortex or from ...
  • Rivas, Juan M.; Han, Yehui; Leitermann, Olivia; Sagneri, Anthony D.; Perreault, David J. (Institute of Electrical and Electronics Engineers (IEEE), 2008-07)
    This paper presents a new switched-mode resonant inverter, which we term the inverter, that is well suited to operation at very high frequencies and to rapid on/off control. Features of this inverter topology include low ...
  • Hu, Jingying; Sagneri, Anthony D.; Rivas, Juan M.; Han, Yehui; Davis, Seth M.; Perreault, David J. (Institute of Electrical and Electronics Engineers (IEEE), 2012-01)
    This paper presents a resonant single-ended-primary-inductor-converter (SEPIC) converter and control method suitable for high frequency (HF) and very high frequency (VHF) dc-dc power conversion. The proposed design provides ...
  • Dahl, Jason; Hover, Franz S.; Triantafyllou, Michael S. (International Society of Offshore and Polar Engineers (ISOPE), 2008-07)
    String-like ocean structures, such as deep water marine risers are susceptible to a condition of dual lock-in, where both the in-line and transverse natural frequencies are excited due to vortex shedding in the wake. This ...
  • Zimmerman, Paul A.; Rice, Bryan J.; Piscani, Emil C.; Liberman, Vladimir (Society of Photo-optical Instrumentation Engineers, 2009-03)
    For several years, SEMATECH has invested significant effort into extending 193 nm immersion lithography by developing a set of high index materials. For high index immersion lithography (HIL) to enable 1.70NA imaging, a ...
  • Khorana, H. Gobind; Zhang, Shuguang; Chelikani, Prashen; Takayama, Hidehito; Reeves, Philip J. (Public Library of Science, 2008-06)
    The study of membrane protein structure and function requires their high-level expression and purification in fully functional form. We previously used a tetracycline-inducible stable mammalian cell line, HEK293S-TetR, for ...
  • Xu, Zhinan; Cook, Brian L.; Ge, Baosheng; Yu, Daoyong; Ren, Hui; Zhang, Shuguang (Public Library of Science, 2009-02)
    Chemokine receptors belong to a class of integral membrane G-protein coupled receptors (GPCRs) and are responsible for transmitting signals from the extracellular environment. However, the structural changes in the receptor, ...
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