High‐Resolution Transmission X‐ray Microscopy: A New Tool for Mesoscopic Materials

Bosak, A.; Snigireva, I.; Napolskii, K. S.; Snigirev, A.

doi:10.1002/adma.201000173

Cited by 96 publications

(69 citation statements)

References 21 publications

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“…With a numerical aperture of order 1 mrad, CRL-based objectives are well matched to the high brilliance of synchrotron beams. A range of methodologies have been developed: magnified bright-field imaging (Lengeler et al, 1999), Zernike contrast microscopy (Falch et al, 2018), high-resolution microscopy for imaging colloidal aggregates (Bosak et al, 2010) and dark-field microscopy, where orientation and strains of deeply embedded grains or domains are mapped in three dimensions (Simons et al, 2015(Simons et al, , 2016. At the same time, direct space imaging can be complemented by diffraction in the back focal plane (Bosak et al, 2010;Ershov et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

The fractional Fourier transform as a simulation tool for lens-based X-ray microscopy

Pedersen

Simons

Detlefs

et al. 2018

J Synchrotron Radiat

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The fractional Fourier transform (FrFT) is introduced as a tool for numerical simulations of X-ray wavefront propagation. By removing the strict sampling requirements encountered in typical Fourier optics, simulations using the FrFT can be carried out with much decreased detail, allowing, for example, on-line simulation during experiments. Moreover, the additive index property of the FrFT allows the propagation through multiple optical components to be simulated in a single step, which is particularly useful for compound refractive lenses (CRLs). It is shown that it is possible to model the attenuation from the entire CRL using one or two effective apertures without loss of accuracy, greatly accelerating simulations involving CRLs. To demonstrate the applicability and accuracy of the FrFT, the imaging resolution of a CRL-based imaging system is estimated, and the FrFT approach is shown to be significantly more precise than comparable approaches using geometrical optics. Secondly, it is shown that extensive FrFT simulations of complex systems involving coherence and/or non-monochromatic sources can be carried out in minutes. Specifically, the chromatic aberrations as a function of source bandwidth are estimated, and it is found that the geometric optics greatly overestimates the aberration for energy bandwidths of around 1%.

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Section: Introductionmentioning

confidence: 99%

The fractional Fourier transform as a simulation tool for lens-based X-ray microscopy

Pedersen

Simons

Detlefs

et al. 2018

J Synchrotron Radiat

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“…To put it more exactly, our approach is based on microradian x-ray diffraction study and comparison of a number of IOLCs with different thickness, thereby implicitly characterizing the original matrix. Herewith, we propose using a 3D visualization of reciprocal space as a very intuitive representation [42,43]. For the reciprocal space reconstruction we used locally developed software.…”

Section: B Indirect Methods To Study the Layered Structure Of Originamentioning

confidence: 99%

Periodic order and defects in Ni-based inverse opal-like crystals on the mesoscopic and atomic scale

et al. 2014

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The structure of inverse opal crystals based on nickel was probed on the mesoscopic and atomic levels by a set of complementary techniques such as scanning electron microscopy and synchrotron microradian and wide-angle diffraction. The microradian diffraction revealed the mesoscopic-scale face-centered-cubic (fcc) ordering of spherical voids in the inverse opal-like structure with unit cell dimension of 750 ± 10 nm. The diffuse scattering data were used to map defects in the fcc structure as a function of the number of layers in the Ni inverse opal-like structure. The average lateral size of mesoscopic domains is found to be independent of the number of layers. 3D reconstruction of the reciprocal space for the inverse opal crystals with different thickness provided an indirect study of original opal templates in a depth-resolved way. The microstructure and thermal response of the framework of the porous inverse opal crystal was examined using wide-angle powder x-ray diffraction. This artificial porous structure is built from nickel crystallites possessing stacking faults and dislocations peculiar for the nickel thin films.

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“…We developed a high resolution x-ray microscopy (HRXRM) based on parabolic compound refractive lenses (CRL) [10]. The immediate benefit of using a lens-based methodology is the possibility to retrieve the high-resolution diffraction pattern and real-space images in the same experimental setup [11][12][13]. This concept, well-known in TEM, is the key ingredient of our approach.…”

Section: Introductionmentioning

confidence: 99%

Towards High-Resolution X-ray Microscopy on Mesoscopic Structures

Bosak¹,

Snigirev²,

McNulty³

et al. 2011

AIP Conference Proceedings

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Abstract. We introduce a high-resolution x-ray microscopy (HRXRM) based on parabolic compound refractive lenses for the volume-specific studies of mesoscopic photonic crystals. The use of coherent properties of x-ray beams along with the tunable refractive optics allows retrieval of the high-resolution diffraction pattern and real-space images in the same experimental setup. Methodologically the proposed approach is similar to the studies of "traditional" crystals by high-resolution transmission electron microscopy (HRTEM).

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High‐Resolution Transmission X‐ray Microscopy: A New Tool for Mesoscopic Materials

Cited by 96 publications

References 21 publications

The fractional Fourier transform as a simulation tool for lens-based X-ray microscopy

The fractional Fourier transform as a simulation tool for lens-based X-ray microscopy

Periodic order and defects in Ni-based inverse opal-like crystals on the mesoscopic and atomic scale

Towards High-Resolution X-ray Microscopy on Mesoscopic Structures

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