Results 91 to 100 of about 7,202 (228)

Continuous-Wave THz Imaging for Biomedical Samples

Applied Sciences, 2020
In the past few decades, the applications of terahertz (THz) spectroscopy and imaging technology have seen significant developments in the fields of biology, medical diagnosis, food safety, and nondestructive testing.
Yaya Zhang, Chuting Wang, Bingxin Huai, Shiyu Wang, Yating Zhang, Dayong Wang, Lu Rong, Yongchang Zheng   +7 more
doaj   +1 more source

The Phase-Contrast Imaging Instrument at the Matter in Extreme Conditions Endstation at LCLS

, 2016
We describe the Phase-Contrast Imaging instrument at the Matter in Extreme Conditions (MEC) endstation of the Linac Coherent Light Source. The instrument can image phenomena with a spatial resolution of a few hundreds of nanometers and at the same time ...
Arnold, Brice, Brown, Shaughnessy B., Fry, Alan, Galtier, Eric C., Gleason, Arianna, Granados, Eduardo, Hashim, Akel, Hastings, Jerome B., Lee, Hae Ja, Nagler, Bob, Samberg, Dirk, Schroer, Christian G., Schropp, Andreas, Seiboth, Frank, Tavella, Franz, Xing, Zhou   +15 more
core   +1 more source

First born model for reflection-mode Fourier ptychographic microscopy [PDF]

, 2018
We validate a first Born approximation based model for Reflection-mode Fourier ptychography under the semi-infinite boundary condition. Our model enables optical thickness and absorption recovery with enhanced resolution from thin samples.Published ...
Matlock, Alex, Sentenac, Anne, Tian, Lei, Yi, Ji   +3 more
core   +1 more source

From Molecules to Modules: Advanced Characterization of Membrane Systems

Advanced Materials, Volume 38, Issue 1, 2 January 2026.
Membrane technologies can enhance the efficiency and selectivity of chemical separations in energy‐water systems. Improving our understanding and design of separation membranes will require studying their properties at the molecular scale, mesoscale, and macroscale. This perspective highlights advanced characterization techniques for revealing membrane
Yaguang Zhu, Austin J. Booth, Jamila G. Eatman, Min A Kim, Yining Liu, Bidushi Sarkar, Bratin Sengupta, Xiaolin Yue, Chibueze V. Amanchukwu, Seth B. Darling, Jeffrey W. Elam, Paul Fenter, Chong Liu, Kelsey B. Hatzell   +13 more
wiley   +1 more source

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

Compensation for the setup instability in ptychographic imaging

, 2017
The high-frequency vibration of the imaging system degrades the quality of the reconstruction of ptychography by acting as a low-pass filter on ideal diffraction patterns.
Liu, Cheng, Yao, Yudong, Zhu, Jianqiang
core   +1 more source

Electron ptychography achieves atomic-resolution limits set by lattice vibrations [PDF]

, 2021
Zhen Chen, Yi Jiang, Yu‐Tsun Shao, Megan E. Holtz, Michal Odstrčil, Manuel Guizar‐Sicairos, I. Hanke, Steffen Ganschow, Darrell G. Schlom, David A. Muller   +9 more
openalex   +1 more source

Advanced Characterization of Proton Exchange Membrane Water Electrolyzers with Spatially‐Resolved X‐Ray Imaging

ChemCatChem, Volume 18, Issue 1, 15 January 2026.
This minireview highlights X‐ray imaging tools for investigating proton exchange membrane water electrolyzers at different scales. Spatially and temporally resolved techniques here reported provide essential insights into structural and chemical degradation within all the electrolyzer's components, necessary to bridge the gaps between model systems and
Leonardo Almeida De Campos, Paolo Ciocci, Johanna Schröder, Thomas L. Sheppard   +3 more
wiley   +1 more source

Visualizing Hydration‐Induced Cu Migration in SSZ‐13 Zeolite Through Electron Ptychography

ChemistrySelect, Volume 11, Issue 1, 8 January 2026.
Using electron ptychography, we directly visualized the structure of hydrated Cu ions in Cu‐SSZ‐13 zeolite. Coordination of water‐induced Cu migration toward the channel center. This study highlights the capability of ptychography for precise observation of metal ions in zeolites, offering insights for catalytic performance enhancement.
Masahiko Shimizu, Katsuaki Nakazawa, Hisashi Shima, Masakazu Koike, Hajime Matsumoto, Takahiko Takewaki, Kazutaka Mitsuishi, Ayako Hashimoto   +7 more
wiley   +1 more source