Results 61 to 70 of about 1,387 (173)

X-ray Fourier ptychography [PDF]

Science Advances, 2019
A new image acquisition scheme increases resolution and sensitivity of x-ray microscopes.
Klaus Wakonig, Ana Diaz, Anne Bonnin, Marco Stampanoni, Anna Bergamaschi, Johannes Ihli, Manuel Guizar-Sicairos, Andreas Menzel   +7 more
openaire   +4 more sources

Direct observation of single-atom defects in monolayer two-dimensional materials by using electron ptychography at 200 kV acceleration voltage

Scientific Reports
Electron ptychography has emerged as a popular technology for high-resolution imaging by combining the high coherence of electron sources with the ultra-fast scanning electron coil.
Ying Chen, Tzu-Chieh Chou, Ching-Hsing Fang, Cheng-Yi Lu, Chien-Nan Hsiao, Wei-Ting Hsu, Chien-Chun Chen   +6 more
doaj   +1 more source

W1-Net: a highly scalable ptychography convolutional neural network

Advanced Optical Technologies
X-ray ptychography is a coherent diffraction imaging technique that allows for the quantitative retrieval of both the amplitude and phase information of a sample in diffraction-limited resolution.
Chengye Xing, Chengye Xing, Lei Wang, Yangyang Mu, Yu Li, Yu Li, Guangcai Chang   +6 more
doaj   +1 more source

Hardware‐Attentive Programmable Fourier Ptychography Enables Task‐Adaptive Label‐Free Virtual Staining (Adv. Sci. 46/2026)

Advanced Science, Volume 13, Issue 46, 17 August 2026.
Programmable Optical Virtual Staining A brilliant burst of programmable light bridges the transformation from label‐free tissue to vivid virtual H&E histology, unveiling the hidden biological information encoded within intrinsic optical signals. Through the synergy of optical coding and computational imaging, the cover captures a seamless transition ...
Tianyue He, Wenyi Jing, Le Zhang, Qican Zhang, Tingdong Kou, Xin He, Yan Qiu, Yang Lu, Jian Cui, Yongfu Wen, Zhenrong Zheng, Hongying Zhang, Dayong Jin, Junfei Shen   +13 more
wiley   +1 more source

High-Resolution Broadband Ptychography with an EUV Continuum

Photonics
Ptychography implemented with coherent high-harmonic (HHG) sources enables high-resolution, high-fidelity imaging of nanostructures and biosystems. However, when driven by mid-infrared lasers to generate light at higher photon energies, HHG inherently ...
Nicholas W. Jenkins, Wilhelm Eschen, Will Hettel, John Gallagher, Benjamin Shearer, Gabriella Seifert, Yunzhe Shao, Clay Klein, Drew Morrill, Grzegorz Golba, Michaël Hemmer, Henry Kapteyn, Margaret Murnane   +12 more
doaj   +1 more source

Extending Field Limits in Nanoscale Magnetic Imaging With Metamaterial‐Inspired Magnetic Flux Concentrators

Small, Volume 22, Issue 43, 3 August 2026.
Micrometer‐sized flower‐shaped metamaterial magnetic flux concentrators are fabricated directly around nano and micromagnetic samples, enabling local field enhancement. Integrated into magnetic sensitive photoemission electron microscopy, they extend the available magnetic field range by up to a factor of five.
Aleix Barrera, Emile Fourneau, Thomas Pirottin, Lourdes Marcano, Radu Abrudan, Rong Huang, Lluis Balcells, Iñaki Orue, Maria‐Luisa Fdez‐Gubieda, Danny Villanueva, Alicia G. Gubieda, Liao Chang, Benoît Vanderheyden, Richard J. Harrison, Alejandro Silhanek, Anna Palau, Sergio Valencia   +16 more
wiley   +1 more source

Uncertainty-aware Fourier ptychography

Light: Science & Applications
Abstract Fourier ptychography (FP) offers both wide field-of-view and high-resolution holographic imaging, making it valuable for applications ranging from microscopy and X-ray imaging to remote sensing. However, its practical implementation remains challenging due to the requirement for precise numerical forward models that ...
Ni Chen, Yang Wu, Chao Tan, Liangcai Cao, Jun Wang, Edmund Y. Lam   +5 more
openaire   +2 more sources

Convergent‐beam X‐ray crystallography

Journal of Applied Crystallography, Volume 59, Issue 4, Page 1200-1218, August 2026.
Molecular crystal diffraction with a highly focused X‐ray beam decouples crystal morphology and molecular structure by measuring magnified topographs from every reflection.Molecular and polymeric crystals show a wide range of functional properties that arise from the interplay between the atomic‐scale structure of their constituent molecules and the ...
Chufeng Li, Margarita Zakharova, Mauro Prasciolu, Jia Chyi Wong, Holger Fleckenstein, Nikolay Ivanov, Wenhui Zhang, Mansi Butola, J. Lukas Dresselhaus, Ivan De Gennaro Aquino, Dmitry Egorov, Philipp Middendorf, Alessa Henkel, Bjarne Klopprogge, Lars Klemeyer, Tobias Beck, Oleksandr Yefanov, Miriam Barthelmess, Janina Sprenger, Dominik Oberthuer, Saša Bajt, Henry N. Chapman   +21 more
wiley   +1 more source

Ptychography of pure quantum states [PDF]

Scientific Reports, 2019
AbstractPtychography is an imaging technique in which a localized illumination scans overlapping regions of an object and generates a set of diffraction intensities used to computationally reconstruct its complex-valued transmission function. We propose a quantum analogue of this technique designed to reconstruct d-dimensional pure states.
Fernandes, Mário Foganholi, Neves, Leonardo   +1 more
openaire   +3 more sources

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, Volume 36, Issue 60, 27 July 2026.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source