Results 201 to 210 of about 2,071,972 (337)

Strained 2D Semiconductor Lateral Heterojunctions via Grayscale Thermal‐Scanning Probe Lithography

open access: yesSmall Science, EarlyView.
A novel strain‐engineering approach using grayscale thermal‐Scanning Probe Lithography tailors the optoelectronic response of 2D Transition‐Metal Dichalcogenide (TMD) layers. Nanofaceted templates control local strain in MoS2, enabling engineered carrier extraction in asymmetric Au‐MoS2 lateral heterojunction nanoarrays, as detected by Kelvin Probe ...
Giorgio Zambito   +8 more
wiley   +1 more source

Optoelectronic Interfaces for Nongenetic Modulation of Excitable Tissues

open access: yesSmall Methods, EarlyView.
This review summarizes recent advances in nongenetic optoelectronic technologies for the modulation of excitable biotissues, covering material selection, device design, and working principles, as well as characterization methods. Representative applications in in vitro and in vivo models of the cardiac, central, and peripheral nervous systems are ...
Qi Wang, Jinghua Li
wiley   +1 more source

Anomalous‐Energy Runaway Electrons Originating in Fast Ionisation Wave During Pulsed Gas Breakdown

open access: yesHigh Voltage, EarlyView.
ABSTRACT Anomalous‐energy runaway electrons (RAEs), whose energy exceeds the maximum potential difference across the discharge gap, are widely observed in various plasma phenomena. This study investigates the origination of anomalous‐energy RAEs in fast ionisation waves (FIWs) formed during pulsed gas breakdown.
Bangdou Huang   +4 more
wiley   +1 more source

Framework for X‐ray mirror surface shape fitting

open access: yesJournal of Synchrotron Radiation, EarlyView.
The closed‐form expressions for elliptic cylinders, hyperbolic cylinders, ellipsoids, hyperboloids, and diaboloids used for X‐ray mirror surface shapes are summarized. Additionally, a four‐layer framework to fit the measured surface shape data in slope or height for convenient X‐ray mirror surface characterization is proposed.For accurate ...
Lei Huang   +9 more
wiley   +1 more source

Demonstration of a family of X‐ray dark‐field retrieval approaches on a common set of samples

open access: yesJournal of Synchrotron Radiation, EarlyView.
This study aims to guide users of dark‐field imaging in selecting the most suitable technique for their imaging goals. To this end, we provide a summary table and highlight opportunities for future research into the sources of dark‐field contrast across emerging methods.There are various imaging setups capable of capturing dark‐field images, each with ...
Samantha J. Alloo   +5 more
wiley   +1 more source

Investigation on the wavefront stability of wavefront sensors

open access: yes, 2006
This dissertation mainly describes the wavefront stability of light source for the wavefront sensing systems. Several investigations on three different light sources, white light, laser diode and He-Ne laser have been carried out for two wavefront sensing systems, Hartmann and Shack-Hartmann systems.
openaire   +1 more source

3D imaging of neuronal inclusions and protein aggregates in human neurodegeneration by multiscale x‐ray phase‐contrast tomography

open access: yesBrain Pathology, EarlyView.
x‐ray phase‐contrast tomography enabled three‐dimensional, label‐free visualization and quantification of protein aggregates in neurodegenerative diseases with isotropic submicrometer resolution. The study revealed distinct electron density patterns in Lewy bodies, Hirano bodies, granulovacuolar degeneration, and amyloid plaques, highlighting their ...
Jonas Franz   +9 more
wiley   +1 more source

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