A5052852912- Advanced Measurement and Metrology Techniques
- Surface Roughness and Optical Measurements
- Optical measurement and interference techniques
- Manufacturing Process and Optimization
- Advanced Numerical Analysis Techniques
- Advanced Surface Polishing Techniques
- Adhesion, Friction, and Surface Interactions
- Advanced machining processes and optimization
- Additive Manufacturing and 3D Printing Technologies
- Tribology and Lubrication Engineering
- 3D Shape Modeling and Analysis
- Additive Manufacturing Materials and Processes
- Image Processing Techniques and Applications
- Advanced Fiber Optic Sensors
- Optical Coherence Tomography Applications
- Photonic and Optical Devices
- Industrial Vision Systems and Defect Detection
- Optical Systems and Laser Technology
- Orthopaedic implants and arthroplasty
- Image and Signal Denoising Methods
- Digital Holography and Microscopy
- Semiconductor Lasers and Optical Devices
- Computer Graphics and Visualization Techniques
- Scientific Measurement and Uncertainty Evaluation
- Adaptive optics and wavefront sensing
University of Huddersfield
2016-2025
Engineering and Physical Sciences Research Council
2016-2025
Sun Yat-sen Memorial Hospital
2025
Sun Yat-sen University
2025
Zhejiang A & F University
2025
Huazhong University of Science and Technology
2008-2024
Fudan University
2013-2024
Fuzhou University
2024
National University of Defense Technology
2024
University of Southampton
2024
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) is a special reflecting Schmidt telescope. LAMOST's design allows both large aperture (effective of 3.6 m–4.9 m) and wide field view (FOV) (5°). It has an innovative active configuration which continuously changes mirror's surface that adjusts during observation process combines thin deformable mirror optics with segmented optics. Its primary (6.67 m × 6.05 (5.74m 4.40m) are...
The Large sky Area Multi-Object Spectroscopic Telescope (LAMOST) General Survey is a spectroscopic survey that will eventually cover approximately half of the celestial sphere and collect 10 million spectra stars, galaxies QSOs. Objects both in pilot first year general are included LAMOST First Data Release (DR1). started October 2011 ended June 2012, data have been released to public as Pilot August 2012. September completed its operation 2013. DR1 includes total 1202 plates containing...
This paper describes the data release of LAMOST pilot survey, which includes reduction, calibration, spectral analysis, products and access. The accuracy released information about FITS headers spectra are also introduced. set 319 000 a catalog these objects.
Abstract Freeform optics has become the most prominent element of industry. Advanced freeform optical designs supplementary to ultra-precision manufacturing and metrology techniques have upgraded lifestyle, thinking, observing power existing humans. Imaginations related space explorations, portability, accessibility also witnessed sensible in today’s time with optics. Present-day design methods fabrications applicable development market requirements are focussed explained help traditional...
This is the second part of paper ‘Paradigm shifts in surface metrology’. In I, three historical paradigm metrology were brought together, and subsequent evolution resulting from discussed. The philosophy highlighted fact that must be robust flexible, meaning allow for full control manufacture provide an understanding functional performance. Part II presents current shift as a ‘stepping stone’, building on above context. Aspects geometry will also have to cater surfaces derived disruptive...
Abstract. Understanding the behavior of global climate system during extremely warm periods is one major themes paleoclimatology. Proxy data demonstrate that equator-to-pole temperature gradient was much lower mid-Cretaceous "supergreenhouse" period than at present, implying larger meridional heat transport by atmospheric and/or oceanic circulation. However, reconstructions circulation Cretaceous have been hampered a lack appropriate datasets based on reliable proxies. Desert distribution...
Powder bed fusion (PBF) is a popular additive manufacturing (AM) process with wide applications in key industrial sectors, including aerospace, automotive, healthcare, defence. However, deficiency of PBF its low quality surface finish. A number variables and other factors (e.g. powders, recoater) can influence the quality. It significant importance to measure characterise surfaces for benefits optimisation, product performance evaluation also design. state-of-the-art review given summarise...
An important step of phase calculation-based fringe projection systems is 3D calibration, which builds up the relationship between an absolute map and shape data.The existing calibration methods are complicated hard to implement in practical environments due requirement a precise translating stage or gauge block.This paper presents method uses white plate with discrete markers on surface.Placing at several random positions can determine depth, as well pixel position X, Y...
Abstract In computer-aided design (CAD) and process planning (CAPP), feature recognition is an essential task which identifies the type of a 3D model for manufacturing (CAM). general, traditional rule-based methods are computationally expensive, dependent on surface or types. addition, it quite challenging to proper rules recognise intersecting features. Recently, learning-based method, named FeatureNet, has been proposed both single multi-feature recognition. This general purpose algorithm...
This keynote paper gives an overview of emerging technologies feature-based characterisation, for surface topographies having features. It is complementary to conventional characterisation using texture field parameters. An original concept, the feature spectrum proposed organise surfaces, in order help select appropriate different types and achieve a more direct relationship between manufacturing process function. The focuses on fundamentals state art technologies. Applications are...
A data-fitting method based on the whale optimization algorithm (WOA) is proposed to determine thickness and refractive index of films measured by spectroscopic ellipsometry (SE). To demonstrate this method, tin oxide (SnO2) with transparent wavelength coverage (400–800 nm) are evaluated. The comparative analysis indicates that Psi Delta parameter curves WOA fitting align more closely those obtained through experiments. Furthermore, in nearly agreement results from well-known...
Surface texture and its measurement are becoming the most critical factors important functionality indicators in performance of high precision nanoscale devices components. metrology as a discipline is currently undergoing huge paradigm shift: from profile to areal characterization, stochastic structured surfaces, simple geometries complex free-form geometries, all spanning millimetre sub-nanometre scales. This paper builds complete philosophical framework for surface through review shifts...
We introduce a new optical interferometry system for fast areal surface measurement of microscale and nanoscale surfaces that are immune to environmental noise. Wavelength scanning together with an acousto-optic tunable filtering technique is used measure large step heights. An active servo control serves as phase-compensating mechanism eliminate the effects The can be online or in-process on shop floor. Measurement results from two height standard samples structured semiconductor...
The effects of growth temperature on the microstructure evolution and electrical transport properties Cu2O films were investigated. Nanocrystalline with modest p-type semiconducting (Hall mobilities ∼20 cm2/Vs, hole concentrations ∼1016 cm−3) successfully prepared at room without post-annealing. Bottom gate top contact p-channel thin-film transistors (TFTs) constructed flexible polyethylene terephthalate substrates temperature, which shows superior transfer performance (field effect mobility...
With the advent of intelligent manufacturing, phase measuring deflectometry (PMD) has been widely studied for measurement three-dimensional (3D) shape specular objects. However, existing PMDs cannot measure objects having discontinuous surfaces. This paper presents a new direct PMD (DPMD) method that measures full-field 3D complicated A mathematical model is derived to directly relate an absolute map depth data, instead gradient. Two relevant parameters are calibrated using machine...