Journals >Journal of Infrared and Millimeter Waves
Contents
2009
Volume: 28 Issue 6
20 Article(s)
Export citation format
Research Article
ELECTRIC CHARACTERISTICS OF LANGMUIR BLODGETT FERROELECTRIC POLYMERS FILM：HIGH PYROELECTRIC COEFFICIENT AND LOW DIELECTRIC CONSTANT
LIU Pu-Feng, WANG Jian-Lu, TIAN Li, MENG Xiang-Jian, and CHU Jun-Hao
The relative dielectric constant ε′ and pyroelectric coefficient p of ferroelectric poly(vinylidene fluoride-trifluoroethylene) polymers P(VDF-TrFE) films grown on flexible substrates by Langmuir-Blodgett (LB) technique were measured, and room temperature figure of merit was obtained as 1.4 Pa^-1/2 at 1kHz. The result The relative dielectric constant ε′ and pyroelectric coefficient p of ferroelectric poly(vinylidene fluoride-trifluoroethylene) polymers P(VDF-TrFE) films grown on flexible substrates by Langmuir-Blodgett (LB) technique were measured, and room temperature figure of merit was obtained as 1.4 Pa^-1/2 at 1kHz. The result implies that LB P(VDF-TrFE) copolymer films are potential materials for pyroelectric detectors. This enhancement of figure of merit could be attributed to good crystallinity and highly planar ordered molecular chains in the LB films..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 401 (2009)
IMPROVING THE PERFORMANCE OF EXTENDED WAVELENGTH InGaAs PHOTODETECTORS BY USING DIGITAL GRADED HETEROINTERFACES SUPERLATTICE
WANG Kai, ZHANG Yong-Gang, GU Yi, LI Cheng, LI Hao-Si-Bai-Yin, and LI Yao-Yao
The materials of extended wavelength InxGa1-xAs photodetectors (50% cut-off wavelength of 2.4μm at room temperature) with three different structures were grown by using gas source molecular beam epitaxy (GSMBE) and were processed into mesa type photodetectors. Surface morphology, x-ray diffraction rocking curve and phoThe materials of extended wavelength InxGa1-xAs photodetectors (50% cut-off wavelength of 2.4μm at room temperature) with three different structures were grown by using gas source molecular beam epitaxy (GSMBE) and were processed into mesa type photodetectors. Surface morphology, x-ray diffraction rocking curve and photolnminescence measurements show that the quality of materials is obviously improved by using digital graded superlattice at the InAlAs/InGaAs heterointerfaces . The dark current at reverse bias of 10mV for the 300μm-diameter mesa type photodetectors without digital graded superlattice is 0.521μA at room temperature, however it is reduced to 0.480μA for photodetectors with digital graded superlattice. Besides, the growth of an InP buffer layer between InP substrate and InxAl1-xAs linear graded buffer layer is also beneficial to the material quality and device performance..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 405 (2009)
STUDY ON THE SPECTROSCOPIC ELLIPSOMETRY OF La0.5Sr0.5CoO3 FILMS PREPARED AT DIFFERENT SUBSTRATE TEMPERATURES
LI Wen-Wu, LI Ya-Wei, HU Zhi-Gao, ZHU Zi-Qiang, and CHU Jun-Hao
pulsed laser deposition; La0.5Sr0.5CoO3 films; spectroscopic ellipsometry; optical constant; (LSCO) conductive metal oxide films were prepared on Si (100) suhstrates under different growth temperatures by using pulsed laser deposition (PLD). X-ray diffraction (XRD) analysis shows that the crystallinity of the LSCO filmpulsed laser deposition; La0.5Sr0.5CoO3 films; spectroscopic ellipsometry; optical constant; (LSCO) conductive metal oxide films were prepared on Si (100) suhstrates under different growth temperatures by using pulsed laser deposition (PLD). X-ray diffraction (XRD) analysis shows that the crystallinity of the LSCO films increases with the increase of substrate temperature, and the films deposited at 650℃ and 700℃ are polycrystalline with a single perovskite phase. The optical properties of the LSCO films were measured by spectroscopic ellipsometry in the wavelength range of 400 - 1100nm. Double Lorentz oscillator dispersion relation and a three layer model (Air/ LSCO/Si) were used to fit the optical constants of the films. The results show that the refractive index of the LSCO films decreases as the substrate temperature increases. Extinction coefficient of the LSCO films increases as the substrate temperature increases in the visible and near-infrared wavelength range. It is found that the crystallinity of the films and conductivity are mainly responsible for these phenomena..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 410 (2009)
NARROWBAND INFRARED EMITTER BASED ON ONE-DIMENSIONAL PHOTONIC CRYSTALS USED FOR GAS SENSING
LIANG Hua-Feng, LAI Jian-Jun, PENG Zhong-Liang, YI Xian, and ZHOU Zhi-Ping
Based on one-dimensional photonic crystals, a narrowband quasi-coherent infrared thermal emitter with the central wavelength corresponding to the infrared absorption peak of CO2 was designed. Its central wavelength, emissivity and full width at half maximum (FWHM) are 4.23 μm, 〉 99% and 49.9nm, respectively. Transfer mBased on one-dimensional photonic crystals, a narrowband quasi-coherent infrared thermal emitter with the central wavelength corresponding to the infrared absorption peak of CO2 was designed. Its central wavelength, emissivity and full width at half maximum (FWHM) are 4.23 μm, 〉 99% and 49.9nm, respectively. Transfer matrix method (TMM) and finite difference time domain method (FDTD) were used to analyze and simulate this infrared thermal emitter respectively. The results obtained by theory calculations and simulated spectral property are consistent. So the feasibility of this kind of narrowband thermal emitter is verified..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 414 (2009)
EFFECTS OF POLISHING ON THE PERFORMANCES OF Pb1-xGexTe THIN-FILMS DEPOSITED ON SI SUBSTRATE
ZHANG Su-Ying, LI Bin, XIE Ping, and LIU Ding-Quan
The influences of different polishing methods (mechanical, chemical etching method or chemical/mechanical) on the characteristics of Pb1-xGexTe thin films deposited on Si substrate were studied. It is found that Pb1-xGexTe thin films deposited on Si substrates which are polished by chemical/mechanical polishing (SiO2 oThe influences of different polishing methods (mechanical, chemical etching method or chemical/mechanical) on the characteristics of Pb1-xGexTe thin films deposited on Si substrate were studied. It is found that Pb1-xGexTe thin films deposited on Si substrates which are polished by chemical/mechanical polishing (SiO2 or Cr^＋ colloid) have a denser structure and flat interface, and they have also a deposition rate of 7% or 18% greater than those deposited on the surfaces of Si substrates polished by chemical etching for the directions of 〈 111 〉 and 〈 100 〉, respectively. Moreover, this thin film has a higher refractive index than those deposited on the surfaces of Si substrates polished by chemical etching, and the refractive index increases with the decrease of temperature. At low temperature, the refractive index increases with the increasing of wavelength. The change of refractive index for the substrates polished by chemical etching is greater than that for the substrates polished by chemical/mechanical one. The crystal structure, composition and element depth-profile of Pb1-xGexTe thin film remain unchanged after surface is polished by mechanical polishing, while optical transmission of this thin film is increased, and extinction coefficient and refractive index are decreased..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 418 (2009)
CLASSIFYING THE SPECIES OF EXOPALAEMON BY USING VISIBLE AND NEAR INFRARED SPECTRA WITH UNINFORMATIVE VARIABLE ELIMINATION AND SUCCESSIVE PROJECTIONS ALGORITHM
WU Di, WU Hong-Xi, CAI Jing-Bo, HUANG Zhen-Hua, and HE Yong
Using visible-near infrared spectra to classify different species of exopalaemon was studied. Successive projections algorithm (SPA) combined with uninformative variable elimination (UVE) were used to select effective wavelengths from visible and near infrared (Vis-NIR) bands. The selected effective wavelengths were seUsing visible-near infrared spectra to classify different species of exopalaemon was studied. Successive projections algorithm (SPA) combined with uninformative variable elimination (UVE) were used to select effective wavelengths from visible and near infrared (Vis-NIR) bands. The selected effective wavelengths were set as inputs of least square-support vector machine (LS-SVM) for the classification of three typical exopalaemon species, namely, E. carincauda, E. modestus and E. orientis. Kennard-Stone algorithm was used to select 150 samples for calibration and the remaining 50 samples for prediction. Twelve effective wavelengths were selected by UVE-SPA, and they were 392,431,517, 551,595, 627, 676, 734, 760, 861, 943 and 1018 nm. The correct rate is 92.00% for classifying samples in prediction set by LS-SVM model based on these twelve effective wavelengths. The overall results demonstrate that it is feasible to utilize Vis-NIR spectroscopy to classify different species of exopalaemon, and UVE-SPA can extract the most effective wavelengths to build the LS-SVM model with an optimal classification result..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 423 (2009)
OPTICAL IMAGING CHARACTERISTICS OF A NEW LIQUID CRYSTAL LENS
LI Hui, ZHANG Xin-Yu, ZHANG Tian-Xu, and SHEN Xu-Bang
A new circular hole pattern electrode liquid crystal (LC) lens was proposed, which used the polyimide film to replace the glass as an isolation layer. This LC lens has a 2mm clear aperture, and it can operate at as low as 1.1Vrms controlled voltage. A model, for which the explanation of LC lens was different from the tA new circular hole pattern electrode liquid crystal (LC) lens was proposed, which used the polyimide film to replace the glass as an isolation layer. This LC lens has a 2mm clear aperture, and it can operate at as low as 1.1Vrms controlled voltage. A model, for which the explanation of LC lens was different from the traditional one, was proposed by combining geometrical optics with the theory of LC. Then the theoretical formulas of focal length and phase retardation were obtained. The focal length is from 20mm to 480mm tested in the range from 1.1Vrms to 20Vrms the value of which is close to the theoretical value. The modulation transfer function of LC lens was also studied. It is found that the imaging characteristics are proportional to the controlled voltage. As the voltage increases, the imaging characteristics also enhance..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 428 (2009)
EFFECTS OF EXTERNAL OPTICAL FEEDBACK ON THE OSCILLATING CHARACTERISTICS OF 980 nm VERTICAL-CAVITY SURFACE-EMITTING LASERS
ZHANG Xing, NING Yong-Qiang, SUN Yah-Fang, CUI Jin-Jiang, ZHANG Yan, LIU Guang-Yu, LI Zai-Jin, QIN Li, LIU Yun, WANG Li-Jun, CUI Da-Fu, and XU Zu-Yan
The effects of external optical feedback (OFB)on the oscillating characteristics of 980nm vertical-cavity surface-emitting lasers (VCSEL) were investigated. The OFB sensibility of VCSEL and edge emitting lasers (EEL) were evaluated by calculating OFB parameters. Based on the compound cavity theory, the effects of exterThe effects of external optical feedback (OFB)on the oscillating characteristics of 980nm vertical-cavity surface-emitting lasers (VCSEL) were investigated. The OFB sensibility of VCSEL and edge emitting lasers (EEL) were evaluated by calculating OFB parameters. Based on the compound cavity theory, the effects of external optical feedback on the oscillating characteristic parameters of VCSEL, such as the threshold current and the differential quantum efficiency, were analyzed. The experimental results indicate that the threshold current of the VCSEL decreases from 0.63A to 0.59A when the feedback ratio is 10%. Meantime, the slope efficiency and the output power also decrease. The result of experiment is in goad agreement with the calculation..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 432 (2009)
APPLICATION OF RECURSIVE MIXED LEAST SQUARES TO NONUNIFORMITY CORRECTION IN INFRARED FOCAL PLANE ARRAYS
LIU Yong-Jin, ZHU Hong, and ZHAO Yi-Gong
The advantage of nonuniformily correction algorithm based on recursive least squares(RLS) in IRFPA lies in its low computational complexity and memory, requirements, which makes it easy to meet the need of projects. However, RLS is not suitable for the real algorithmic model completely since the noise parameter fitted The advantage of nonuniformily correction algorithm based on recursive least squares(RLS) in IRFPA lies in its low computational complexity and memory, requirements, which makes it easy to meet the need of projects. However, RLS is not suitable for the real algorithmic model completely since the noise parameter fitted in RLS exists severe deviations. Thus, a novel nonuniformity correction algorithm based on reeursive mixed least squares (RMLS) was developed. In this new algorithm, RLS was substituted by RMLS for monuniformity correction. This proposed algorithm not only has all the ad- vantages of RLS, but also gets more excellent results in estimation precision and convergent speed. The experimental results also demonstrate the effectiveness of the algorithm..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 436 (2009)
INFRARED BACKGROUND CLUTTER SUPPRESSION ALGORITHM OF ADAPTIVE REGULARIZATION BASED ON MRF
WANG Da-Bao, LIU Shang-Qian, KOU Xiao-Ming, and HONG Ming
Aiming at the difficulty in detecting infrared(IR) dim small target under strong background clutter, the process of background suppression was attributed to the reconstruction of the target signal from the original IR dim small target image. Thus, a novel adaptive regularization filtering algorithm based on Markov randAiming at the difficulty in detecting infrared(IR) dim small target under strong background clutter, the process of background suppression was attributed to the reconstruction of the target signal from the original IR dim small target image. Thus, a novel adaptive regularization filtering algorithm based on Markov random field(MRF) model was proposed. In our algorithm, the prior probability model of the IR dim small image was established by MRF, and a new potential function was introduced according to the roughness of the IR image. On this basis, the adaptive anisotropic filtering effect for background clutter suppression was realized by regularizing the process of background clutter suppression with MRF. Theoretical analysis and experimental results show that this algorithm can adjust the operator adaptively according to the local texture distribution character of the image. Thus, the target was enhanced and strong background clutter was eliminated. The proposed algorithm can improve the signal-to-noise ratio (SNR) of the image obviously with the advantage of its logical structure simple to be implemented in real-time system..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 440 (2009)
MULTIMODAL IR 3-D TARGET TRACKING BASED ON NON-UNIFORM SAMPLING
WANG Song-Wei, LI Yan-Jun, and ZHANG Ke
Aiming at the tracker failure problem induced by target pose changes during IR 3-D target tracking, a multimodal method based on non-uniform sampling was presented. Firstly, several prototype views were used to represent 3-D target, the corresponding prototype shapes were regarded as the multimodal shape representationAiming at the tracker failure problem induced by target pose changes during IR 3-D target tracking, a multimodal method based on non-uniform sampling was presented. Firstly, several prototype views were used to represent 3-D target, the corresponding prototype shapes were regarded as the multimodal shape representation, and the transition probability matrix between these prototype shapes was established. Then, under the frame of particle filtering, the reference target models were defined as the log-polar transformed prototype views＇ gray distribution features. By sampling the shape transition probability, the transfer and propagation of the sample＇ s shape state were achieved. The method improves the robustness of the tracker to target pose＇ s change. Meanwhile, log-polar transform possessing the non-uniform sampling characteristics can suppress target＇s scale and rotate deformation, and decrease the computation burdens. Simulation results show that the proposed method can track 3-D targets effectively..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 445 (2009)
NEW ALGORITHM OF MULTISCALE TEXTURE IMAGE SEGMENTATION BASED ON CONTOURLET TRANSFORM
LIU Guo-Ying, QIN Qian-Qing, WANG Lei-Guang, MEI Tian-Can, and ZHANG Fei-Yan
A new feature extraction method, finite texture mixture pattern (FTMP), was proposed inspired by the basic idea of pattern-based texture analysis methods. FTMP was a two-tuplet set, which could be obtained by clustering methods. Firstly, the multi-scale and multi-direction variations were calculated based on the ContouA new feature extraction method, finite texture mixture pattern (FTMP), was proposed inspired by the basic idea of pattern-based texture analysis methods. FTMP was a two-tuplet set, which could be obtained by clustering methods. Firstly, the multi-scale and multi-direction variations were calculated based on the Contourlet transform. Secondly, these variation information at different scale and in different direction were clustered into groups respectively. The centers and their corresponding proportion made up FTMP, which reflected the primary information＇s variations of different scales and different directions. Such a feature extraction method made full use of the idea of pattern-based method, but avoided the complicated parameter estimation and expression computation. Thus a supervised multi-scale texture image segmentation algorithm based on Contourlet transform-CFTMPseg was proposed based on FTMP, and its effectiveness was proven by quantitative and qualitative experiments..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 450 (2009)
PALMPRINT RECOGNITION BASED ON DISCRETE CURVELET TRANSFORM AND SUPPORT VECTOR MACHINE
XU Xue-Bin, ZHANG De-Yun, ZHANG Xin-Man, and CAO Yang-Jie
A muhiscale palmprint recognition method based on discrete curvelet transform and support vector machine was proposed. First, all palmprint images were decomposed by using discrete curvelet transform via wrapping. As a result, curvelet coefficients in different scales and various angels were obtained. The important feaA muhiscale palmprint recognition method based on discrete curvelet transform and support vector machine was proposed. First, all palmprint images were decomposed by using discrete curvelet transform via wrapping. As a result, curvelet coefficients in different scales and various angels were obtained. The important feature information of palmprint was ineluded in the low frequency coefficients of curvelet transform decomposition coefficients. After the decomposition coeffi- cients were transformed into feature vectors, they were regarded as feature parameters and sent into SVM for training. Finally, SVM was used for classification of palmprint. The experiments were performed in the PolyU Palmprint database. The results indicate that the proposed method has better performance than wavelet-based method and other classical methods..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 456 (2009)
GEOMETRIC ANALYSIS OF SINGLE SAR REMOTE SENSING IMAGE POSITIONING
XING Shuai, XU Qing, HE Yu, and LAN Chao-Zhen
The iterative positioning method (IPM) based on digital elevation model (DEM) is an important way in object positioning or map revision with single remote sensing image. The geometry principle of synthetic aperture radar (SAR)- IPM has not been clear so far. In this study, the iterative calculation process of SAR-IPM wThe iterative positioning method (IPM) based on digital elevation model (DEM) is an important way in object positioning or map revision with single remote sensing image. The geometry principle of synthetic aperture radar (SAR)- IPM has not been clear so far. In this study, the iterative calculation process of SAR-IPM was analyzed by using geometry theory based on distant projection of SAR image. Two known variables, slope obliquity and incidence angle of initial position, were chosen to derive the approximate convergence criterion and the convergence speed function. It is found that slope obliquity and incidence angle are leading factors for the convergence and convergence speed of SAR-IPM. Experiment results with simulated data and real data have proved that the approximate convergence criterion is accurate and reasonable, and the convergence speed function is correct. The result will help to analyze the geometry relation between the SAR image point and the corresponding ground point..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 461 (2009)
CHANGE DETECTION FOR SAR IMAGES BASED ON JOINT-CLASSIFICATION OF BI-TEMPORAL IMAGES
LI Jin-Ji, JIAO Li-Cheng, ZHANG Xiang-Rong, and YANG Dong-Dong
Since the classical post-classification comparison(PCC) technique was affected hy a significant cumulative error and high classification precision was needed for single image, a change-detection method based on joint-classification of bi-temporal SAR images was presented according to the correlation of the unchanged inSince the classical post-classification comparison(PCC) technique was affected hy a significant cumulative error and high classification precision was needed for single image, a change-detection method based on joint-classification of bi-temporal SAR images was presented according to the correlation of the unchanged information in different temporal images. The proposed method took gray-levels as an input. The similarity of gray-levels relating to two pixels at the corresponding position for bi-temporal images was obtained through similarity operator. Then the global threshold value of similarity was got, which was used to control the joint-classifier based on K-means to classify the bi-temporal images. Finally, The change-detection map was produced by comparing with both classified images. Experimental results confirm that the proposed method not only improves the precision of classification for single image but also accurately classifies the unchanged geographical information in different temporal images into the same class. The proposed method reduces the influence of the cumulative error and improves the performance of change detection..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 466 (2009)
IMAGE ACCELERATION RESTORATION ALGORITHM FOR TURBULENCE-DEGRADED IMAGES BASED ON SUPPORT VECTOR MACHINE
LI Ming, and YANG Jie
Because of the complicated mechanisms of atmospheric turbulence, it is difficult for existing image restoration algorithms to achieve a good balance between restoration efficiency and quality. A technique for the acceleration of support vector machine based image restoration algorithm was presented to solve this probleBecause of the complicated mechanisms of atmospheric turbulence, it is difficult for existing image restoration algorithms to achieve a good balance between restoration efficiency and quality. A technique for the acceleration of support vector machine based image restoration algorithm was presented to solve this problem. In this algorithm, variance threshold was applied to assist sample selection. Since redundant information was discarded by means of the sample selection algo- rithm, training samples became more effective. Meanwhile, a real-time model updating algorithm was applied to speed up the restoration rate of serial images. Comparisons of the acceleration method with the previously proposed restoration algo-rithm on electric arc wind-tunnel images were provided. Experimental results show that the proposed acceleration method runs faster and performs better. It can effectively restore the turbulence-degraded images from strong noise, energy attenuation, blur and jitter..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 472 (2009)
NEW ALGORITHM FOR SPECTRAL MIXTURE ANALYSIS BASED ON FISHER DISCRIMINANT ANALYSIS：EVIDENCE FROM LABORATORY EXPERIMENT
CHEN Xue-Hong, WANG Sheng-Qiang, CHEN Jin, SHEN Miao-Gen, and ZHU Xiao-Lin
Spectral mixture analysis (SMA) is one of the most important methods in remote sensing image processing. Traditional SMA assumes a constant spectral signature for each endmember. However, the endmember spectral variability commonly exists, which leads to the lower accuracy of pixel unmixing. In order to solve this probSpectral mixture analysis (SMA) is one of the most important methods in remote sensing image processing. Traditional SMA assumes a constant spectral signature for each endmember. However, the endmember spectral variability commonly exists, which leads to the lower accuracy of pixel unmixing. In order to solve this problem, a novel unmixing method based on Fisher discriminant analysis (FDA) was developed. FDA aimed to find a linear combination of the spectral bands for getting the largest separation degree among the endmember spectra, i.e. small variability of spectra inside one endmember group but a large difference of spectra among endmember groups. Mixture pixel was unmixed by using transformed spectra, as a result, the adverse impact caused by endmember spectral variability on unmixng accuracy could be diminished to a large extent. A laboratory experiment was designed to obtain a group of mixed spectra with endmember spectral variability. The measured spectra were used to test the performance of the new method and the traditional SMA methods. The comparison results suggest that the new method outperforms the traditional methods with considerable improvement of unmixing accuracy..
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 476 (2009)
[in Chinese]
[in Chinese]
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 481 (2009)
[in Chinese]
[in Chinese]
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 484 (2009)
[in Chinese]
[in Chinese]
Journal of Infrared and Millimeter Waves
- Publication Date: Oct. 09, 2021
- Vol. 28, Issue 6, 485 (2009)
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20