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相关概念视频

Load along a Single Axis01:29

Load along a Single Axis

In structural engineering, the analysis of beams subjected to varying loads is a critical aspect of understanding the behavior and performance of these structural elements. A common scenario involves a beam subjected to a combination of different load distributions.
Consider a beam of length L subjected to a varying load, which is a combination of parabolic and trapezoidal load distribution along the x-axis. In this case, it is essential to determine the resultant loads, their locations, and...
Simple Trusses01:21

Simple Trusses

A truss is a structural framework consisting of slender members connected at joints, designed to support external loads while minimizing material usage and weight. Simple trusses are a type of planar truss where all members lie within a single two-dimensional plane.
The most basic planar truss is a simple truss with three members arranged in a triangular formation. This triangular truss is inherently stable and rigid due to its geometry, making it an ideal starting point for creating more...
Space Trusses01:25

Space Trusses

A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads.
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
Space Trusses: Problem Solving01:29

Space Trusses: Problem Solving

A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
Design of Prismatic Beams for Bending01:23

Design of Prismatic Beams for Bending

The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and stress...
Trapezoidal Rule01:26

Trapezoidal Rule

Estimating the distance traveled by a vehicle using its recorded velocity over time is a common problem in physics and engineering. When velocity data is available at discrete time intervals, rather than as a continuous function, numerical integration methods such as the trapezoidal rule are often employed to approximate the total displacement.The trapezoidal rule works by dividing the total time interval into several equal segments. Within each segment, the recorded velocities at the endpoints...

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带形镜合的SPR是一种形镜.

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    一种新的梯形镜增强了表面等离子体共振 (SPR) 系统的商业可行性. 这种设计简化了组装,并改善了微型化,用于敏感的生化传感应用.

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    科学领域:

    • 光电学是指光电子产品.
    • 生物医学工程 生物医学工程
    • 纳米技术 纳米技术

    背景情况:

    • 传统的基于三角镜的表面等离子体共振 (SPR) 系统提供稳定性和高灵敏度.
    • 然而,三角镜的光学属性的局限性阻碍了SPR微型化和精确的光路调节.
    • 这就需要探索替代镜设计,以提高SPR系统的性能.

    研究的目的:

    • 开发一个镜合的SPR系统,使用梯形镜作为合元件.
    • 增强SPR系统设计,以简化调节,组装和光学配置.
    • 评估新的SPR生物化学传感系统的性能和潜力.

    主要方法:

    • 一个新的SPR系统被设计和建造,使用专门的梯形镜.
    • 对SPR系统性能进行实验性表征,包括共振深度和折射率灵敏度.
    • 通过免疫球蛋白G结合动力学分析,验证系统适用于生物化学传感.

    主要成果:

    • 梯形镜SPR系统显示,折射率的灵敏度为3465nm/RIU.
    • 该系统表现出高稳定性,相对标准偏差为0.1020%.
    • 通过免疫球蛋白G结合动力学成功验证了生物化学传感能力.

    结论:

    • 开发的梯形镜SPR系统提供了一个结构简单,紧,易于调节的配置.
    • 该系统实现了高灵敏度和稳定性,使其适用于实际的SPR应用.
    • 这种设计为开发下一代小型化和实用的SPR生物传感平台提供了宝贵的见解.