相关实验视频

Updated: Jun 3, 2025

Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling

Silicon Nanowires and Optical Stimulation for Investigations of Intra- and Intercellular Electrical Coupling

Published on: January 28, 2021

雷达-太赫兹-红外相容隐形同轴银纳米线@碳纳米电缆气凝

Hualong Peng^1,2, Bo Cai^1,2, Yu Zhang^1,2

¹Center for Bioinspired Science and Technology, Hangzhou International Innovation Institute, Beihang University, Hangzhou, 311115.

Angewandte Chemie (International ed. in English)

|January 6, 2025

概括

这项研究开发了一种新的银纳米线@碳 (AgNW@C) 气凝,用于先进的多频谱隐身. 该材料有效屏蔽雷达,太赫兹和红外频率,为军事和民用用途提供强大的保护.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
电磁学电磁学电磁学电磁学

背景情况:

实现多频谱隐形 (雷达,太赫兹,红外) 是具有挑战性的,因为频段的电磁特性各不相同.
现有的材料在不同频率的综合性能方面扎.
需要用于军事伪装和电磁保护的先进材料.

研究的目的:

设计和制造一种轻量级的气凝材料,用于多频谱兼容的隐身.
为了克服频率合器在电磁波吸收和屏蔽方面的变异性的局限性.
开发一种集成材料,在雷达,太赫兹和红外频段具有强大的性能.

主要方法:

用同轴纳米电缆结构 (银纳米线芯,碳外层) 制造轻型气凝 (AgNW@C).
使用1D导电网络,异质电接口,低红外辐射的银纳米线,和气凝的3D孔结构用于隔热.
电磁波吸收,屏蔽效率和热红外隐形性能的表征.

主要成果:

在千兆赫兹频段中,AgNW@C气凝实现了-66.50 dB的最佳反射损失和8.80 GHz带宽.
在太赫兹频段中,已证明的平均总屏蔽值为71.92dB,反射损失>50.00dB.
呈现低红外辐射率 (0.28) 和高达150°C的隔热,表明有效的热红外隐形.

结论:

AgNW@C气凝成功地将多频谱隐形功能集成到一个材料中.
该材料显示出先进的军事伪装和电磁保护应用的巨大潜力.
独特的结构设计解决了频率合变化的挑战,以实现强大的隐形性能.

关键词:

气凝是一种气凝.兼容性兼容性兼容性电磁衰减是一种电磁衰减.多尺度效应多尺度效应纳米电缆结构的结构

更多相关视频

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

Published on: January 21, 2016

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

相关概念视频

Energy Stored In A Coaxial Cable

Energy Stored In A Coaxial Cable

A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic...

Types Of Superconductors

Types Of Superconductors

A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...