Articles with "limit" as a keyword



Determination of lower radiation dose limit for automatic measurement of adipose tissue

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Published in 2023 at "Journal of Applied Clinical Medical Physics"

DOI: 10.1002/acm2.13958

Abstract: Abstract The purpose of this study was to determine the lower limit of radiation dose required to measure visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) volumes when a fat quantification and noise reduction… read more here.

Keywords: dose limit; lower radiation; limit; adipose tissue ... See more keywords

Large‐Scale and Wide‐Gamut Coloration at the Diffraction Limit in Flexible, Self‐Assembled Hierarchical Nanomaterials

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Published in 2021 at "Advanced Materials"

DOI: 10.1002/adma.202108013

Abstract: Unveiling physical phenomena that generate controllable structural coloration is at the center of significant research efforts due to the platform potential for the next generation of printing, sensing, displays, wearable optoelectronics components, and smart fabrics.… read more here.

Keywords: coloration; diffraction limit; large scale; limit ... See more keywords

Approaching the External Quantum Efficiency Limit in 2D Photovoltaic Devices

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Published in 2022 at "Advanced Materials"

DOI: 10.1002/adma.202206122

Abstract: 2D transition metal dichalcogenides (TMDs) are promising candidates for realizing ultrathin and high‐performance photovoltaic devices. However, the external quantum efficiency (EQE) and power conversion efficiency (PCE) of most 2D photovoltaic devices face great challenges in… read more here.

Keywords: limit; quantum efficiency; photovoltaic devices; external quantum ... See more keywords

Overcoming the Outcoupling Limit of Perovskite Light‐Emitting Diodes with Artificially Formed Nanostructures

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Published in 2022 at "Advanced Materials"

DOI: 10.1002/adma.202207180

Abstract: The external quantum efficiency (EQE) of state‐of‐the‐art planar‐structure perovskite light‐emitting diodes (PeLEDs) is mainly limited by the outcoupling efficiency, which is around 20% and decreases significantly with the perovskite thickness. Here, an approach to artificially… read more here.

Keywords: limit; emitting diodes; outcoupling limit; light emitting ... See more keywords

Vertical‐Structure Overcomes the Strain Limit of Stretchable Organic Electrochemical Transistors

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Published in 2024 at "Advanced Materials"

DOI: 10.1002/adma.202413951

Abstract: Intrinsically stretchable organic electrochemical transistors (IS‐OECTs), utilizing organic mixed ionic‐electronic conductors (OMIECs) as their channel materials, have drawn great attention recently because of their potential to enable seamless integration between bioelectronic devices and living systems.… read more here.

Keywords: stretchable organic; limit; vertical structure; organic electrochemical ... See more keywords

Nanowire Solar Cell Above the Radiative Limit

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Published in 2020 at "Advanced Optical Materials"

DOI: 10.1002/adom.202001636

Abstract: A lossless solar cell operating at the Shockley–Queisser limit generates an open circuit voltage (Voc) equal to the radiative limit. At Voc, the highly directional beam of photons from the sun is absorbed and subsequently… read more here.

Keywords: limit; solar cell; nanowire solar; radiative limit ... See more keywords

Sub 10 nm Bilayer Bi 2 O 2 Se Transistors

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Published in 2019 at "Advanced Electronic Materials"

DOI: 10.1002/aelm.201800720

Abstract: DOI: 10.1002/aelm.201800720 quest in the next decade.[1–4] However, Moore’s law has approached its physical limit because silicon FETs scaling down to 10 nm gate length especially for the sub 5 nm node is difficult to… read more here.

Keywords: limit; channel; carrier mobility; performance ... See more keywords

On the Mean‐Field Limit of Consensus‐Based Methods

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Published in 2024 at "Mathematical Methods in the Applied Sciences"

DOI: 10.1002/mma.70343

Abstract: Consensus‐based optimization (CBO) employs a swarm of particles evolving as a system of stochastic differential equations (SDEs). Recently, it has been adapted to yield a derivative free sampling method referred to as consensus‐based sampling (CBS).… read more here.

Keywords: consensus; consensus based; limit; mean field ... See more keywords

Resolution limit of cylinder diameter estimation by diffusion MRI: The impact of gradient waveform and orientation dispersion

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Published in 2017 at "Nmr in Biomedicine"

DOI: 10.1002/nbm.3711

Abstract: Diffusion MRI has been proposed as a non‐invasive technique for axonal diameter mapping. However, accurate estimation of small diameters requires strong gradients, which is a challenge for the transition of the technique from preclinical to… read more here.

Keywords: diffusion; orientation dispersion; limit; resolution limit ... See more keywords

A computational homogenization approach for limit analysis of heterogeneous materials

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Published in 2017 at "International Journal for Numerical Methods in Engineering"

DOI: 10.1002/nme.5561

Abstract: Summary The macroscopic strength domain and failure mode of heterogeneous or composite materials can be quantitatively determined by solving an auxiliary limit analysis problem formulated on a periodic representative volume element. In this paper, a… read more here.

Keywords: homogenization; limit; limit analysis; problem formulated ... See more keywords

Topology Optimization of Elastoplastic Structure Based on Shakedown Strength

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Published in 2024 at "International Journal for Numerical Methods in Engineering"

DOI: 10.1002/nme.7627

Abstract: The traditional approach to structural lightweight optimization design, which is based on the elastic limit rule, often results in a structure that exhibits either weight redundancy or strength redundancy to some extent. This study introduces… read more here.

Keywords: limit; stress; topology optimization; topology ... See more keywords