Results 71 to 80 of about 29,331 (339)
Design, Analysis, and Manufacturing of Diffractive Achromatic Optical Systems
MicromachinesThe increasing resolution requirements of imaging optical systems must be satisfied by expanding the aperture of the optical system according to Rayleigh’s criterion, and larger apertures of conventional refractive/reflective optics place a greater ...
Yidi Zheng +5 more
doaj +1 more source
IEEE Photonics Journal, 2022 We have developed a guided ptychography iterative engine (gPIE) algorithm that applies the concept of optimization to the conventional ePIE (extended ptychography iterative engine) approach.
Cheng-Wei Hsu +6 more
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Snapshot 3D tracking of insulin granules in live cells
, 2018 Rapid and accurate volumetric imaging remains a challenge, yet has the potential to enhance understanding of cell function. We developed and used a multifocal microscope (MFM) for 3D snapshot imaging to allow 3D tracking of insulin granules labeled with ...
Alan Selewa +8 more
core +1 more source
Compressive electron backscatter diffraction imaging
Journal of MicroscopyAbstractElectron backscatter diffraction (EBSD) has developed over the last few decades into a valuable crystallographic characterisation method for a wide range of sample types. Despite these advances, issues such as the complexity of sample preparation, relatively slow acquisition, and damage in beam‐sensitive samples, still limit the quantity and ...
Broad, Z +6 more
openaire +4 more sources
Advanced Engineering Materials, EarlyView.The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan +4 more
wiley +1 more source
Terahertz structured light: nonparaxial Airy imaging using silicon diffractive optics
Light: Science & Applications, 2022 Demonstration of generation of terahertz structured light in a form of configurable Airy beam for imaging aims and 2D materials inspection using exclusively flat silicon diffractive optics.
Rusnė Ivaškevičiūtė-Povilauskienė +11 more
doaj +1 more source
Quantitative Imaging of Single, Unstained Viruses with Coherent X-rays
, 2008 Since Perutz, Kendrew and colleagues unveiled the structure of hemoglobin and myoglobin based on X-ray diffraction analysis in the 1950s, X-ray crystallography has become the primary methodology used to determine the 3D structure of macromolecules ...
A. C. Steven +11 more
core +1 more source
Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
The linac coherent light source single particle imaging road map
Structural Dynamics, 2015 Intense femtosecond x-ray pulses from free-electron laser sources allow the imaging of individual particles in a single shot. Early experiments at the Linac Coherent Light Source (LCLS) have led to rapid progress in the field and, so ...
A. Aquila +29 more
doaj +1 more source
Deterministic Bragg Coherent Diffraction Imaging [PDF]
Scientific Reports, 2017 AbstractA deterministic variant of Bragg Coherent Diffraction Imaging is introduced in its kinematical approximation, for X-ray scattering from an imperfect crystal whose imperfections span no more than half of the volume of the crystal. This approach provides a unique analytical reconstruction of the object’s structure factor and displacement fields ...
Konstantin M. Pavlov +4 more
openaire +4 more sources