Properties of Image-Potential-Induced Surface States of Insulators. Milton W. Cole * Department of Physics and The James Franck Institute, The University of Chicago, Chicago, Illinois 60637. Received 6 July 1970 The strongly ...
Page 1. 4418 M. H. LAMBE RT the present purpose. f8W. L. McMillan and J. M. Rowell, in Super'condgc-tivity, edited by R. D. Parks (Dekker, New York, 1969), pp. 609 and 610. PHYSICAL REVIEW B VOLUME 3, NUMBER 12 15 JUNE 1971 ...
Page 1. PHYSICAL REVIEW B VOLUME 27, NUMBER 2 15 JANUARY 1983 Substrate screening of the interaction between adsorbed atoms and molecules: Ne, Ar, Kr, Xe, and CH4 on graphite Susanna Rauber Physics Department ...
ABSTRACT Using the grand canonical Monte Carlo method, we have evaluated the adsorption isotherms of simple gases (Ar, Kr, Xe) on a variety of carbon nanotubes. The adsorption potential is a sum of anisotropic atom-C interactions,...
moreABSTRACT Using the grand canonical Monte Carlo method, we have evaluated the adsorption isotherms of simple gases (Ar, Kr, Xe) on a variety of carbon nanotubes. The adsorption potential is a sum of anisotropic atom-C interactions, dependent on the angle between the outward normal and the atom-C separation vector. For varying gas species and nanotube chirality, different commensurate phases are seen than on the surface of graphite. Comparison is made with recent experiments of Wang, et al, Science 327, 552 (2010).
... Sci. 91, 339 (1980) [INSPEC][CAS]. K. Carneiro, LP Passell, WP Thomlinson, and H. Taub, Phys. Rev. B 24, 1170 (1981) [CAS]; MW Cole and F. Toigo, Phys. Rev. B 23, 3914 (1981) [CAS]. ... Sci. 48, 649 (1975) [INSPEC][CAS]. G. Armand and...
more... Sci. 91, 339 (1980) [INSPEC][CAS]. K. Carneiro, LP Passell, WP Thomlinson, and H. Taub, Phys. Rev. B 24, 1170 (1981) [CAS]; MW Cole and F. Toigo, Phys. Rev. B 23, 3914 (1981) [CAS]. ... Sci. 48, 649 (1975) [INSPEC][CAS]. G. Armand and JR Manson, Phys. Rev. Lett. ...
The lowest-order corrections to the critical temperature, pressure, and density are given for a system characterized by a Lennard-Jones interparticle potential. Results are found in three and two dimensions using a truncated virial...
moreThe lowest-order corrections to the critical temperature, pressure, and density are given for a system characterized by a Lennard-Jones interparticle potential. Results are found in three and two dimensions using a truncated virial expansion. The results are compared with critical data for the noble gases.
Van der Waals (VDW) forces arise from quantum mechanical fluctuations of local charge densities. Whereas computing VDW interactions between two atoms requires only 2-body interactions, by definition, computing interactions between...
moreVan der Waals (VDW) forces arise from quantum mechanical fluctuations of local charge densities. Whereas computing VDW interactions between two atoms requires only 2-body interactions, by definition, computing interactions between macroscopic bodies required multi-body interactions, where the presence of a third atom affects how any two atoms interact, and a fourth atom affects the first three, and so on. Often,
... Combining (3), (7), and (8b) we have the surface-tension functional bulk 2Jm rt dx ) dx+ 23 7xa4K , (dn d 0f 9 803 I F (b) = n (- ri") n (- "r' + -r" I ) K ("r' I ) t rr d...
more... Combining (3), (7), and (8b) we have the surface-tension functional bulk 2Jm rt dx ) dx+ 23 7xa4K , (dn d 0f 9 803 I F (b) = n (- ri") n (- "r' + -r" I ) K ("r' I ) t rr d 'r-- . pot TC PADMORE AND MW COLE 0.8 F 0.6 n/no 0.4 0.2 F -4.0 -2 0 0 X (A) 2.0 4.0 FIG. ... 6B. E. Springett, Phys. Rev. ...
This article describes some collaborative activities of the authors, aimed at improving science education in elementary schools. These include curriculum enhancement, development of new apparatus (a wind tunnel), science-education web...
moreThis article describes some collaborative activities of the authors, aimed at improving science education in elementary schools. These include curriculum enhancement, development of new apparatus (a wind tunnel), science-education web site contributions and production of a film about the physics of flight. The output of these projects is intended to be generally accessible or reproducible.
... of Alpha workstations at San Diego State University. REFERENCES 1. RB Hallock, J. Low Temp. Phys. 101, 31 (1995); R. Evans and MHW Chan, Physics World 9(4), 48 (1996). 2. PA Whitlock, GV Chester, and MH Kalos, Phys. Rev. B 38, 2418...
more... of Alpha workstations at San Diego State University. REFERENCES 1. RB Hallock, J. Low Temp. Phys. 101, 31 (1995); R. Evans and MHW Chan, Physics World 9(4), 48 (1996). 2. PA Whitlock, GV Chester, and MH Kalos, Phys. Rev. B 38, 2418 (1988); S. Giorgini, J. Boronat ...
Calculations are presented of various phase transition phenomena which can occur in porous media. For â´He, density functional calculations analogous to those used to predict prewetting and wetting transitions on single surfaces exhibit...
moreCalculations are presented of various phase transition phenomena which can occur in porous media. For â´He, density functional calculations analogous to those used to predict prewetting and wetting transitions on single surfaces exhibit a rich variety of phenomena. For ³He-â´He mixtures, the Blume-Emery-Griffiths model yields intriguing phase separation, capillary condensation and prewetting behavior.
... A 72, 133 (2001); Giovanni Garberoglio, Michael M. DeKlavon and J. Karl Johnson, J. Phys. Chem. B 110, 1733 (2006) 2. Adsorption by Carbons, edited by EJ Bottani and JMD Tascon (Elsevier, Amsterdam, 2008). 3. SM Gatica, MM Calbi, RD...
more... A 72, 133 (2001); Giovanni Garberoglio, Michael M. DeKlavon and J. Karl Johnson, J. Phys. Chem. B 110, 1733 (2006) 2. Adsorption by Carbons, edited by EJ Bottani and JMD Tascon (Elsevier, Amsterdam, 2008). 3. SM Gatica, MM Calbi, RD Diehl and MW Cole' "Physics of ...
Page 1. PHYSICAL REVIEW B VOLUME 48, NUMBER 5 1 AUGUST 1993-I Phase transitions in a model porous medium Michael R. Swift Physics Department, Pennsylvania State University, University Park, Pennsylvania 16802 ...
Driven by applied voltage or Ohmic heating, bistable nanotubes filled with gas can transform between expanded and collapsed configurations and by doing so convert energy between mechanical, electrical, and thermal forms. The...
moreDriven by applied voltage or Ohmic heating, bistable nanotubes filled with gas can transform between expanded and collapsed configurations and by doing so convert energy between mechanical, electrical, and thermal forms. The electrocaloric response, a reversible change of temperature in response to applied voltage, combines the advantages of a working fluid with the lack of internal interfaces characteristic of robust solid-state thermoelectric devices. Such devices could be constructed from any conductive two-dimensional atomically thin material wrapped into an appropriate geometry.
Ortho-to-para conversion of H2 adsorbed on SWNT bundles has been investigated through neutron scattering. Information on the conversion process has been obtained by studying the time-dependence of peaks in the scattering spectra...
moreOrtho-to-para conversion of H2 adsorbed on SWNT bundles has been investigated through neutron scattering. Information on the conversion process has been obtained by studying the time-dependence of peaks in the scattering spectra corresponding to transitions between the rotational ground state and the first-excited state, as well as the between the rotational sublevels of the first excited state. These spectra show that the sublevels of the J=1 rotational state are substantially split with the m=0 sublevel pushed close to the ground state while the transition energy from the ground state to the J=1,m=+/-1 sublevels, which are still degenerate, is essentially the same as that for a free-rotor. Conversion of the molecules is well described by an exponential form with a rate constant of 1.43+/-0.3 hr-1 and complete conversion of these molecules requires 3 hrs, which is comparable to that observed for the ortho-to-para conversion of H2 adsorbed on Graphon. After completion of this process, molecules occupy either the J=1,m=0 or J=0 state. This research was supported by the DOE under Grant No. DE-FG02-01ER45912.
Zero point surface phonons: Effect on wetting. Milton W. Cole, Michael R. Swift, and Flavio Toigo Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802 Dipartimento di Fisica, via Marzolo 8, 35100...
moreZero point surface phonons: Effect on wetting. Milton W. Cole, Michael R. Swift, and Flavio Toigo Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802 Dipartimento di Fisica, via Marzolo 8, 35100 Padova, Italy. Received 13 July 1992 ...
This article discusses the behavior of submonolayer quantum films (He and H2) on graphene and newly discovered surfaces that are derived from graphene. Among these substrates are graphane (abbreviated GH), which has an H atom bonded to...
moreThis article discusses the behavior of submonolayer quantum films (He and H2) on graphene and newly discovered surfaces that are derived from graphene. Among these substrates are graphane (abbreviated GH), which has an H atom bonded to each C atom, and fluorographene (GF). For the graphite case, extensive experimental and theoretical investigations have revealed that the phase diagrams of the bose gases 4He and para-H2 are qualitatively similar, differing primarily in a higher characteristic temperature scale for H2 than for He. The phase behaviors of these films on one side of pristine graphene, or both sides of free-standing graphene, are expected to be similar to those on graphite. We point out the possibility of novel phenomena in adsorption on graphene related to the large flexibility of the graphene sheet, to the non--negligible interaction between atoms adsorbed on opposite sides of the sheet and to the perturbation effect of the adsorbed layer on the Dirac electrons. In contrast, the behaviors predicted on GF and GH surfaces are very different from those on graphite, a result of the different corrugation, i.e., the lateral variation of the potential experienced by these gases. As a result of this novel geometry and potential, distinct properties are observed. For example, the 4He film's ground-state on graphite is a two-dimensional (2D) crystal commensurate with the substrate; on GF and GH, instead, it is predicted to be an anisotropic superfluid. On GF the anisotropy is so extreme that the roton excitations are very anisotropic, as if the bosons are moving in a multiconnected space along the bonds of a honeycomb lattice. Such a novel phase has not been predicted or observed previously on any substrate. Also, in the case of 3He the film's ground-state is a fluid, thus offering the possibility of studying an anisotropic Fermi fluid with a tunable density.
Page 1. PHYSICAL REVIEW B VOLUME 38, NUMBER 2 15 JULY 1988-I Retardation and many-body efFects in multilayer-film adsorption E.Cheng and Milton W. Cole Department ofPhysics, The Pennsylvania State University ...
Page 1. VOLUME 28, NUMBER 25 PHYSICAL REVIEW LETTERS 19JUNE 1972 the theory. If the 4m =4 absorption were propor-tional to the square of the concentration, the hm =4 absorption per pair of impurities would have ...
Band structure and thermodynamic properties of He atoms near a graphite surface. William E. Carlos * and Milton W. Cole Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802. Received 12 September...
moreBand structure and thermodynamic properties of He atoms near a graphite surface. William E. Carlos * and Milton W. Cole Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802. Received 12 September 1979 ...