A5036601817- Advanced Measurement and Metrology Techniques
- Optical measurement and interference techniques
- Optical Systems and Laser Technology
- Surface Roughness and Optical Measurements
- Calibration and Measurement Techniques
- Infrared Target Detection Methodologies
- Advanced optical system design
- Advanced Optical Sensing Technologies
- Spectroscopy and Chemometric Analyses
- Optical Coatings and Gratings
- Smart Agriculture and AI
- Engineering Applied Research
- Atmospheric aerosols and clouds
- Currency Recognition and Detection
- Micro and Nano Robotics
- Advanced Measurement and Detection Methods
- Engineering Structural Analysis Methods
- Asphalt Pavement Performance Evaluation
- Modular Robots and Swarm Intelligence
- Adaptive optics and wavefront sensing
- Advanced Materials and Mechanics
- Material Properties and Failure Mechanisms
- Ocular and Laser Science Research
Henan Institute of Science and Technology
2025
Xi'an Institute of Optics and Precision Mechanics
2019-2024
Sensor Electronics (United States)
2024
Technical University of Denmark
2023
University of Chinese Academy of Sciences
2019-2023
Danish National Metrology Institute
2023
Chinese Academy of Sciences
2020-2023
Tsinghua University
2022
Washington State University Spokane
2010
Magnetic nanorobotic swarms can mimic collective functions of organisms in nature and be programmed for flexible spatiotemporal control. In this work, different assemblies magnetic nanoparticle (MNP) were constructed. Temperature-sensitive hydrogels used as carriers to fix the distribution ensure stability swarm structure biocompatibility microrobot. Under three outfield assembly strategies (gravitational field, gradient uniform field), six modes MNP are encapsulated (three unilateral...
With the advent of technologies such as deep learning in agriculture, a novel approach to classifying wheat seed varieties has emerged. However, some existing models encounter challenges, including long processing times, high computational demands, and low classification accuracy when analyzing images, which can hinder their ability meet real-time requirements. To address these we propose lightweight model called LWheatNet. This integrates mixed attention module with multiple stacked...
Abstract Fatigue cracking is one of three major distresses for asphalt pavement. Asphalt binder a very important component asphaltic mixture. The fatigue performance also greatly affects that binder’s characteristics are affected by external conditions, such as temperature and loading rate. It warranted to study the effects these conditions on take them into account. New tests properties have been proposed characterize behavior binders, monotonic constant shear-rate tests. This investigated...
We propose a modified generalized Harvey–Shack model by adding the empirical correction factor related to scattering angle on basis of original theory. The result shows that reduces root mean square error (RMSE) from less than 2% 1%, and relative peak 50% 20%, which significantly improves accuracy prediction. prediction Rayleigh–Rice is not as good model. RMSE within 2.5%, 60%.
The scattering characteristics of random rough surfaces illuminated with a 3D converging–diverging Gaussian beam are investigated by applying the conventional Harvey–Shack theory in conjunction 2D plane-wave decomposition. is assumed to have an arbitrary angle incidence and be linearly s -polarized. Using data obtained from laser BRDF measurements on isotropic low surface roughness, we demonstrate that better accordance experimental than theory. two models become identical for large waist...
Dual-band imaging system can effectively improve the detection and identification capability for airborne camera. To ensure with compact structure without increasing complication of design, a catadioptric is proposed as an alternative where visible light long-wave infrared (LWIR) share mutual aperture adding dichroic beam splitter between primary secondary mirrors enables simultaneous two bands. The common achieved by sharing modified Cassegrain reflection in both entrance pupil diameter...
We propose a full-band model to quantitatively calculate terrestrial atmospheric scattering in stray light testing based on the Monte Carlo algorithm. Measurements are conducted using two classifications of air cleanliness at off-axis angles from 35° 90°. Corresponding simulations Mie and Rayleigh used for comparison with measured values. The relative root mean square deviation simulation measurement result is 3.72% 24.1% scattering, respectively. This exhibits excellent agreement between...
Starting from the Rayleigh-Rice perturbation theory, this paper derives empirical Harvey scatter model and ABg applied extensively in optical analysis software packages verifies shift-invariant behavior of scattered radiance direction cosine space. Using data obtained multi-wavelength laser scatterometer on carbon nanotube black coating pineblack coating, we establish polynomial based sine scattering angle plus specular reflection angle, i.e., sin θ s +sin 0 dual-Harvey -sin , respectively....
Abstract In the field of space optics, correct estimation amount stray light is necessary to evaluate system performance and guide selection design. Given noise target several picometers on distance measurements, this configuration very sensitive stray-light noise; thus, an important part design process. For complex optical systems, simulations can be performed by using specific analysis software (FRED, Tracepro, ASAP), which require expensive licenses excessive computing time. Herein, we...
在离子束抛光工艺过程中，材料确定性去除特性对预测光学元件的各工位材料去除量和驻留时间具有极其重要的作用。采用射频离子源对熔石英光学元件的离子束刻蚀特性进行了研究，利用ZYGO激光干涉仪获得准确的去除函数，系统分析了气体流量、屏栅电压、离子束入射角和工作距离等因素对熔石英去除函数的影响，并分析了各单一工艺因素微小扰动时，材料峰值去除率、半高宽和体积去除率的相对变化率。实验结果表明，相同工作真空条件下，工作气体质量流量的微小变化对去除函数影响极小，在典型的工艺条件下，屏栅电压在±5 V、离子束入射角±1°、工作距离在±0.5 mm范围内变化时，熔石英峰值去除率、体积去除率和峰值半高宽的相对变化均小于5%，去除函数具有较好的确定性和稳定性。
In this paper, a dual-band (visible light and SWIR) observation imaging optical system is proposed. The can acquire the characteristics of target in range 900nm-1700nm by imaging. SWIR not only get infrared target, but also has ability anti-camouflage through-fog. It makes up for deficiency visible integrated be widely used military monitoring, forest fire prevention, geodesy other fields, high practical values. shares front group telescopic objective field view. visual working band,...