Electrochemical needle point enhanced Raman spectrometry instrument based on scanning probe microscope

A tip-enhanced Raman and scanning probe technology, which is applied in the fields of electrochemistry, scanning probe microscopy and spectrochemistry, can solve the problems of optical path distortion, the difficulty of combining tip-enhanced Raman technology with electrochemical technology, etc. Interference, improve excitation and collection efficiency, avoid the effect of solution volatilization

Active Publication Date: 2014-06-11
XIAMEN UNIV
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the existing tip-enhanced Raman technology is difficult to combine with electrochemical technology, and to design an electrochemical tip-enhanced Raman spectroscopy instrument based on scanni

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  • Electrochemical needle point enhanced Raman spectrometry instrument based on scanning probe microscope

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the drawings. figure 1 It is a schematic diagram of the “an electrochemical needle-tip enhanced Raman spectroscopy instrument based on a scanning probe microscope” of the present invention.

[0028] Spectrometer excitation / collection module (1), reflector (2), O-ring (3), quartz window (4), objective lens (5), in-situ spectroscopic electrolytic cell (6), sample (7), Piezoelectric ceramic (8), sealed cavity (9), stepping motor (10), piezoelectric ceramic holder (11), air inlet (12), exhaust port (13), electrochemical controller (14) ), reference electrode (15), counter electrode (16), preamplifier (17), scanning probe (18), cover glass (19);

[0029] The structure of the instrument is as follows:

[0030] It includes a sealed cavity (9). The bottom of the cavity (9) is provided with a quartz window (4), a reflector (2) is provided under the quartz window (4), and a spectrum is provided next to the refle...

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Abstract

The invention discloses an electrochemical needle point enhanced Raman spectrometry instrument based on a scanning probe microscope. The electrochemical needle point enhanced Raman spectrometry instrument is characterized by comprising a scanning head of the scanning probe microscope, and an atmosphere controlled and matched in-situ spectrum electrolytic cell body which can be matched with a conventional commercial spectrometer laser collection module. The scanning head of the scanning probe microscope adopts a special design, a sample is driven to realize XYZ morphology scanning by adopting piezoelectric ceramics, and the scanning probe is fixed on the electrolytic cell still; the instrument structure is designed based on the lens of undersea glasses, so as to realize maximum excitation and collection efficiency of an electrochemical liquid; although the instrument is based on an inverted mode, the instrument can be used for researching transparent and opaque samples; and oxygen removal seal of the system is realized by adopting an isolation hood, the influence of the oxygen on the system research is avoided, solution volatilization is avoided, and an atmosphere inside a cavity can be controlled through an air inlet/outlet.

Description

Technical field [0001] The invention relates to an electrochemical needle tip enhanced Raman spectroscopy instrument based on a scanning probe microscope, belonging to the fields of electrochemistry, scanning probe microscopy and spectrochemistry. Background technique [0002] Electrochemistry (EC) is closely related to the development of materials, energy, environment, information science and even life sciences. Traditional electrochemical methods mainly measure electrode potential or current, and obtain the macroscopic average of the electrode interface. Information, it is difficult to provide the behavior of molecules on the surface from the level of molecular structure. Applying molecular spectroscopy techniques such as ultraviolet, infrared and Raman to electrochemical field research can directly obtain information on the mode of action, adsorption orientation and coverage of the electrode surface species at the molecular level. Among them, Raman spectroscopy technology, es...

Claims

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Application Information

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IPC IPC(8): G01N21/65G01Q60/60
Inventor 任斌曾智聪黄声超李茂华黄腾翔
Owner XIAMEN UNIV
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