Results 31 to 40 of about 87,415 (264)
Unusual Breathing Behavior of Optically Excited Barium Titanate Nanocrystals
Crystals, 2020 Coherent X-ray diffraction patterns were recorded by using an X-ray free-electron laser to illuminate barium titanate nanocrystals as a function of time delay after laser excitation.
Jiecheng Diao +10 more
doaj +1 more source
Single-Shot Coherent X-ray Imaging Instrument at PAL-XFEL
Applied Sciences, 2021 We developed a single-shot coherent X-ray imaging instrument at the hard X-ray beamline of the Pohang Accelerator Laboratory X-ray Free Electron Laser (PAL-XFEL).
Daeho Sung +14 more
doaj +1 more source
THz coherent lensless imaging [PDF]
Applied Optics, 2019 Imaging with THz radiation has proved an important tool for both fundamental science and industrial use. Here we review a class of THz imaging implementations, named coherent lensless imaging, that reconstruct the coherent response of arbitrary samples with a minimized experimental setup based only on a coherent source and a camera.
Lorenzo Valzania +6 more
openaire +3 more sources
Imaging Embryonic Stem Cell Dynamics Using Quantitative 3-D Digital Holographic Microscopy
IEEE Photonics Journal, 2011 Embryonic stem cells are very important for the development of cell-based therapeutic strategies. Since stem cell colonies are nonpigmented and relatively transparent, they do not produce appreciable variation to the amplitude of probe electromagnetic ...
A. Anand, V. K. Chhaniwal, B. Javidi
doaj +1 more source
Photon-Counting Security Tagging and Verification Using Optically Encoded QR Codes
IEEE Photonics Journal, 2014 We propose an optical security method for object authentication using photon-counting encryption implemented with phase encoded QR codes. By combining the full phase double-random-phase encryption with photon-counting imaging method and applying an ...
A. Markman, B. Javidi, M. Tehranipoor
doaj +1 more source
The Potential of EuPRAXIA@SPARC_LAB for Radiation Based Techniques
Condensed Matter, 2019 A proposal for building a Free Electron Laser, EuPRAXIA@SPARC_LAB, at the Laboratori Nazionali di Frascati, is at present under consideration. This FEL facility will provide a unique combination of a high brightness GeV-range electron beam generated in a
Antonella Balerna +34 more
doaj +1 more source
Information Limits of Optical Coherence Imaging Through Scattering Media
IEEE Photonics Journal, 2009 We develop an information-theoretic framework for the quantitative assessment of the maximum amount of information provided by optical coherence imaging through scattering media.
A. Bilenca +4 more
doaj +1 more source
IEEE Access, 2018 We demonstrate a computational, frequency-diverse, phaseless imaging technique at microwave frequencies that minimizes the impacts of phase calibration and alignment errors on image reconstruction.
Okan Yurduseven +2 more
doaj +1 more source
FEBS Letters, EarlyView.Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley +1 more source
Applied Sciences, 2018 Although digital holography is used widely at present, the information contained in the digital hologram is still underutilized. For example, the phase values of the Fourier spectra of the hologram are seldom used directly.
Huaying Wang +5 more
doaj +1 more source