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相关概念视频

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

323
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
323

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相关实验视频

Updated: Jul 13, 2025

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
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一种双响应的液晶弹性体,用于多级加密和暂时信息显示.

Hong-Qin Wang1, Yuqi Tang2, Zi-Yang Huang1

  • 1State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, China.

Angewandte Chemie (International ed. in English)
|October 11, 2023
PubMed
概括

新的液晶弹性体 (LCE) 提供简单,低能耗的双模加密,以实现高信息安全性. 这些材料还允许使用应变或温度刺激进行可重写的实时显示.

关键词:
双响应式 双响应式信息显示 信息显示器液晶弹性体是一种液晶弹性体.多级加密多级加密.透明度 过渡 过渡

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相关实验视频

Last Updated: Jul 13, 2025

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科学领域:

  • 材料科学 材料科学 材料科学
  • 信息安全 信息安全
  • 聚合物化学 聚合物化学

背景情况:

  • 对于先进的信息安全解决方案的需求日益增长.
  • 通过简单的低能耗加密方法实现高安全性的挑战.
  • 需要用于防伪和数据保护的多功能材料.

研究的目的:

  • 开发应变/温度反应的液晶弹性体 (LCE).
  • 为了实现双模态,多层次的信息加密.
  • 为了实现实时,可重写的短暂信息显示.

主要方法:

  • 多域LCE的合成,具有不同度的长链灵活间隔器.
  • 在应变和温度下,LCE的光学特性 (不透明到透明过渡) 的表征.
  • 用光热效应将LCE与多壁碳纳米管 (MWCNT) 进行集成.

主要成果:

  • 在LCE中,从不透明到透明状态的变化取决于应变/温度.
  • 使用LCE墨水加密的信息在特定的应变/温度条件下是可解密的,从而实现多层次的安全性.
  • 使用近红外 (NIR) 光和MWCNT增强的LCE,可以实现可重复的短暂显示.

结论:

  • 已开发的LCE为先进的信息加密提供了一个多功能平台.
  • 这些材料通过双模,多层加密机制提供高安全性.
  • 该研究提出了一种用于可重写的短暂显示器的新方法,具有潜在的广泛应用.