A5063856135- Optical measurement and interference techniques
- Advanced Measurement and Metrology Techniques
- Image Processing Techniques and Applications
- Optical Coherence Tomography Applications
- Surface Roughness and Optical Measurements
- Additive Manufacturing Materials and Processes
- Digital Holography and Microscopy
- Additive Manufacturing and 3D Printing Technologies
- Engineering Technology and Methodologies
- Advanced Fiber Optic Sensors
- Photoacoustic and Ultrasonic Imaging
- Advanced Fluorescence Microscopy Techniques
- Optical Coatings and Gratings
- Granular flow and fluidized beds
- Advanced Memory and Neural Computing
- Orbital Angular Momentum in Optics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Microwave Imaging and Scattering Analysis
- Atmospheric aerosols and clouds
- Geophysical Methods and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Mechanical and Optical Resonators
- Random lasers and scattering media
- Ultrasonics and Acoustic Wave Propagation
- Innovations in Educational Methods
University of Nottingham
2022-2025
Shahid Beheshti University
2019-2020
Coherence scanning interferometry (CSI) is a widely used optical method for surface topography measurement of industrial and biomedical surfaces. The operation CSI can be modeled using approximate physics-based approaches with minimal computational effort. A critical aspect modeling defining the transfer function imaging properties instrument to predict interference fringes from which information extracted. Approximate methods, example, elementary Fourier optics, universal foil models, use...
Metal nanoparticles-based nanoinks have shown potential for fabricating metallic components essential to the realization of innovative 3D-printed electronic devices. However, patterns on flexible, heat-sensitive substrates remains challenging due high temperature and energy sources, such as intense pulsed light (IPL), involved in sintering process. Here an efficient method is presented using ultralow power UV by leveraging photocleavable ligand, o-nitrobenzyl thiol (NT), - functionalized...
A field-portable, single-shot and very simple method is presented for measuring the full complex degree of coherence (CDC) a quasi-monochromatic Schell-model field using Fresnel diffraction from phase discontinuity. To validate proposed technique, CDC light emitted an incoherent source with variable size investigated. The results are in excellent agreement theoretical predictions Van Cittert-Zernike theorem. This technique also applicable to characterize properties sources other spectral...
Coherence scanning interferometry (CSI) is a widely used optical method for surface topography measurement of industrial and biomedical surfaces. The operation CSI can be modelled using approximate physics-based approaches with minimal computational effort. A critical aspect modelling defining the transfer function imaging properties instrument in order to predict interference fringes from which information extracted. Approximate methods, example, elementary Fourier optics, universal optics...
In this paper, a spatial phase shifting digital speckle pattern shearography setup based on common path interferometer and modest components is proposed for direct measurement of dynamical deformation gradient objects. The simplicity, stability, efficiency the are provided by employing plane parallel glass plate as shearing device. desired field view can easily be achieved two lenses. Moreover, adjustable carrier frequencies within which needed to evaluate difference before after Fourier...
A common-path spatial phase shifting digital speckle pattern shearing interferometry setup is introduced for simultaneous measurement of in-plane and out-plane strain components under dynamic loading using two laser beams with different wavelengths that symmetrically illuminate the test object a single detector. The simplicity, stability, efficiency arrangement are provided by glass plate as device, which capable tuning sensitivity continuously. recovered from frame Fourier method. In this...
Approximate and rigorous methods are widely used to model light scattering from a surface. The boundary element method (BEM) is that accounts for polarization multiple effects. BEM suitable the scattered surfaces with complex geometries containing overhangs re-entrant features. Beckmann–Kirchhoff (BK) model, which an approximate can be predict behavior of slowly varying surfaces. Although BK cannot applied surface give rise effects, it has been field due its fast simple implementation. While...
We introduce a modification to the matching Ronchi test visualize lens aberrations with simple and inexpensive equipment available in educational optics labs. This method can help instructors students observe estimate real time. It is also semi-quantitative tool for primary tests research In this work by comparing single doublet, we clearly demonstrate superior quality of doublet over lens, their conic constants.
The spatial phase shifting digital speckle pattern shearing interferometry (DSPSI) system has been widely used to determine map of deformation. In this paper a common-path DSPSI setup is introduced for in-plane strain measurement under dynamic loading, using two laser beams with different wavelengths that symmetrically illuminate the test object, and single detector. simplicity, stability efficiency arrangement are provided glass plate as device which capable tuning sensitivity continuously....
Approximate and rigorous methods are widely used to model light scattering from a surface. The boundary element method (BEM) is that accounts for polarisation multiple effects. BEM suitable the scattered surfaces with complex geometries containing overhangs re-entrant features. Beckmann- Kirchhoff (BK) model, which an approximate can be predict behaviour of slowlyvarying surfaces. Although BK cannot applied surface give rise effects, it has been field due its fast simple implementation....
Residual or induced strains are important factors in the performance of electronic devices, actuators, and sensors. In this paper, we report application digital speckle shearography to obtain two-dimensional field-induced out-of-plane strain maps a piezoelectric slab under varying electric field. Both free-standing loaded (pinned) states investigated. The results show field-dependent with parabolic profiles on order 10−4 10−3 pinned states, respectively, agreement typical values for...