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Browsing MIT Open Access Articles by Title

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  • Peterson, J.W.; Huynh, Dinh Bao Phuong; Knezevic, David; Patera, Anthony T. (Elsevier, 2010-09)
    We present a certified reduced basis method for high-fidelity real-time solution of parametrized partial differential equations on deployed platforms. Applications include in situ parameter estimation, adaptive design and ...
  • Kiesewetter, Matthew K.; Michaelis, Vladimir K.; Walish, Joseph John; Griffin, Robert Guy; Swager, Timothy Manning (American Chemical Society (ACS), 2014-02)
    We illustrate the ability to place a water-insoluble biradical, bTbk, into a glycerol/water matrix with the assistance of a surfactant, sodium octyl sulfate (SOS). This surfactant approach enables a previously water insoluble ...
  • Griffin, Robert Guy; Prisner, T. F. (Royal Society of Chemistry, The, 2010-05)
    Sensitivity is a critical issue in NMR spectroscopy, microscopy and imaging, and the factor that often limits the success of various applications. The origin of low sensitivity in NMR is well known to be due to the small ...
  • Barnes, Alexander; Corzilius, Bjorn; Griffin, Robert Guy; Smith, Albert Andrew; Bertini, Ivano; Luchinat, Claudio (American Chemical Society (ACS), 2011-03)
    We report the dynamic nuclear polarization of 1H spins in magic-angle-spinning spectra recorded at 5 T and 84 K via the solid effect using Mn2+ and Gd[superscript 3+] complexes as polarizing agents. We show that the magnitude ...
  • Asaba, Tomoya; Han, Tianheng; Lawson, B. J.; Yu, F.; Tinsman, C.; Xiang, Z.; Li, G.; Lee, Young S.; Li, Lu (American Physical Society, 2014-08)
    Herbertsmithite ZnCu[subscript 3](OH)[subscript 6]Cl[subscript 2] is a kagome lattice antiferromagnet with spin-1/2 and has been demonstrated to be a likely candidate of spin liquid by a number of recent experiments. The ...
  • Fujita, T.; Yamaguchi, H.; Kimura, S.; Kashiwagi, T.; Hagiwara, M.; Matan, K.; Grohol, D.; Nocera, Daniel G.; Lee, Young S. (American Physical Society, 2012-03)
    We have performed high-field multifrequency electron spin resonance (ESR) and high-field magnetization measurements in magnetic fields H of up to 53 T on single crystals of the kagome-lattice antiferromagnet KFe[subscript ...
  • Michaelis, Vladimir K.; Smith, Albert A.; Haze, Olesya; Corzilius, Bjorn; Swager, Timothy Manning; Griffin, Robert Guy (American Chemical Society (ACS), 2013-02)
    We report direct [superscript 13]C dynamic nuclear polarization at 5 T under magic-angle spinning (MAS) at 82 K using a mixture of monoradicals with narrow EPR linewidths. We show the importance of optimizing both EPR ...
  • Ocalan, Murat; McKinley, Gareth H. (Springer-Verlag, 2013-06)
    Commercial applications of magnetorheological (MR) fluids often require operation at elevated temperatures as a result of surrounding environmental conditions or intense localized viscous heating. Previous experimental ...
  • Ni, Qing Zhe; Daviso, Eugenio; Markhasin, Evgeny; Temkin, Richard J.; Herzfeld, Judith; Can, Thach Van; Swager, Timothy Manning; Jawla, Sudheer Kumar; Griffin, Robert Guy (American Chemical Society (ACS), 2013-04)
    During the three decades 1980–2010, magic angle spinning (MAS) NMR developed into the method of choice to examine many chemical, physical, and biological problems. In particular, a variety of dipolar recoupling methods to ...
  • Gregoriou, Georgia G.; Zhou, Huihui; Desimone, Robert; Gotts, Stephen J. (American Association for the Advancement of Science (AAAS), 2009-05)
    Electrical recordings in humans and monkeys show attentional enhancement of evoked responses and gamma synchrony in ventral stream cortical areas. Does this synchrony result from intrinsic activity in visual cortex or from ...
  • Rivas, Juan M.; Han, Yehui; Leitermann, Olivia; Sagneri, Anthony D.; Perreault, David J. (Institute of Electrical and Electronics Engineers (IEEE), 2008-07)
    This paper presents a new switched-mode resonant inverter, which we term the inverter, that is well suited to operation at very high frequencies and to rapid on/off control. Features of this inverter topology include low ...
  • Hu, Jingying; Sagneri, Anthony D.; Rivas, Juan M.; Han, Yehui; Davis, Seth M.; Perreault, David J. (Institute of Electrical and Electronics Engineers (IEEE), 2012-01)
    This paper presents a resonant single-ended-primary-inductor-converter (SEPIC) converter and control method suitable for high frequency (HF) and very high frequency (VHF) dc-dc power conversion. The proposed design provides ...
  • Tivnan, Matthew; Wolf, David; Vishwanath, Karthik; Gurjar, Rajan S. (MDPI AG, 2015-08)
    Diffuse Correlation Spectroscopy (DCS) is a well-established optical technique that has been used for non-invasive measurement of blood flow in tissues. Instrumentation for DCS includes a correlation device that computes ...
  • Dahl, Jason; Hover, Franz S.; Triantafyllou, Michael S. (International Society of Offshore and Polar Engineers (ISOPE), 2008-07)
    String-like ocean structures, such as deep water marine risers are susceptible to a condition of dual lock-in, where both the in-line and transverse natural frequencies are excited due to vortex shedding in the wake. This ...
  • Zimmerman, Paul A.; Rice, Bryan J.; Piscani, Emil C.; Liberman, Vladimir (Society of Photo-optical Instrumentation Engineers, 2009-03)
    For several years, SEMATECH has invested significant effort into extending 193 nm immersion lithography by developing a set of high index materials. For high index immersion lithography (HIL) to enable 1.70NA imaging, a ...
  • Khorana, H. Gobind; Zhang, Shuguang; Chelikani, Prashen; Takayama, Hidehito; Reeves, Philip J. (Public Library of Science, 2008-06)
    The study of membrane protein structure and function requires their high-level expression and purification in fully functional form. We previously used a tetracycline-inducible stable mammalian cell line, HEK293S-TetR, for ...
  • Xu, Zhinan; Cook, Brian L.; Ge, Baosheng; Yu, Daoyong; Ren, Hui; Zhang, Shuguang (Public Library of Science, 2009-02)
    Chemokine receptors belong to a class of integral membrane G-protein coupled receptors (GPCRs) and are responsible for transmitting signals from the extracellular environment. However, the structural changes in the receptor, ...
  • Santagata, Sandro; Mendillo, Marc L.; Whitesell, Luke; Lindquist, Susan; Hu, Rong; Lin, Nancy U.; Collins, Laura C.; Hankinson, Susan E.; Schnitt, Stuart J.; Tamimi, Rulla M.; Ince, Tan A. (National Academy of Sciences, 2011-09)
    Heat-shock factor 1 (HSF1) is the master transcriptional regulator of the cellular response to heat and a wide variety of other stressors. We previously reported that HSF1 promotes the survival and proliferation of malignant ...
  • Kim, Jaewon; Horstmeyer, Roarke William; Kim, Ig-Jae; Raskar, Ramesh (Association for Computing Machinery, 2011-05)
    We present a photographic method to enhance intensity differences between objects at varying distances from the focal plane. By combining a unique capture procedure with simple image processing techniques, the ...
  • Han, Xue; Chow, Brian Y.; Zhou, Huihui; Klapoetke, Nathan Cao; Chuong, Amy S.; Rajimehr, Reza; Yang, Aimei; Baratta, Michael V.; Winkle, Jonathan Andrew; Desimone, Robert; Boyden, Edward Stuart (Frontiers Research Foundation, 2011-04)
    Technologies for silencing the electrical activity of genetically targeted neurons in the brain are important for assessing the contribution of specific cell types and pathways toward behaviors and pathologies. Recently ...
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