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拉曼光譜儀

驚爆價!50萬RMB!高速大面積共聚焦拉曼成像系統Ultimate多功能(光電流+瞬態熒光+拉曼光譜)成像系統超高靈敏度共聚焦拉曼成像系統超高速顯微拉曼成像光譜儀XperRam Photocurrent光電流成像光譜系統 共聚焦顯微拉曼光譜儀樣品測試服務高性能 便攜式拉曼光譜儀 顯示全部
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超高速顯微拉曼成像光譜儀

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拉曼成像技術是新一代快速、高精度、面掃描激光拉曼技術,它將共聚焦顯微技術與激光拉曼光譜技術完美結合!

所屬類別:光譜儀器 ? 拉曼光譜儀

所屬品牌:加拿大Photon etc公司

產品負責人:

姓名:賀工(Kevin)

電話:180 1976 2603

郵箱:[email protected]


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    姓名:賀工(Kevin)

    電話:180 1976 2603

    郵箱: [email protected]

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超高速顯微拉曼成像光譜儀


RIMA激光拉曼顯微成像系統技術是新一代快速、高精度、面掃描激光拉曼技術,它將共聚焦顯微技術與激光拉曼光譜技術完美結合!


Photon etc公司RIMA拉曼成像技術是新一代快速、高精度、面掃描激光拉曼技術,它將共聚焦顯微技術與激光拉曼光譜技術完美結合,與傳統的點成像拉曼系統不同,采用面成像技術,將激光擴束后,用特殊的光學元件將擴束后的高斯分布的激光整形成均勻分布的平頂激光,照射在樣品上,濾除反射的激光后,所有激發的拉曼光和再通過可調濾波器為主的高光譜成像組件,成像在ccd上,可在幾分鐘內完成,以相元為單位,可以形成高達十萬組拉曼光譜數據。是目前市面上相對快的拉曼成像設備.

拉曼成像系統,激光拉曼成像光譜儀,拉曼光譜儀,拉曼成像高光譜,激光拉曼高光譜成像系統,激光拉曼高光譜成像儀,RAMAN imagingsystem,RAMAN spectrometer,RAMAN spectral system 

產品特點
1. 快速global mapping(非掃描式)
2. 百萬像素拉曼光譜,成像時間僅幾分鐘
3. 斯托克斯和反斯托克斯
4. 高光譜分辨率和空間分辨率


設備原理圖:




系統參數:

拉曼光譜測量范圍  

100 — 4000 cm-1

光譜分辨率  

< 6 cm-1(取決于激光器波長)

空間分辨率  

Sub-micron

顯微鏡  

Inverted

物鏡  

20x,

60x, 100x

相機  

Back-illuminated CCD camera sCMOSEMCCD

掃描速度  

250 μm2/min at full spectral range

波長準確度  

1 cm-1

激發波長  

473nm, 532nm, 660nm, 785nm或者其他波長



應用領域:


單層石墨烯鑒別

Graphene, one of the most popular allotropes of carbon, has sparked broad interest in the field of material science since it was first isolated in 2004 by Professors Geim and Novoselov (University of Manchester). Curren tly, the synthesis of large-scale graphene on copper surfaces by chemical vapor deposition (CVD) is being explored by the scientific community. Despite considerable efforts, CVD graphene in different growth conditions exhibits various morphologies such as the presence of hillocks, defects, grain boundaries and multilayer island formation, effects which researchers are attempting to mitigate. But to be able toexhaustively study the composition of these samples, hyperspectral Raman imaging was required, and was carried out on CVD monolayer graphene with bilayer islands. Raman spectroscopy is a non-destructive analysis method that provides microscopic structural information by comparing a sample’s spectrum with reference spectra. Here, we present selected results from Prof. Martel’s group at Université de Montréal obtained during the investigation of the formation of graphene multilayer islands during Chemical Vapor Deposition growth with methane as feedstock. Known Raman signatures of the different configurations of graphene were used in this study to map the number of layers of the samples.

Raman imaging was performed with the hyperspectral Raman imaging platform RIMA? based on Bragg tunable filter technology. In these measurements, a CW laser at λ = 532 nm illuminated 130 × 130 μm2 and 260 × 260 μm2 sample surface areas through 100X and 50X microscope objectives respectively. In this configuration, the sample was excited with 120 μW/μm2  and 30 μW/μm2 and the resolution was diffraction limited.

FIG. 1 (a) presents a 130 × 130 μm2 Raman map of graphene’s G band (~1590 cm-1) in three different families: monolayer graphene (blue), bilayer graphene in resonance (red) and bilayer graphene out of resonance (green). Their typical associated Raman spectra are presented in FIG. 1 (b-c). The intensity variations of the G band reveal information on the stacking of the layers. The most significant changes in intensity observed in FIG. 1 (b) can be explained by resonance resulting from the twisted angle (13.5° at λexc = 532 nm [1]) of the bilayer graphene. FIG. 1 (d-f) presents similar results as in FIG. 1 (a-c), but data were acquired from a larger area: 260 × 260 μm2. The intrinsic specificity of Raman scattering combined with global imaging capabilities allows users to assess large maps (hundreds of microns) of defects, number of layers and stacking order, etc.

 
納米材料分析

Global Raman imaging is an exceptional technique for the analysis of large surfaces of thin films and advanced materials. Its rapidity makes it a great tool not only for universities and research institutes, but also for industrial laboratories. With no or minimal sample preparation, RIMA?, Photon etc.’s new hyperspectral Raman imager, can easily take part in routine analysis, where the prompt access to information about sample composition is crucial for the development of new materials.

With systems based on point-to-point or scanning technologies, the acquisition of maps of large areas is often tedious and time consuming: the analysis of a sample may take hours. RIMA? expedites in minutes the acquisition of the whole area in the field of view, rendering full maps of a sample with unmatched rapidity. In fact, the hyperspectral cube is built image by image, along the spectral window of interest, with a spectral resolution better than 7 cm--1. Since a spectrum is recorded for each pixel, it is possible, with a 1024 x 1024 pixels camera, to collect more than one million spectra without moving the sample. Moreover, the size of the maps can be as large as 650 x 650 mm2, depending on the magnification of the objective used for the analysis. Photon etc.’s filters used for hyperspectral imaging are based on holographic gratings, and provide very high efficiency for an optimal acquisition of the weak Raman scattering. Combined with top of the line low noise CCD or EMCCD cameras, RIMA? is the most efficient Raman imaging system on the market.

In order to show the advantages of RIMA? in the analysis of nanomaterials in biological systems, carbon nanotubes (CNT) have been incubated with a sample of Candida Albicans yeast cells and exposed to a homogeneous (flat-top) laser excitation of 532 nm on the entire field of view. With a 50X objective, an area of 260 x 130 μm2 was imaged, with a step of 4.5 cm--1 and an exposition time of 15 s. The complete analysis took 20 minutes, for a total of more than 60,000 spectra.

Figure 1 shows the Raman hyperspectral cube of a portion of the imaged area containing the yeast. The monochromatic Raman images revealed the position of the aggregated yeast cells stained with the CNTs. The typical signal of CNTs (red line) confirmed their presence on the yeast cells, while in other areas the hyperspectral camera did not detect any CNT Raman signal (blue line).


Raman Multiplexing

DEVELOPMENT AND CHARACTERIZATION OF CARBON NANOTUBE BASED RAMAN NANOPROBES BY RAMAN HYPERSPECTRAL IMAGING: MULTIPLEXING AND BIODETECTION

The potential of Photon etc. Raman Imaging Platform, RIMA?, was demonstrated by Pr. R Martel’s group at Université de Montréal in a recent publication in Nature Photonics on the development of Raman nanoprobes [1].

These new kind of nanoprobes are based on single-wall carbon nanotubes and J-aggregated dyes, such as α?sexithiophene (6T), β-carotene (βcar) and phenazine (Ph). Compared to fluorescent probes, Raman probes have the advantages of being more stable over long periods of times (weeks and years) and they produce a unique signature with narrow peaks that allows easy multiplexing of 3 probes or more using the same excitation laser energy. This nanomaterial shows a very high Raman scattering cross-section, without any photobleaching or fluorescence background, even at high laser intensities.

In this work RIMA? enabled the imaging and multiplexing of three different probes with sensitivity down to the single object as seen in Figure 1.  The different probes were deposited on a SiOx/Si surface and characterized by taking a single hyperspectral image. We were able to determine, without a doubt, the position of each isolated probe (diameters: 1.3 ± 0.2 nm), and even identify the co-localized probes (Fig 1b, Ph and βcar). The sensitivity, efficiency and hyperspectral properties of RIMA? were essential to the development of these probes.

The carbon nanotube, which serves as a capsule for the probe, can be covalently functionalized to selectively target biomolecules, such as streptavidin. We demonstrated RIMA?’s potential in the detection of probes in a biological context by imaging the βcar probe functionalized with PEG-biotin groups that targeted streptavidin.

A pattern of 10 μm spots of streptavidin was created by microcontact printing and then incubated with the probes. The pattern was maintained hydrated under a cover slip during imaging and the probes were detected where streptavidin was located. Figure 2 shows Raman hyperspectral images at 1520 cm-1 of two printed surfaces, where streptavidin was deposited either inside (main figure) or around the dots (inset). With a single acquisition, a sample area of 133 x 133 μm2 was studied using RIMA? with laser excitation at 532 nm. Damages to the samples were also limited due to a uniform illumination over the portion of the sample in the field of view. In terms of spectral resolution and large surface area imaged, RIMA? provided hyperspectral images in a much shorter time then conventional point-by-point mapping Raman imagers.

Raman hyperspectral imaging is a powerful technique to study a wide range of materials, from nanopatterned surfaces to biological systems. Because of its high throughput, RIMA? allows the acquisition of spectrally resolved maps of large area samples, without damaging the surface.


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產品標簽:拉曼成像系統,激光拉曼成像光譜儀,拉曼光譜儀,拉曼成像高光譜,激光拉曼高光譜成像系統,激光拉曼高光譜成像儀,RAMAN imagingsystem,RAMAN spectrometer,RAMAN spectral system ,顯微拉曼光譜儀

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