Intercalation of Pb at graphene/Ru(0001) interfaces has been dynamically observed using in situ low energy electron microscopy and photoemission electron microscopy. A comparative study of Pb intercalation on the submonolayer and complete monolayer graphene surfaces suggest that the Pb intercalation happens through the open edges of graphene islands, starting at around 150 °C. Spatially-resolve...

The NA50 Collaboration has recently observed a strong suppression of J/Ψ production in Pb–Pb collisions at 158 Gev/n. We show that this recent observation finds a quantitative explanation in a model which relates the suppression mechanism to the local energy density, whose value is higher in Pb–Pb collisions than in any other system studied previously. The sensitivity of the phenomenon to small...

This Article is brought to you for free and open access by the Electrical & Computer Engineering at ODU Digital Commons. It has been accepted for inclusion in Electrical & Computer Engineering Faculty Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Tang, D.; Elsayed-Ali, H. E.; Wendelken, J.; an...

We use scanning tunneling spectroscopy to explore the quantum well states in the Pb islands grown on a Cu(111) surface. Our observation demonstrates that the empty quantum well states, whose energy levels lie beyond 1.2 eV above the Fermi level, are significantly affected by the image potential. As the quantum number increases, the energy separation between adjacent states is shrinking rather t...

We combine parameter-free calculations of the transmission and reflection matrices for clean and dirty interfaces with a scattering-theory formulation of Andreev reflection (AR) generalized to spin-polarized systems in order to critically evaluate the use of an extended Blonder-Tinkham-Klapwijk (BTK) model to extract values of the spin polarization for ferromagnetic metals from measurements of ...

The local environment of the Pb atom in Pb(x)Sn(1-x)S solid solution was studied by EXAFS technique. The shortest Pb-S bond length in orthorhombic samples was found to be by approximately 0.2 A shorter than in cubic PbS. This indicates that the 6s2 lone pair of Pb is stereochemically active in the SnS host. Strong correlations found in the distribution of metal atoms in the second shell show th...

Altex 31, 3/14 367 Huh, D., Matthews, B. D., Mammoto, A. et al. (2010). Reconstituting organ-level lung functions on a chip. Science 328, 1662-1668. http://dx.doi.org/10.1126/science.1188302 Huh, D., Leslie, D. C., Matthews, B. D. et al. (2012). A human disease model of drug toxicity – induced pulmonary edema in a lung-on-a-chip microdevice. Sci Trans Med 4, 159ra147. http://dx.doi.org/10.1126/...