Now showing items 861-880 of 2182

    • Large-scale current systems and ground magnetic disturbance during deep substorm injections 

      Yang, J.; Toffoletto, F.R.; Wolf, R.A.; Sazykin, S.; Ontiveros, P.A.; Weygand, J.M. (2012)
      We present a detailed analysis of the large-scale current systems and their effects on the ground magnetic field disturbance for an idealized substorm event simulated with the equilibrium version of the Rice Convection ...
    • Large-scale tectonic cycles in Europe revealed by distinct Pb isotope provinces 

      Blichert-Toft, Janne; Delile, Hugo; Lee, Cin-Ty; Stos-Gale, Zofia; Billstrӧm, Kjell; Andersen, Tom; Hannu, Huhma; Albarède, Francis (2016)
      Lead isotopic systematics of U-poor minerals, such as sulfides and feldspars, can provide unique insights into the origin and evolution of continents because these minerals “freeze in” the Pb isotopic composition of the ...
    • Laser Pulse Duration Is Critical For the Generation of Plasmonic Nanobubbles 

      Lukianova-Hleb, Ekaterina Y.; Volkov, Alexey N.; Lapotko, Dmitri O. (2014)
      Plasmonic nanobubbles (PNBs) are transient vapor nanobubbles generated in liquid around laser-overheated plasmonic nanoparticles. Unlike plasmonic nanoparticles, PNBs’ properties are still largely unknown due to their ...
    • Laser-cooling limits and single-ion spectroscopy 

      Wineland, D.J.; Itano, Wayne M.; Bergquist, J.C.; Hulet, Randall G. (1987)
      The limitations to the achievement of low kinetic energies for laser cooling of single ions confined in electromagnetic traps are discussed. Sideband cooling of an ion in an rf (Paul) trap is reexamined including the effects ...
    • Laser-free slow atom source 

      Ghaffari, B.; Gerton, J.M.; McAlexander, W.I.; Strecker, K.E.; Homan, D.M.; Hulet, R.G. (1999)
      A slow atom source, which does not rely on lasers, has been developed and characterized. The device, acting as an atomic low-pass velocity filter, utilizes permanent magnets to passively select the slow atoms present in a ...
    • Laser-induced porous graphene films from commercial polymers 

      Lin, Jian; Peng, Zhiwei; Liu, Yuanyue; Ruiz-Zepeda, Francisco; Ye, Ruquan; Samuel, Errol L.G.; Yacaman, Miguel Jose; Yakobson, Boris I.; Tour, James M. (2014)
      The cost effective synthesis and patterning of carbon nanomaterials is a challenge in electronic and energy storage devices. Here we report a one-step, scalable approach for producing and patterning porous graphene films ...
    • Late Holocene climate change recorded in proxy records from a Bransfield Basin sediment core, Antarctic Peninsula 

      Barnard, Alex; Wellner, Julia S.; Anderson, John B. (2014)
      The glacimarine environment of the Antarctic Peninsula region is one of the fastest warming places on Earth today, but details of changes in the recent past remain unknown. Large distances and widespread variability separate ...
    • Latitudinal variation in soil biota: testing the biotic interaction hypothesis with an invasive plant and a native congener 

      Lu, Xinmin; He, Minyan; Ding, Jianqing; Siemann, Evan (2018)
      Soil biota community structure can change with latitude, but the effects of changes on native plants, invasive plants, and their herbivores remain unclear. Here, we examined latitudinal variation in the soil biota community ...
    • Learning physics of living systems from Dictyostelium 

      Levine, Herbert (2014)
      Unlike a new generation of scientists that are being trained directly to work on the physics of living systems, most of us more senior members of the community had to find our way from other research areas. We all have our ...
    • Level structures on Abelian varieties, Kodaira dimensions, and Lang's conjecture 

      Abramovich, Dan; Várilly-Alvarado, Anthony (2018)
      Assuming Lang's conjecture, we prove that for a prime p, number field K, and positive integer g, there is an integer r such that no principally polarized abelian variety A/K has full level-pr structure. To this end, we use ...
    • Leveraging synthetic biology for tissue engineering applications 

      Lee, Esther J.; Tabor, Jeffrey J.; Mikos, Antonios G. (2014)
      Restoration of damaged tissues and organs requires precise control of cellular processes at the molecular level. Synthetic biology offers genetic tools that can be used to program the molecular biology of the cell, thereby ...
    • Lg attenuation in northeast China using NECESSArray data 

      Ranasinghe, Nishath R.; Gallegos, Andrea C.; Trujillo, Andrea R.; Blanchette, Alexander R.; Sandvol, Eric A.; Ni, James; Hearn, Thomas M.; Tang, Youcai; Grand, Stephen P.; Niu, Fenglin; Chen, Yongshun J.; Ning, Jieyuan; Kawakatsu, Hitoshi; Tanaka, Satoru; Obayashi, Masayuki (2015)
      The 127 station NorthEast China Extended SeiSmic Array (NECESSArray) provides large quantities of high quality seismic data in northeast China that allow us to resolve lateral variations of Lg Q or crustal attenuation at ...
    • Lie algebraic similarity transformed Hamiltonians for lattice model systems 

      Wahlen-Strothman, Jacob M.; Jiménez-Hoyos, Carlos A.; Henderson, Thomas M.; Scuseria, Gustavo E. (2015)
      We present a class of Lie algebraic similarity transformations generated by exponentials of two-body on-site Hermitian operators whose Hausdorff series can be summed exactly without truncation. The correlators are defined ...
    • Lifetimes of ultra-long-range strontium Rydberg molecules 

      Camargo, F.; Whalen, J.D.; Ding, R.; Sadeghpour, H.R.; Yoshida, S.; Burgdörfer, J.; Dunning, F.B.; Killian, T.C. (2016)
      The lifetimes of the lower-lying vibrational states of ultra-long-range strontium Rydberg molecules comprising one ground-state 5s2 1S0 atom and one Rydberg atom in the 5s38s3S1 state are reported. The molecules are created ...
    • Lifetimes of ultralong-range Strontium Rydberg molecules in a dense BEC 

      Camargo, F.; Whalen, J.D.; Ding, R.; Killian, T.C.; Dunning, F.B.; Pérez-Ríos, J.; Yoshida, S.; Burgdörfer, J. (2017)
      The lifetimes and decay channels of ultralong-range strontium Rydberg molecules that contain tens to hundreds of ground-state atoms within the electron orbit are examined by monitoring the time evolution of the Rydberg ...
    • Lifetimes of ultralong-range strontium Rydberg molecules in a dense Bose-Einstein condensate 

      Whalen, J.D.; Camargo, F.; Ding, R.; Killian, T.C.; Dunning, F.B.; Pérez-Ríos, J.; Yoshida, S.; Burgdörfer, J. (2017)
      The lifetimes and decay channels of ultralong-range Rydberg molecules created in a dense Bose-Einstein condensate are examined by monitoring the time evolution of the Rydberg population using field ionization. Studies of ...
    • Lifetimes of ultralong-range strontium Rydberg molecules in cold dense gases 

      Whalen, J.D.; Camargo, F.; Ding, R.; Killian, T.C.; Dunning, F.B.; Pérez-Ríos, J.; Yoshida, S.; Burgdörfer, J. (2017)
      The lifetimes and decay channels of ultralong-range Rydberg molecules created in a dense Bose-Einstein condensate (BEC) are examined by monitoring the time evolution of the Rydberg population using field ionization. The ...
    • Ligand-Dependent Colloidal Stability Controls the Growth of Aluminum Nanocrystals 

      Clark, Benjamin D.; DeSantis, Christopher J.; Wu, Gang; Renard, David; McClain, Michael J.; Bursi, Luca; Tsai, Ah-Lim; Nordlander, Peter; Halas, Naomi J. (2019)
      The precise size- and shape-controlled synthesis of monodisperse Al nanocrystals remains an open challenge, limiting their utility for numerous applications that would take advantage of their size and shape-dependent optical ...