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Browsing MIT Open Access Articles by Title

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  • Wafer-scale 3D integration of InGaAs image sensors with Si readout circuits 
    Shaver, David C.; Keast, Craig L.; Wheeler, Bruce D.; Hu, WeiLin; Bolkhovsky, Vladimir; Berger, Robert; Suntharalingam, Vyshnavi; Soares, Antonio M.; Donnelly, Joseph P.; Mahoney, Leonard J.; Oakley, Douglas C.; Chapman, David C.; Knecht, Jeffrey M.; Yost, Donna-Ruth W.; Chen, Chang-Lee (Institute of Electrical and Electronics Engineers, 2009-10)
    In this work, we modified our wafer-scale 3D integration technique, originally developed for Si, to hybridize InP-based image sensor arrays with Si readout circuits. InGaAs image arrays based on the InGaAs layer grown on ...
  • Wafer-scale 3D integration of silicon-on-insulator RF amplifiers 
    Keast, Craig L.; Chen, Chang-Lee; Chen, Chenson K.; Yost, Donna-Ruth W.; Knecht, Jeffrey M.; Wyatt, Peter W.; Burns, James A.; Warner, Keith; Gouker, Pascale M.; Healey, Paul D.; Wheeler, Bruce D. (Institute of Electrical and Electronics Engineers, 2009-02)
    RF amplifiers are demonstrated using a three- dimensional (3D) wafer-scale integration technology based on silicon-on-insulator (SOI) CMOS process. This new 3D implementation reduces the amplifier size and shortens ...
  • Wake-body Resonance of Long Flexible Structures is Dominated by Counterclockwise Orbits 
    Modarres-Sadeghi, Yahya; Karniadakis, George E.; Bourguet, Remi; Triantafyllou, Michael S. (American Physical Society (APS), 2011-09)
    We identify a dominant mechanism in the interaction between a slender flexible structure undergoing free vibrations in sheared cross-flow and the vortices forming in its wake: energy is transferred from the fluid to the ...
  • Wake Capture, Particle Breakup, and Other Artifacts Associated with Counterflow Virtual Impaction 
    Pekour, Mikhail S.; Cziczo, Daniel James (Taylor & Francis, 2011-03)
    Counterflow virtual impaction is used to inertially separate cloud elements from inactivated aerosol. Previous airborne, ground-based, and laboratory studies using this technique exhibit artifacts that are not fully explained ...
  • Wake of a heavy quark in non-Abelian plasmas: Comparing kinetic theory and the anti-de Sitter space/conformal field theory correspondence 
    Hong, Juhee; Teaney, Derek; Chesler, Paul Michael (American Physical Society, 2012-06)
    We compute the nonequilibrium stress tensor induced by a heavy quark moving through weakly coupled QCD plasma at the speed of light and compare the result to N=4 super-Yang-Mills theory at strong coupling. The QCD Boltzmann ...
  • The wake structure behind a porous obstruction and its implications for deposition near a finite patch of emergent vegetation 
    Chen, Zhengbing; Ortiz, Alejandra Campbell; Zong, Lijun; Nepf, Heidi (American Geophysical Union (Wiley platform), 2012-09)
    This experimental study describes the mean and turbulent flow structure in the wake of a circular array of cylinders, which is a model for a patch of emergent vegetation. The patch diameter, D, and patch density, a (frontal ...
  • Waking up dormant tumors 
    Tse, Joyce C.; Kalluri, Raghu (BioMed Central Ltd., 2011-06)
    As appreciation grows for the contribution of the tumor microenvironment to the progression of cancer, new evidence accumulates to support that the participation of stromal cells can extend beyond the local environment. ...
  • Walking Is Not Like Reaching: Evidence from Periodic Mechanical Perturbations 
    Ahn, Jooeun; Hogan, Neville (Public Library of Science, 2012-03)
    The control architecture underlying human reaching has been established, at least in broad outline. However, despite extensive research, the control architecture underlying human locomotion remains unclear. Some studies ...
  • Walking on water 
    Bush, John W. M.; Hu, David L. (American Institute of Physics, 2010-06)
    The ingenious methods employed by insects and spiders to move across a water surface rely on microphysics that is of little use to larger water walkers but of considerable interest to the microfluidics community.
  • Wandering Neuronal Migration in the Postnatal Vertebrate Forebrain 
    Scott, Benjamin B.; Gardner, Timothy; Ji, Ni; Fee, Michale S.; Lois, Carlos (Society for Neuroscience, 2012-01)
    Most non-mammalian vertebrate species add new neurons to existing brain circuits throughout life, a process thought to be essential for tissue maintenance, repair, and learning. How these new neurons migrate through the ...
  • The Wanderlust of Newborn Neocortical Interneurons 
    Sanjana, Neville E.; Scott, Benjamin Barnett (Society for Neuroscience, 2009-06)
    For proper formation of the cerebral cortex, immature neurons must travel from their birthplace within the walls of the lateral ventricle to their final destinations throughout the brain. This process requires active ...
  • War and the Media in Border Minstrelsy: The Ballad of Chevy Chase (book chapter) 
    Perry, Ruth (Ashgate, 2010-08)
    The ballad of Chevy Chase is a very old ballad, probably dating back to the fifteenth century and referring to events that transpired in the middle of that century or even back to the fourteenth century. Appreciated by ...
  • WARNING: Physics Envy May Be Hazardous To Your Wealth 
    Lo, Andrew W.; Mueller, Mark (Stallion Press for the Journal of Investment Management, 2010-04)
    The quantitative aspirations of economists and financial analysts have for many years been based on the belief that it should be possible to build models of economic systems—and financial markets in particular—that are ...
  • The water entry of decelerating spheres 
    Aristoff, Jeffrey M.; Truscott, Tadd T.; Techet, Alexandra H.; Bush, John W. M. (American Institute of Physics, 2010-03)
    We present the results of a combined experimental and theoretical investigation of the vertical impact of low-density spheres on a water surface. Particular attention is given to characterizing the sphere dynamics and the ...
  • Water entry of small hydrophobic spheres 
    Bush, John W. M.; Aristoff, Jeffrey M. (Cambridge University Press, 2008-12)
    We present the results of a combined experimental and theoretical investigation of the normal impact of hydrophobic spheres on a water surface. Particular attention is given to characterizing the shape of the resulting air ...
  • Water vapor and the dynamics of climate changes 
    Schneider, Tapio; O'Gorman, Paul Ambrose; Levine, Xavier J. (American Geophysical Union, 2010-07)
    Water vapor is not only Earth's dominant greenhouse gas. Through the release of latent heat when it condenses, it also plays an active role in dynamic processes that shape the global circulation of the atmosphere and thus ...
  • Wave functions for fractional Chern insulators 
    McGreevy, John; Swingle, Brian Gordon; Tran, Ky-Anh (American Physical Society, 2012-03)
    We provide a parton construction of wave functions and effective field theories for fractional Chern insulators. We also analyze a strong-coupling expansion in lattice gauge theory that enables us to reliably map the parton ...
  • Waveguiding at the Edge of a Three-Dimensional Photonic Crystal 
    Joannopoulos, John D.; Lu, Ling; Soljacic, Marin (American Physical Society, 2012-06)
    We find that electromagnetic waves can be guided at the edge of a three-dimensional photonic crystal in air. When the waveguide is defined by the intersection of two surface planes, the edge modes are associated with the ...
  • Wave-induced velocities inside a model seagrass bed 
    Luhar, Mitul; Coutu, Sylvain; Infantes, Eduardo; Fox, Samantha R.; Nepf, Heidi (American Geophysical Union, 2010-12)
    Laboratory measurements reveal the flow structure within and above a model seagrass meadow (dynamically similar to Zostera marina) forced by progressive waves. Despite being driven by purely oscillatory flow, a mean current ...
  • Wavelength beam combining of quantum cascade laser arrays for remote sensing 
    Sanchez-Rubio, Antonio; Goyal, Anish K.; Kansky, Jan E.; Capasso, Federico; Belkin, Mikhail A.; Diehl, Laurent; Pflügl, Christian; Lee, Benjamin G. (The International Society for Optical Engineering, 2009-08)
    Wavelength beam combining was used to co-propagate beams from 28 elements in a linear array of distributedfeedback quantum cascade lasers (DFB-QCLs). The overlap of the beams in the far-field is improved using wavelength ...
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