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Browsing MIT Open Access Articles by Title

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  • Dimitriou, Christopher J.; Ewoldt, Randy H.; McKinley, Gareth H. (Society of Rheology, 2012-10)
    Large amplitude oscillatory shear (LAOS) is used as a tool to probe the nonlinear rheological response of a model elasto-viscoplastic material (a Carbopol microgel). In contrast to most recent studies, these large amplitude ...
  • Silbey, Robert (Elsevier, 2011-09)
    Recent experiments on light harvesting complexes have shown clear indication of coherent transport of excitations in these aggregates. We review the theoretical models that have been used to study energy transfer in molecular ...
  • Goosse, H.; Brovkin, V.; Fichefet, T.; Haarsma, R.; Huybrechts, P.; Jongma, J.; Mouchet, A.; Selton, F.; Barriat, P.-Y.; Campin, Jean-Michel; Deleersnijder, E.; Driesschaert, E.; Goelzer, H.; Janssens, I.; Loutre, M.-F.; Morales Maqueda, M. A.; Opsteegh, T.; Mathieu, P.-P.; Munhoven, G.; Pettersson, E. J.; Renssen, H.; Roche, D. M.; Schaeffer, M.; Tartinville, B.; Timmermann, A.; Weber, S. L. (Copernicus Publications on behalf of the European Geosciences Union, 2010-11)
    The main characteristics of the new version 1.2 of the three-dimensional Earth system model of intermediate complexity LOVECLIM are briefly described. LOVECLIM 1.2 includes representations of the atmosphere, the ocean and ...
  • Lobovsky, Maxim B.; Keating, Steven John; Setapen, Adam M.; Gero, Katy I.; Hosoi, Anette E.; Iagnemma, Karl D.; Cheng, Nadia Gen San (Institute of Electrical and Electronics Engineers (IEEE), 2012-05)
    Hyper-redundant manipulators can be fragile, expensive, and limited in their flexibility due to the distributed and bulky actuators that are typically used to achieve the precision and degrees of freedom (DOFs) required. ...
  • Chen, Hao; Hansen, Malik; Playter, Robert; Cheng, Nadia Gen San; Ishigami, Genya; Hawthorne, Stephan A.; Telleria, Maria J.; Iagnemma, Karl (Institute of Electrical and Electronics Engineers (IEEE), 2010-05)
    Soft robotic systems have applications in industrial, medical, and security applications. Many applications require these robots to be small and lightweight. One challenge in developing a soft robotic system is to drive ...
  • McCarthy, Matthew; Peters, Teresa Baker; Allison, Jon; Dominguez Espinosa, Alonso; Jenicek, David P.; Kariya, Harumichi Arthur; Koveal, Catherine; Brisson, John G., II; Lang, Jeffrey H.; Wang, Evelyn N. (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    We report the design and analysis of a high-power air-cooled heat exchanger capable of dissipating over 1000 W with 33 W of input electrical power and an overall thermal resistance of less than 0.05 K/W. The novelty of the ...
  • Weichenberg, Guy Elli; Chan, Vincent W. S.; Medard, Muriel (Institute of Electrical and Electronics Engineers (IEEE), 2009-07)
    In our previous work [Chan, “Optical flow switching,” in BROADNETS 2006, pp. 1-8; Weichenberg, “Cost-efficient optical network architectures,” in ECOC 2006, pp. 1-2; Weichenberg, “On the throughput-cost tradeoff of ...
  • Tang, Sai Chun; Otten, David M.; Keim, Thomas A.; Perreault, David J. (Institute of Electrical and Electronics Engineers (IEEE), 2010-11)
    This paper presents techniques for the design of high-power Lundell alternators with integrated switched-mode rectifiers. A multisection stator winding and interleaved rectifier arrangement is introduced that enables high ...
  • Perreault, David J.; Kassakian, John G. (Institute of Electrical and Electronics Engineers (IEEE), 1999-06)
    This paper presents the design and experimental evaluation of a six-cell 6 kW cellular (parallel) rectifier system which operates at nearly unity power factor. The cellular rectifier system implements both distributed load ...
  • Chow, Albert C.; Perreault, David J. (Institute of Electrical and Electronics Engineers (IEEE), 2003-04)
    Active ripple filters can substantially attenuate power converter ripple, allowing considerable reduction in passive filter component size. Investigated here is a hybrid passive/active filter topology that achieves ripple ...
  • Park, Barratt; Steeves, Adam H.; Kuyanov, Kirill; Neill, Justin L.; Field, Robert W. (American Institute of Physics (AIP), 2011-07)
    Chirped-pulse millimeter-wave (CPmmW) spectroscopy is the first broadband (multi-GHz in each shot) Fourier-transform technique for high-resolution survey spectroscopy in the millimeter-wave region. The design is based on ...
  • Perreault, David J.; Kassakian, John G.; Zhu, Mingjuan; Caliskan, Vahe; Neugebauer, Timothy C.; Guttowski, Stephan (Institute of Electrical and Electronics Engineers (IEEE), 2005-03)
    An active ripple filter is an electronic circuit that cancels or suppresses the ripple current and electromagnetic interference generated by the power stage of a power converter, thus reducing the passive filtration ...
  • Parlikar, T.A.; Chang, W.S.; Qiu, Y.H.; Seeman, M.D.; Perreault, David J.; Kassakian, John G.; Keim, Thomas A. (Institute of Electrical and Electronics Engineers (IEEE), 2005-10)
    In conventional internal combustion engines, engine valve displacements are fixed relative to crankshaft position. If these valves were actuated as a variable function of crankshaft angle, significant improvements in fuel ...
  • Gassend, Blaise Laurent Patrick; Velasquez-Garcia, Luis Fernando; Akinwande, Akintunde Ibitayo (Institute of Electrical and Electronics Engineers, 2010-06)
    This paper reports the design and fabrication of high-aspect-ratio needlelike silicon structures that can have complex geometry. The structures are hundreds of micrometers tall with submicrometer-sharp protrusions, and ...
  • Sheng, Xing; Broderick, Lirong Z.; Hu, Juejun; Yang, Li; Eshed, Anat; Fitzgerald, Eugene A.; Michel, Jurgen; Kimerling, Lionel C. (Optical Society of America, 2011-05)
    We developed a high-index-contrast photonic structure for improving the light extraction efficiency of light-emitting diodes (LEDs) by a self-assembly approach. In this approach, a two-dimensional grating can be ...
  • Brunetti, Philip M.; Wimmer, Ralf D.; Liang, Li; Siegle, Joshua H.; Voigts, Jakob; Halassa, Michael M.; Wilson, Matthew A. (MyJoVE Corporation, 2014-09)
    The number of physiological investigations in the mouse, mus musculus, has experienced a recent surge, paralleling the growth in methods of genetic targeting for microcircuit dissection and disease modeling. The introduction ...
  • Chester, David A.; Bermel, Peter A.; Joannopoulos, John D.; Soljacic, Marin; Celanovic, Ivan (Optical Society of America, 2011-03)
    Solar thermal, thermoelectric, and thermophotovoltaic (TPV) systems have high maximum theoretical efficiencies; experimental systems fall short because of losses by selective solar absorbers and TPV selective emitters. To ...
  • Bermel, Peter A.; Ghebrebrhan, Michael; Chan, Walker; Yeng, YiXiang; Araghchini, Mohammad; Hamam, Rafif E.; Marton, Christopher Henry; Jensen, Klavs F.; Soljacic, Marin; Joannopoulos, John D.; Johnson, Steven G.; Celanovic, Ivan (Optical Society of America, 2010-08)
    Despite their great promise, small experimental thermophotovoltaic (TPV) systems at 1000 K generally exhibit extremely low power conversion efficiencies (approximately 1%), due to heat losses such as thermal emission of ...
  • Timko, Brian P.; Cohen-Karni, Tzahi; Qing, Quan; Tian, Bozhi; Lieber, Charles M. (Institute of Electrical and Electronics Engineers, 2010-05)
    Nanowire FETs (NWFETs) are promising building blocks for nanoscale bioelectronic interfaces with cells and tissue since they are known to exhibit exquisite sensitivity in the context of chemical and biological detection, ...
  • Lee, Howon; Fang, Nicholas Xuanlai; Zheng, Xiaoyu; Deotte, Joshua; Alonso, Matthew P.; Farquar, George R.; Weisgraber, Todd H.; Gemberling, Steven; Spadaccini, Christopher M. (American Institute of Physics (AIP), 2012-12)
    The rapid manufacture of complex three-dimensional micro-scale components has eluded researchers for decades. Several additive manufacturing options have been limited by either speed or the ability to fabricate true ...
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