Results 1 to 10 of about 220,365 (119)

Cryogenic 4D-STEM analysis of an amorphous-crystalline polymer blend: Combined nanocrystalline and amorphous phase mapping [PDF]

iScience, 2022
Summary: Understanding and visualizing the heterogeneous structure of immiscible semicrystalline polymer systems is critical for optimizing their morphology and microstructure. We demonstrate a cryogenic 4D-STEM technique using a combination of amorphous
Jennifer Donohue, Steven E. Zeltmann, Karen C. Bustillo, Benjamin Savitzky, Mary Ann Jones, Gregory F. Meyers, Colin Ophus, Andrew M. Minor   +7 more
doaj   +2 more sources

HaloTag-based reporters for sparse labeling and cell tracking

Fly, 2022
Multiscale analysis of morphogenesis requires to follow and measure in real-time the in vivo behaviour of large numbers of individual cells over long period of time.
Lydie Couturier, Juan Luna, Khalil Mazouni, Claire Mestdagh, Minh-Son Phan, Francis Corson, Francois Schweisguth   +6 more
doaj   +1 more source

Preliminary Study on Effect of Lactiplantibacillus plantarum on Osteoporosis in the Ovariectomized Rat

Food Science of Animal Resources, 2023
Osteoporosis is a growing global health concern primarily associated with decreased estrogen in postmenopausal women. Recently, some strains of probiotics were examined for potential anti-osteoporotic effects.
Eun-Sun Jin, Ji Yeon Kim, JoongKee Min, Sang Ryong Jeon, Kyoung Hyo Choi, Shehzad Abid Khan, Gi-Seong Moon, Je Hoon Jeong   +7 more
doaj   +1 more source

Probing atomic-scale symmetry breaking by rotationally invariant machine learning of multidimensional electron scattering

npj Computational Materials, 2021
The 4D scanning transmission electron microscopy (STEM) method maps the structure and functionality of solids on the atomic scale, yielding information-rich data sets describing the interatomic electric and magnetic fields, structural and electronic ...
Mark P. Oxley, Maxim Ziatdinov, Ondrej Dyck, Andrew R. Lupini, Rama Vasudevan, Sergei V. Kalinin   +5 more
doaj   +1 more source

Powder Nano-Beam Diffraction in Scanning Electron Microscope: Fast and Simple Method for Analysis of Nanoparticle Crystal Structure

Nanomaterials, 2021
We introduce a novel scanning electron microscopy (SEM) method which yields powder electron diffraction patterns. The only requirement is that the SEM microscope must be equipped with a pixelated detector of transmitted electrons. The pixelated detectors
Miroslav Slouf, Radim Skoupy, Ewa Pavlova, Vladislav Krzyzanek   +3 more
doaj   +1 more source

Imaging the electron charge density in monolayer MoS2 at the Ångstrom scale

Nature Communications, 2023
Four-dimensional scanning transmission electron microscopy (4D-STEM) has recently gained widespread attention for its ability to image atomic electric fields with sub-Ångstrom spatial resolution.
Joel Martis, Sandhya Susarla, Archith Rayabharam, Cong Su, Timothy Paule, Philipp Pelz, Cassandra Huff, Xintong Xu, Hao-Kun Li, Marc Jaikissoon, Victoria Chen, Eric Pop, Krishna Saraswat, Alex Zettl, Narayana R. Aluru, Ramamoorthy Ramesh, Peter Ercius, Arun Majumdar   +17 more
doaj   +1 more source

Using a fast hybrid pixel detector for dose-efficient diffraction imaging beam-sensitive organic molecular thin films

JPhys Materials, 2023
We discuss the benefits and showcase the applications of using a fast, hybrid-pixel detector (HPD) for 4D-STEM experiments and emphasize that in diffraction imaging the structure of molecular nano-crystallites in organic solar cell thin films with a dose-
Mingjian Wu, Daniel G Stroppa, Philipp Pelz, Erdmann Spiecker   +3 more
doaj   +1 more source

Real‐Space Observation of Potential Reconstruction at Metallic/Insulating Oxide Interface

Advanced Materials Interfaces, 2023
Electric field reconstruction at interfaces plays a crucial role in device performances controlling, for example, Schottky potential barrier and interfacial Rashba effect.
Qingxuan Jia, Alexandre Gloter
doaj   +1 more source

4D Self‐Morphing Culture Substrate for Modulating Cell Differentiation

Advanced Science, 2020
As the most versatile and promising cell source, stem cells have been studied in regenerative medicine for two decades. Currently available culturing techniques utilize a 2D or 3D microenvironment for supporting the growth and proliferation of stem cells.
Shida Miao, Haitao Cui, Timothy Esworthy, Bhushan Mahadik, Se‐jun Lee, Xuan Zhou, Sung Yun Hann, John P. Fisher, Lijie Grace Zhang   +8 more
doaj   +1 more source

Small extracellular vesicles derived from four dimensional-culture of mesenchymal stem cells induce alternatively activated macrophages by upregulating IGFBP2/EGFR to attenuate inflammation in the spinal cord injury of rats

Frontiers in Bioengineering and Biotechnology, 2023
Effectively reducing the inflammatory response after spinal cord injury (SCI) is a challenging clinical problem and the subject of active investigation.
Junhua Wang, Qingshuai Wei, Yue Yang, Mingtian Che, Yuanhuan Ma, Lizhi Peng, Haiyang Yu, Huijuan Shi, Guanheng He, Rongjie Wu, Ting Zeng, Xiang Zeng, Wenbin Ma   +12 more
doaj   +1 more source