Search Results - "Künzner, N"

Capillary condensation in linear mesopores of different shape by Wallacher, D, Künzner, N, Kovalev, D, Knorr, N, Knorr, K

“…The hysteresis and kinetics of capillary condensation of N2 and Ar in linear mesopores, produced by etching of Si wafers, have been studied for different pore…”
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Silicon based optical devices - photonic applications of anisotropically nanostructured silicon by Diener, J., Künzner, N., Gross, E., Kovalev, D., Fujii, M.

“…Anisotropic nanostructuring of bulk silicon (Si) wafers leads to a significant in‐plane optical anisotropy of single porous silicon (PSi) layers. Additionally…”
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Resonant electronic energy transfer from excitons confined in silicon nanocrystals to oxygen molecules by Kovalev, D, Gross, E, Künzner, N, Koch, F, Timoshenko, V Yu, Fujii, M

“…We demonstrate efficient resonant energy transfer from excitons confined in silicon nanocrystals to molecular oxygen (MO). Quenching of photoluminescence (PL)…”
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Strong explosive interaction of hydrogenated porous silicon with oxygen at cryogenic temperatures by Kovalev, D, Timoshenko, V Y, Künzner, N, Gross, E, Koch, F

“…We report new types of heterogeneous hydrogen-oxygen and silicon-oxygen branched chain reactions which have been found to proceed explosively after the filling…”
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Highly explosive nanosilicon-based composite materials by Clément, D., Diener, J., Gross, E., Künzner, N., Timoshenko, V. Yu, Kovalev, D.

“…We present a highly explosive binary system based on porous silicon layers with their pores filled with solid oxidizers. The porous layers are produced by a…”
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Strong in-plane birefringence of spatially nanostructured silicon by Kovalev, D., Polisski, G., Diener, J., Heckler, H., Künzner, N., Timoshenko, V. Yu, Koch, F.

“…We report on a strong intrinsic optical anisotropy of Si induced by its dielectric patterning. As a result, an in-plane birefringence for nanostructured (110)…”
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Morphology of Porous Silicon Layers Deduced from Polarization Memory Experiments by Diener, J., Kovalev, D., Polisski, G., Künzner, N., Koch, F.

“…The morphology of porous silicon layers has been investigated by polarization resolved photoluminescence measurements in different geometrical arrangements. A…”
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Form birefringence of anisotropically nanostructured silicon by Künzner, N., Diener, J., Gross, E., Kovalev, D., Timoshenko, V. Yu, Fujii, M.

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Dichroic Bragg reflectors based on birefringent porous silicon by Diener, J., Künzner, N., Kovalev, D., Gross, E., Timoshenko, V. Yu, Polisski, G., Koch, F.

“…Multilayers of anisotropically nanostructured silicon (Si) have been fabricated and studied by polarization-resolved reflection measurements. Alternating…”
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Modern electro-optical imaging system for maritime surveillance applications by Künzner, N, Kushauer, J, Katzenbeißer, S, Wingender, K

“…Asymmetric attacks against maritime platforms often emerge suddenly, non-predictably and from civil environments. Adequate reaction to intercept possible…”
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Stimulated light emission in dense fog confined inside a porous glass matrix by Gross, E, Kovalev, D, Künzner, N, Diener, J, Koch, F, Fujii, M

“…We report on light amplification through stimulated emission in a dielectrically disordered medium. Liquid fragments confined in the solid matrix of porous…”
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Phase matching of second-harmonic generation in birefringent porous silicon by Golovan, L.A., Timoshenko, V.Yu, Fedotov, A.B., Kuznetsova, L.P., Sidorov-Biryukov, D.A., Kashkarov, P.K., Zheltikov, A.M., Kovalev, D., Künzner, N., Gross, E., Diener, J., Polisski, G., Koch, F.

“…Optical second-harmonic generation is investigated in free-standing (110) porous silicon films having strong in-plane birefringence. Based on the measured…”
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Strong low-temperature anti-Stokes photoluminescence from coupled silicon nanocrystals by Diener, J., Kovalev, D., Heckler, H., Polisski, G., Künzner, N., Koch, F., Efros, Al.L., Rosen, M.

“…We report efficient low-temperature anti-Stokes photoluminescence (upconverted photoluminescence=UPL) at resonant excitation of coupled silicon nanocrystals…”
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Fine tuning of the dichroic behavior of Bragg reflectors based on anisotropically nanostructured silicon by Diener, J., Künzner, N., Kovalev, D., Gross, E., Koch, F., Fujii, M.

“…Electro‐chemical etching of heavily doped, (110) oriented, p+ (boron) doped silicon wafers results in porous silicon (PSi) layers which exhibit a strong…”
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Efficient Photoluminescence Upconversion in Porous Si by Künzner, N., Kovalev, D., Heckler, H., Diener, J., Polisski, G., Koch, F., Efros, Al.L., Rosen, M.

“…We report on a new phenomenon specific for a system of spatially interconnected nanocrystal assemblies: efficient low temperature photoluminescence (PL)…”
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Efficient light scattering by a liquid network confined in a porous matrix by Gross, E., Kovalev, D., Künzner, N., Diener, J., Polisski, G., Koch, F., Timoshenko, V. Yu, V. Bel'kov

“…We report on a system exhibiting extremely efficient light scattering properties: a liquid network formed by capillary condensation in a porous matrix. We find…”
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Anisotropically Nanostructured Silicon as an Efficient Optical Retarder by Kovalev, D., Polisski, G., Diener, J., Heckler, H., Künzner, N., Koch, F.

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Joint Density of Electronic States in Silicon Nanocrystals by Künzer, N., Kovalev, D., Diener, J., Heckler, H., Polisski, G., Koch, F.

“…We deduce the values of the absorption cross‐section of silicon nanocrystals and the spectral behaviour of the joint density of their electronic states in a…”
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Phase matching of second-harmonic generation in birefringent porous silicon by GOLOVAN, L. A, TIMOSHENKO, V. Yu, DIENER, J, POLISSKI, G, KOCH, F, FEDOTOV, A. B, KUZNETSOVA, L. P, SIDOROV-BIRYUKOV, D. A, KASHKAROV, P. K, ZHELTIKOV, A. M, KOVALEV, D, KÜNZNER, N, GROSS, E

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Singlet oxygen formation by porous Si in solution by Fujii, Minoru, Usui, Motofumi, Hayashi, Shinji, Gross, Egon, Kovalev, Dmitri, Künzner, Nicolei, Diener, Joachim, Timoshenko, Victor Yu

“…Singlet oxygen formation by porous Si in solution has been demonstrated. It has been shown that the absorption band of 1,3‐diphenylisobenzofuran (DPBF) in…”
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