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Full-band error control and crack-free surface fabrication techniques for ultra-precision fly cutting of large-apertureKDP crystals

F. H. ZHANG, S. F. WANG, C. H. AN, J. WANG, Q. XU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 193-202 doi: 10.1007/s11465-017-0448-8

Abstract:

Large-aperture potassium dihydrogen phosphate (KDP) crystals are widely used in the laser path ofThe most common method of manufacturing half-meter KDP crystals is ultra-precision fly cutting.When processing KDP crystals by ultra-precision fly cutting, the dynamic characteristics of the fly cuttingThese machining errors should be suppressed effectively to guarantee that KDP crystals meet the full-bandIn this study, the anisotropic machinability of KDP crystals and the causes of typical surface errors

Keywords： ultra-precision fly cutting     large-aperture KDP crystals     spatial frequency     processing error    

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Design of the Optical System with Large Relative Aperture and Large Linear Field of View

Pan Junye

Strategic Study of CAE 2000, Volume 2, Issue 8,   Pages 89-90

Abstract: system for IR detecting in the distance should be an total reflecting off-axis aspheric system with largerelative aperture and large field of view.

Keywords： IR detecting     relative aperture     large field of view     off-axis system     aspheric surface    

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Recent Developments in Functional Crystals in China Review

Jiyang Wang, Haohai Yu, Yicheng Wu, Robert Boughton

Engineering 2015, Volume 1, Issue 2,   Pages 192-210 doi: 10.15302/J-ENG-2015053

Abstract:

Functional crystals are the basic materials for the development of modern science and technology andIn this paper, we review functional crystals in China, including research history, significant achievements

Keywords： functional materials     laser crystals     nonlinear optical crystals     scintillation crystals     relaxor ferroelectriccrystals     semiconductors    

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Experimental study on high-efficiency polishing for potassium dihydrogen phosphate (KDP) crystal by using

Ziyuan LIU, Hang GAO, Dongming GUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 294-302 doi: 10.1007/s11465-019-0576-4

Abstract: inefficiency of previous water-dissolution polishing techniques for potassium dihydrogen phosphate (KDPThe mechanism underlying TAWF polishing is analyzed, a special device is built to polish the KDP crystaland revolution rate remarkably reduce the life of the polishing pad and the surface quality of the KDP

Keywords： potassium dihydrogen phosphate (KDP) crystal     controllable deliquescence     two-phase air–water fluid     high-efficiency    

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Synthesis of crystals and particles by crystallization and polymerization in droplet-based microfluidic

Jingtao WANG, Jin ZHANG, Junjie HAN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 26-36 doi: 10.1007/s11705-009-0292-4

Abstract: and polymerization assisted by droplet-based microfluidics to synthesize micro-particles and micro-crystalsdroplets are ideal microreactors to be manipulated in the channels to synthesize the nanocrystals, protein crystalsThe generated monodisperse particles or crystals are to meet different technical demands in many fieldsThe nucleation kinetics of some crystals like KNO was investigated in different microfluidic devices.

Keywords： core-shell     monodisperse     nucleation     Microfluidic     different technical    

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Filtration ability of hollow fiber membrane for production of magnesium ammonium phosphate crystals by

H. Watamura, H. Marukawa, I. Hirasawa

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 55-59 doi: 10.1007/s11705-013-1312-y

Abstract: Phosphorus recovery process by crystallization has a problem that it produces a large amount of finecrystals.MAP crystals were obtained by batch reaction crystallization and the filtration characteristics wereof large crystals decreases exponentially at less suspension density than of small crystals does.Also, increases as the ratio of the fractured crystals increases.

Keywords： membrane separation     crystallization     MAP    

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Precise Three-Dimensional Deformation Retrieval in Large and Complex Deformation Areas via Integrationof Offsets-Based Unwrapping and Improved Multiple-Aperture SAR Interferometry: Application to the 2016 Article

Won-Kyung Baek, Hyung-Sup Jung

Engineering 2020, Volume 6, Issue 8,   Pages 927-935 doi: 10.1016/j.eng.2020.06.012

Abstract:

Conventional synthetic aperture radar (SAR) interferometry (InSAR) has been successfully used to preciselymeasure surface deformation in the line-of-sight (LOS) direction, while multiple-aperture SAR interferometryThe surface deformation related to the 2016 Kumamoto earthquake was large and complex near the faultobjectives of this study were to ① perform a feasibility test of precise 3D deformation retrieval in largeprecise 3D deformation measured through the integration of the improved methods, even in a case of large

Keywords： Synthetic Aperture Radar (SAR)     Conventional SAR interferometry (InSAR)     Multiple-aperture SAR interferometry    

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Acoustic fault signal extraction via the line-defect phononic crystals

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 10-10 doi: 10.1007/s11465-021-0666-y

Abstract: In this paper, 2D line-defect phononic crystals (PCs) consisting of periodic acrylic tubes with slit

Keywords： phononic crystals     line-defect     fault signal extraction     acoustic enhancement    

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Ultra-wideband FMCW ISAR imaging with a large rotation angle based on block-sparse recovery Article

Ke JIN, Tao LAI, Gong-quan LI, Ting WANG, Yong-jun ZHAO

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 12,   Pages 2058-2069 doi: 10.1631/FITEE.1601310

Abstract: Combined with the inverse synthetic aperture technique, high azimuth resolution can be realized undera large rotation angle.However, the range-azimuth coupling problem seriously restricts the inverse synthetic aperture radar

Keywords： Frequency modulated continuous wave (FMCW)     Inverse synthetic aperture radar (ISAR)     Match-filter-based    

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Astatistical distribution texton feature for synthetic aperture radar image classification Article

Chu HE, Ya-ping YE, Ling TIAN, Guo-peng YANG, Dong CHEN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 10,   Pages 1614-1623 doi: 10.1631/FITEE.1601051

Abstract: We propose a novel statistical distribution texton (s-texton) feature for synthetic aperture radar (SAR

Keywords： Synthetic aperture radar     Statistical distribution     Parameter estimation     Image classification    

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Analysis of the Quality of Daily DEM Generation with Geosynchronous InSAR Article

Zefa Yang, Qingjun Zhang, Xiaoli Ding, Wu Chen

Engineering 2020, Volume 6, Issue 8,   Pages 913-918 doi: 10.1016/j.eng.2020.07.003

Abstract: Airborne and low-earth-orbit (LEO) space-borne interferometric synthetic aperture radar (InSAR) has beencycles, it is difficult to generate or update DEMs very frequently (e.g., on a daily basis) for a very largeGeosynchronous synthetic aperture radar (GEOSAR) satellites fly in geostationary earth orbits, allowingof a daily GEOSAR DEM is generally much lower than what can be achieved with typical LEO synthetic aperture

Keywords： Daily digital elevation model     Interferometric synthetic aperture radar     Geosynchronous synthetic aperture    

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Control of the agglomeration of crystals in the reactive crystallization of 5-(difluoromethoxy)-2-mercapto

Yongli WANG, Shuyuan MA, Xiaodong Lü, Chuang XIE

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 423-431 doi: 10.1007/s11705-012-1211-7

Abstract: 5-(Difluoromethoxy)-2-mercapto-1 -benzimidazole (DMB) was precipitated by adding acetic acid to the DMB sodium salt solution. The spherical agglomeration of DMB during the reactive crystallization in a batch crystallizer was monitored by real-time Particle Video Microscope (PVM). We found that the low feeding rate of acetic acid, high crystallization temperature, low agitation rate or adding seed crystal can facilitate the formation of spherical agglomerates. By using a simple model, the mean crystal agglomerate size of DMB thus predicted is generally in agreement with the experimental data. In addition, the crystallization process of DMB was optimized by a new control strategy of supersaturation to avoid disadvantages brought by agglomeration.

Keywords： 5-(difluoromethoxy)-2-mercapto-1H-benzimidazole (DMB)     reactive crystallization     agglomeration     feeding rate     crystallization temperature     agitation rate    

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Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 522-532 doi: 10.1007/s11709-023-0930-9

Abstract: stratum reinforcement strength and range at the shield end are provided based on different cutterhead aperture

Keywords： tunnel face stability     cutterhead configuration     aperture ratio     pressure gradient     support ratio    

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Multi-aperture optical imaging systems and their mathematical light field acquisition models Review Article

Qiming QI, Ruigang FU, Zhengzheng SHAO, Ping WANG, Hongqi FAN

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 6,   Pages 823-844 doi: 10.1631/FITEE.2100058

Abstract: ., to yield a high-resolution image or an image with a large field-of-view.

Keywords： Multi-aperture optical imaging system     Artificial compound eye     Light field camera     Camera array     Light    

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Optoelectronic Crystals, All-Solid-State Lasers and their Applications——An Important Course of Optoelectronics

Xu Zuyan

Strategic Study of CAE 1999, Volume 1, Issue 2,   Pages 72-77

Abstract: In the 1990s, great advances in optoelectronic crystals and breakthroughs in laser diode technology have

Keywords： optoelectronic crystals     all-solid-state lasers     material processing     optical storage     laser displays     laser    

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Title Author Date Type Operation

Full-band error control and crack-free surface fabrication techniques for ultra-precision fly cutting of large-apertureKDP crystals

F. H. ZHANG, S. F. WANG, C. H. AN, J. WANG, Q. XU

Journal Article

Design of the Optical System with Large Relative Aperture and Large Linear Field of View

Pan Junye

Journal Article

Recent Developments in Functional Crystals in China

Jiyang Wang, Haohai Yu, Yicheng Wu, Robert Boughton

Journal Article

Experimental study on high-efficiency polishing for potassium dihydrogen phosphate (KDP) crystal by using

Ziyuan LIU, Hang GAO, Dongming GUO

Journal Article

Synthesis of crystals and particles by crystallization and polymerization in droplet-based microfluidic

Jingtao WANG, Jin ZHANG, Junjie HAN,

Journal Article

Filtration ability of hollow fiber membrane for production of magnesium ammonium phosphate crystals by

H. Watamura, H. Marukawa, I. Hirasawa

Journal Article

Precise Three-Dimensional Deformation Retrieval in Large and Complex Deformation Areas via Integrationof Offsets-Based Unwrapping and Improved Multiple-Aperture SAR Interferometry: Application to the 2016

Won-Kyung Baek, Hyung-Sup Jung

Journal Article

Acoustic fault signal extraction via the line-defect phononic crystals

Journal Article

Ultra-wideband FMCW ISAR imaging with a large rotation angle based on block-sparse recovery

Ke JIN, Tao LAI, Gong-quan LI, Ting WANG, Yong-jun ZHAO

Journal Article

Astatistical distribution texton feature for synthetic aperture radar image classification

Chu HE, Ya-ping YE, Ling TIAN, Guo-peng YANG, Dong CHEN

Journal Article

Analysis of the Quality of Daily DEM Generation with Geosynchronous InSAR

Zefa Yang, Qingjun Zhang, Xiaoli Ding, Wu Chen

Journal Article

Control of the agglomeration of crystals in the reactive crystallization of 5-(difluoromethoxy)-2-mercapto

Yongli WANG, Shuyuan MA, Xiaodong Lü, Chuang XIE

Journal Article

Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Journal Article

Multi-aperture optical imaging systems and their mathematical light field acquisition models

Qiming QI, Ruigang FU, Zhengzheng SHAO, Ping WANG, Hongqi FAN

Journal Article

Optoelectronic Crystals, All-Solid-State Lasers and their Applications——An Important Course of Optoelectronics

Xu Zuyan

Journal Article