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Portable surface-enhanced Raman spectrometer and measuring method thereof

A surface-enhanced Raman and spectrometer technology, applied in the field of enhanced Raman spectroscopy, can solve the problems of complex sample introduction process, bulky, unsuitable for on-site rapid detection, etc., to increase collection efficiency, enhance Raman signal, improve Effect of measurement efficiency and measurement sensitivity

Inactive Publication Date: 2018-10-30
MINZU UNIVERSITY OF CHINA
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Problems solved by technology

At present, Raman spectrometers are mainly used in optical aspects such as scientific research institutes, physical and chemical laboratories of colleges and universities, biology and medical fields, to study the determination and confirmation of material components. Such Raman spectrometers are bulky and the sampling process is complicated. Not suitable for on-site rapid detection

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  • Portable surface-enhanced Raman spectrometer and measuring method thereof
  • Portable surface-enhanced Raman spectrometer and measuring method thereof
  • Portable surface-enhanced Raman spectrometer and measuring method thereof

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Embodiment Construction

[0035] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.

[0036] Such as figure 1As shown, the portable surface-enhanced Raman spectrometer of this embodiment includes: a laser, a white light source, an optical fiber Raman probe, a miniature spectrum analyzer, a three-dimensional mobile platform and a computer; wherein, the sample 11 is placed on a sample stage on the surface of the three-dimensional mobile platform; The optical fiber Raman probe includes an auxiliary focusing optical path, a Raman measurement optical path, a dichroic mirror 9 in the visible light band, and a microscope objective lens 10. The auxiliary focusing optical path includes a lens 13, an imaging lens 15, a digital camera 16, and a spectroscopic flat film 14. Raman measurement The optical path includes an input optical fiber 1, a laser collimator mirror 2, a notch filter 3, a Raman filter 7, a laser coupler 6, an output o...

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Abstract

The invention discloses a portable surface-en hanced Raman spectrometer and a measuring method thereof. A Raman signal is generated by Raman measurement of a light path; the microstructure of the surface of a sample is obtained by a white light path, and light path focus situation is determined; the surface of the sample is enabled to be right at the position of the focus of a microobjective by moving a three-dimensional platform, the surface of the sample can be clearly imaged and is the best position for laser focus, the strongest Raman signal is acquired, and the best effect to stimulate and collect the Raman signal is achieved. Raman measurement is performed by assist of an SERS (surface enhanced Raman Scattering) substrate which is specifically designed and is good in surface enhancement effect and high in uniformity by the aid of the surface enhance Raman effect, the Raman signal is enhanced to a great extent, and measurement efficiency and measure flexibility are improved; traceelements can be analyzed in the field rapidly, the application range of the portable Raman spectroscopy technology is broadened, and feasibility is provided for rapid and accurate measurement of thetrace components in the field.

Description

technical field [0001] The invention relates to an enhanced Raman spectrum analysis technology, in particular to a portable surface-enhanced Raman spectrometer and a measurement method thereof. Background technique [0002] Raman spectroscopy is an analytical technique based on the interaction of light and materials, which can pass through transparent or translucent packaging materials, non-contact, non-destructive direct detection and analysis of samples. Applications in medicine and cosmetics, geology and mineralogy, carbon materials, semiconductor materials, life sciences and other fields have been perfected and highly affirmed. With the development of science and technology and the mutual intersection, penetration and integration of many frontier disciplines, a series of requirements such as high resolution, miniaturization, anti-vibration and anti-interference have been put forward for the application requirements of Raman spectroscopy. [0003] The Raman spectrometer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/65G01N21/658G01N2021/655
Inventor 张谷令方浩邹斌王义全冯帅
Owner MINZU UNIVERSITY OF CHINA
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