A Horiba Labram HR Evolution confocal Raman spectrometer at 532 nm was used to obtain resonance Raman spectra and films transferred to BaF2, CaF2, or SiO2/Si substrates. The films were transferred from the LB trough using multiple dip cycles under high pressure. This made a narrow optically thick band spanning a few to less than one mm across the face of the substrate. To prevent spectral contamination from degradation products low laser power was used (2.5%) with a shoot-and-move data collection procedure. Full laser power applied for tens of seconds led to detectable damage to the film and was avoided.
Labram hr evolution confocal raman spectrometer
Manufactured by Horiba
Sourced in France, Japan
The Labram HR Evolution is a confocal Raman spectrometer designed and manufactured by Horiba. It is a high-resolution instrument capable of performing Raman spectroscopy analysis.
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4 protocols using labram hr evolution confocal raman spectrometer
1
Resonance Raman Characterization of Thin Films
2
Raman Analysis of Iron Coke Structure
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The Raman
structure analysis of the iron coke was performed by using a LabRAM
HR Evolution confocal Raman spectrometer (HORIBA Jobin Yvon S.A.S.)
with a charge-coupled device (CCD) detector. The Raman spectrum was
recorded in the wavenumber range of 1800–800 cm–1 under an excitation wavelength of 325 nm. Furthermore, the Raman
spectrum was decomposed to obtain the corresponding structural peak.19 (link) Based on the peak division method proposed by
Li et al.,20 (link) the Raman spectrum with the
band of 1800–800 cm–1 was decomposed into
10 superposition peaks. For the components of each substance in the
Raman spectrum, the relative peak intensities can provide information
about their relative quantities.
structure analysis of the iron coke was performed by using a LabRAM
HR Evolution confocal Raman spectrometer (HORIBA Jobin Yvon S.A.S.)
with a charge-coupled device (CCD) detector. The Raman spectrum was
recorded in the wavenumber range of 1800–800 cm–1 under an excitation wavelength of 325 nm. Furthermore, the Raman
spectrum was decomposed to obtain the corresponding structural peak.19 (link) Based on the peak division method proposed by
Li et al.,20 (link) the Raman spectrum with the
band of 1800–800 cm–1 was decomposed into
10 superposition peaks. For the components of each substance in the
Raman spectrum, the relative peak intensities can provide information
about their relative quantities.
3
Crystallinity Analysis of 3NA Nanocrystals
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Crystallinity and crystallographic orientation of 3NA nanocrystals inside the electrospun fibers was studied by X-ray diffraction. The diffraction pattern using θ–2θ scans was recorded between 10°and 60° on a Philips PW-1710 X-ray diffractometer with Cu-Kα radiation of wavelength 1.5406 Å. The lattice planes parallel to the substrate surface were determined from the reciprocal lattice vector of modulus (2/λ)sin θ, with λ the radiation wavelength and θ the Bragg angle. Raman spectroscopy was carried out on a LabRAM HR Evolution confocal Raman spectrometer (Horiba Scientific, France) using Horiba Scientific's Labspec 6 Spectroscopy Suite Software for instrument control, data acquisition and processing. The Raman spectra was obtained using a laser excitation with wavelength 532 nm, at 0.1% laser intensity, with 30 s acquisition time in a spectral range between 50–1750 cm−1.
4
Raman Spectroscopy of Surfactant Samples
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Raman spectroscopy was performed on a LabRAM HR Evolution Confocal Raman Spectrometer (HORIBA) equipped with the LabSpec6 software package (HORIBA, Japan). Dried surfactant samples (10 mg) were dissolved in 100 µL of deionized water. Then 6 µL of each dissolved sample was pipetted onto a clean CaF2 Raman-grade slide and placed in the drying oven at 40 °C for 1.5 min to evaporate off the deionized water. The samples were analyzed using a 100× objective with an NA of 0.9, and a 532 nm laser with 45 mW of power. The laser was operated at between 1–10% for three accumulations of 10 s for each spectrum. Measurements were recorded using a 600 nm grating. Spectra were fitted with a fourth-degree polynomial line for baseline subtraction. The LabSpec6 fourth-degree data smoothing function was used to reduce the noise-to-signal ratio of the measurements.
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