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

Coexistence of Competing Species with a Directly Transmitted Pathogen

Creator:: Bokil, V. A. and Manore, C. A.
Abstract:: In this paper we consider models of two competing species that are both affected by a pathogen which is transmitted directly. We consider both mass action as well as frequency incidence models of disease spread, and Lotka-Volterra competition. Our aim is to address the interaction between competition and disease dynamics....
Resource Type:: Technical Report
Full Text:: Pathogen V. A. Bokil∗ and C. A. Manore† Department of Mathematics Oregon State University Corvallis, OR

Parallel state-space search for a first solution with consistent linear speedups

Creator:: Kale, L. V. and Saletore, Vikram A.
Abstract:: Consider the problem of exploring a large state-space for a goal state where although many such states may exist in the state-space, finding any one state satisfying the requirements is sufficient. All the methods known until now for conducting such search in parallel using multiprocessors fail to provide consistent linear...
Resource Type:: Technical Report
Full Text:: Search for a First Solution with Consistent Linear Speedups L. V. Ka le Department of Computer

Biological control of apple mites with individual and mixed populations of Typhlodromus pyri and Metaseiulus occidentalis

Creator:: MacRae, Ian V. and Croft, Brian A.
Resource Type:: Conference Proceeding
Full Text:: Oregon. M. occidentalis is a numerical responder to spider mites adapted to warm dry climates and

Interspecific predation and cannibalism in Metaseiulus occidentalis and Typhlodromus pyri (Acari: Phytoseiidae)

Creator:: MacRae, Ian V. and Croft, Brian A.
Resource Type:: Conference Proceeding
Full Text:: V. MacRae and Brian A. Croft Dept. of Entomology Oregon State University Interspecific Predation

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

Coexistence of Competing Species with a Directly Transmitted Pathogen

Parallel state-space search for a first solution with consistent linear speedups

Biological control of apple mites with individual and mixed populations of Typhlodromus pyri and Metaseiulus occidentalis

Interspecific predation and cannibalism in Metaseiulus occidentalis and Typhlodromus pyri (Acari: Phytoseiidae)

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