Advanced Search
DSpace@MIT

Browsing MIT Open Access Articles by Title

Research and Teaching Output of the MIT Community

Browsing MIT Open Access Articles by Title

Sort by: Order: Results:

  • Li, Qing; Hoogeboom-Pot, Kathleen; Nardi, Damiano; Murnane, Margaret M.; Kapteyn, Henry C.; Siemens, Mark E.; Anderson, Erik H.; Hellwig, Olav; Dobisz, Elizabeth; Gurney, Bruce; Yang, Ronggui; Nelson, Keith Adam (American Physical Society, 2012-05)
    In this work, we generate and probe the shortest wavelength surface acoustic waves to date, at 45 nm, by diffracting coherent extreme ultraviolet beams from a suboptical phononic crystal. The short acoustic wavelengths ...
  • Demirbas, Umit; Sennaroglu, Alphan; Kaertner, Franz X.; Fujimoto, James G. (Optical Society of America, 2008-12)
    We describe the generation of enhanced pulse energies using a multipass-cavity (MPC) Cr[superscript3] +:LiCAF laser, pumped by inexpensive, single spatial mode laser diodes. A semiconductor saturable absorber was used for ...
  • Siddiqui, Aleem M.; Kaertner, Franz X.; Cirmi, G.; Brida, D.; Cerullo, G. (Institute of Electrical and Electronics Engineers, 2009-06)
    In this work we report on a two-stage approach for the generation of few-optical-cycle pulses at 800 nm; (i) a FF- pumped near-IR OPA produces pulses at 1.3 mum, which are used to generate a WLC with smooth spectral amplitude ...
  • Minnihan, Ellen Catherine; Ando, Nozomi; Brignole, Edward J.; Olshansky, Lisa; Chittuluru, Johnathan; Asturias, Francisco J.; Drennan, Catherine L.; Nocera, Daniel G.; Stubbe, JoAnne (National Academy of Sciences (U.S.), 2013-02)
    Ribonucleotide reductase (RNR) catalyzes the conversion of nucleoside diphosphates to deoxynucleoside diphosphates (dNDPs). The Escherichia coli class Ia RNR uses a mechanism of radical propagation by which a cysteine in ...
  • Chen, Zhao; Zhou, Xibin; Werley, Christopher Alan; Nelson, Keith Adam (American Institute of Physics, 2011-08)
    We demonstrate generation of high-power, multicycle, and frequency-tunable terahertz pulses with microjoule energies by tilting the intensity front of a quasi-sinusoidal intensity-modulated optical waveform. The spatiotemporally ...
  • Hsu, Wei-Chun; Hsieh, Zhi-Ming; Lai, Ying-Yao; Lai, Chien-Jen; Chen, Wei-Ting; Peng, Lung-Han; Pan, Ci-Ling; Kung, A. H. (Institute of Electrical and Electronics Engineers, 2009-10)
    Up to seven laser harmonics covering more than two octaves in frequency have been generated efficiently in a single PPLT crystal, permitting the synthesis of 1.5 femtosecond pulses in a stable and compact setting.
  • Demirbas, Umit; Hong, Kyung-Han; Fujimoto, James G.; Sennaroglu, Alphan; Kärtner, Franz X. (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    We report a low-cost, cavity dumped Cr:LiSAF laser, generating 135-fs pulses at 825 nm, with 105 nJ pulse energies and ∼0.78 MW of peak power at 10 kHz, using only 600 mW of pump power.
  • Aaronson, Scott; Bouland, Adam Michael (American Physical Society, 2014-06)
    In 1994, Reck et al. showed how to realize any unitary transformation on a single photon using a product of beam splitters and phase shifters. Here we show that any single beam splitter that nontrivially mixes two modes ...
  • Menze, Bjoern Holger; Leemput, Koen Van; Honkela, Antti; Konukoglu, Ender; Weber, Marc-Andre; Ayache, Nicholas; Golland, Polina (Springer Berlin / Heidelberg, 2011-06)
    Extensive imaging is routinely used in brain tumor patients to monitor the state of the disease and to evaluate therapeutic options. A large number of multi-modal and multi-temporal image volumes is acquired in standard ...
  • Sabuncu, Mert R.; Yeo, Boon Thye Thomas; Fischl, Bruce; Van Leemput, Koen; Golland, Polina (Institute of Electrical and Electronics Engineers, 2010-09)
    We propose a nonparametric, probabilistic model for the automatic segmentation of medical images, given a training set of images and corresponding label maps. The resulting inference algorithms rely on pairwise registrations ...
  • Colding, Tobias; Minicozzi, William (Princeton University Press, 2012-03)
    It has long been conjectured that starting at a generic smooth closed embedded surface in R[superscript 3], the mean curvature flow remains smooth until it arrives at a singularity in a neighborhood of which the flow looks ...
  • Wu, Jianlan; Silbey, Robert J.; Cao, Jianshu (American Physical Society, 2013-05)
    An asymptotic scaling theory is presented using the conceptual basis of trapping-free subspace (i.e., orthogonal subspace) to establish the generic mechanism of optimal efficiency of excitation energy transfer in ...
  • Schechter, Paul L.; Levinson, Rebecca Sobel (Society of Photo-Optical Instrumentation Engineers (SPIE), 2012-09)
    Q1: Why deploy N wavefront sensors on a three mirror anastigmat (TMA) and not N + 1? Q2: Why measure M Zernike coefficients and not M + 1? Q3: Why control L rigid body degrees of freedom (total) on the secondary and tertiary ...
  • Schechter, Paul L.; Levinson, Rebecca Sobel (University of Chicago Press, 2011-07)
    Axially symmetric telescopes produce well-known Seidel off-axis third-order aberration patterns: coma, astigmatism, curvature of field, and distortion. When axial symmetry is broken by the small misalignments of optical ...
  • Steine, Eveline J.; Ehrich, Mathias; Bell, George W.; Raj, Arjun; Reddy, Seshamma; van Oudenaarden, Alexander; Jaenisch, Rudolf; Linhart, Heinz G. (American Society for Clinical Investigation, 2011-05)
    Human cancer cells frequently have regions of their DNA hypermethylated, which results in transcriptional silencing of affected genes and promotion of tumor formation. However, it is still unknown whether cancer-associated ...
  • Durrett, Greg; Medard, Muriel; O'Reilly, Una-May (Springer Science + Business Media B.V., 2010-04)
    We present an algorithmic approach to solving the problem of chromatic entropy, a combinatorial optimization problem related to graph coloring. This problem is a component in algorithms for optimizing data compression when ...
  • Lamppa, John W.; Ackerman, Margaret E.; Lai, Jennifer I.; Scanlon, Thomas C.; Griswold, Karl E. (Public Library of Science, 2011-02)
    Alginate lyase enzymes represent prospective biotherapeutic agents for treating bacterial infections, particularly in the cystic fibrosis airway. To effectively deimmunize one therapeutic candidate while maintaining high ...
  • Lee, Ji Hye; Guan, Zhuo; Akbergenova, Yulia; Littleton, J. Troy (Society for Neuroscience, 2013-01)
    Synaptic vesicle fusion mediates communication between neurons and is triggered by rapid influx of Ca[superscript 2+]. The Ca[superscript 2+]-triggering step for fusion is regulated by the synaptic vesicle transmembrane ...
  • Verstrepen, Kevin J.; Fink, Gerald R. (Annual Reviews, 2009-07)
    Eukaryotic microorganisms have evolved ingenious mechanisms to generate variability at their cell surface, permitting differential adherence, rapid adaptation to changing environments, and evasion of immune surveillance. ...
  • Børud, Bente; Viburiene, Raimonda; Paulsen, Berit Smestad; Egge-Jacobsen, Wolfgang; Koomey, Michael; Hartley, Meredith D.; Imperiali, Barbara (Proceedings of the National Academy of Sciences (PNAS), 2011-05)
    Although protein glycosylation systems are becoming widely recognized in bacteria, little is known about the mechanisms and evolutionary forces shaping glycan composition. Species within the genus Neisseria display remarkable ...
Open Access