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Mid-infrared optical frequency comb-based Fourier transform spectrometer for broadband molecular spectroscopy 期刊论文  OAI收割
CHINESE JOURNAL OF CHEMICAL PHYSICS, 2024, 卷号: 37
作者:  
Cheng, Feihu;  Zhao, Weixiong;  Fang, Bo;  Yang, Nana;  Li, Shuangshuang
  |  收藏  |  浏览/下载:5/0  |  提交时间:2024/11/20
Enhanced Degradability of the Apatite-Based Calcium Phosphate Cement Incorporated with Amorphous MgZnCa Alloy 期刊论文  OAI收割
ACS BIOMATERIALS SCIENCE & ENGINEERING, 2023, 卷号: 9, 期号: 11, 页码: 6084-6093
作者:  
Wan, Ye;  Ma, Haoxiang;  Ma, Zheng;  Tan, Lili;  Miao, Lei
  |  收藏  |  浏览/下载:11/0  |  提交时间:2024/01/07
基于衬底集成空心波导的气体检测性能研究 期刊论文  OAI收割
量子电子学报, 2023, 卷号: 40
作者:  
黄文彪;  方勇华;  刘家祥;  司赶上;  李振钢
  |  收藏  |  浏览/下载:7/0  |  提交时间:2024/11/20
Design and analysis of medium wave infrared miniature static Fourier transform spectrometer 期刊论文  OAI收割
Acta Physica Sinica, 2018, 卷号: 67, 期号: 6, 页码: 11
作者:  
Wang, H. L.;  Lu, J. G.;  Liang, J. Q.;  Liang, Z. Z.;  Qin, Y. X.
  |  收藏  |  浏览/下载:22/0  |  提交时间:2019/09/17
Simulation and experiment of the static FTIR based on micro multi-step mirrors (EI CONFERENCE) 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, May 24, 2011 - May 26, 2011, Beijing, China
作者:  
Liang Z.-Z.;  Zhang J.;  Zhang J.;  Zhang J.;  Zhu W.-B.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
In recent years  Fourier transform spectrometer (FTS) with small size and low mass is required in many applications with growing need for real-time and small platform spectral detection. In this paper  a micro Fourier transform infrared spectrometer (FTIR) based on spatial modulation mode was designed. This spectrometer has the advantages of high stability and simplified configuration. It also promises optical path differences (OPD) with high precision  as MOEMS technology is used in manufacturing the key components. The simulation and the experiments with regard to this FTIR configuration have been done. Firstly  the diffraction effect of the micro multi-step mirrors (MMSMs) is studied. We discuss the influence to the reversed spectrum by different mirror widths and different diffraction distances. Secondly  we simulate and analyze the influence of the source solid angle to the spectral resolution. Thirdly  we set up the theoretical model of the collimation error which is mainly from the defocus of the optical system and analyze the result caused by the collimation error. Fourthly  a new discrete Fourier transform arithmetic using least-squares cosines progression (LSCP) is proposed which can reconstruct the spectrum with nonuniform sampled signals. Finally  the MMSMs are fabricated used the MOEMS technology and the structural parameters are tested. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).  
Design and demonstration of micro multi-step mirrors and light source in micro FTIR (EI CONFERENCE) 会议论文  OAI收割
6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011, February 20, 2011 - February 23, 2011, Kaohsiung, Taiwan
Liang Z.; Fu J.; Feng C.; Liang J.
收藏  |  浏览/下载:43/0  |  提交时间:2013/03/25
To obtain high resolution  high signal-to-noise ratio (SNR)  high reliability and real time in wide spectral range  we study the space modulation Micro Fourier Transform Spectrometer (FTS) based on multi-step mirrors covering the spectral range of 3-5m and 8-12 m in theory and experiment. The influences of spectrum reconstruction caused by the diffraction and extended light source in Fourier Transform Infrared Spectrometer (FTIR) are analyzed. A method to reduce the noises in spectrum reconstruction and the relationship between coherent intensity and solid angle of light source are discussed. An extended light source with suitable size is chosen  considering the requirement of SNR and spectrum resolving power in the optical design. Furthermore  the fabrication of micro multi-step mirrors  which is the core part of FTS  is investigated. Three methods for fabricating multi-step micro mirrors are demonstrated. 2011 IEEE.  
The study on the near infrared spectrum technology of sauce component analysis (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Li S.;  Wang C.;  Chen X.;  Chen X.;  Chen X.
收藏  |  浏览/下载:36/0  |  提交时间:2013/03/25
The author  Shangyu Li  engages in supervising and inspecting the quality of products. In soy sauce manufacturing  quality control of intermediate and final products by many components such as total nitrogen  saltless soluble solids  nitrogen of amino acids and total acid is demanded. Wet chemistry analytical methods need much labor and time for these analyses. In order to compensate for this problem  we used near infrared spectroscopy technology to measure the chemical-composition of soy sauce. In the course of the work  a certain amount of soy sauce was collected and was analyzed by wet chemistry analytical methods. The soy sauce was scanned by two kinds of the spectrometer  the Fourier Transform near infrared spectrometer (FT-NIR spectrometer) and the filter near infrared spectroscopy analyzer. The near infrared spectroscopy of soy sauce was calibrated with the components of wet chemistry methods by partial least squares regression and stepwise multiple linear regression. The contents of saltless soluble solids  total nitrogen  total acid and nitrogen of amino acids were predicted by cross validation. The results are compared with the wet chemistry analytical methods. The correlation coefficient and root-mean-square error of prediction (RMSEP) in the better prediction run were found to be 0.961 and 0.206 for total nitrogen  0.913 and 1.215 for saltless soluble solids  0.855 and 0.199 nitrogen of amino acids  0.966 and 0.231 for total acid  respectively. The results presented here demonstrate that the NIR spectroscopy technology is promising for fast and reliable determination of major components of soy sauce.