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Browsing MIT Open Access Articles by Title

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  • Mekdeci, Brian Anthony; Ross, Adam Michael; Rhodes, Donna H.; Hastings, Daniel E. (International Council on Systems Engineering, 2011-06)
    Previous research has identified design principles that enable survivability for systems, but it is unclear if these principles are appropriate and sufficient for systems of systems as well. This paper presents a preliminary ...
  • Lee, Chia-Hua; Bose, Suman; Van Vliet, Krystyn J.; Karp, Jeffrey Michael; Karnik, Rohit (American Chemical Society (ACS), 2010-12)
    The lateral displacement of cells orthogonal to a flow stream by rolling on asymmetrical receptor patterns presents a new opportunity for the label-free separation and analysis of cells. Understanding the nature of cell ...
  • Hohm, Olaf; Samtleben, Henning (American Physical Society, 2014-03)
    We present the details of the recently constructed E[subscript 6(6)]-covariant extension of 11-dimensional supergravity. This theory requires a 5 + 27-dimensional spacetime in which the “internal” coordinates transform in ...
  • Hohm, Olaf; Samtleben, Henning (American Physical Society, 2014-03)
    We introduce the exceptional field theory for the group E[subscript 7(7)], based on a (4+56)-dimensional spacetime subject to a covariant section condition. The “internal” generalized diffeomorphisms of the coordinates in ...
  • Hohm, Olaf; Samtleben, Henning (American Physical Society, 2014-09)
    We develop exceptional field theory for E[subscript 8(8)], defined on a (3 + 248)-dimensional generalized spacetime with extended coordinates in the adjoint representation of E[subscript 8(8)]. The fields transform under ...
  • Holton, Richard (Blackwell Publishers, 2009-12)
    Legal rules admit of exceptions; indeed, it has been a legal maxim that one can infer the existence of a rule from exceptions that are made to it. Hart claims that the exceptions do not admit of exhaustive statement (a ...
  • Holton, Richard (Wiley-Blackwell Pubishers, 2010-12)
    Legal rules admit of exceptions; indeed, it has been a legal maxim that one can infer the existence of a rule from exceptions that are made to it. Hart claims that the exceptions do not admit of exhaustive statement (a ...
  • Yesilaltay, Ayce; Dokshin, Gregoriy A.; Busso, Dolores; Wang, Li; Galiani, Dalia; Vasile, Eliza; Quilaqueo, Linda; Orellana, Juan Andrés; Shalgi, Ruth; Dekel, Nava; Albertini, David F.; Rigotti, Attilio; Page, David C.; Krieger, Monty; Chavarria, Tony E.; Walzer, Dalia F. (National Academy of Sciences (U.S.), 2014-11)
    The HDL receptor scavenger receptor, class B type I (SR-BI) controls the structure and fate of plasma HDL. Female SR-BI KO mice are infertile, apparently because of their abnormal cholesterol-enriched HDL particles. We ...
  • Evans, Jeremy S.; Vydrov, Oleg A.; Van Voorhis, Troy (American Institute of Physics, 2009-07)
    We study real-time electron dynamics in a molecular junction with a variety of approximations to the electronic structure, toward the ultimate aim of determining what ingredients are crucial for the accurate prediction of ...
  • Reilly, D. J.; Taylor, J. M.; Petta, J. R.; Marcus, Charles M.; Hanson, Micah P.; Gossard, A. C. (American Physical Society, 2010-06)
    The influence of gate-controlled two-electron exchange on the relaxation of nuclear polarization in small ensembles (N∼10[superscript 6]) of nuclear spins is examined in a GaAs double quantum dot system. Waiting in the ...
  • Wei, Peng; Katmis, Ferhat; Assaf, Badih A.; Steinberg, Hadar; Jarillo-Herrero, Pablo; Heiman, D.; Moodera, Jagadeesh (American Physical Society, 2013-04)
    An exchange gap in the Dirac surface states of a topological insulator (TI) is necessary for observing the predicted unique features such as the topological magnetoelectric effect as well as to confine Majorana fermions. ...
  • Zhang, Xueyan; Nepf, Heidi (Springer Science + Business Media, 2011-06)
    This study describes the exchange flow between a region with open water and a region with a partial-depth porous obstruction, which represents the thermally-driven exchange that occurs between open water and floating ...
  • Guisinger, Alexandra; Singer, David Andrew (Cambridge University Press, 2010-04)
    If governments choose economic policies that often run counter to their public commitments, are those commitments meaningless? We argue that government proclamations can be critical in signaling economic policy intentions. ...
  • Kowalczyk, Timothy Daniel; Tsuchimochi, Takashi; Chen, Po-Ta; Top, Laken; Van Voorhis, Troy (American Institute of Physics, 2013-04)
    Restricted open-shell Kohn-Sham (ROKS) theory provides a powerful computational tool for calculating singlet excited state energies and dynamics. However, the possibility of multiple solutions to the ROKS equations — with ...
  • Difley, Seth; Van Voorhis, Troy (American Chemical Society, 2011-02)
    Charge transfer (CT) states and excitons are important in energy conversion processes that occur in organic light emitting devices (OLEDS) and organic solar cells. An ab initio density functional theory (DFT) method for ...
  • Abasto, D. F.; Mohseni, Masoud; Lloyd, Seth; Zanardi, P. (Royal Society, The, 2012-07)
    Symmetric couplings among aggregates of n chromophores increase the transfer rate of excitons by a factor n2, a quantum-mechanical phenomenon called ‘supertransfer’. In this work, we demonstrate how supertransfer effects ...
  • Bulovic, Vladimir; Tischler, Jonathan R.; Young, Elizabeth Renee; Bradley, Michael Scott; Nocera, Daniel G.; Akselrod, Gleb Markovitch (Institute of Electrical and Electronics Engineers, 2009-08)
    Sublinear intensity dependence of photoluminescence from organic exciton-polariton microcavities under non-resonant excitation in two power regimes is shown. The sublinearity is attributed to exciton-exciton annihilation, ...
  • Yang, Sen; Butov, L. V.; Simons, B. D.; Gossard, A. C.; Levitov, Leonid (American Physical Society, 2010-03)
    We report on the study of spatiotemporal self-organization of carriers in photoexcited GaAs quantum wells. Propagating interfaces between electron-rich and hole-rich regions are seen as expanding and collapsing exciton ...
  • Nugraha, Ahmad R. T.; Rosenthal, E. I.; Hasdeo, Eddwi H.; Sanders, G. D.; Stanton, C. J.; Saito, R.; Dresselhaus, Mildred (American Physical Society, 2013-08)
    We discuss how excitons can affect the generation of coherent radial breathing modes in the ultrafast spectroscopy of single-wall carbon nanotubes. Photoexcited excitons can be localized spatially and give rise to a spatially ...
  • Ye, Jun; Sun, Kewei; Zhao, Yang; Yu, Yunjin; Kong Lee, Chee; Cao, Jianshu (American Institute of Physics (AIP), 2012-06)
    Two distinct approaches, the Frenkel-Dirac time-dependent variation and the Haken-Strobl model, are adopted to study energy transfer dynamics in single-ring and double-ring light-harvesting (LH) systems in purple bacteria. ...
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