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相关概念视频

MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
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相关实验视频

Updated: Jun 11, 2025

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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具有可编程功能的数字机械元材料.

Wanqing Lin1, Yingbo Yan1, Siwei Zhao1

  • 1Laboratory for Multiscale Mechanics and Medical Science, SV LAB, School of Aerospace, Xi'an Jiaotong University, Xi'an, 710049, China.

Advanced materials (Deerfield Beach, Fla.)
|October 4, 2024
PubMed
概括
此摘要是机器生成的。

研究人员通过编程数字状态来控制材料属性来开发数字机械超材料 (DMM). 这一创新使得可定制的功能,如信息加密和适应性能量吸收.

关键词:
数字机械元材料 (DMM) 是一种数字机械元材料.数字结构财产关系信息的加密信息的加密.多种变形模式的多种变形模式可编程功能的可编程功能.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程
  • 超材料是指一种超材料.

背景情况:

  • 数字化正在彻底改变信息获取,超越了物理限制.
  • 材料结构与属性关系是复杂的,高维的,非线性的.
  • 编程这些关系为新的功能提供了潜力.

研究的目的:

  • 介绍数字机械元材料 (DMM) 的概念.
  • 展示编程数字状态如何解结构和物业设计.
  • 探索DMM可以实现的各种功能.

主要方法:

  • 以数字位表示曲线束的二进制稳定状态.
  • 设计具有三种不同的变形反应的单元电池:压缩-扭曲合 (CTC),压缩-剪切合 (CSC) 和纯压缩 (PC).
  • 数字编程一系列的DMM以实现所需的材料行为.

主要成果:

  • 一个DMM单元细胞表现出三种独特的变形模式,具有明显的运动和刚性.
  • 可编程的DMM能够实现广泛的功能.
  • 实现的功能包括信息加密,定制的应力应变反应,能量吸收,振动隔离和可调的力传输.

结论:

  • 开创了一种使用数字机械元材料的多功能材料设计范式.
  • 脱结构和物业设计,以提高功能可编程性.
  • 为设计具有前所未有的自由度的智能机械超材料开辟了新的途径.