Spectroscopy and Spectral Analysis, Volume. 40, Issue 12, 3736(2020)
Separation of Tire Rubber Overlapping Terahertz Spectra Using Non-Negative Matrix Factorization of Spectral Feature Constraints
Fig. 1. Schematic diagram of THz-TDS system
Laser: Laser source; M1—M14: Reflector; A1—A4: Diaphragm; HWP: Half wave plate; CBS: Cube beamspllitters; Chopper: Optical chopper; L1—L3: ConVex lens; PM1—PM4: Off-axis parabolic mirror; QWP: Quarter wave plate; WP: Wollaston prism; Detector: Pulse detector
Fig. 3. THz absorbance spectrum of nine different concentration mixtures
(a): Binary system; (b): Ternary system
Fig. 4. A plot of relative contribution versus factor number by PCA
(a): Binary system; (b): Ternary system
Fig. 5. Best resolved spectra of binary system extracted by CNMF
(a): NBR; (b): MBT
Fig. 6. Best resolved spectra of ternary system extracted by CNMF
(a): NBR; (b): MBT; (c): TMTM
|
|
|
|
Get Citation
Copy Citation Text
Xian-hua YIN, Yu LIU, Mu-lin FENG, An LI, Wei MO. Separation of Tire Rubber Overlapping Terahertz Spectra Using Non-Negative Matrix Factorization of Spectral Feature Constraints[J]. Spectroscopy and Spectral Analysis, 2020, 40(12): 3736
Category: Research Articles
Received: Nov. 7, 2019
Accepted: --
Published Online: Jun. 18, 2021
The Author Email: Xian-hua YIN (yxh4417@guet.edu.cn)