Index Catalog // ScholarsArchive@OSU

Vortex stretching and criticality for the three-dimensional Navier-Stokes equations

Creator:: Dascaliuc, R. and Grujic, Z.
Abstract:: A mathematical evidence-in a statistically significant sense-of a geometric scenario leading to criticality of the Navier-Stokes problem is presented. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4752170]
Resource Type:: Article
Full Text:: American Institute of Physics. [http://dx.doi.org/10.1063/1.4752170] Dedicated to Professor Peter

Terahertz imaging of inhomogeneous electrodynamics in single-layer graphene embedded in dielectrics

Creator:: Paul, M. J., Tomaino, J. L., Kevek, J. W., DeBorde, T., Thompson, Z. J., Minot, E. D., and Lee, Yun-Shik
Abstract:: We investigate electron transport properties in large-area, single-layer graphene embedded in dielectric media, using free-space terahertz (THz) imaging and time-domain spectroscopy. Sandwiched between a thin polymethyl methacrylate (PMMA) layer and a Si substrate, graphene layers of different growth recipes exhibit distinctive spatial inhomogeneity of sheet conductivity. The non-contacting, non-destructive THz...
Resource Type:: Article
Full Text:: Institute of Physics. [http://dx.doi.org/10.1063/1.4749280] Graphene has a unique band structure including

Terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes

Creator:: Paul, M. J., Kuhta, N. A., Tomaino, J. L., Jameson, A. D., Maizy, L. P., Sharf, T., Rupesinghe, N. L., Teo, K. B. K., Inampudi, S., Podolskiy, V. A., Minot, E. D., and Lee, Yun-Shik
Abstract:: We demonstrate time-resolved terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes. The angle-resolved transmission measurements reveal anisotropic characteristics of the terahertz electrodynamics in multi-walled carbon nanotubes. The anisotropy is, however, unexpectedly weak: the ratio of the tube-axis conductivity to the transverse conductivity, sigma[subscript z]/sigma[subscript xy] [similar or equal to]...
Resource Type:: Article
Full Text:: nanotubes. VC 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4752158] Carbon nanotubes

Growth, optical and magnetic behavior of YMn0.35In0.65O3 thin film

Creator:: Mangalam, R. V. K., Smith, Andrew E., Boudin, S., McLoughlin, C., Subramanian, M. A., and Prellier, W.
Abstract:: The growth of YMn₀.₃₅In₀.₆₅O₃ thin films and their optical and magnetic behavior are reported. The YMn₀.₃₅In₀.₆₅O₃ thin film grows along the (0001) orientation with hexagonal structure similar to YMnO₃ on c-plane sapphire. The film shows paramagnetic behavior in the temperature range measured. The film exhibits a blue color due to...
Resource Type:: Article
Full Text:: ://dx.doi.org/10.1063/1.4732131] Naturally occurring pigments such as iron oxides (yellow to red) and lapis

Silicon nanomembrane based photonic crystal waveguide array for wavelength-tunable true-time-delay lines

Creator:: Lin, Che-Yun, Subbaraman, Harish, Hosseini, Amir, Wang, Alan X., Zhu, Liang, and Chen, Ray T.
Abstract:: We demonstrate a four-channel on-chip true-time-delay module based on a photonic crystal waveguide array. Using the photonic crystal taper to minimize the coupling loss, the delay lines with 1-3 mm long photonic crystal waveguides can operate up to a group index n(g) similar to ~23 without significant loss. The large...
Resource Type:: Article
Full Text:: Zhu et al. Citation: Appl. Phys. Lett. 101, 051101 (2012); doi: 10.1063/1.4739003 View online

Bipolar piezoelectric fatigue of Bi(Zn0.5Ti0.5)O3-(Bi0.5K0.5)TiO3-(Bi0.5Na0.5)TiO3 Pb-free ceramics

Creator:: Patterson, Eric A. and Cann, David P.
Abstract:: The piezoelectric fatigue behavior of Pb-free ceramics based on solid solutions of Bi(Zn₀.₅Ti₀.₅)O₃-(Bi₀.5K₀.₅)TiO₃-(Bi₀.₅Na₀.₅)TiO₃ was characterized at 50 kV/cm after 10⁶ bipolar cycles. Ferroelectric compositions containing 2.5% Bi(Zn₀.₅Ti₀.₅)O₃ exhibited only minor losses in maximum strain (~10%). In compositions with 5% Bi(Zn₀.₅Ti₀.₅)O₃ that exhibit large electric field-induced strains, the electromechanical strain actually...
Resource Type:: Article
Full Text:: , 042905 (2012); doi: 10.1063/1.4738770 View online: http://dx.doi.org/10.1063/1.4738770 View Table of

Effect of packing fraction on ferromagnetic resonance in NiFe2O4 nanocomposites

Creator:: Song, Han, Mulley, Sam, Coussens, Nathan, Dhagat, Pallavi, Jander, Albrecht, and Yokochi, Alexandre
Abstract:: Magnetic nanocomposites, composed of magnetic nanoparticles in an insulating matrix, can have properties not achievable in bulk, single-phase materials. This work reports on ferromagnetic resonance (FMR) measurements as a tool to investigate the internal magnetic field in nanocomposite samples of varying particle packing fractions. The ferromagnetic resonance frequency changes with...
Resource Type:: Article
Full Text:: of 0.041 T for the NiFe2O4 nanoparticles. VC 2012 American Institute of Physics. [doi:10.1063

Guided-mode-resonance-coupled plasmonic-active SiO₂ nanotubes for surface enhanced Raman spectroscopy

Creator:: Xu, Xiaobin, Hasan, Dihan, Wang, Lei, Chakravarty, Swapnajit, Chen, Ray T., Fan, D. L., and Wang, Alan X.
Abstract:: We demonstrate a surface enhanced Raman scattering (SERS) substrate by integrating plasmonic-active SiO₂ nanotubes into Si₃N₄ gratings. First, the dielectric grating that is working under guided mode resonance (GMR) provides enhanced electric field for localized surface plasmon polaritons on the surface of metallic nanoparticles. Second, we use SiO₂ nanotubes with...
Resource Type:: Article
Full Text:: nanotubes. VC 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4714710] Surface enhanced

Band-structure, optical properties, and defect physics of the photovoltaic semiconductor SnS

Creator:: Vidal, Julien, Lany, Stephan, d’Avezac, Mayeul, Zunger, Alex, Zakutayev, Andriy, Francis, Jason, and Tate, Janet
Abstract:: SnS is a potential earth-abundant photovoltaic (PV) material. Employing both theory and experiment to assess the PV relevant properties of SnS, we clarify on whether SnS has an indirect or direct band gap and what is the minority carrier effective mass as a function of the film orientation. SnS has...
Resource Type:: Article
Full Text:: Institute of Physics. [doi:10.1063/1.3675880] Earth abundancy is considered to be a major criterion for a

A classical density-functional theory for describing water interfaces

Creator:: Hughes, Jessica, Krebs, Eric J., and Roundy, David
Abstract:: We develop a classical density functional for water which combines the White Bear fundamental-measure theory (FMT) functional for the hard sphere fluid with attractive interactions based on the statistical associating fluid theory variable range (SAFT-VR). This functional reproduces the properties of water at both long and short length scales over...
Resource Type:: Article
Full Text:: /10.1063/1.4774155] I. INTRODUCTION A large fraction of interesting chemistry—including all of molecular

ScholarsArchive@OSU

Vortex stretching and criticality for the three-dimensional Navier-Stokes equations

Terahertz imaging of inhomogeneous electrodynamics in single-layer graphene embedded in dielectrics

Terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes

Growth, optical and magnetic behavior of YMn0.35In0.65O3 thin film

Silicon nanomembrane based photonic crystal waveguide array for wavelength-tunable true-time-delay lines

Bipolar piezoelectric fatigue of Bi(Zn0.5Ti0.5)O3-(Bi0.5K0.5)TiO3-(Bi0.5Na0.5)TiO3 Pb-free ceramics

Effect of packing fraction on ferromagnetic resonance in NiFe2O4 nanocomposites

Guided-mode-resonance-coupled plasmonic-active SiO₂ nanotubes for surface enhanced Raman spectroscopy

Band-structure, optical properties, and defect physics of the photovoltaic semiconductor SnS

A classical density-functional theory for describing water interfaces

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