Now showing items 366-385 of 1364

    • Growth and Collapse of a Bose-Einstein Condensate with Attractive Interactions 

      Sackett, C.A.; Stoof, H.T.C.; Hulet, R.G. (1998)
      We consider the dynamics of a quantum degenerate trapped gas of 7Li atoms. Because the atoms have a negative s-wave scattering length, a Bose condensate of 7Li becomes mechanically unstable when the number of condensate ...
    • The Harang reversal and the interchange stability of the magnetotail 

      Ohtani, Shinichi; Gkioulidou, Matina; Wang, Chih-Ping; Wolf, Richard A. (2016)
      The present study addresses steady convection in the plasma sheet in terms of the interchange stability with special attention to the Harang reversal. The closure of the tail current with a field-aligned current (FAC) ...
    • Hard X-ray quiescent emission in magnetars via resonant Compton upscattering 

      Baring, M.G.; Wadiasingh, Z.; Gonthier, P.L.; Harding, A.K. (2017)
      Non-thermal quiescent X-ray emission extending between 10 keV and around 150 keV has been seen in about 10 magnetars by RXTE, INTEGRAL, Suzaku, NuSTAR and Fermi-GBM. For inner magnetospheric models of such hard X-ray ...
    • Harmonic decomposition of three-particle azimuthal correlations at energies available at the BNL Relativistic Heavy Ion Collider 

      STAR Collaboration; Brandenburg, J.D.; Butterworth, J.; Eppley, G.; Geurts, F.; Roberts, J.B.; Tlusty, D. (2018)
      We present measurements of three-particle correlations for various harmonics in Au+Au collisions at energies ranging from √sNN=7.7 to 200 GeV using the STAR detector. The quantity ⟨cos(mϕ1+nϕ2−(m+n)ϕ3)⟩, with ϕ being the ...
    • Hartree–Fock symmetry breaking around conical intersections 

      Jake, Lena C.; Henderson, Thomas M.; Scuseria, Gustavo E. (2018)
      We study the behavior of Hartree-Fock (HF) solutions in the vicinity of conical intersections. These are here understood as regions of a molecular potential energy surface characterized by degenerate or nearly degenerate ...
    • Heavy fermion quantum criticality at dilute carrier limit in CeNi2−δ(As1−xPx)2 

      Chen, Jian; Wang, Zhen; Li, Yupeng; Feng, Chunmu; Dai, Jianhui; Xu, Zhu’an; Si, Qimiao (2019)
      We study the quantum phase transitions in the nickel pnctides, CeNi2−δ(As1−xPx)2 (δ ≈ 0.07–0.22) polycrystalline samples. This series displays the distinct heavy fermion behavior in the rarely studied parameter regime of ...
    • Heavy-fermion quantum criticality and destruction of the Kondo effect in a nickelᅠoxypnictide 

      Luo, Yongkang; Pourovskii, Leonid; Rowley, S.E.; Li, Yuke; Feng, Chunmu; Georges, Antoine; Dai, Jianhui; Cao, Guanghan; Xu, Zhuメan; Si, Qimiao; Ong, N.P. (2014)
      A quantum critical point arises at a continuous transformation between distinct phases of matter at zero temperature. Studies in antiferromagnetic heavy-fermion materials have revealed that quantum criticality has several ...
    • Helical Quantum Edge Gears in 2D Topological Insulators 

      Chou, Yang-Zhi; Levchenko, Alex; Foster, Matthew S. (2015)
      We show that two-terminal transport can measure the Luttinger liquid (LL) parameter K, in helical LLs at the edges of two-dimensional topological insulators (TIs) with Rashba spin-orbit coupling. We consider a Coulomb drag ...
    • Hierarchy in gene expression is predictive of risk, progression, and outcome in adult acute myeloid leukemia 

      Tripathi, Shubham; Deem, Michael W. (2015)
      Cancer progresses with a change in the structure of the gene network in normal cells. We define a measure of organizational hierarchy in gene networks of affected cells in adult acute myeloid leukemia (AML) patients. With ...
    • Hierarchy of gene expression data is predictive of future breast cancer outcome 

      Chen, Man; Deem, Michael W. (2013)
      We calculate measures of hierarchy in gene and tissue networks of breast cancer patients. We find that the likelihood of metastasis in the future is correlated with increased values of network hierarchy for expression ...
    • High Chromaticity Aluminum Plasmonic Pixels for Active Liquid Crystal Displays 

      Olson, Jana; Manjavacas, Alejandro; Basu, Tiyash; Huang, Da; Schlather, Andrea E.; Zheng, Bob; Halas, Naomi; Nordlander, Peter; Link, Stephan (2016)
      Chromatic devices such as flat panel displays could, in principle, be substantially improved by incorporating aluminum plasmonic nanostructures instead of conventional chromophores that are susceptible to photobleaching. ...
    • High e+/e− Ratio Dense Pair Creation with 1021W.cm−2 Laser Irradiating Solid Targets 

      Liang, E.; Clarke, T.; Henderson, A.; Fu, W.; Lo, W.; Taylor, D.; Chaguine, P.; Zhou, S.; Hua, Y.; Cen, X.; Wang, X.; Kao, J.; Hasson, H.; Dyer, G.; Serratto, K.; Riley, N.; Donovan, M.; Ditmire, T. (2015)
      We report results of new pair creation experiments using ~100 Joule pulses of the Texas Petawatt Laser to irradiate solid gold and platinum targets, with intensities up to ~1.9 × 10(21) W.cm(-2) and pulse durations as short ...
    • High hardness in the biocompatible intermetallic compound β-Ti3Au 

      Svanidze, Eteri; Besara, Tiglet; Ozaydin, M. Fevsi; Tiwary, Chandra Sekhar; Wang, Jiakui K.; Radhakrishnan, Sruthi; Mani, Sendurai; Xin, Yan; Han, Ke; Liang, Hong; Siegrist, Theo; Ajayan, Pulickel M.; Morosan, E. (2016)
      The search for new hard materials is often challenging, but strongly motivated by the vast application potential such materials hold. Ti3Au exhibits high hardness values (about four times those of pure Ti and most steel ...
    • High-Ampacity Power Cables of Tightly-Packed and Aligned Carbon Nanotubes 

      Wang, Xuan; Behabtu, Natnael; Young, Colin C.; Tsentalovich, Dmitri E.; Pasquali, Matteo; Kono, Junichiro (2014)
      The current-carrying capacity (CCC), or ampacity, of highly-conductive, light, and strong carbon nanotube (CNT) fibers is characterized by measuring their failure current density (FCD) and continuous current rating (CCR) ...
    • High-contrast imaging of HD 163296 with the Keck/NIRC2 L′-band vortex coronograph 

      Guidi, G.; Ruane, G.; Williams, J.P.; Mawet, D.; Testi, L.; Zurlo, A.; Absil, O.; Bottom, M.; Choquet, E.; Christiaens, V.; Castellá, B. Femenía; Huby, E.; Isella, A.; Kastner, J.; Meshkat, T.; Reggiani, M.; Riggs, A.; Serabyn, E.; Wallack, N. (2018)
      We present observations of the nearby (D∼100 pc) Herbig star HD 163296 taken with the vortex coronograph at Keck/NIRC2 in the L′ band (3.7 μμm) to search for planetary mass companions in the ringed disc surrounding this ...
    • High-resolution Millimeter Imaging of the CI Tau Protoplanetary Disk: A Massive Ensemble of Protoplanets from 0.1 to 100 au 

      Clarke, C.J.; Tazzari, M.; Juhasz, A.; Rosotti, G.; Booth, R.; Facchini, S.; Ilee, J.D.; Johns-Krull, C.M.; Kama, M.; Meru, F.; Prato, L. (2018)
      We present high-resolution millimeter continuum imaging of the disk surrounding the young star CI Tau, a system hosting the first hot Jupiter candidate in a protoplanetary disk system. The system has extended mm emission ...
    • A high-throughput three-dimensional cell migration assay for toxicity screening with mobile device-based macroscopic image analysis 

      Timm, David M.; Chen, Jianbo; Sing, David; Gage, Jacob A.; Haisler, William L.; Neeley, Shane K.; Raphael, Robert M.; Dehghani, Mehdi; Rosenblatt, Kevin P.; Killian, T.C.; Tseng, Hubert; Souza, Glauco R. (2013)
      There is a growing demand for in vitro assays for toxicity screening in three-dimensional (3D) environments. In this study, 3D cell culture using magnetic levitation was used to create an assay in which cells were patterned ...
    • How input fluctuations reshape the dynamics of a biological switching system 

      Hu, Bo; Kessler, David A.; Rappel, Wouter-Jan; Levine, Herbert (2012)
      An important task in quantitative biology is to understand the role of stochasticity in biochemical regulation. Here, as an extension of our recent work [Phys. Rev. Lett. 107, 148101 (2011)], we study how input ...
    • How input noise limits biochemical sensing in ultrasensitive systems 

      Hu, Bo; Rappel, Wouter-Jan; Levine, Herbert (2014)
      Many biological processes are regulated by molecular devices that respond in an ultrasensitive fashion to upstream signals. An important question is whether such ultrasensitivity improves or limits its ability to read out ...
    • Hydrogen Diffusion and Stabilization in Single-Crystal VO2 Micro/Nanobeams by Direct Atomic Hydrogenation 

      Lin, Jian; Ji, Heng; Swift, Michael W.; Hardy, Will J.; Peng, Zhiwei; Fan, Xiujun; Nevidomskyy, Andriy H.; Tour, James M.; Natelson, Douglas (2014)
      We report measurements of the diffusion of atomic hydrogen in single crystalline VO2 micro/nanobeams by direct exposure to atomic hydrogen, without catalyst. The atomic hydrogen is generated by a hot filament, and the ...