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Browsing MIT Open Access Articles by Title

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  • Adams, Allan; Jockers, Hans; Kumar, Vijay; Lapan, Joshua M. (Springer-Verlag, 2011-12)
    We study sigma models in AdS4 with global N = 1 supersymmetry and find that they differ significantly from their flat-space cousins — the target space is constrained to be a K¨ahler manifold with an exact K¨ahler form, ...
  • Onbasli, Mehmet Cengiz; Okyay, Ali K. (SPIE--the International Society for Optical Engineering, 2010-08)
    State-of-the-art copper interconnects suffer from increasing spatial power dissipation due to chip downscaling and RC delays reducing operation bandwidth. Wide bandwidth, minimized Ohmic loss, deep sub-wavelength confinement ...
  • Bernardi, Marco; Lohrman, Jessica; Kirkeminde, Alec; Ferralis, Nicola; Grossman, Jeffrey C.; Ren, Shenqiang; Kumar, Priyank Vijaya (American Chemical Society (ACS), 2012-09)
    Carbon materials are excellent candidates for photovoltaic solar cells: they are Earth-abundant, possess high optical absorption, and maintain superior thermal and photostability. Here we report on solar cells with active ...
  • Rusina, Anastasia; Durach, Maxim; Nelson, Keith Adam; Stockman, Mark I. (SPIE, 2010-08)
    Here, we establish the principal limits for the nanoconcentration of the THz radiation in metal/dielectric waveguides and determine their optimum shapes required for this nanoconcentration. We predict that the adiabatic ...
  • Duguet, T.; Unal, Baris; Ledieu, J.; Dubois, J. M.; Fournee, V.; Thiel, P. A. (American Physical Society, 2011-02)
    Among the three coexisting types of terraces found on the twofold surface of the d-Al-Cu-Co quasicrystal, nanodomains are essentially observed on the transition-metal rich ones, with a coherent interface boundary. Both ...
  • Antoniadis, Dimitri A. (Institute of Electrical and Electronics Engineers, 2010-01)
    Leading edge CMOS technologies today are unique examples of nanoscale engineering at an industrial scale. As we celebrate this remarkable achievement of our industry that forms the ever-expanding technology basis of modern ...
  • Wang, Evelyn N.; Xiao, Rong; Chu, Kuang-Han (SPIE, 2010-02)
    Microfluidic systems offer compact and efficient thermal management strategies. In this work, we investigate novel nanostructured surfaces to control fluidic behavior and enhance heat dissipation in microfluidic systems. ...
  • Bettinger, Christopher J.; Kulig, Katherine M.; Vacanti, Joseph P.; Langer, Robert; Borenstein, Jeffrey T. (Mary Ann Liebert, Inc., 2009-07)
    Synthetic substrates that mimic the properties of extracellular matrix proteins hold significant promise for use in systems designed for tissue engineering applications. In this report, we designed a synthetic polymeric ...
  • Buongiorno, Jacopo; Hu, Lin-Wen (American Society of Mechanical Engineers, 2009-12)
    Colloidal dispersions of nanoparticles are known as `nanofluids'. Such engineered fluids offer the potential for enhancing heat transfer, particularly boiling heat transfer, while avoiding the drawbacks (i.e., erosion, ...
  • Kim, Sung Jae; Song, Yong-Ak; Han, Jongyoon (Royal Society of Chemistry, 2010-01)
    Recently, a new type of electrokinetic concentration devices has been developed in a microfluidic chip format, which allows efficient trapping and concentration of biomolecules by utilizing ion concentration polarization ...
  • Picallo, Clara; Gravelle, Simon; Joly, Laurent; Charlaix, Elisabeth; Bocquet, Lyderic (American Physical Society, 2013-12)
    Osmosis describes the flow of water across semipermeable membranes powered by the chemical free energy extracted from salinity gradients. While osmosis can be expressed in simple terms via the van ’t Hoff ideal gas formula ...
  • Vandamme, Matthieu; Ulm, Franz-Josef (National Academy of Sciences, 2009-06)
    Concrete, the solid that forms at room temperature from mixing Portland cement with water, sand, and aggregates, suffers from time-dependent deformation under load. This creep occurs at a rate that deteriorates the durability ...
  • Randall, Nicholas X.; Vandamme, Matthieu; Ulm, Franz-Josef (Materials Research Society, 2009-03)
    Instrumented indentation (referred to as nanoindentation at low loads and low depths) has now become established for the single point characterization of hardness and elastic modulus of both bulk and coated materials. This ...
  • Yildiz, Bilge; Van Vliet, Krystyn J.; Herbert, Francis William (Cambridge University Press, 2011-03)
    The damage accumulation behavior of different grain boundary structures in Inconel 690 (Ni-29wt%Cr-9wt%Fe) was investigated in the presence of large, localized plastic strains induced by nanoindentation. Spatially-resolved ...
  • DeMuth, Peter Charles; Su, Xingfang; Samuel, Raymond E.; Hammond, Paula T.; Irvine, Darrell J. (Wiley-Blackwell Publishers, 2010-11)
    Multilayer-coated microneedles achieve transcutaneous delivery of plasmid DNA to the viable epidermis. Cy3-labeled plasmid DNA encoding luciferase (yellow) is deposited on biodegradable microneedle arrays through multilayer ...
  • Srisungsitthisunti, Pornsak; Tansarawiput, Chookiat; Zhang, Huaichen; Qi, Minghao; Xu, Xianfan; Moon, Euclid Eberle (SPIE, 2010-08)
    We describe a method of detecting nanometer-level gap and tip/tilt alignment between a focusing zone plate mask and a silicon substrate using interferometric-spatial-phase-imaging (ISPI). The zone plate mask is used to ...
  • Wu, Jonathan; Mari-Buye, Nuria; Fernandez Muinos, Teresa; Borros, Salvador; Favia, Pietro; Semino, Carlos Eduardo (BioMed Central Ltd, 2010-12)
    Background: Isolated hepatocytes removed from their microenvironment soon lose their hepatospecific functions when cultured. Normally hepatocytes are commonly maintained under limited culture medium supply as well as ...
  • Lo, Justin H.; von Maltzahn, Geoffrey; Douglass, Jacqueline; Park, Ji-Ho; Sailor, Michael J.; Ruoslahti, Erkki; Bhatia, Sangeeta N. (Royal Society of Chemistry, 2013-06)
    The success of nanoparticle-based cancer therapies ultimately depends on their ability to selectively and efficiently accumulate in regions of disease. Outfitting nanoparticles to actively target tumor-specific markers has ...
  • Goldberg, Michael Solomon; Xing, Deyin; Ren, Yin; Orsulic, Sandra; Bhatia, Sangeeta N.; Sharp, Phillip A. (National Academy of Sciences (U.S.), 2011-01)
    Inhibition of the DNA repair enzyme poly(ADP-ribose) polymerase 1 (PARP1) with small molecules has been shown to be an effective treatment for ovarian cancer with BRCA mutations. Here, we report the in vivo administration ...
  • Mashelkar, Raghunath Anant; Chimote, Geetanjali; Soni, Shivani; Harfouche, Rania; Basu, Kaushik; Sengupta, Shiladitya (United States National Academy of Sciences, 2009-03)
    The MAPK signal transduction cascade is dysregulated in a majority of human tumors. Here we report that a nanoparticle-mediated targeting of this pathway can optimize cancer chemotherapy. We engineered nanoparticles from ...
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