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相关概念视频

Estimation of the Physical Quantities01:05

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On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...
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In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
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Amperometry: Overview01:10

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Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...
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Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
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Mass Analyzers: Overview01:13

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The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
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The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
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相关实验视频

Updated: Jul 24, 2025

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基于PSHE的多重物理量Janus元结构传感器

Junyang Sui1, Jie Xu1, Aowei Liang1

  • 1College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing 210023, China.

Sensors (Basel, Switzerland)
|July 11, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了利用光子自旋霍尔效应 (PSHE) 实现多功能物理量检测的Janus元结构传感器 (JMS). 传感器展示了增强的准确性和更广泛的检测范围跨多个尺度.

关键词:
雅努斯的超级结构就是雅努斯.超级结构的元结构.光子旋转的霍尔效应物理量检测检测物理量检测

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科学领域:

  • 超材料和纳米光子学
  • 光学传感技术的技术
  • 凝聚物质物理学 凝聚物质物理学

背景情况:

  • 传统传感器通常具有单一功能的局限性.
  • 不对称的结构可以打破平价性,从而实现独特的物理性质.
  • 光子旋转霍尔效应 (PSHE) 为旋转依赖的光操纵提供了潜力.

研究的目的:

  • 提出和演示一个多功能Janus元结构传感器 (JMS).
  • 为了利用光子旋转霍尔效应 (PSHE) 提高传感能力.
  • 为了能够以更高的精度和范围检测多个物理量.

主要方法:

  • 一个具有不对称的介电排列的Janus元结构的设计.
  • 利用光子旋转霍尔效应 (PSHE) 通过石墨烯增强移位峰值.
  • 从前向和后向方向分析电磁波 (EW) 的发生.

主要成果:

  • 该JMS成功地检测了折射率,厚度和入射角度.
  • 前进发生率:检测范围为22.4 (RIU),22.35μm (厚度),27°47° (角度),灵敏度为81.35°/RIU,64.84°/μm,0.02238 THz/°.
  • 逆向发生率:检测范围为22.09 (RIU),1.852.02μm (厚度),20°40° (角度),灵敏度为99.3°/RIU,70.07°/μm,0.02348 THz/°.

结论:

  • 雅努斯元结构传感器 (JMS) 提供了多功能传感能力.
  • 传感器对前向和后向电磁波的发生表现出不同的传感特性.
  • 这种JMS为各种应用提供了单一功能传感器的有希望的替代方案.