Results 211 to 220 of about 1,007,951 (256)

Fiber Bragg Grating Force Sensors for Minimally Invasive Surgery: State of the Art, Challenges, and Opportunities

open access: yesSmartBot, EarlyView.
This article reviews the application of fiber Bragg grating (FBG) technology for precise force sensing in minimally invasive surgery. It outlines the fundamental working principles and algorithms used to interpret sensor data. The text surveys clinical applications across various medical fields, such as ophthalmology and vascular intervention (Table of
Shiyuan Dong   +9 more
wiley   +1 more source

Microfluidic Capillary Arrays for Pixelated Control of Multimaterial Flows

open access: yesSmall, EarlyView.
A 3D‐printed pixellated capillary array maps up to thousands of fluid inputs into arbitrary multimaterial flow cross‐sections. Automated manifold design and laminar scaling are used to amplify printing resolution orders of magnitude, generating microscale fluidic control from printed elements, enabling designed microflows for potential use in ...
Max Chapman   +2 more
wiley   +1 more source

Fingerprinting Superconductors by Disentangling Andreev and Quasiparticle Currents Across Tunable Tunnel Junctions

open access: yesSmall, EarlyView.
Tunneling Andreev reflection spectroscopy leverages the exponential sensitivity of tunneling current to distinguish between a variety of superconducitng order parameters. Here it is shown that the additivity of excess decay rate enables clear separation of Andreev and quasiparticle currents, fingerprinting the existence of sign changing superconducting
Petro Maksymovych   +4 more
wiley   +1 more source

Overcoming Imaging Limitations: 4D‐STEM Pair Distribution Function for Resolving Structure of Supported Pt55 and Pt200 Clusters

open access: yesSmall Methods, EarlyView.
4D‐STEM based electron diffraction analysis has been developed to characterize the average structure of sensitive, dynamic ultrasmall supported Pt clusters at variable temperature by pair distribution analysis (PDF). For Pt55 and Pt200 the best fit is obtained for a multiply twinned decahedral configuration.
Ajai Raj Lakshmi Nilayam   +5 more
wiley   +1 more source

Multi‐level fatigue reliability assessment of reinforced concrete railway bridges

open access: yesStructural Concrete, EarlyView.
Abstract This paper presents a multi‐level reliability framework for assessing the fatigue life of reinforced concrete (RC) railway trough bridges subjected to cyclic loading. The framework incorporates increasing levels of analytical complexity and real‐world data in four steps. First, an analytical model applies S–N curves and the Palmgren–Miner rule
Silvia Sarmiento   +7 more
wiley   +1 more source

Deformation and strength of grouted sleeve connectors in pre‐fabricated concrete structures: Mechanisms and analytical modeling

open access: yesStructural Concrete, EarlyView.
Abstract Grouted sleeve connectors (GSCs) are widely used in precast/prefabricated concrete structures. To ensure force transfer, connectors are often overdesigned in length. This practice has an unintended consequence of reducing the plastic deformation capacity of the connection region and hence the displacement ductility of the precast structure as ...
Hongning Ye, Yong Lu
wiley   +1 more source

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