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Browsing MIT Open Access Articles by Title

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  • Syed, Z.; Scirica, B. M.; Stultz, Collin M.; Guttag, John V. (Institute of Electrical and Electronics Engineers, 2010-04)
    Information in electrocardiographic (ECG) signals is widely believed to have value in the short-term prediction of arrhythmias. This study evaluates the use of morphologic variability (MV), a recently proposed metric ...
  • Gasteiger, Hubert A.; Crumlin, Ethan; McGuire, Robert; Shao-Horn, Yang; Lu, Yi-chun (The Electrochemical Society, 2010-07)
    Rechargeable lithium-air batteries have the potential to provide ≈3 times higher specific energy of fully packaged batteries than conventional lithium rechargeable batteries. However, very little is known about the oxygen ...
  • Suntivich, Jin; Gasteiger, Hubert A.; Yabuuchi, Naoaki; Shao-Horn, Yang (The Electrochemical Society, 2010-07)
    Transition-metal oxides can exhibit high electrocatalytic activity for reactions such as the oxygen reduction reaction (ORR) in alkaline media. It is often difficult to measure and compare the activities of oxide catalysts ...
  • Song, Yong-Ak; Melik, Rohat; Rabie, Amr N.; Ibrahim, Ahmed M. S.; Moses, David; Tan, Ara; Han, Jongyoon; Lin, Samuel J. (Nature Publishing Group, 2011-10)
    Conventional functional electrical stimulation aims to restore functional motor activity of patients with disabilities resulting from spinal cord injury or neurological disorders. However, intervention with functional ...
  • Hamill, Michael J.; Jost, Marco; Wong, Cintyu; Bene, Nicholas C.; Drennan, Catherine L.; Elliott, Sean J. (MDPI AG, 2012-12)
    When exposed to known DNA-damaging alkylating agents, Escherichia coli cells increase production of four DNA repair enzymes: Ada, AlkA, AlkB, and AidB. The role of three enzymes (Ada, AlkA, and AlkB) in repairing DNA lesions ...
  • Strobel, Sebastian; Harry, Katherine J; Duan, Huigao; Yang, Joel K. W.; Manfrinato, Vitor Riseti; Berggren, Karl K. (IOP Publishing, 2011-08)
    We present a new method for developing hydrogen silsesquioxane (HSQ) by using electrical potentials and deionized water. Nested-L test structures with a pitch as small as 9 nm were developed using this electrochemical ...
  • Schindall, Joel E.; Ku, Daniel C.; Signorelli, Riccardo; Kassakian, John G. (Institute of Electrical and Electronics Engineers, 2009-10)
    The structure and behavior of the electrical double-layer capacitor (EDLC) are described. The use of activated carbon electrodes is discussed and the limitations on voltage and accessible surface area are presented. Metrics ...
  • Stern, Michael C.; Simeon, Fritz; Hatton, T. Alan; Herzog, Howard J. (Elsevier, 2013-08)
    This work describes a promising alternative to conventional thermal processes for absorber/desorber processing of for removal of CO[subscript 2] from flue gas streams at fossil fuel fired power plants. Our electrochemica ...
  • Kang, Byoungwoo; Ceder, Gerbrand (The Electrochemical Society, 2010-05)
    LiMnPO[subscript 4] was synthesized from an off-stoichiometric mix of starting materials with nominal composition LiMn[subscript 0.9]P[subscript 0.95]O[subscript 4−δ]. Stoichiometric LiMnPO[subscript 4] with particle size ...
  • Matts, Ian L.; Chen, Hailong; Ceder, Gerbrand (Electrochemical Society, 2013-06)
    Previously conducted high-throughput ab initio calculations have identified carbonophosphates as a new class of polyanion cathode materials. Li3MnCO3PO4 is the most promising candidate due to its high theoretical capacity ...
  • Vassilaras, Plousia E.; Ma, Xiaohua; Li, Xin; Ceder, Gerbrand (Electrochemical Society, 2012-11)
    Monoclinic NaNiO[subscript 2] is re-investigated as a positive electrode material for sodium ion batteries. We observe reversible Na extraction and insertion of about 120 mAh/g when NaNiO[subscript 2] is cycled between ...
  • Chiang, Yet-Ming; Carter, W. Craig; Woodford, William Henry (The Electrochemical Society, 2010-08)
    Fracture of electrode particles due to diffusion-induced stress has been implicated as a possible mechanism for capacity fade and impedance growth in lithium-ion batteries. In brittle materials, including many lithium ...
  • Ong, Shyue Ping; Andreussi, Oliviero; Wu, Yabi; Marzari, Nicola; Ceder, Gerbrand (American Chemical Society, 2011-05)
    We investigated the cathodic and anodic limits of six room-temperature ionic liquids (ILs) formed from a combination of two common cations, 1-butyl-3-methylimidazolium (BMIM) and N,N-propylmethylpyrrolidinium (P13), and ...
  • Biesheuvel, P. M.; Fu, Yeqing; Bazant, Martin Z. (SP MAIK Nauka/Interperiodica/Springer-Verlag, 2012-06)
    We present porous electrode theory for the general situation of electrolytes containing mixtures of mobile ions of arbitrary valencies and diffusion coefficients (mobilities). We focus on electrodes composed of primary ...
  • Ruan, Shiyun; Schuh, Christopher A. (Elsevier B.V., 2009-05)
    Al–Mn alloys with Mn content ranging from 0 to 15.8 at.% are prepared by electrodeposition from an ionic liquid at room temperature, and exhibit a remarkably broad range of structures. The alloys are characterized through ...
  • Rica, Raul A.; Bazant, Martin Z. (American Institute of Physics, 2010-11)
    Colloidal particles in electrolytes move in response to electric fields (electrophoresis) and salt concentration gradients (diffusiophoresis), and related flows also occur at fixed surfaces (electro-osmosis and diffusio-osmosis, ...
  • Purdon, Patrick Lee; Ching, Shinung; Brown, Emery N.; Pierce, Eric T.; Mukamel, Eran A.; Prerau, Michael J.; Walsh, John L.; Wong, Kin Foon K.; Salazar-Gomez, Andres F.; Harrell, Priscilla G.; Sampson, Aaron L.; Cimenser, Aylin; Kopell, Nancy J.; Tavares-Stoeckel, Casie; Habeeb, Kathleen; Merhar, Rebecca (National Academy of Sciences (U.S.), 2013-03)
    Unconsciousness is a fundamental component of general anesthesia (GA), but anesthesiologists have no reliable ways to be certain that a patient is unconscious. To develop EEG signatures that track loss and recovery of ...
  • Suleiman, R. (American Physical Society, 2009-11)
    We present results on the electroexcitation of the low mass resonances Δ(1232)P[subscript 33], N(1440)P[subscript 11], N(1520)D[subscript 13], and N(1535)S11 in a wide range of Q[superscript 2]. The results were obtained ...
  • Honegger, Thibault; Scott, Mark A.; Voldman, Joel; Yanik, Mehmet Fatih (Royal Society of Chemistry, 2013-01)
    Axons in the developing nervous system are directed via guidance cues, whose expression varies both spatially and temporally, to create functional neural circuits. Existing methods to create patterns of neural connectivity ...
  • Ghaffari, Roozbeh; Page, Scott Lawrence; Farrahi, Shirin; Sellon, Jonathan Blake; Freeman, Dennis M. (National Academy of Sciences (U.S.), 2013-02)
    The tectorial membrane (TM) clearly plays a mechanical role in stimulating cochlear sensory receptors, but the presence of fixed charge in TM constituents suggests that electromechanical properties also may be important. ...
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