Samples were put onto glass coverslips in the form of powder. The Raman spectra were collected on single crystals from 100 to 4000 cm−1 under back scattering geometry by a LabRAM ARAMIS confocal Raman microscope (HORIBA scientific, Japan), operated at a resolution of 2 cm−1 with an excitation wavelength of 532 nm and laser power of 2.5 mW. A ×60 objective with numerical aperture of 0.75 was used to focus the sample and collect spectra for 20 s. The experiment was repeated three times for each sample and results were averaged.
Labram aramis confocal raman microscope
Manufactured by Horiba
Sourced in Japan
The LabRAM ARAMIS is a confocal Raman microscope designed for materials analysis. It provides high-resolution Raman spectroscopy measurements with a focus on sample visualization and precise spatial mapping.
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2 protocols using labram aramis confocal raman microscope
1
Raman Spectroscopy of Crystalline Samples
2
Raman Spectroscopic Characterization of Si/SiO2
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Raman spectroscopic characterization was carried out on on a Horiba LabRAM Aramis confocal Raman microscope (λexc=532 nm) with a laser spot size of ca. 1 μm, and equipped with an automated XYZ table using 0.80 NA objectives. The incident laser power was kept as low as possible to avoid structural sample damage. Spectra were obtained with a CCD array at -70 °C, and using a grating of 600 grooves per mm. Temperature-depending Raman measurements were performed in a Linkam stage THMS 600, equipped with a liquid nitrogen pump TMS94 for temperature stabilization under a constant flow of nitrogen. The measurements were carried out on Si/SiO2 substrates (300 nm oxide layer) with a heating rate of 10 K•min -1 .
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