概括
一个可调的等离子体光子晶体 (PPC) 在微波频率方面进行了实验. 这项研究提供了对等离子体波相互作用和在通信和诊断方面的潜在应用的见解.
科学领域:
- 血物理学的等离子体物理学
- 光子学 是一个光子学.
- 电磁主义 电磁主义
背景情况:
- 等离子光子晶体 (PPC) 提供可调节的电磁性质.
- 了解不均质等离子体中的波传播对于设备应用至关重要.
研究的目的:
- 构建和实验实施一个2D可调的等离子体光子晶体 (PPC).
- 在1GHz-12GHz频率范围内研究PPC的电磁性质.
- 用实验数据验证模拟模型.
主要方法:
- 实验性制造和测试一个2D可调节的PPC.
- 微波诊断和数字模拟使用不均的等离子体管模型.
- 分析TM和TE两极分化的反应.
主要成果:
- 实验和模拟结果显示出很好的一致性.
- 局部化等离子体激发TM极化,由于等离子体不均,形成广泛的禁带.
- 观察到一个取决于事件角度的格子共振带.
- 通过平均血参数来预测TE极化切断效应.
结论:
- 在PPC中调节带可以通过调整结构或等离子体参数来控制.
- 这些发现为通信和微波设备提供了参考.
- PPC可能可以作为血参数的诊断工具.
相关概念视频
Plane Electromagnetic Waves I
3.6K
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed...
The EM field is assumed...
3.6K
Standing Waves in a Cavity
871
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
871
Propagation Speed of Electromagnetic Waves
3.3K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
3.3K
Generating Electromagnetic Radiations
2.6K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
2.6K
Electromagnetic Waves in Matter
2.9K
Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the...
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the...
2.9K
Dual Nature of Electromagnetic (EM) Radiation
1.9K
Electromagnetic (EM) radiation consists of electric and magnetic field components oscillating in planes perpendicular to each other and mutually perpendicular to radiation propagation through space. EM radiation can be classified as a wave, characterized by the properties of waves such as wavelength (denoted as λ) and frequency (represented by ν).
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
1.9K


