Now showing items 21-40 of 121

    • Detection and Quantized Conductance of Neutral Atoms Near a Charged Carbon Nanotube 

      Ristroph, Trygve; Goodsell, Anne; Golovchenko, Jene Andrew; Hau, Lene V. (American Physical Society (APS), 2005)
      We describe a novel single atom detector that uses the high electric field surrounding a charged single-walled carbon nanotube to attract and subsequently field-ionize neutral atoms. A theoretical study of the field-ionization ...
    • Direct measurement of crystal surface stress 

      Martinez, Robert; Augustyniak, Walter; Golovchenko, Jene Andrew (American Physical Society (APS), 1990)
      We have measured surface stresses on clean Si(111) 7×7 by comparing this surface to a reference surface on which gallium atoms are adsorbed under UHV conditions. Stresses are determined by optically measuring the macroscopic ...
    • DNA Characterization with Solid-State Nanopores and Combined Carbon Nanotube across Solid-State Nanopore Sensors 

      Vlassarev, Dimitar (2013-02-08)
      A DNA molecule passing through a nanopore in a liner and sequential fashion allows for unprecedented interrogation of the polymer. Adding transverse electrodes that are comparable in size and sensitive to the DNA molecule, ...
    • DNA molecules and configurations in a solid-state nanopore microscope 

      Li, Jiali; Gershow, Marc; Stein, Derek; Brandin, Eric Richard; Golovchenko, Jene Andrew (Nature Publishing Group, 2003)
      A nanometre scale pore in a solid state membrane provides a new way to electronically probe the structure of single linear polymers, including those of biological interest in their native environments. Previous work with ...
    • Doping by Metal-Mediated Epitaxy: Growth of As Delta-Doped Si through a Pb Monolayer 

      Dubon, Oscar D.; Evans, Paul G.; Chervinsky, John F.; Aziz, Michael; Spaepen, Frans; Golovchenko, Jene; Chisholm, Matthew F.; Muller, David A. (American Institute of Physics, 2001)
      In molecular-beam epitaxy a monolayer of Pb on the Si(111) surface induces single-crystal growth at temperatures well below those required for similar growth on a bare surface. We demonstrate that the suppression of dopant ...
    • Doppler Broadening of In-Flight Positron Annihilation Radiation due to Electron Momentum 

      Hunt, A. W.; Cassidy, D. B.; Sterne, P. A.; Cowan, T. E.; Howell, R. H.; Lynn, K. G.; Golovchenko, Jene Andrew (American Physical Society (APS), 2001)
      We report the first observation of electron momentum contributions to the Doppler broadening of radiation produced by in-flight two-photon annihilation in solids. In these experiments an approximately 2.5 MeV positron beam ...
    • Dual-wavelength laser annealing 

      Auston, D. H.; Golovchenko, Jene Andrew; Venkatesan, T. N. C. (AIP Publishing, 1979)
      A simple and efficient method of annealing ion‐implantation damage in semiconductors is demonstrated which utilizes a relatively weak optical pulse in the visible to initiate surface melting in combination with a more ...
    • Dynamics of Ion Beam Stimulated Surface Mass Transport to Nanopores 

      Hoogerheide, David Paul; Golovchenko, Jene Andrew (Cambridge University Press (CUP), 2007)
      We explore the ion beam-induced dynamics of the formation of large features at the edges of nanopores in freestanding silicon nitride membranes. The shape and size of these ìnanovolcanoesî, together with the rate at which ...
    • Dynamics of Q-switched laser annealing 

      Auston, D. H.; Golovchenko, Jene Andrew; Simons, A. L.; Surko, C. M.; Venkatesan, T. N. C. (AIP Publishing, 1979)
      Using time‐resolved optical‐reflectivity measurements, the duration of the thin liquid layer accompanying Q‐switched laser annealing in Si, Ge, and GaAs has been determined. The duration of this melted layer has been studied ...
    • Effect of substrate miscut on low-temperature homoepitaxial growth on Si(111) mediated by overlayers of Au: Evidence of step flow 

      Wilk, G. D.; Chervinsky, John; Spaepen, Frans; Golovchenko, Jene Andrew (AIP Publishing, 1997)
      Observations of homoepitaxialgrowth on low-angle miscut (∼0.1°) Si(111) substrates through an overlayer of Au, together with earlier results on highly miscut Si(111) surfaces, indicate that growth in this system occurs by ...
    • Electrical pulse fabrication of graphene nanopores in electrolyte solution 

      Kuan, Aaron Tzeyang; Lu, Bo; Xie, Ping; Szalay, Tamas; Golovchenko, Jene Andrew (AIP Publishing, 2015)
      Nanopores in graphenemembranes can potentially offer unprecedented spatial resolution for single molecule sensing, but their fabrication has thus far been difficult, poorly scalable, and prone to contamination. We demonstrate ...
    • Electron Interferometry at Crystal Surfaces 

      Becker, R. S.; Golovchenko, Jene Andrew; Swartzentruber, B. S. (American Physical Society (APS), 1985)
      Electron standing waves formed in the vacuum gap between the probe and the sample of the tunneling microscope are observed. The sensitivity of the standing-wave positions and frequencies to the surface potential are ...
    • Embedding a Carbon Nanotube across the Diameter of a Solid State Nanopore 

      Sadki, El-Hadi S.; Garaj, Slaven; Vlassarev, Dimitar Mihaylov; Golovchenko, Jene A.; Branton, Daniel (American Vacuum Society, 2011)
      A fabrication method for positioning and embedding a single-walled carbon nanotube (SWNT) across the diameter of a solid state nanopore is presented. Chemical vapor deposition (CVD) is used to grow SWNTs over arrays of ...
    • Energy-Resolved Positron Annihilation in Flight in Solid Targets 

      Weber, M. H.; Hunt, A. W.; Golovchenko, Jene Andrew; Lynn, K. G. (American Physical Society (APS), 1999)
      Energy-resolved two-quantum annihilation in flight of positrons with energies ranging from 10 to 71.6 keV was observed. An energy-dispersive two-detector coincidence system was used to observe the sum and difference energies ...
    • Escape of DNA from a Weakly Biased Thin Nanopore: Experimental Evidence for a Universal Diffusive Behavior 

      Hoogerheide, David Paul; Albertorio, Fernando; Golovchenko, Jene Andrew (American Physical Society (APS), 2013)
      We report experimental escape time distributions of double-stranded DNA molecules initially threaded halfway through a thin solid-state nanopore. We find a universal behavior of the escape time distributions consistent ...
    • Extreme Liquid Superheating and Homogeneous Bubble Nucleation in a Solid State Nanopore 

      Levine, Edlyn Victoria (2016-05-05)
      This thesis explains how extreme superheating and single bubble nucleation can be achieved in an electrolytic solution within a solid state nanopore. A highly focused ionic current, induced to flow through the pore by ...
    • Feedback-controlled ion beam sculpting apparatus 

      Stein, Derek M.; McMullan, Ciaran J.; Li, Jiali; Golovchenko, Jene Andrew (AIP Publishing, 2004)
      We report the design of an “ion sculpting” instrument that enables the controlled fabrication of nanometer-sized structures in solid-state materials. The instrument employs a beam of kilo-electron-volt argon ions that ...
    • A few analytical solutions to the linear Boltzmann transport equation with an application to channeling 

      Golovchenko, Jene Andrew (American Physical Society (APS), 1976)
      Some exact solutions to the linear Boltzmann transport equation in a one-dimensional space are presented. These results may be applied to demonstrate the trend towards statistical equilibrium of fast channeled particles ...
    • Field Ionization of Cold Atoms Near the Wall of a Single Carbon Nanotube 

      Goodsell, Anne Laurel; Ristroph, Trygve; Golovchenko, Jene A.; Hau, Lene Vestergaard (American Physical Society, 2010)
      We observe the capture and field ionization of individual atoms near the side wall of a single suspended nanotube. Extremely large cross sections for ionization from an atomic beam are observed at modest voltages due to ...
    • Giant Vibrations of Impurity Atoms on a Crystal Surface 

      Martinez, Robert E.; Fontes, E.; Golovchenko, Jene Andrew; Patel, J. R. (American Physical Society (APS), 1992)
      We have measured extremely large anisotropic thermal vibrations of gallium adatoms on a Si(111) surface using x-ray standing waves. At 830 K the rms amplitude normal to the surface is 0.47±0.02 Å while the parallel amplitude ...