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LRS-5 confocal Raman spectrometer
Confocal Raman Microscopy Spectrometer
Product details
-Instrument Introduction
The LRS-5 confocal Raman spectrometer is a research grade Raman testing instrument equipped with a three-dimensional automatic platform. The true confocal microscope ensures fast and accurate acquisition of fine spectral images. The LRS-5 model has optimized its optical path design to ensure high sensitivity in the market, while achieving diffraction limit in spatial resolution and ensuring high light flux of the instrument. Combined with self-developed software operating systems, the Raman testing process is made more convenient, efficient, and user-friendly.
-Product Features
üTrue confocal imaging function
High spatial resolution,Combined with a 3D automatic platform, the points, lines, surfaces, and depths of the sample can be scanned point by point to obtain spatial distribution images of the chemical structure, composition, and physical conditions of the sample
üExcellent performance
All optical components are optimized to ensure spatial and spectral resolution reaches diffraction limits. High spectral resolution can obtain fine information about the sample, such as crystallinity integrity, polycrystalline and amorphous identification, stress effects, size effects, and other features, making analysis simple and intuitive
ühigh sensitivity
Observable fourth-order peak of silicon
üLow wavenumber performance
Low wavenumber performanceIt can detect spectral ranges that are difficult to obtain in other ordinary spectrometers, thus characterizing more sample characteristic information
üHigh sensitivity detector
Low noise, high-sensitivity receiver that can achieve experimental results in a short period of time
üSoftware controlled automatic variable pinhole
Confocal pinhole automatic adjustment
üPowerful software with powerful functions
software systemSpecially designed for Raman spectroscopy, it can not only achieve ordinary spectral acquisition and processing analysis, but also realizeMapping fast automatic scanning function
Optional Raman database, including enabling rapid identification and analysis
üFlexible configuration
Modular design scheme: Different component configurations and models can be selected according to customer needs, in order to meet customer needs as much as possible and achieve high cost-effectiveness
Multi laser: Multiple excitation wavelengths can be selected,Suitable for various samples and optimized experimental results
Multi grating: Multiple gratings can be selected
üFunction Expansion
RamanAFM combined with TERS (Tip Enhanced Raman)
-Raman Spectroscopy History of Tianjin Port East Technology
1998Nian Gangdong Technology launchesLRS-2/3laser raman/Fluorescence spectrometer, used for measuring and teaching Raman and fluorescence spectra in physics and chemistry laboratories of higher education institutions
2008Nian Gangdong Technology launches the first domestic micro area laser Raman spectrometer
2009The laser Raman spectrometer of Niangang East Technology Micro Zone has passed the technical appraisal organized by Tianjin Science and Technology Commission and obtained the scientific and technological achievement appraisal certificate issued by Tianjin High tech Achievement Transformation Center
2010Hong Kong East Technology launches the first confocal Raman spectrometer in China
2011Gangdong Technology participated in the research and development of the "National Major Scientific Instrument and Equipment Development Special Project - Research and Application of Laser Differential Confocal Scanning Imaging and Detection Instruments" project
2016The "Research and Application of Laser Differential Confocal Scanning Imaging and Detection Instruments" project passed the expert group's acceptance smoothly
-Comparison between Raman Spectroscopy and Infrared Spectroscopy
(1) Due to different spectral principles, the information provided by the two spectra also varies. Some groups with high symmetry have low polarity and weak infrared absorption, but they have strong spectral bands in Raman spectroscopy, such as C-C, C=C, S-S, which are suitable for Raman spectroscopy research. Infrared spectroscopy is only suitable for determining the side and end groups of polymers, while Raman spectroscopy is more used to study the skeleton structure of polymers. Raman spectroscopy and infrared spectroscopy have a complementary relationship.
(2) When conducting Raman testing, in many cases, the sample does not need to be pre treated and can be directly tested with any form of polymer material sample. It can even be measured in a transparent container, which is particularly convenient for measuring liquid samples.
(3) The infrared absorption of water is very strong, while its Raman scattering is weak, with only a weak peak around 1640cm-1. Therefore, Raman spectroscopy is particularly suitable for the study of aqueous solutions.
-Main parameters
name |
parameter |
Measurement method |
Qualitative/semi quantitative testing |
Laser (excitation wavelength) |
532nm (633nm, 785nm expandable) |
spectral range |
50～7000cm-1 |
spectral resolution |
≤1cm-1 |
Wavelength accuracy |
≤±1cm-1 |
sensitivity |
The fourth-order peak of silicon can be observed |
spatial resolution |
X/y-axis: 0.01 μ m;Z-axis: 0.002 μ m (Related to the micro adjustment gear reduction ratio of the microscope) |
Mapping itinerary |
3 "× 2" |
CCD spectral detector size |
26.6×3.2mm |
Effective pixels |
1650×200 |
pixel size |
16×16μm |
Confocal pinhole |
50μm，150μm，200μm，400μm |
1. Surface enhancement（SERS）
rhodamine 6g
Rhodamine 6G (also known as Rose Red)6GRhodamine590Yellow light alkaline stamen fragrance red, foreign nameRhodamine 6G）It is a chemical substance with a molecular formulaC28H31N2O3ClIts characteristics are red or yellow brown powder, which dissolves in water and appears crimson with green fluorescence, and dissolves in alcohol and appears red with yellow fluorescence or yellow red with green fluorescence. It is highly harmful to the human body and other organisms.
2. Superconducting materials
Yttrium Barium Copper Oxide (YBCO)
YBCO is the first superconducting temperature77KThe above materials can be used for magnetic resonance imaging, magnetic levitation facilities, and magnets in Josephson junctions, with a superconducting transition temperature higher than the boiling point of liquid nitrogen（77K）It can be cooled using relatively inexpensive liquid nitrogen, while previously discovered superconductors require liquid helium（4.2K）Or liquid hydrogen cooling（20 K）.
YBCO is a perovskite defect type layered structure containingCuO-CuO2-CuO2-CuOAlternating layers,CuO2Layers can have deformations and wrinkles.yttriumAtoms exist in CuO2 andCuO2In the layer,BaOThe layers areCuOgiveCuO2Between the two levels.
3. Semiconductor materials
Gallium Nitride (GaN)
Gallium nitride (GaN) is a compound of nitrogen and gallium, with a direct bandgap（direct bandgap）Semiconductors, from1990Since the beginning of the year, this compound has been commonly used in light-emitting diodes, with a structure similar to wurtzite and high hardness. The energy gap of gallium nitride is very wide3.4Electron volts can be used in high-power, high-speed optoelectronic components.
Gallium Arsenide (GaAs)
Gallium arsenide (GaAs) is a compound of the elements gallium and arsenic, and it is a type of material with a sphalerite crystal structureIII - VDirect bandgap semiconductor. Gallium arsenide is used to manufacture microwave frequency integrated circuits, single-chip microwave integrated circuits, infrared light-emitting diodes, laser diodes, solar cells, and optical windows,GaAsOften used for other purposesIII-VFamily semiconductors include substrate materials such as indium gallium arsenide and aluminum gallium arsenide grown epitaxially.
4high molecular polymer
Polystyrene (PS)
Raman spectra of polystyrene
Polystyrene (PS) resin is an amorphous polymer, and the side group of the polystyrene polymer chain is the benzene ring. The random arrangement of the large volume side group is the benzene ring, which determines the physical and chemical properties of polystyrene. The symmetric respiratory vibration of cyclic compounds is often the strongest Raman band. Therefore, polystyrene（PS）The Raman spectra mainly include618cm-1，1000cm-1(Loop respiration),1029cm-1，1199cm-1，1601cm-1（C=CSeveral vibration peaks such as benzene ring.
Nylon (PA)
Raman spectra of nylon
The infrared spectra of different types of nylon are extremely similar, but the skeleton composed of different methylene sequences has strong spectral bands in Raman spectra, which are easy to distinguish from each other.
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