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Types of Reversible Electrodes

Types of Reversible Electrodes

For electrode reversibility to be maintained, all the reactants and products involved in the half-reaction must be present at the electrode. There are several types of reversible electrodes (half-cells).In metal-metal-ion electrodes, a metal balances electrochemically with a solution of its own ions. Examples are Cu2+|Cu and Zn2+|Zn. Metals that react with the solvent, like group 1 and most group 2 metals, which react with water, and zinc, which reacts with aqueous acidic solutions, cannot be...

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相关实验视频

Updated: Jun 27, 2026

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Published on: September 23, 2018

基于石墨烯-二氧化瓦纳的多功能2位编码可重新配置的元表面.

Binggang Xiao, Zhonghua Wei, Panpeng Ge

|June 10, 2024

概括

这项研究引入了一种石墨烯-二氧化瓦尼超表面,可以控制太赫兹波束并吸收太赫兹波. 温度变化可以在反射束控制和吸收之间切换,提供了一种多功能设备.

科学领域:

超材料和纳米光子学
特拉赫兹 (THz) 技术技术
凝聚物质物理学凝聚物质物理学

背景情况:

可重新配置的超表面为电磁波提供动态控制.
石墨烯和二氧化瓦纳是可调节电子和光学性能的有希望的材料.

研究的目的:

提出并演示基于石墨烯-二氧化的可重新配置的超表面单元结构.
为了实现2位编码,精确控制反射的太赫兹波的相位.
为了能够在光束控制和太赫兹吸收功能之间切换.

主要方法:

利用石墨烯费米能量的变化进行2位编码,实现90度相差.
研究使用1位编码的多束反射调制.
应用卷积定理对单光束反射控制在2位模式.
利用二氧化瓦纳的绝缘状态进行太赫兹吸收.

主要成果:

通过使用2位石墨烯编码,证明了具有90°相差的四个反射单元.
通过1位编码确认了多束反射波的调制.
在2位模式下通过元表面和卷积定理实现了单束反射波控制.
通过利用二氧化的绝缘状态,将结构转化为太赫兹吸收器.

更多相关视频

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

相关实验视频

Last Updated: Jun 27, 2026

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Published on: September 23, 2018

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

结论:

拟议的超表面提供了作为反射束控制器和太赫兹吸收器的双重功能.
二氧化瓦纳的温度诱导相位过渡允许在功能之间无切换,而无需重新设计设备.
与1位系统相比,2位编码的元表面提供了增强的单束调节功能,增加了设备的多功能性.