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Diffractive Deep Neural Networks at Visible Wavelengths Article

Hang Chen, Jianan Feng, Minwei Jiang, Yiqun Wang, Jie Lin, Jiubin Tan, Peng Jin

Engineering 2021, Volume 7, Issue 10,   Pages 1485-1493 doi: 10.1016/j.eng.2020.07.032

Abstract:

Optical deep learning based on diffractive optical elements offers unique advantages for parallel

Keywords： Optical computation     Optical neural networks     Deep learning     Optical machine learning     Diffractive deep    

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Current Status and Future Development of Quantum Computation

Li Xiaowei, Fu Xiang, Yan Fei, Zhong Youpeng, Lu Chaoyang, Zhang Junhua, He Yu, Yu Shi, Lu Dawei, Xin Tao, Chen Jilei, Lin Benchuan, Zhang Zhensheng, Liu Song, Chen Yuanzhen, Yu Dapeng

Strategic Study of CAE 2022, Volume 24, Issue 4,   Pages 133-144 doi: 10.15302/J-SSCAE-2022.04.016

Abstract: The feasible path for large-scale extension is to integrate optical elements on optical chips, for exampleThis optical chip scheme is characterized by high stability and good scalability; however, the currentwaveguides, and optical detectors onto the chip to realize the integration and miniaturization of thebuild a neutral-atom array in optical traps.Quantum information is encoded in the internal states of a single atom, and then microwave or optical

Keywords： quantum computation     quantum algorithm     control system of quantum computation     quantum software     superconductingquantum computation     distributed quantum computation     trapped-ion quantum computation     silicon-basedquantum computation     photonic quantum computation     neutral atom quantum computation     nitrogen-vacancycolor center in diamond     nuclear magnetic resonance quantum computation     quantum computation with spinwave     topological quantum computation    

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HIGH-PERFORMANCE COMPUTATION AND ARTIFICIAL INTELLIGENCE IN PESTICIDE DISCOVERY: STATUS AND OUTLOOK

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 1,   Pages 150-154 doi: 10.15302/J-FASE-2021419

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Spectral element modeling based structure piezoelectric impedance computation and damage identification

Zhigang GUO, Zhi SUN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 458-464 doi: 10.1007/s11709-011-0133-7

Abstract: This paper presents a numerical simulation study on electromechanical impedance technique for structural damage identification. The basic principle of impedance based damage detection is structural impedance will vary with the occurrence and development of structural damage, which can be measured from electromechanical admittance curves acquired from PZT patches. Therefore, structure damage can be identified from the electromechanical admittance measurements. In this study, a model based method that can identify both location and severity of structural damage through the minimization of the deviations between structural impedance curves and numerically computed response is developed. The numerical model is set up using the spectral element method, which is promised to be of high numerical efficiency and computational accuracy in the high frequency range. An optimization procedure is then formulated to estimate the property change of structural elements from the electric admittance measurement of PZT patches. A case study on a pin-pin bar is conducted to investigate the feasibility of the proposed method. The results show that the presented method can accurately identify bar damage location and severity even when the measurements are polluted by 5% noise.

Keywords： PZT     piezoelectric impedance     optimization     spectral element     damage identification    

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Iteration framework for solving mixed lubrication computation problems

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 635-648 doi: 10.1007/s11465-021-0632-8

Abstract: The general discrete scheme of time-varying Reynolds equation loses the information of the previous step, which makes it unreasonable. A discretization formula of the Reynolds equation, which is based on the Crank–Nicolson method, is proposed considering the physical message of the previous step. Gauss–Seidel relaxation and distribution relaxation are adopted for the linear operators of pressure during the numerical solution procedure. In addition to the convergent criteria of pressure distribution and load, an estimation framework is developed to investigate the relative error of the most important term in the Reynolds equation. Smooth surface with full contacts and mixed elastohydrodynamic lubrication is tested for validation. The asperity contact and sinusoidal wavy surface are examined by the proposed discrete scheme. Results show the precipitous decline in the boundary of the contact area. The relative error suggests that the pressure distribution is reliable and reflects the accuracy and effectiveness of the developed method.

Keywords： mixed lubrication     discretization formula     relative error     Reynolds equation     asperity    

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Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 1-31 doi: 10.1007/s11465-020-0602-6

Abstract: Optical interferometry is a powerful tool for measuring and characterizing areal surface topography inA variety of instruments based on optical interferometry have been developed to meet the measurementThis paper provides an in-depth perspective of surface topography reconstruction for optical interferometricPrinciples, configurations, and applications of typical optical interferometers with different capabilitiesThis paper also presents the new challenges that optical interferometry techniques are facing in surface

Keywords： surface topography     measurement     optical interferometry     coherence envelope     phase-shifting algorithm    

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Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 3-17 doi: 10.1007/s11465-017-0408-3

Abstract: and time consuming to use machining processes, such as grinding, polishing and lapping, to produce opticalPrecision glass molding (PGM) has thus been developed to realize an efficient manufacture of such opticalFor example, a PGM process must be carried out within the super-cooled region of optical glass abovemanufacturing chain consideration from mold material selection, property and deformation characterization of optical

Keywords： precision glass molding     optical lens     constitutive modeling     optimization     manufacturing chain     Industry    

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The Latest Development of Optical Fiber, Optical Fiber Band and Optical Cable Technology Abroad

Liu Liangyan

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 86-94

Abstract:

In this paper, new development about the study of dispersion-compensable low transmission loss opticalfiber, nonzero dispersion displacement optical fiber, and carbon-coated or silicon nitride-coated opticalThen the manufacture technology of band optical fiber including its structure, coatings, properties andMulti-core optical fiber band cable manufacture technology such as twisted loose-tube, center loose-tube, frame, dry core band optical cable was also discussed.

Keywords： optical communication     low transmission loss optical fiber     optical fiber band     band optical fiber cable    

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Scientific computation of big data in real-world clinical research

Guozheng Li,Xuewen Zuo,Baoyan Liu

Frontiers of Medicine 2014, Volume 8, Issue 3,   Pages 310-315 doi: 10.1007/s11684-014-0358-7

Abstract: This study describes the origin, concept, connotation, and value of studies regarding the scientific computation

Keywords： big data     real world     clinical research     Chinese medicine     medical computing    

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Multiscale computation on feedforward neural network and recurrent neural network

Bin LI, Xiaoying ZHUANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1285-1298 doi: 10.1007/s11709-020-0691-7

Abstract: Computational homogenization methods for nonlinear material and implementation of offline multiscale computation

Keywords： multiscale method     constitutive model     feedforward neural network     recurrent neural network    

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Optical Problems in Imaging Optical Engineering

Pan Junhua

Strategic Study of CAE 2000, Volume 2, Issue 3,   Pages 32-35

Abstract: According to the trend of technical progress, it is unavoidable to use reflective optical systems, andFor optical system design, the main problem is how to construct an effective reflecting system whichmay be optimized by the optical CAD.

Keywords： imaging optics     aspheric mirror     optical design     optical fabrication and testing    

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Effects of critical geometric parameters on the optical performance of a conical cavity receiver

Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 673-683 doi: 10.1007/s11708-019-0630-2

Abstract: The optical performance of a receiver has a great influence on the efficiency and stability of a solarMost of the literature focuses on the optical performance of receivers with different geometric shapesThese factors affect the optical efficiency, the maximum heat flux density, and the light distributionThe increase in the number of loops contributed to an increase in the optical efficiency and a uniformThe conical cavity receiver had an optimal optical performance when the focal point of the collector

Keywords： parabolic collector     conical cavity receiver     critical geometric parameters     optical performance    

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Analytical model and finite element computation of braking torque in electromagnetic retarder

Lezhi YE,Guangzhao YANG,Desheng LI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4,   Pages 368-379 doi: 10.1007/s11465-014-0314-x

Abstract:

An analytical model has been developed for analyzing the braking torque in electromagnetic retarder by flux tube and armature reaction method. The magnetic field distribution in air gap, the eddy current induced in the rotor and the braking torque are calculated by the developed model. Two-dimensional and three-dimensional finite element models for retarder have also been developed. Results from the analytical model are compared with those from finite element models. The validity of these three models is checked by the comparison of the theoretical predictions and the measurements from an experimental prototype. The influencing factors of braking torque have been studied.

Keywords： electromagnetic retarder     magnetic field distribution     magnetic circuit     finite element method    

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Recent advancements in optical microstructure fabrication through glass molding process

Tianfeng ZHOU,Xiaohua LIU,Zhiqiang LIANG,Yang LIU,Jiaqing XIE,Xibin WANG

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 46-65 doi: 10.1007/s11465-017-0425-2

Abstract:

Optical microstructures are increasingly applied in several fields, such as optical systems, precisionThis paper presents an overview of optical microstructure fabrication through glass molding and highlightsthe applications of optical microstructures in mold fabrication and glass molding.

Keywords： optical microstructure     microgroove     microlens     glass molding process     single-point diamond cutting    

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Review of optical tweezers in vacuum Special Feature on Precision Measurement and Inst

Nan LI, Xun-min ZHU, Wen-qiang LI, Zhen-hai FU, Meng-zhu HU, Hui-zhu HU

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 5,   Pages 655-673 doi: 10.1631/FITEE.1900095

Abstract:

As a versatile tool for trapping and manipulating neutral particles, optical tweezers have been studiedFurthermore, unlike levitating particles in liquid or air, optical tweezers operating in vacuum are isolatedIn this paper we review the history and the basic concepts of optical tweezers in vacuum and provide

Keywords： Optical tweezers     Optical trapping in vacuum     Optical cooling    

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Title Author Date Type Operation

Diffractive Deep Neural Networks at Visible Wavelengths

Hang Chen, Jianan Feng, Minwei Jiang, Yiqun Wang, Jie Lin, Jiubin Tan, Peng Jin

Journal Article

Current Status and Future Development of Quantum Computation

Li Xiaowei, Fu Xiang, Yan Fei, Zhong Youpeng, Lu Chaoyang, Zhang Junhua, He Yu, Yu Shi, Lu Dawei, Xin Tao, Chen Jilei, Lin Benchuan, Zhang Zhensheng, Liu Song, Chen Yuanzhen, Yu Dapeng

Journal Article

HIGH-PERFORMANCE COMPUTATION AND ARTIFICIAL INTELLIGENCE IN PESTICIDE DISCOVERY: STATUS AND OUTLOOK

Journal Article

Spectral element modeling based structure piezoelectric impedance computation and damage identification

Zhigang GUO, Zhi SUN

Journal Article

Iteration framework for solving mixed lubrication computation problems

Journal Article

Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Journal Article

Precision glass molding: Toward an optimal fabrication of optical lenses

Liangchi ZHANG,Weidong LIU

Journal Article

The Latest Development of Optical Fiber, Optical Fiber Band and Optical Cable Technology Abroad

Liu Liangyan

Journal Article

Scientific computation of big data in real-world clinical research

Guozheng Li,Xuewen Zuo,Baoyan Liu

Journal Article

Multiscale computation on feedforward neural network and recurrent neural network

Bin LI, Xiaoying ZHUANG

Journal Article

Optical Problems in Imaging Optical Engineering

Pan Junhua

Journal Article

Effects of critical geometric parameters on the optical performance of a conical cavity receiver

Hu XIAO, Yanping ZHANG, Cong YOU, Chongzhe ZOU, Quentin FALCOZ

Journal Article

Analytical model and finite element computation of braking torque in electromagnetic retarder

Lezhi YE,Guangzhao YANG,Desheng LI

Journal Article

Recent advancements in optical microstructure fabrication through glass molding process

Tianfeng ZHOU,Xiaohua LIU,Zhiqiang LIANG,Yang LIU,Jiaqing XIE,Xibin WANG

Journal Article

Review of optical tweezers in vacuum

Nan LI, Xun-min ZHU, Wen-qiang LI, Zhen-hai FU, Meng-zhu HU, Hui-zhu HU

Journal Article