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Browsing MIT Open Access Articles by Title

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  • Sheng, Xing; Liu, Jifeng; Michel, Jurgen; Agarwal, Anuradha Murthy; Kimerling, Lionel C. (Institute of Electrical and Electronics Engineers, 2010-02)
    Light trapping has been an important issue for thin film silicon solar cells because of the low absorption coefficient in the near infrared range. In this paper, we present a photonic structure which combines anodic aluminum ...
  • Fletcher, Richard Ribon; Han, Jing (Institute of Electrical and Electronics Engineers, 2009-07)
    We present a differential front end design for improving the performance of short-range low-cost Doppler radars for vital sign detection with application to automotive driver safety systems, health monitoring, and security ...
  • Codd, Daniel S.; Carlson, Andrew T.; Rees, Jennifer; Slocum, Alexander H. (Elsevier, 2010-10)
    A low cost, high flux, large area solar simulator has been designed, built and characterized for the purpose of studying optical melting and light absorption behavior of molten salts. Seven 1500 W metal halide outdoor ...
  • Fucetola, Corey P.; Korre, Hasan; Berggren, Karl K. (American Vacuum Society (AVS), 2009-12)
    The authors report demonstration of a low-cost ( ∼ 1000 USD) interference lithography system based on a Lloyd’s mirror interferometer that is capable of ∼ 300 nm pitch patterning. The components include only a 405 nm GaN ...
  • Gong, Nan-Wei; Wang, Chiu-Yen; Paradiso, Joseph A.; Gong, Nan-wei (Institute of Electrical and Electronics Engineers (IEEE), 2012-10)
    We describe the concept of fabricating low-cost sensor tape for fine-grid environmental sensing based on roll-to-roll manufacturing processes. We experiment with constructing sensors and electronic connections with low-cost ...
  • Demirbas, Umit; Li, Duo; Birge, Jonathan R.; Sennaroglu, Alphan; Petrich, Gale S.; Kolodziejski, Leslie A.; Kaertner, Franz X.; Fujimoto, James G. (Optical Society of America, 2009-07)
    We present three Cr[superscript 3+]:Colquiriite lasers as low-cost alternatives to Ti:Sapphire laser technology. Single-mode laser diodes, which cost only $150 each, were used as pump sources. In cw operation, with ~520 ...
  • Bhattacharyya, Rahul; Floerkemeier, Christian; Sarma, Sanjay Emani (Institute of Electrical and Electronics Engineers, 2010-09)
    Radio-frequency identification (RFID) has been well established as an effective technology for track and trace applications. In this paper, we go beyond the ID in RFID, and discuss the potential for RFID tags to be used ...
  • Reich, Robert K.; Gregory, James A.; Young, Douglas J.; Loomis, Andrew H.; Clark, Harry R., Jr.; Burke, Barry E.; Westhoff, Richard C. (Society of Photo-optical Instrumentation Engineers, 2009-01)
    Dark current for back-illuminated (BI) charge-coupled-device (CCD) imagers at Lincoln Laboratory has historically been higher than for front-illuminated (FI) detectors. This is presumably due to high concentrations of ...
  • Ozsvath, Peter; Lipshitz, Robert; Thurston, Dylan P. (National Academy of Sciences (U.S.), 2011-04)
    Heegaard Floer theory is a kind of topological quantum field theory (TQFT), assigning graded groups to closed, connected, oriented 3-manifolds and group homomorphisms to smooth, oriented four-dimensional cobordisms. Bordered ...
  • Rinnerbauer, Veronika; Senkevich, Jay; Joannopoulos, John D.; Soljacic, Marin; Celanovic, Ivan (American Vacuum Society (AVS), 2012-11)
    The authors study the use of thin ( ∼ 230 nm) tantalum (Ta) layers on silicon (Si) as a low emissivity (high reflectivity) coating for high-temperature Si devices. Such coatings are critical to reduce parasitic radiation ...
  • Monroe, Jocelyn; Formaggio, Joseph A.; Miller, M. L.; Monreal, B.; Ott, Richard A.; Sonley, T. J. (American Physical Society, 2010-05)
    Results are reported from a joint analysis of Phase I and Phase II data from the Sudbury Neutrino Observatory. The effective electron kinetic energy threshold used is Teff=3.5 MeV, the lowest analysis threshold yet achieved ...
  • Choi, Sung-Soon; Jung, Kyomin; Moon, Byung-Ro (Institute of Electrical and Electronics Engineers, 2009-02)
    For a real-valued function f defined on {0,1}n , the linkage graph of f is a hypergraph that represents the interactions among the input variables with respect to f . In this paper, lower and upper bounds for the number ...
  • Tsitsiklis, John N.; Olshevsky, Alexander (Institute of Electrical and Electronics Engineers (IEEE), 2011-02)
    We derive lower bounds on the convergence speed of a widely used class of distributed averaging algorithms. In particular, we prove that any distributed averaging algorithm whose state consists of a single real number and ...
  • Colding, Tobias; Minicozzi, William P., II (Springer-Verlag, 2011-03)
    We prove lower bounds for the Hausdorff measure of nodal sets of eigenfunctions.
  • Attiya, Hagit; Censor-Hillel, Keren (Society for Industrial and Applied Mathematics, 2010-12)
    This paper studies the inherent trade-off between termination probability and total step complexity of randomized consensus algorithms. It shows that for every integer $k$, the probability that an $f$-resilient randomized ...
  • Indyk, Piotr; Do Ba, Khanh; Price, Eric C.; Woodruff, David P. (Society for Industrial and Applied Mathematics, 2010-01)
    We consider the following k-sparse recovery problem: design an m x n matrix A, such that for any signal x, given Ax we can efficiently recover ^x satisfying x|| ^x||1 [less than or equal to] C min[subscript k]-sparse ...
  • Como, Giacomo; Dahleh, Munther A. (Institute of Electrical and Electronics Engineers, 2009-02)
    Information-theoretic lower bounds on the estimation error are derived for problems of distributed computation. These bounds hold for a network attempting to compute a real-vector-valued function of the global information, ...
  • Osqui, Mitra; Megretski, Alexandre; Roozbehani, Mardavij (Institute of Electrical and Electronics Engineers (IEEE), 2012-03)
    This paper deals with the task of finding certified lower bounds for the performance of Analog to Digital Converters (ADCs). A general ADC is modeled as a causal, discrete-time dynamical system with outputs taking values ...
  • Ozdaglar, Asuman E.; Acemoglu, Daron; Lobel, Inna; Dahleh, Munther A. (Institute of Electrical and Electronics Engineers, 2009-07)
    e study the rate of convergence of Bayesian learning in social networks. Each individual receives a signal about the underlying state of the world, observes a subset of past actions and chooses one of two possible actions. ...
  • Harvey, R.W.; Meneghini, O.; Schmidt, A.E.; Smirnov, A.P.; Wilson, J.R.; Wallace, Gregory Marriner; Hubbard, Amanda E.; Bonoli, Paul T.; Faust, Ian Charles; Hughes, Jerry W.; Labombard, Brian; Parker, Ronald R.; Shiraiwa, Shunichi; Whyte, Dennis G.; Wright, John C.; Wukitch, Stephen James (IOP Publishing, 2011-07)
    Experimental observations of lower hybrid current drive (LHCD) at high density on the Alcator C-Mod tokamak are presented in this paper. Bremsstrahlung emission from relativistic fast electrons in the core plasma drops ...
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