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相关概念视频

Photoluminescence: Applications01:14

Photoluminescence: Applications

463
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
463

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多模式响应循环极化发光安全材料

Qi Guo1, Mingjiang Zhang1, Zhi Tong1

  • 1Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, Hefei230026, China.

Journal of the American Chemical Society
|February 1, 2023
PubMed
概括

研究人员使用循环偏光 (CPL) 材料开发了先进的防伪标签. 这些新的安全材料为全球打击假冒提供了多模式响应,不可破解的身份验证.

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科学领域:

  • 材料科学
  • 光电子产品
  • 纳米技术

背景情况:

  • 伪造对全球经济构成重大威胁,需要先进的认证方法.
  • 目前的光学安全标记缺乏复杂性,并且由于决定性生产而容易被模仿.
  • 需要复杂的防伪标签,具有独特的光学特性和复杂的安全功能.

研究的目的:

  • 开发用于先进的防伪应用的新型稳定圆极发光材料.
  • 创建具有增强身份验证能力的多模式响应性安全材料 (MRSM).
  • 展示一个类似区块链的集成系统来安全地加密和解密信息.

主要方法:

  • 设计无机量子点 (QD) 和液晶的螺旋组合,以创建CPL材料.
  • 制造具有六种刺激响应模式的多模式响应安全材料 (MRSM).
  • 将安全材料封装成纤维,用于智能织品.

主要成果:

  • 在CPL材料中取得了0.39的优点 (FM),满足了实际的防伪需求.
  • 开发了具有六种不同的刺激响应模式的MRSM (光,极化,温度,电压,压力,视角).
  • 展示了一种类似区块链的互动信息加密/解密系统.
  • 根据环境变化创造出智能织品.

结论:

  • 开发的CPL材料和MRSM为强大的多模式防伪提供了有前途的解决方案.
  • 综合系统为信息身份验证提供了一个安全且可适应的平台.
  • 智能织品的应用为智能材料和安全功能开辟了新的途径.