986 resultados para 514
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We describe a systematic investigation by the discrete dipole approximation on the optical properties of silver (Ag) and gold (Au) nanocubes as a function of the edge length in the 20-100 nm range. Our results showed that, as the nanocube size increased, the plasmon resonance modes shifted to higher wavelengths, the contribution from scattering to the extinction increased, and the quadrupole modes became more intense in the spectra. The electric field amplitudes at the surface of the nanocubes were calculated considering 514, 633 and 785 nm as the excitation wavelengths. While Ag nanocubes displayed the highest electric field amplitudes (vertical bar E vertical bar(max)) when excited at 514 nm, the Au nanocubes displayed higher vertical bar E vertical bar(max) values than Ag, for all sizes investigated, when the excitation wavelength was either 633 or 785 nm. The variations in vertical bar E vertical bar(max) as a function of size for both Ag and Au nanocubes could be explained based on the relative position of the surface plasmon resonance peak relative to the wavelength of the incoming electromagnetic wave. Our results show that not only size and composition, but also the excitation wavelength, can play an important role over the maximum near-field amplitudes values generated at the surface of the nanocubes.
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par Léon Schlosberg
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u.a.: Carolin Médon; Carolin Marquet;
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150 Briefe zwischen Theodor W. Adorno, Gretel Adorno und Max Horkheimer; 1 Brief von Edith B. Berlebach an Theodor W. Adorno, 19.11.1961; 1 Brief von Theodor W. Adorno an Edith B. Berlebach, 16.11.1961; 2 Briefe zwischen dem Institut für staatsbürgerliche Bildung in Rheinland-Pflalz (Mainz) und Theodor W. Adorno, 11.09.1961; 1 Brief der American Council of Learned Societies (New York) an Max Horkheimer, 29.08.1961; 1 Brief von dem Kuratorium Unteilbares Deutschland (Bonn) an Theodor W. Adorno, 06.06.1961; 1 Brief des Hessichen Ministers für Erziehung und Volksbildung an Theodor W. Adorno, 05.06.1961; 1 Brief von Theodor W. Adorno an Walter Schlesinger, 06.12.1962; 1 Brief von Walter Schlesinger an Max Horkheimer, 02.08.1963; 1 Brief von Theodor W. Adorno an W. R. Beyer, 05.05.1962; 1 Brief von Theodor W. Adorno an Pierre de Bie, 16.03.1962; 1 Brief von Edgar Morin an Theodor W. Adorno, 07.02.1962;
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55 Briefe zwischen Otto Kirchheimer, Anne Kirchheimer und Max Horkheimer, 1937 - 1947; 1 Brief von Otto und Anne Kirchheimer an Frederick Pollock, 06.08.1939; 2 Briefe zwischen der Rockfeller Foundation (New York) und Max Horkheimer, März 1941; 1 Brief von dem Oberlaender Trust an Frederick Pollock, 10.02.1941; 1 Brief von Otto Kirchheimer an Frederick Pollock, 06.08.1939; 1 Brief von Max Horkheimer an das American College Bureau (Chicago), 07.10.1940; 1 Brief von Max Horkheimer an das College and Specialist Bureau (Memphis, T.), 23.09.1939; 2 Briefe zwischen Max Horkheimer und dem Social Science Research Council (New York), 17.12.1938; 73 Briefe zwischen Leo Löwenthal und Max Horkheimer 1933 - 1935; 1 Brief von dem Europa Verlag A. G. (Zürich) an Max Horkheimer, 30.11.1935; 1 Brief von Max Horkheimer an das United States Department of Labor (New York), 03.05.1935; 2 Briefe von Hugo Sinzheimer an Max Horkheimer, 11.06.1934; 1 Brief von Leo Löwenthal an Hugo Sinzheimer, 16.07.1934; 2 Briefe zwischen Leo Löwenthal und Fritz Schiff, 1934/1935;
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Brief an die tote Frau