Index Catalog // ScholarsArchive@OSU

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:: . Sharf,1 N. L. Rupesinghe,2 K. B. K. Teo,2 S. Inampudi,3 V. A. Podolskiy,3 E. D. Minot,1 and Yun-Shik

Active metamaterials: sign of refractive index and gain-assisted dispersion management

Creator:: Govyadinov, Alexander A., Podolskiy, Viktor A., and Noginov, M.
Abstract:: We derive an approach to determine the causal direction of wavevectors of modes in optical metamaterials, which, in turn, determines signs of refractive index and impedance as a function of real and imaginary parts of dielectric permittivity and magnetic permeability. We use the developed technique to demonstrate that the interplay...
Resource Type:: Article
Full Text:: . 18M. A. Noginov, V. A. Podolskiy, G. Zhu, M. Mayy, M. Bahoura, J. A. Adegoke, B. A. Ritzo, and K

Optimizing the superlens: manipulating geometry to enhance the resolution

Creator:: Podolskiy, Viktor A., Kuhta, Nicholas A., and Milton, Graeme W.
Abstract:: We analyze the performance of a planar lens based on realistic negative index material in a generalized geometry. We demonstrate that the conventional superlens design (where the lens is centered between the object and the image) is not optimal from the resolution point of view, develop an analytical expression for...
Resource Type:: Article
Full Text:: �. 4A. Grbic and G. V. Eleftheriades, Phys. Rev. Lett. 92, 117403 �2004�. 5V. A. Podolskiy and E. E

Nonlocal effects in effective-medium response of nanolayered metamaterials

Creator:: Elser, Justin, Podolskiy, Viktor A., Salakhutdinov, Ildar, and Avrutsky, Ivan
Abstract:: The authors analyze electromagnetic modes in multilayered nanocomposites and demonstrate that the response of a majority of realistic layered structures is strongly affected by the nonlocal effects originating from strong field oscillations across the system, and is not described by conventional effective-medium theories. They develop the analytical description of the...
Resource Type:: Article
Full Text:: �; R. Wangberg, J. Elser, E. E. Narimanov, and V. A. Podolskiy, J. Opt. Soc. Am. B 23, 498 �2006

Nanowire metamaterials with extreme optical anisotropy

Creator:: Elser, Justin, Wangberg, Robyn, Podolskiy, Viktor A., and Narimanov, Evgenii E.
Abstract:: The authors study perspectives of nanowire metamaterials for negative-refraction waveguides, high-performance polarizers, and polarization-sensitive biosensors. They demonstrate that the behavior of these composites is strongly influenced by the concentration, distribution, and geometry of the nanowires, derive an analytical description of electromagnetism in anisotropic nanowire-based metamaterials, and explore the limitations of...
Resource Type:: Article
Full Text:: , IEEE Trans. Microwave Theory Tech. 52, 199 �2004�. 6A. A. Govyadinov and V. A. Podolskiy, Phys. Rev. B

Midinfrared semiconductor optical metamaterials

Creator:: Hoffman, Anthony J., Sridhar, Aishwarya, Braun, Phillip X., Alekseyev, Leonid, Howard, Scott S., Franz, Kale J., Cheng, Liwei, Choa, Fow-Sen, Sivco, Deborah L, Podolskiy, Viktor A., Narimanov, Evgenii E., and Gmachl, Claire
Abstract:: We report on a novel class of semiconductor metamaterials that employ a strongly anisotropic dielectric function to achieve negative refraction in the midinfrared region of the spectrum, ~8.5–13 μm. We present two types of metamaterials, layered highly doped/undoped heterostructures and quantum well superlattices that are highly anisotropic. Contrary to other...
Resource Type:: Article
Full Text:: . Wasserman, V. A. Podolskiy, E. E. Narimanov, D. L. Sivco, and C. Gmachl, Nature Mater. 6, 946 !2007". 17I

Red electroluminescence from ZnGaS:Mn thin films

Creator:: Dimitrova, V., Draeseke, A., Tate, J., Yokoyama, T., Clark, B. L., Keszler, Douglas A., and Tate, Janet
Abstract:: We demonstrate color shifting from the yellow to the red in the electroluminescence from (ZnGa)S:Mn films. We observe threshold voltages down to about 35 V, extremely low for such devices. We discuss the materials characteristics of the phosphor films, and the potential for improvement of the luminous intensity of the...
Resource Type:: Article
Full Text:: 18 OCTOBER 1999 Red electroluminescence from ZnGaS:Mn thin films V. Dimitrova,a) A. Draeseke, and J

Using fundamental measure theory to treat the correlation function of the inhomogeneous hard-sphere fluid

Creator:: Schulte, Jeff B., Kreitzberg, Patrick A., Haglund, Chris V., and Roundy, David
Abstract:: We investigate the value of the correlation function of an inhomogeneous hard-sphere fluid at contact. This quantity plays a critical role in statistical associating fluid theory, which is the basis of a number of recently developed classical density functionals. We define two averaged values for the correlation function at contact...
Resource Type:: Article
Full Text:: , Patrick A. Kreitzberg, Chris V. Haglund, and David Roundy Department of Physics, Oregon State University

Measurement of K⁺ production in charged-current ν[subscript]μ interactions

Creator:: Marshall, C. M., Aliaga, L., Altinok, O., Bellantoni, L., Bercellie, A., Betancourt, M., Bodek, A., Bravar, A., Budd, H., Cai, T., Carneiro, M. F., Chvojka, J., da Motta, H., Devan, J., Dytman, S. A., Díaz, G. A., Eberly, B., Endress, E., Felix, J., Fields, L., Filkins, A., Fine, R., Gago, A. M., Galindo, R., Gallagher, H., Ghosh, A., Golan, T., Gran, R., Griswold, S., Harris, D. A., Higuera, A., Hurtado, K., Kiveni, M., Kleykamp, J., Kordosky, M., Le, T., Maher, E., Majoros, I., Manly, S., Mann, W. A., Martinez Caicedo, D. A., McFarland, K. S., McGivern, C. L., McGowan, A. M., Messerly, B., Miller, J., Mislivec, A., Morfín, J. G., Mousseau, J., Naples, D., Nelson, J. K., Norrick, A., Nuruzzaman, Osta, J., Paolone, V., Park, J., Patrick, C. E., Perdue, G. N., Rakotondravohitra, L., Ramirez, M. A., Ransome, R. D., Ray, H., Ren, L., Rimal, D., Rodrigues, P. A., Rosenberg, M., Ruterbories, D., Schellman, H., Schmitz, D. W., Shadler, L. A., Simon, C., Solano Salinas, C. J., Sánchez, S. F., Tice, B. G., Valencia, E., Walton, T., Wang, Z., Watkins, P., Wiley, K., Wolcott, J., Wospakrik, M., Zhang, D., and MINERvA Collaboration
Abstract:: Production of Kþ mesons in charged-current νμ interactions on plastic scintillator (CH) is measured using MINERvA exposed to the low-energy NuMI beam at Fermilab. Timing information is used to isolate a sample of 885 charged-current events containing a stopping Kþ which decays at rest. The differential cross section in Kþ...
Resource Type:: Article
Full Text:: . Nelson,2 A. Norrick,2 ,14,11 J. Osta,5 V. Paolone,8 J. Park,1 C. E. Patrick,10 G. N. Perdue,5,1 L

ScholarsArchive@OSU

Terahertz transmission ellipsometry of vertically aligned multi-walled carbon nanotubes

Active metamaterials: sign of refractive index and gain-assisted dispersion management

Optimizing the superlens: manipulating geometry to enhance the resolution

Nonlocal effects in effective-medium response of nanolayered metamaterials

Nanowire metamaterials with extreme optical anisotropy

Midinfrared semiconductor optical metamaterials

Red electroluminescence from ZnGaS:Mn thin films

Using fundamental measure theory to treat the correlation function of the inhomogeneous hard-sphere fluid

Measurement of K⁺ production in charged-current ν[subscript]μ interactions

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