Research in Moisture and Hydration Detection by Terahertz Time Domain Spectroscopy
太赫兹光谱技术检测水分及水合作用的研究进展
作者: 刘丽萍王煜斐张亚洲杨霏宋茂江
作者单位: 1贵州理工学院,食品药品制造工程学院,贵州 贵阳
2贵州省计量测试院,贵州 贵阳
刊名: Advances in Analytical Chemistry, 2018, Vol.08 (01), pp.1-10
中文刊名: 分析化学进展, 2018, Vol.08 (01), pp.1-10
来源数据库: Hans Pubs Journal
DOI: 10.12677/AAC.2018.81001
关键词: Terahertz
中文关键词: 太赫兹时域光谱水分成像水分检测水合作用
英文摘要: The terahertz (THz) radiation occupies a large portion of the electromagnetic spectrum between the microwave and infrared bands. It refers to the frequency between the 0.1 THz to 10 THz (the wavelength is 3 mm to 30 μm). Since it possesses many attractively characteristic properties, THz imaging and sensing technologies can provide information not available through conventional methods such as microwave and X-ray techniques. THz waves contain rich information involved in molecular vibration and rotation, and have sub-picoseconds pulse width, low photon energy, and high space-time coherence. Combined with the terahertz imaging systems of transmission type and reflection type, a general review of its application in medical applications, forestry products, agriculture/food products by using...
中文摘要: 太赫兹(Terahertz, THz)辐射,通常指的是频率在0.1 THz~10 THz (波长在3 mm~30 μm)之间的电磁波,该波段在微波和红外之间,属于远红外和亚毫米波范畴。同X射线、可见光等电磁辐射一样,可作为物体成像的光源,其成像和光谱技术可以提供微波和X射线技术所不能提供的信息。太赫兹波脉冲宽度在亚皮秒量级,光子能量和高时空相干性,包含分子转动和振动信息。本文总结了太赫兹成像技术在水分检测和水分成像中的应用,综述了太赫兹成像在医疗、林业、农业和食品中的应用、取得的成果和亟待解决的问题。同时综述了太赫兹时域光谱技术在水合作用检测中的应用,提出本实验室的研究进展。
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