Results 21 to 30 of about 61,047 (214)

Measuring the effect of electrostatic patch potentials in Casimir force experiments

Physical Review Research, 2020
The Casimir force is a consequence of quantum electrodynamic fluctuations, which induce interactions between materials. Patch potentials (i.e., spatial variations of electrostatic potentials across a surface) are a concern in measurements of the Casimir ...
Joseph L. Garrett, Jongbum Kim, Jeremy N. Munday   +2 more
doaj   +1 more source

Photoelectrical Properties Investigated on Individual Si Nanowires and Their Size Dependence

Nanoscale Research Letters, 2021
Periodically ordered arrays of vertically aligned Si nanowires (Si NWs) are successfully fabricated with controllable diameters and lengths. Their photoconductive properties are investigated by photoconductive atomic force microscopy (PCAFM) on ...
Xiaofeng Hu, Shujie Li, Zuimin Jiang, Xinju Yang   +3 more
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Theory for measuring electric charge density of a ring from scanning force microscopy

AIP Advances
We consider a ring that carries an arbitrary electric charge density in the presence of a scanning force microscopy tip. We propose an algorithm that predicts this charge density from knowledge of the electrostatic ring-tip contribution to the total ...
M. Gordon, B. Goykadosh, Y. Magendzo, F. Zypman   +3 more
doaj   +1 more source

Interfacial electrostatic heterogeneity in water-processed natural rubber/MWCNT triboelectric nanogenerators [PDF]

RSC Applied Interfaces
Polymer-based triboelectric nanogenerators (TENGs) provide a useful platform for investigating interfacial charge organization in soft materials. However, the interfacial processes governing charge organization in elastomeric systems processed in aqueous
Fernanda V. Barasuol, Kelly S. Moreira, Fernando Galembeck, Aldo J. G. Zarbin, Thiago A. L. Burgo, Carolina Ferreira de Matos Jauris   +5 more
doaj   +1 more source

Autophagy and mitophagy in pancreatic β‐cell homeostasis and their involvement in diabetes pathophysiology

FEBS Letters, EarlyView.
This review focuses on the role of autophagy and mitophagy in maintaining pancreatic β‐cell function and homeostasis. We discuss how genetic defects affecting these pathways contribute to the development of type 1, type 2, monogenic, and gestational diabetes. We further explore their potential as therapeutic targets. Created in BioRender.
Yunkyeong Lee, Mingming Tong, Anna L. Gloyn   +2 more
wiley   +1 more source

Revisiting contact potential difference in electrostatic force microscopy

Journal of Physics Communications
Understanding the tip–substrate interaction in Electrostatic Force Microscopy (EFM) is essential for the quantitative analysis of experimental data. In this work, the role of the contact potential difference ( V _CPD ) between tip and substrate, both ...
Lukas Lehnert, Ronald Thoelen, Hildegard Möbius   +2 more
doaj   +1 more source

Dielectric Imaging of Fixed HeLa Cells by In-Liquid Scanning Dielectric Force Volume Microscopy

Nanomaterials, 2021
Mapping the dielectric properties of cells with nanoscale spatial resolution can be an important tool in nanomedicine and nanotoxicity analysis, which can complement structural and mechanical nanoscale measurements. Recently we have shown that dielectric
Martí Checa, Ruben Millan-Solsona, Adrianna Glinkowska Mares, Silvia Pujals, Gabriel Gomila   +4 more
doaj   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

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

Creation of Optimal Frequency for Electrostatic Force Microscopy Using Direct Digital Synthesizer

Applied Sciences, 2017
Electrostatic force microscopy (EFM) is a useful technique when measuring the surface electric potential of a substrate regardless of its topography. Here, we have developed a frequency detection method for alternating current (AC) bias in EFM.
Seunghyun Moon, Mingyu Kang, Jung-Hwan Kim, Kyeo-Reh Park, ChaeHo Shin   +4 more
doaj   +1 more source