FS-PETRA

Latest additions:
2017-12-06
13:22
DBCoverage [PUBDB-2017-12786] Journal Article
; ; ; et al
Ptychographic analysis of the photorefractive effect in LiNbO$_{3}$:Fe
Optics express 25(25), 31640 - 31650 (2017) [10.1364/OE.25.031640]  GO
ddc:530
We present light induced refractive index changes in iron doped lithium niobate detected with a novel microscopy technique called ptychography. This method determines the change of the refractive index together with the intensity distribution of the writing beam from a single scan with a reconstructed spatial resolution of 3 μm and a sensitivity of the refractive index change of 10$^{−5}$ [...]
Restricted: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-10-23
16:15
OpenAccess [PUBDB-2017-11500] Journal Article
; ; ; et al
Focal Spot and Wavefront Sensing of an X-Ray Free Electron laser using Ronchi shearing interferometry
ddc:000
The Linac Coherent Light Source (LCLS) is an X-ray source of unmatched brilliance, that is advancing many scientific fields at a rapid pace. The highest peak intensities that are routinely produced at LCLS take place at the Coherent X-ray Imaging (CXI) instrument, which can produce spotsize at the order of 100 nm, and such spotsizes and intensities are crucial for experiments ranging from coherent diffractive imaging, non-linear x-ray optics and high field physics, and single molecule imaging. [...]
OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-08-31
11:03
OpenAccess [PUBDB-2017-10179] Journal Article
; ; ; et al
Imaging at an x-ray absorption edge using free electron laser pulses for interface dynamics in high energy density systems
ddc:530
Tuning the energy of an x-ray probe to an absorption line or edge can provide material-specific measurements that are particularly useful for interfaces. Simulated hard x-ray images above the Fe K-edge are presented to examine ion diffusion across an interface between Fe$_2$O$_3$ and SiO$_2$ aerogel foam materials [...]
OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-08-26
16:35
OpenAccess [PUBDB-2017-09888] Dissertation / PhD Thesis
; ;
Resonant Hard X-ray Ptychography for High-Sensitivity Imaging with Chemical Contrast
125 pp. (2017) [10.3204/PUBDB-2017-09888] = University of Hamburg, Diss., 2017  GO
For the detailed investigation of biological, chemical or physical processes on the nano scale, high-resolution imaging techniques are essential. For this purpose, the coherentimaging technique – X-ray ptychography – has been established in recent years. [...]
OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-07-25
19:31
[PUBDB-2017-08515] Dissertation / PhD Thesis
; ;
Resonant Hard X-ray Ptychography for High-Sensitivity Imaging with Chemical Contrast
124 pp. (2017) = University of Hamburg, Diss., 2017

Detailed record - Similar records
2017-06-23
13:44
[PUBDB-2017-05999] Journal Article
; ; ; et al
Evolutionary-Optimized Photonic Network Structure in White Beetle Wing Scales
ddc:540
Detailed record - Similar records
2017-06-02
13:56
[PUBDB-2017-04214] Journal Article
; ; ; et al
Stability of a Bifunctional Cu-Based Core@Zeolite Shell Catalyst for Dimethyl Ether Synthesis Under Redox Conditions Studied by Environmental Transmission Electron Microscopy and In Situ X-Ray Ptychography
ddc:570
When using bifunctional core@shell catalysts, the stability of both the shell and core–shell interface is crucial for catalytic applications. In the present study, we elucidate the stability of a CuO/ZnO/Al$_2$O$_3$@ZSM-5 core@shell material, used for one-stage synthesis of dimethyl ether from synthesis gas. [...]
Restricted: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-03-07
23:01
OpenAccess [PUBDB-2017-01322] Journal Article
; ; ; et al
Structure and Composition of Isolated Core-Shell (In, Ga) N/GaN Rods Based on Nanofocus X-Ray Diffraction and Scanning Transmission Electron Microscopy
ddc:530
Nanofocus x-ray diffraction is used to investigate the structure and local strain field of an isolated (In,Ga)N/GaN core-shell microrod. Because the high spatial resolution of the x-ray beam is only 80×90  nm$^2$, we are able to investigate several distinct volumes on one individual side facet. [...]
OpenAccess: Download fulltextPDF;

Detailed record - Similar records
2017-03-07
22:35
OpenAccess [PUBDB-2017-01321] Journal Article
; ; ; et al
Focusing hard x rays beyond the critical angle of total reflection by adiabatically focusing lenses
ddc:530
In response to the conjecture that the numerical aperture of x-ray optics is fundamentally limited by the critical angle of total reflection [Bergemann et al., Phys. Rev. [...]
OpenAccess: Download fulltextPDF;

Detailed record - Similar records
2017-03-03
11:23
OpenAccess [PUBDB-2017-01280] Journal Article
; ; ; et al
Perfect X-ray focusing via fitting corrective glasses to aberrated optics
ddc:500
Due to their short wavelength, X-rays can in principle be focused down to a few nanometres and below. At the same time, it is this short wavelength that puts stringent requirements on X-ray optics and their metrology [...]
OpenAccess: Download fulltextPDF;

Detailed record - Similar records