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5 papers · 1 filter
Directional Dark Field for Nanoscale Full-Field Transmission X-Ray Microscopy
Sami Wirtensohn, Silja Flenner, Dominik John +12
Dark-field X-ray imaging visualizes structural inhomogeneities through small-angle scattering, but existing directional methods are confined to the micrometer scale. While recent a…
10 dB emission suppression in a structured low index medium
Soumyadeep Saha, Meraj E Mustafa, Manfred Eich +1
Significant suppression of radiation in 3D structured media with small refractive index 1.4-1.6, such as of glass or polymers, is a desirable feature yet to be obtained. For period…
Fourier optics with linearly tapered waveguides: light trapping and focusing
Mahmoud A. Gaafar, Hagen Renner, Manfred Eich +1
An optical pulse asymptotically reaching zero group velocity in tapered waveguides can ultimately stop at a certain position in the taper accompanied by a strong spatial compressio…
Ewald sphere construction for structural colors
Lukas Maiwald, Slawa Lang, Dirk Jalas +3
Disordered structures producing a non-iridescent color impression have been shown to feature a spherically shaped Fourier transform of their refractive-index distribution. We deter…
Photonic glass for high contrast structural color
Guoliang Shang, Lukas Maiwald, Hagen Renner +5
Non-iridescent structural colors based on disordered arrangement of monodisperse spherical particles, also called photonic glass, show low color saturation due to gradual transitio…