Results 241 to 250 of about 70,372 (266)

Improved Disorder Resilience in Small‐Footprint Photonic Cavities with Periodicity Breaking

Advanced Optical Materials, EarlyView.
Compact photonic crystal cavities with engineered aperiodicity are demonstrated to sustain high quality factormodes and enhanced reproducibility within a minimal footprint. Combining numerical optimization and near‐field measurements, the study reveals how controlled periodicity breaking improves disorder resilience, offering a robust and scalable ...
Nicoletta Granchi, Camilla Gonzini, Matteo Lodde, Gabriele Calusi, René P. J. van Veldhoven, Andrea Fiore, Guillermo Arregui, Francesca Intonti   +7 more
wiley   +1 more source

Sub-ångström resolution ptychography in a scanning electron microscope at 20 keV. [PDF]

Nat Commun
Blackburn AM, Cordoba C, Fitzpatrick MR, McLeod RA.   +3 more
europepmc   +1 more source

Ultrafast tomograms in a flash. [PDF]

Sci Adv
Tian L.
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Fresnel Coherent Diffractive Imaging

Physical Review Letters, 2006
We present an x-ray coherent diffractive imaging experiment utilizing a nonplanar incident wave and demonstrate success by reconstructing a nonperiodic gold sample at 24 nm resolution. Favorable effects of the curved beam illumination are identified.
Williams, G. J., Paterson, D., Nugent, Keith A., Quiney, H. M., Tran, Chanh Quoc., De Jonge, M. D., Dhal, B. B., Peele, Andrew.   +7 more
openaire   +3 more sources

Dynamic sample imaging in coherent diffractive imaging

Optics Letters, 2011
As the resolution in coherent diffractive imaging improves, interexposure and intraexposure sample dynamics, such as motion, degrade the quality of the reconstructed image. Selecting data sets that include only exposures where tolerably little motion has occurred is an inefficient use of time and flux, especially when detector readout time is ...
Jesse N, Clark, Corey T, Putkunz, Evan K, Curwood, David J, Vine, Robert, Scholten, Ian, McNulty, Keith A, Nugent, Andrew G, Peele   +7 more
openaire   +2 more sources

Coherent diffractive imaging and partial coherence

Physical Review B, 2007
We formulate coherent diffractive imaging in the framework of partially spatially coherent diffraction. We find that the reconstruction can be critically dependent on the degree of coherence in the illuminating field and that even a small departure from full coherence may invalidate the conventional assumption that a mapping exists between an exit ...
Williams, Garth J., Quiney, Harry M., Peele, Andrew G., Nugent, Keith A.   +3 more
openaire   +1 more source

Birefringent coherent diffraction imaging

SPIE Proceedings, 2016
Directional dependence of the index of refraction contains a wealth of information about anisotropic optical properties in semiconducting and insulating materials. Here we present a novel high-resolution lens-less technique that uses birefringence as a contrast mechanism to map the index of refraction and dielectric permittivity in optically ...
Karpov, Dmitry, Santos Rolo, Tomy dos, Rich, Hannah, Kryuchkov, Yuriy, Kiefer, Boris, Fohtung, E., Drouhin, Henri-Jean, Wegrowe, Jean-Eric, Razeghi, Manijeh   +8 more
openaire   +2 more sources