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Browsing MIT Open Access Articles by Title

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  • Chan, Chun Wang Ivan; Hu, Qing; Kumar, Sushil; Reno, John L. (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    The maximum operating temperature of previously reported terahertz quantum-cascade lasers (QCLs) has empirically been limited to a value of ~ ħω/k[subscript B]. Here, we report a new design scheme for terahertz QCLs and ...
  • Bertuccelli, Luca F.; Cummings, M. L. (Institute of Electrical and Electronics Engineers (IEEE), 2012-08)
    Unmanned aerial vehicles (UAVs) provide unprecedented access to imagery of possible ground targets of interest in real time. The availability of this imagery is expected to increase with envisaged future missions of one ...
  • Acemoglu, Daron; Ozdaglar, Asuman E. (Springer-Verlag, 2010-08)
    We provide an overview of recent research on belief and opinion dynamics in social networks. We discuss both Bayesian and non-Bayesian models of social learning and focus on the implications of the form of learning (e.g., ...
  • Tsitsiklis, John N.; Hendrickx, Julian M.; Blondel, Vincent D. (Institute of Electrical and Electronics Engineers (IEEE), 2011-02)
    We study a simple continuous-time multi-agent system related to Krause's model of opinion dynamics: each agent holds a real value, and this value is continuously attracted by every other value differing from it by less ...
  • Acemoglu, Daron; Como, Giacomo; Fagnani, Fabio; Ozdaglar, Asuman E. (Institute of Electrical and Electronics Engineers, 2011-12)
    We study a tractable opinion dynamics model that generates long-run disagreements and persistent opinion fluctuations. Our model involves an inhomogeneous stochastic gossip process of continuous opinion dynamics in a society ...
  • Modiano, Eytan H.; Ansari Sadrabadi, Mehdi; Bayesteh, Alireza (Institute of Electrical and Electronics Engineers, 2009-07)
    In this paper, we consider a distributed one-hop wireless network with n pairs of transmitters and receivers. It is assumed that each transmitter/receiver node is only connected to k receiver/transmitter nodes which are ...
  • Ceder, Gerbrand (Cambridge University Press (Materials Research Society), 2010-09)
    The idea of first-principles methods is to determine the properties of materials by solving the basic equations of quantum mechanics and statistical mechanics. With such an approach, one can, in principle, predict the ...
  • Perreault, David J.; Hu, Jingying; Han, Yehui; Pilawa-Podgurski, Robert C. N.; Sagneri, Anthony D.; Sullivan, Charles R.; Rivas, Juan M.; Leitermann, Olivia (Institute of Electrical and Electronics Engineers, 2009-03)
    This paper explores opportunities and challenges in power conversion in the VHF frequency range of 30-300 MHz. The scaling of magnetic component size with frequency is investigated, and it is shown that substantial ...
  • Leonard, Effendi; Runguphan, Weerawat; O'Connor, Sarah; Prather, Kristala L. Jones (Nature Publishing Group, 2009-04)
    Numerous drugs and drug precursors in the current pharmacopoeia originate from plant sources. The limited yield of some bioactive compounds in plant tissues, however, presents a significant challenge for large-scale drug ...
  • Kacperczyk, Aleksandra Joanna (Sage Publications, 2012-09)
    This study revisits the well-established notion that large and mature organizations stifle an employee’s ability and motivation to become an entrepreneur. Using unique data on U.S. mutual funds founded between 1979 and ...
  • Liberman, Leslie D.; Wang, Haobing; Liberman, M. Charles (American Chemical Society, 2011-01)
    The auditory system transduces sound-evoked vibrations over a range of input sound pressure levels spanning six orders of magnitude. An important component of the system mediating this impressive dynamic range is established ...
  • Burgasser, Adam J.; Witte, Soeren; Helling, Chirstiane; Sanderson, Robyn Ellyn; Bochanski, John J.; Hauschildt, Peter H. (Institute of Physics, 2009-04)
    Red optical and near-infrared spectroscopy are presented for SDSS J125637.13-022452.4, one of only four L subdwarfs reported to date. These data confirm the low-temperature, metal-poor nature of this source, as indicated ...
  • Bean, Jacob L.; Desert, Jean-Michel; Kabath, Petr; Stalder, Brian; Seager, Sara; Kempton, Eliza Miller-Ricci; Berta, Zachory K.; Homeier, Derek; Walsh, Shane; Seifahrt, Andreas (IOP Publishing, 2011-11)
    We present an investigation of the transmission spectrum of the 6.5 M [subscript ⊕] planet GJ 1214b based on new ground-based observations of transits of the planet in the optical and near-infrared, and on previously ...
  • Movassagh, Ramis; Johnson, Steven G. (American Physical Society, 2013-08)
    By Bernoulli's law, an increase in the relative speed of a fluid around a body is accompanied by a decrease in the pressure. Therefore, a rotating body in a fluid stream experiences a force perpendicular to the motion of ...
  • Hui, Pui-Chuen; Woolf, David; Iwase, Eiji; Sohn, Young-Ik; Ramos, Daniel; Khan, Mughees; Rodriguez, Alejandro W.; Johnson, Steven G.; Capasso, Federico; Loncar, Marko (American Institute of Physics (AIP), 2013)
    We demonstrate actuation of a silicon photonic crystal membrane with a repulsive optical gradient force. The extent of the static actuation is extracted by examining the optical bistability as a combination of the ...
  • Bache, M.; Bang, O.; Zhou, B. B.; Moses, Joel; Wise, F. W. (American Physical Society, 2010-12)
    We show through theory and numerics that when few-cycle femtosecond solitons are generated through cascaded (phase-mismatched) second-harmonic generation, these broadband solitons can emit optical Cherenkov radiation in ...
  • Zerom, Petros; Piredda, Giovanni; Boyd, Robert W.; Shapiro, Jeffrey H. (Institute of Electrical and Electronics Engineers (IEEE), 2009-08)
    We show theoretically that the longitudinal resolution of conventional optical coherence tomography can be improved by a factor of radic2 when a two-photon (as opposed to a single-photon) sensitive detector is used, and ...
  • Puryear, Andrew L.; Chan, Vincent W. S. (The International Society for Optical Engineering, 2009-08)
    Net-centric warfare in todays dynamically changing military environments and the need for low-cost gigabit intra-city communication present severe challenges for current free-space optical systems. Enabled by high-speed ...
  • Liske, Holly; Qian, Xiang; Deisseroth, Karl; Delp, Scott; Anikeeva, Polina Olegovna (Nature Publishing Group, 2013-10)
    The effect of electrical stimulation on neuronal membrane potential is frequency dependent. Low frequency electrical stimulation can evoke action potentials, whereas high frequency stimulation can inhibit action potential ...
  • Rotschild, Carmel; Lamhot, Y.; Gurgov, Costa H.; Barak, A.; Segev, M.; Saraf, M.; Lifshitz, E.; Christodoulides, D. N. (Institute of Electrical and Electronics Engineers, 2009-08)
    We study coupling between light and nano-particle suspensions, through surface-tension effects in capillaries. Increasing light intensity far-away from the interface causes huge changes in the fluid level, manifesting ...
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