研究目的
Investigating the detection of terahertz (THz) power using a temperature-supersensitive capsulized cholesteric liquid crystal film based on the thermochromic and thermodiffusion effect.
研究成果
The study successfully demonstrates a new method for detecting THz power using a CCLCF, which is robust, cost-effective, and portable. The method allows for quantitative visualization of THz intensity and has potential applications in THz imaging, biological sensing, and inspection.
研究不足
The response time of the CCLCF varies with THz power, and the system requires optimization for faster detection speeds. The sensitivity and resolution of the THz power meter could be enhanced by improving the characteristics of the CLC and image analysis methods.
1：Experimental Design and Method Selection:
The experiment utilizes a temperature-supersensitive capsulized cholesteric liquid crystal film (CCLCF) to detect THz power through thermochromic and thermodiffusion effects.
2：Sample Selection and Data Sources:
The CCLCF is placed at the focal point of THz radiation, and images are captured using a smartphone camera.
3：List of Experimental Equipment and Materials:
Includes a LiNbO3 crystal for THz generation, a regeneratively amplified Ti: sapphire laser, a commercial pyroelectric detector for THz power measurement, and a smartphone camera for image capture.
4：Experimental Procedures and Operational Workflow:
THz radiation is focused onto the CCLCF, and the resulting color changes are captured and analyzed.
5：Data Analysis Methods:
The diameter of the color change area is measured and related to THz power using image analysis software.
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