Evolutionary determination of experimental parameters for ptychographical imaging

Journal Article · Wed Jun 15 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3600235· OSTI ID:21538466

Shenfield, Alex ^[1]; Rodenburg, John M ^[2]

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1. School of Engineering, Manchester Metropolitan University, John Dalton Building, Chester Street, Manchester, M1 5GD (United Kingdom)
2. Department of Electronic and Electrical Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD (United Kingdom)

The Ptychographical Iterative Engine (PIE) algorithm is a recently developed novel method of Coherent Diffractive Imaging (CDI) that uses multiple overlapping diffraction patterns to reconstruct an image. This method has successfully produced high quality reconstructions at both optical and X-ray wavelengths but the need for accurate knowledge of the probe positions is currently a limiting factor in the production of high resolution reconstructions at electron wavelengths. This paper examines the shape of the search landscape for producing optimal image reconstructions in the specific case of electron microscopy and then shows how evolutionary search methods can be used to reliably determine experimental parameters in the electron microscopy case (such as the spherical aberration in the probe and the probe positions).

• OSTI ID: 21538466
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 12; Other Information: DOI: 10.1063/1.3600235; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
CHROMOSOMES
EFFICIENCY
ELECTRON MICROSCOPY
EXCISION REPAIR
IMAGE PROCESSING
RESOLUTION
STABILITY
SYNTHESIS
WAVELENGTHS
X RADIATION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
BIOLOGICAL RECOVERY
BIOLOGICAL REPAIR
COHERENT SCATTERING
DIFFRACTION
DNA REPAIR
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
IONIZING RADIATIONS
MATHEMATICAL LOGIC
MICROSCOPY
PHOTOELECTRON SPECTROSCOPY
PROCESSING
RADIATIONS
REPAIR
SCATTERING
SPECTROSCOPY