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相关概念视频

Internal Loadings in Structural Members: Problem Solving01:28

Internal Loadings in Structural Members: Problem Solving

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When designing or analyzing a structural member, it is important to consider the internal loadings developed within the member. These internal loadings include normal force, shear force, and bending moment. Engineers can ensure that the structural member can support the applied external forces by calculating these internal loadings.
To illustrate this, let's consider a beam OC of 5 kN, inclined at an angle of 53.13° with the horizontal and supported at both ends. Determine the internal...
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Structural Isomerism02:34

Structural Isomerism

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Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN−...
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Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

66
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
66
Composite Masonry Walls01:18

Composite Masonry Walls

557
Composite masonry walls combine multiple wythes of the same or different masonry materials to create a unified structure. These walls feature wythes that are bonded together either through mortar-filled collar joints, grouted spaces, or more commonly, with rigid metal ties and reinforcements, with the use of masonry header units being rare. Metal ties are preferred because they effectively minimize water penetration, as these walls primarily absorb moisture and then release it into the...
557
Bending of Members Made of Several Materials01:08

Bending of Members Made of Several Materials

133
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
133
Structural Classification of Joints01:20

Structural Classification of Joints

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Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...
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相关实验视频

Updated: May 20, 2025

Visualizing Visual Adaptation
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Visualizing Visual Adaptation

Published on: April 24, 2017

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在动态结构色彩中克服白色,黑色和充满活力的色调之间的结构不兼容性

Yumin Lee1, Youngji Kim1, Minji Kim1

  • 1Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, South Korea.

Small (Weinheim an der Bergstrasse, Germany)
|March 24, 2025
PubMed
概括

这项研究引入了一种用于动态结构色彩的新方法,使用有序纳米结构使黑色和白色一起实现生动的色调. 它通过可逆铜电沉积来实现这一目标,为先进的彩色显示提供了一条新的途径.

关键词:
双重突破是一种突破交叉两极化的交叉两极化动态的结构颜色 动态的结构颜色可逆的金属电极位置.白色结构颜色是白色的结构颜色.

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相关实验视频

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Visualizing Visual Adaptation
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科学领域:

  • 材料科学 材料科学 材料科学
  • 光学是什么?光学是什么?光学是什么?
  • 纳米技术 纳米技术

背景情况:

  • 传统的白色和黑色结构色彩依赖于无序的结构,与有序的设计冲突,以获得充满活力的颜色.
  • 将黑白与动态,充满活力的结构色彩相结合, presents一个重要的设计挑战.

研究的目的:

  • 通过使用可以在白色,黑色和其他色调之间切换的有序纳米结构来演示动态反射色彩策略.
  • 通过使动态的黑白与充满活力的色彩一起克服当前结构色彩方法的局限性.

主要方法:

  • 使用可逆的铜 (Cu) 电沉积在纳米格的隙内.
  • 观察交叉极化反射以解决因格子双断裂而产生的颜色.
  • 电化学调节Cu厚度以控制双折射及其与光子和近等离子共振的相互作用.

主要成果:

  • 从有序的纳米结构中实现了白色,黑色,蓝色和色之间的动态切换.
  • 通过控制Cu厚度来证明选择性激活,混合和消除双断层.
  • 成功地将动态黑白功能集成到结构色彩系统中.

结论:

  • 开发的战略为与有序纳米结构相兼容的动态白色和黑色结构色彩提供了一条可行的途径.
  • 这项工作解决了无序的黑白和有序的充满活力的结构颜色之间的结构差异.
  • 为先进的动态彩色显示器和可调光学设备铺平了道路.