Journal ArticleDOI
Movable aperture lensless transmission microscopy: a novel phase retrieval algorithm.
TLDR
An iterative phase retrieval method that uses a series of diffraction patterns, measured only in intensity, to solve for both amplitude and phase of the image wave function over a wide field of view and at wavelength-limited resolution is proposed.Abstract:
We propose an iterative phase retrieval method that uses a series of diffraction patterns, measured only in intensity, to solve for both amplitude and phase of the image wave function over a wide field of view and at wavelength-limited resolution. The new technique requires an aperture that is scanned to two or more positions over the object wave function. A simple implementation of the method is modeled and demonstrated, showing how the algorithm uses overlapping data in real space to resolve ambiguities in the solution. The technique opens up the possibility of practical transmission lensless microscopy at subatomic resolution using electrons, x rays, or nuclear particles.read more
Citations
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Journal ArticleDOI
Wide-field, high-resolution Fourier ptychographic microscopy
TL;DR: An imaging method, termed Fourier ptychographic microscopy (FPM), which iteratively stitches together a number of variably illuminated, low-resolution intensity images in Fourier space to produce a wide-field, high-resolution complex sample image, which can also correct for aberrations and digitally extend a microscope's depth-of-focus beyond the physical limitations of its optics.
Journal ArticleDOI
High-Resolution Scanning X-ray Diffraction Microscopy
Pierre Thibault,Martin Dierolf,Andreas Menzel,Oliver Bunk,Christian David,Franz Pfeiffer,Franz Pfeiffer +6 more
TL;DR: A ptychographic imaging method is demonstrated that bridges the gap between CDI and STXM by measuring complete diffraction patterns at each point of a STXM scan.
Journal ArticleDOI
Ptychographic X-ray computed tomography at the nanoscale
Martin Dierolf,Andreas Menzel,Pierre Thibault,Philipp Schneider,Cameron M. Kewish,Roger Wepf,Oliver Bunk,Franz Pfeiffer +7 more
TL;DR: An X-ray computed tomography technique that generates quantitative high-contrast three-dimensional electron density maps from phase contrast information without reverting to assumptions of a weak phase object or negligible absorption is described.
Journal ArticleDOI
Hard-X-Ray Lensless Imaging of Extended Objects
John M. Rodenburg,A C Hurst,A. G. Cullis,B. R. Dobson,Franz Pfeiffer,Oliver Bunk,Christian David,Konstantins Jefimovs,Ian Johnson +8 more
TL;DR: A hard-x-ray microscope that does not use a lens and is not limited to a small field of view or an object of finite size is demonstrated, which has revolutionary implications for x-ray imaging of all classes of specimen.
Journal ArticleDOI
A phase retrieval algorithm for shifting illumination
TL;DR: In this paper, a method of iterative phase retrieval that uses measured intensities in the diffraction plane to solve the phase problem in a way that bypasses the problem of lens aberration was proposed.
References
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Journal ArticleDOI
Phase retrieval algorithms: a comparison.
TL;DR: Iterative algorithms for phase retrieval from intensity data are compared to gradient search methods and it is shown that both the error-reduction algorithm for the problem of a single intensity measurement and the Gerchberg-Saxton algorithm forThe problem of two intensity measurements converge.
Journal Article
A practical algorithm for the determination of phase from image and diffraction plane pictures
TL;DR: In this article, an algorithm is presented for the rapid solution of the phase of the complete wave function whose intensity in the diffraction and imaging planes of an imaging system are known.
Journal ArticleDOI
Extending the methodology of X-ray crystallography to allow imaging of micrometre-sized non-crystalline specimens
TL;DR: Extending the methodology of X-ray crystallography to allow imaging of micrometre-sized non-crystalline specimens was proposed in this paper, where the authors extended the methodology to allow the imaging of micro-scale specimens.
Journal ArticleDOI
Atomic Resolution Imaging of a Carbon Nanotube from Diffraction Intensities
Jian-Min Zuo,Jian-Min Zuo,I. Vartanyants,I. Vartanyants,Min Gao,Min Gao,R. Zhang,R. Zhang,Larry A. Nagahara,Larry A. Nagahara +9 more
TL;DR: This work shows that both high resolution and high contrast can be achieved by imaging from diffraction with a nanometer-sized coherent electron beam, and has the potential to image nonperiodic nanostructures, including biological macromolecules, at diffraction intensity–limited resolutions.
Journal ArticleDOI
Beugung im inhomogenen Primärstrahlwellenfeld. I. Prinzip einer Phasenmessung von Elektronenbeungungsinterferenzen
TL;DR: In this article, the amplitude and phase information can also be obtained from a generalized diffraction experiment (in spite of the inability of the detector to observe phases directly) on condition that the primary ray can be controlled in a defined way.