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相关概念视频

Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

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Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
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相关实验视频

Updated: Jan 14, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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多模式,多频段和多重防伪设备具有角度依赖结构颜色,对温度高度敏感.

Gang Li1,2,3,4, Shancheng Wang5, Huaxu Liang3

  • 1Wuhan Institute of Photochemistry and Technology, Wuhan 430083, P. R. China.

Research (Washington, D.C.)
|October 27, 2025
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概括

这项研究引入了一种新型的热敏磁性光子晶体水凝膜,用于先进的防伪. 这种材料提供多式光学性能和取决于温度的颜色变化,以提高安全性.

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Last Updated: Jan 14, 2026

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Published on: September 25, 2020

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Dual-mode Imaging of Cutaneous Tissue Oxygenation and Vascular Function
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科学领域:

  • 材料科学 材料科学 材料科学
  • 光学是什么?光学是什么?光学是什么?
  • 纳米技术纳米技术

背景情况:

  • 传统的防伪方法面临着与复杂的假冒技术相比的局限性.
  • 现有的设备提供有限的加密信息,并与高级功能作斗争.

研究的目的:

  • 开发一种简单的解决方案,用于制造具有多式联络,多频段和多个光学特性的防伪设备.
  • 创建一个使用热敏磁性光子晶体水凝膜的设备.

主要方法:

  • 制造一个热敏的磁性光子晶体水凝膜.
  • 在现场用化学物质将薄膜固定在修饰玻璃上.
  • 用带和单面的氧化物玻璃密封设备.

主要成果:

  • 该设备在可见到长波红外光谱中表现出明显的光学反应 (反射,传输,发射).
  • 可调整的结构色在可见光谱 (红色到蓝色) 基于温度.
  • 高灵敏度 (11.5 nm/0.1 °C) 在温度依赖的颜色变化中具有稳定的可重复性.

结论:

  • 开发的设备为高端防伪应用提供了一个有前途的解决方案.
  • 多式联网和多带光学特性增强了安全功能.
  • 热敏性质提供了一个动态和可验证的安全元素.