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Browsing MIT Open Access Articles by Title

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  • Chandrakasan, Anantha P.; Sze, Vivienne; Mercier, Patrick Philip; Daly, Denis C.; Lee, Fred S.; Wentzloff, David D.; Ginsburg, Brian P.; Blazquez, Raul (Institute of Electrical and Electronics Engineers, 2009-03)
    Ultra-wide-band (UWB) communication has a variety of applications ranging from wireless USB to radio frequency (RF) identification tags. For many of these applications, energy is critical due to the fact that the radios ...
  • Pilawa, Robert; Pallo, Nathan A.; Chan, Walker R.; Perreault, David J.; Celanovic, Ivan (Institute of Electrical and Electronics Engineers, 2010-02)
    This paper describes the design, optimization, and evaluation of the power electronics circuitry for a low-power portable thermophotovotaic (TPV) generator system. TPV system is based on a silicon micro-reactor design and ...
  • Doostmohammadi, Amin; Stocker, Roman; Ardekani, Arezoo M. (National Academy of Sciences, 2012-02)
    Microorganisms play pivotal functions in the trophic dynamics and biogeochemistry of aquatic ecosystems. Their concentrations and activities often peak at localized hotspots, an important example of which are pycnoclines, ...
  • Stocker, Roman; Doostmohammadi, Amin; Ardekani, Arezoo M. (National Academy of Sciences (U.S.), 2012-02)
    Microorganisms play pivotal functions in the trophic dynamics and biogeochemistry of aquatic ecosystems. Their concentrations and activities often peak at localized hotspots, an important example of which are pycnoclines, ...
  • Laprevote, Vincent; Oliva, Aude; Ternois, Anne-Sophie; Schwan, Raymund; Thomas, Pierre; Boucart, Muriel (Frontiers Research Foundation, 2013-05)
    Studies have shown that patients with schizophrenia exhibit visual processing impairments, particularly regarding the processing of spatial frequencies. In a previous work, we found that, compared to healthy volunteers, ...
  • Remillard, Ronald Alan; Steiner, James F.; McClintock, Jeffrey E.; Orosz, Jerome A.; Bailyn, Charles D.; Kolehmainen, Mari; Straub, Odele (IOP Publishing, 2014-09)
    Building upon a new dynamical model for the X-ray binary LMC X-3, we measure the spin of its black hole (BH) primary via the continuum-fitting method. We consider over one thousand thermal-state Rossi X-ray Timing Explorer ...
  • Holschuh, Bradley; Obropta, Edward W.; Newman, Dava (Institute of Electrical and Electronics Engineers (IEEE), 2014-06)
    This paper describes the modeling, development, and testing of low spring index nickel titanium (NiTi) coil actuators designed for use in wearable compression garments, and presents a prototype tourniquet system using these ...
  • Albrecht, Simon; Marcy, Geoffrey W.; Howard, Andrew W.; Isaacson, Howard; Johnson, John A.; Winn, Joshua Nathan (IOP Publishing, 2013-06)
    We measure the sky-projected stellar obliquities (λ) in the multiple-transiting planetary systems KOI-94 and Kepler-25, using the Rossiter-McLaughlin effect. In both cases, the host stars are well aligned with the orbital ...
  • Lee, Kyeong-Jae; Qazi, Masood; Kong, Jing; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers, 2010-10)
    In this paper, we characterize the performance of monolithically integrated graphene interconnects on a prototype 0.35-μm CMOS chip. The test chip implements an array of transmitter/receivers to analyze the end-to-end data ...
  • Chu, Xiang-qiang; Lu, Kao-Hsiang; Tyagi, Madhu Sudan; Mou, Chung-Yuan; Chen, Sow-Hsin (American Physical Society, 2010-08)
    Quasielastic neutron scattering was used to study the dynamics of three-dimensional confined water in a hydrophobic mesoporous material designated as CMK-1 in the temperature range from 250 to 170 K. We observe a crossover ...
  • Sodini, Charles G.; Bulovic, Vladimir; Akinwande, Akintunde Ibitayo; Wang, Annie I.; Yaglioglu, Burag (Institute of Electrical and Electronics Engineers, 2009-12)
    We report a low temperature ( ~ 100à °C) lithographic method for fabricating hybrid metal oxide/organic field-effect transistors (FETs) that combine a zinc-indium-oxide (ZIO) semiconductor channel and organic, parylene, ...
  • Kimerling, Lionel C.; McComber, Kevin A.; Lui, Jifeng; Michel, Jurgen (Institute of Electrical and Electronics Engineers, 2009-11)
    Polycrystalline germanium (poly-Ge) grown on amorphous Si (a-Si) by ultra-high vacuum chemical vapor deposition (UHVCVD) over oxide barriers at low temperatures (Tles450degC) exhibits a larger grain size and lower defect ...
  • Li, Ye; Qin, Zhenping; Guo, Hongxia; Yang, Hanxiao; Zhang, Guojun; Ji, Shulan; Zeng, Tingying (Public Library of Science, 2014-12)
    In this work, the positively or negatively charged anatase TiO[subscript 2] nanoparticles were synthesized via a low temperature precipitation-peptization process (LTPPP) in the presence of poly(ethyleneimine) (PEI) and ...
  • Chua, Song Liang; Chong, Yidong; Stone, A. Douglas; Soljacic, Marin; Bravo-Abad, Jorge (Optical Society of America, 2011-01)
    We present a theoretical analysis of lasing action in photonic crystal surface-emitting lasers (PCSELs). The semiclassical laser equations for such structures are simulated with three different theoretical techniques: exact ...
  • Kumar, Sushil; Hu, Qing; Reno, John L. (Institute of Electrical and Electronics Engineers, 2009-08)
    We report operation of v ~ 2.7 THz quantum-cascade lasers (QCLs) up to 174 K. A new three-well active region, one-well injector scheme is utilized to lower the operating current densities. While the temperature performance ...
  • Chandrakasan, Anantha P.; Mercier, Patrick Philip; Bhardwaj, Manish; Daly, Denis C. (Institute of Electrical and Electronics Engineers, 2010-06)
    This paper describes a digital baseband designed for use in a non-coherent IR-UWB system. Owing to the nonlinear statistics introduced by the energy-sampling RF front-end, the baseband employs a new quadratic correlation ...
  • Pinheiro, Elaine M.; Xie, Zhigang; Norovich, Amy L.; Vidaki, Marina; Tsai, Li-Huei; Gertler, Frank (Nature Publishing Group, 2011-07)
    During corticogenesis, pyramidal neurons (~80% of cortical neurons) arise from the ventricular zone, pass through a multipolar stage to become bipolar and attach to radial glia[superscript 1], [superscript 2], and then ...
  • Pinheiro, Elaine M.; Xie, Zhigang; Norovich, Amy L.; Vidaki, Marina; Tsai, Li-Huei; Gertler, Frank (Nature Publishing Group, 2011-07)
    During corticogenesis, pyramidal neurons (~80% of cortical neurons) arise from the ventricular zone, pass through a multipolar stage to become bipolar and attach to radial glia[superscript 1, 2], and then migrate to their ...
  • Perez, Alejandro; Platt, Robert; Konidaris, George; Lozano-Perez, Tomas; Kaelbling, Leslie P. (Institute of Electrical and Electronics Engineers (IEEE), 2012-05)
    The RRT* algorithm has recently been proposed as an optimal extension to the standard RRT algorithm [1]. However, like RRT, RRT* is difficult to apply in problems with complicated or underactuated dynamics because it ...
  • Tedrake, Russell Louis (MIT Press, 2009-06)
    Recent advances in the direct computation of Lyapunov functions using convex optimization make it possible to efficiently evaluate regions of stability for smooth nonlinear systems. Here we present a feedback motion ...
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