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相关概念视频

Nonconscious Mimicry01:13

Nonconscious Mimicry

Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.
Cell-matrix's Response to Mechanical Forces01:13

Cell-matrix's Response to Mechanical Forces

In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue. 
Anchoring junctions mechanically attach a cell to the...
Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Lenz's Law01:15

Lenz's Law

The direction in which the induced emf drives the current around a wire loop can be found through the negative sign. However, it is usually easier to determine this direction with Lenz's law, named in honor of its discoverer, Heinrich Lenz (1804–1865). Lenz's law states that the direction of the induced emf drives the current around a wire loop always to oppose the change in magnetic flux that causes the emf.
If a bar magnet is moved toward a coil such that the magnetic flux through the coil...
Sensory Functions of the Skin01:16

Sensory Functions of the Skin

The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:

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相关实验视频

Updated: Jul 3, 2026

Fabricating Metamaterials Using the Fiber Drawing Method
11:57

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

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敏捷隐身:生物灵感的超材料与持续的动态调.

Gang Wang1, Dawei Li1, Wenhe Liao1

  • 1School of Mechanical Engineering (SME), Nanjing University of Science and Technology (NJUST), 200 Xiao Ling Wei Road, Nanjing, 210094, China.

Advanced materials (Deerfield Beach, Fla.)
|September 17, 2025
PubMed
概括

这项研究介绍了一种生物灵感的超材料,用于先进的隐身,实现超宽带吸收和动态频率调节. 可重新配置的设计使智能隐形系统的自适应式雷达截面减少.

科学领域:

  • 材料科学 材料科学 材料科学
  • 电磁学 电磁学 电磁学 电磁学
  • 纳米技术纳米技术

背景情况:

  • 在超材料中实现同时高效率的宽带吸收和频率敏捷性对于先进的隐身至关重要.
  • 现有的超材料往往难以平衡宽带吸收与可调频率选择性.

研究的目的:

  • 引入一种生物启发的可重新配置的超材料,具有新的动态结构-功能设计.
  • 克服当前超材料在实现隐形应用的双模式性能方面的局限性.

主要方法:

  • 一个生物灵感设计模仿眼形态与机械传输系统控制内部花结构.
  • 几何重新配置以积极重塑表面阻抗.
  • 整合编码的驾驶,用于2D控制频率和振幅.

主要成果:

  • 超宽带吸收率 (≥90%) 在2-40 GHz频谱中.
  • 连续调整至少六个不同的,高效率 (≥99%) 吸收峰值,每个带宽>3 GHz.
  • 显著的宽带雷达截面 (RCS) 减少和特定频率的自适应性抑制.

结论:

  • 开发的超材料表现出卓越的双模式性能,使宽带吸收和动态频率灵活性成为可能.
关键词:
适应式雷达横截面的截面灵感来自于生物学.连续调 连续调可重新配置的元材料.超宽带吸收超宽带的吸收.

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  • 这种生物启发的可重新配置的超材料为智能和高性能自适应隐形系统铺平了道路.
  • 动态结构功能设计为先进的电磁应用提供了一个新的范式.