Spectrum Reconstruction of a Spatially Modulated Fourier Transform Spectrometer Based on Stepped Mirrors

Gao, Jianhua; Liang, Zhongzhu; Liang, Jing; Wang, Weibiao; Lü, Jin-guang; Qin, Yuxin

doi:10.1177/0003702816669729

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…Fourier transform infrared spectroscopy (FTIR) can provide important information on the molecular structure of components of polymeric materials and it is widely used for geological samples [72][73][74]. The mechanism of the FTIR technique is related to transitions between quantized vibrational energy states [72,75]. The FTIR spectra were recorded over the range of 400-4000 cm −1 with 64 scans and a resolution of 4 cm −1 on a 660-IR instrument (Agilent, Santa Clara, CA, USA).…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

et al. 2021

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Blending lignin as the second most abundant polymer in Nature with nanostructured compounds such as dendritic polymers can not only add value to lignin, but also increase its application in various fields. In this study, softwood Kraft lignin/polyamidoamine dendritic polymer (PAMAM) blends were fabricated by the solution electrospinning to produce bead-free nanofiber mats for the first time. The mats were characterized through scanning electron microscopy, Fourier transform infrared (FTIR) spectroscopy, zeta potential, and thermogravimetry analyses. The chemical intermolecular interactions between the lignin functional groups and abundant amino groups in the PAMAM were verified by FTIR and viscosity measurements. These interactions proved to enhance the mechanical and thermal characteristics of the lignin/PAMAM mats, suggesting their potential applications e.g. in membranes, filtration, controlled release drug delivery, among others.

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Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

et al. 2021

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“…5. The two-dimensional interferogram should be reprocessed to obtain a one-dimensional interferogram for reconstruction of the spectrum, and this is called dimension reduction [22]. Choosing an interference-image point corresponding to a certain phase-modulation unit (m, n), we set the central pixel coordinate as (j m , k n ).…”

Section: Spectrum-reconstruction Processingmentioning

confidence: 99%

Medium-Wave Infrared Static Fourier Transform Spectrometer Based on Micro-Optical Elements

Chen

Zhao

et al. 2021

IEEE Access

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In recent years, various fields have established an urgent need for real-time online measurement of infrared spectra. To this end, reducing the weight and size of infrared spectrometers is particularly important. This paper reports a micro-optical element static Fourier transform spectrometer (MOESFTS) with a working wavelength from 3.7 µm to 4.8 µm. This spectrometer is entirely composed of micro-optical elements, and its interference system comprises stepped micromirrors and a lightweight beam splitter to realize a lightweight, miniaturized instrument capable of static real-time spectrum measurements. We establish a field-of-view integral model of the interference-image point intensity to analyze the influence of the field of view on the reconstructed spectrum. A prototype was designed and constructed, its micro-optical elements and systems were optimized, and spectral calibration was completed. The spectra of acetonitrile (CH 3 CN) and carbon dioxide (CO 2 ) were measured, and the peak drift errors were found to be less than 0.18%. Our experimental results show that the MOESFTS system can be used for real-time online spectrum measurements of liquids and gases.

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“…Fourier transform infrared spectroscopy (FTIR) can provide important information on the molecular structure of components and has been used mainly for chemical characterization of geological samples recently [65][66][67]. The mechanism of the FTIR technique is related to transitions between quantized vibrational energy states [65,68]. The FTIR spectra were recorded over the range 400-4000cm -1 with 64 scans and the resolution of 4 cm -1 .…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 99%

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

Akbari¹,

Bahi²,

Farahani³

et al. 2020

Preprint

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Blending lignin as the second most abundant polymer in nature with nanostructured compounds such as dendritic polymers will not only add value to lignin, but also increase its application in various fields. In this study, softwood Kraft lignin/polyamidoamine dendritic polymer (PAMAM) blends were fabricated by solution electrospinning method to produce bead-free nanofiber mats. The mats were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), zeta potential, and thermogravimetry analysis (TGA). The chemical intermolecular interactions between lignin functional groups and abundant amino groups in PAMAM were investigated by FTIR and viscosity measurement. These interactions enhanced the mechanical and thermal characteristics of lignin/PAMAM mats, providing further potential applications at industry level.

show abstract

Spectrum Reconstruction of a Spatially Modulated Fourier Transform Spectrometer Based on Stepped Mirrors

Cited by 5 publications

References 26 publications

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

Medium-Wave Infrared Static Fourier Transform Spectrometer Based on Micro-Optical Elements

Fabrication and Characterization of Lignin/Dendrimer Electrospun Blended Fiber Mats

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