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481
A study on the use of femtosecond laser to perform surface polishing on a selective laser melting manufactured type 316L stainless steel
Published 2019“…It appeared to be the effect of more material getting ablated in the depth direction surrounding the particulate where the laser beam was directed to the surface for a longer period. …”
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Final Year Project (FYP) -
482
Broadband strip-line ferromagnetic resonance spectroscopy of soft magnetic CoFeTaZr patterned thin films
Published 2018“…Broadband strip-line ferromagnetic resonance spectroscopy over wide range of frequency (8 – 20 GHz) was used to study the magnetization dynamics as a function of ion-beam dosage. With higher fluences, damping constant showed a continuous increase from 0.0103 to 0.0430. …”
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Journal Article -
483
Coherently tunable triangular trefoil phaseonium metamaterial
Published 2018“…Phaseonium is a three-level Λ quantum system, in which a coherent microwave and an optical control (pump) beams can be used to actively modulate the dielectric response. …”
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Journal Article -
484
Effect of embedded nanoparticle surface chemistry on plasmonic organic photovoltaic devices
Published 2018“…Ligand-free metal NPs prepared by physical methods such as pulsed laser ablation and electron beam evaporation can enhance the PCE when introduced into the BHJ. …”
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Journal Article -
485
Real-time measurement of nano-particle size using differential optical phase detection
Published 2018“…Nano-particle diameters are obtained from the differential phase shift as a result of adding an optical scattering perturbation into two-beam interference. Polystyrene nano-particles with diameters from 200 to 900 nm in a microfluidic channel are detected using this technique to acquire real-time particle diameters. …”
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Journal Article -
486
Long-wavelength monolithic gaInNAs vertical-cavity optical amplifiers
Published 2009“…The VCSOA structure was monolithically grown by molecular beam epitaxy and operated in reflection mode in a fiber-coupled system. …”
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Journal Article -
487
Combined electron imaging and diffraction methods for understanding disordered rocksalt cathodes
Published 2023“…The nature of short range order (SRO) has been identified as a determining factor in the lithium migration properties, yet very few in-depth studies exist in the literature. …”
Thesis -
488
Optical properties of ultrathin metal oxide and metal films : effect of free electrons, quantum confinement and localized surface plasmon resonance
Published 2016“…Ultrathin Au films were deposited using electron beam evaporation technique. Optical properties including dielectric function, optical constant and band gap energy of the thin films were investigated with spectroscopic ellipsometry (SE) based on various optical dispersion models. …”
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Thesis -
489
3D ultrasonic imaging of surface-breaking cracks using a linear array
Published 2022“…Although several ultrasonic imaging methods have been implemented to inspect different types of defects, there has been limited research to characterise surface-breaking cracks (SBCs) in 3D quantitatively. …”
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Journal Article -
490
Performance Characterization of High-Density Electrospray Thrusters
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Article -
491
Digital holography to light field
Published 2014“…Due to its non-interferometric nature, TIE relaxes the stringent beam-coherence requirements for interferometry, extending its applications to various optical fields with arbitrary spatial and temporal coherence. …”
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Conference Paper -
492
Photonic engineering technology for the development of terahertz quantum cascade lasers
Published 2020“…However, the applications of THz QCL require good output characteristics in terms of the emission spectrum, beam quality, power efficiency, and polarization control, which are beyond the reach of the electronic engineering techniques. …”
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Journal Article -
493
Tunable quantum cascade lasers for midinfrared spectroscopic sensing
Published 2024“…Based on this beam combined tunable QCL array, we develop a portable sensor that integrates the modules of drivers, optical sensing, and signal processing in a box. …”
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Thesis-Doctor of Philosophy -
494
Optimizing MC-ICP-MS with SEM protocols for determination of U and Th isotope ratios and 230Th ages in carbonates
Published 2019“…Non-linear behavior was not observed in the MasCom SEM with a retarding potential quadrupole in our MC-ICP-MS system when the beam intensity was limited to < ∼1 × 10 6 cps. We performed a series of tests to examine the influence of tuning parameters, peak shift, and operating voltage of the SEM on isotopic measurements. …”
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Journal Article -
495
Three-dimensional imaging of microstructures by an improved compact digital holographic microscope (ICDHM) with dual wavelength
Published 2018“…A point source generated by a long working distance microscope objective is located into the cube beam-splitter to get a higher numerical aperture (NA) of the system. …”
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Conference Paper -
496
Measuring the hole-state anisotropy in MgB2 by electron energy-loss spectroscopy
Published 2011“…In particular, we have studied two different crystal orientations, [110] and [001], with respect to the incident electron beam direction, and found significant changes in the near-edge fine structure of the B K-edge. …”
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Journal Article -
497
Multiple hollow-core anti-resonant fiber as a supermodal fiber interferometer
Published 2020“…This unique characteristic has driven emerging of new applications spanning from extreme wavelength generation to beam delivery. The successful demonstrations appear to suggest progression of the technology toward device level development and all-fiberized systems. …”
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Journal Article -
498
Multi-branch sandwich piezoelectric energy harvester : mathematical modeling and validation
Published 2021“…The proposed harvester comprises of a main sandwich beam as substrate with a patch of piezoelectric layer bonded over it. …”
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Journal Article -
499
Three dimensional acoustic tweezers with vortex streaming
Published 2021“…Acoustic tweezers based on single-beam focused acoustic vortices have attracted considerable attention due to their selective trapping capability, but have proven difficult to use for three-dimensional (3D) trapping without a complex transducer array and significant constraints on the trapped particle properties. …”
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Journal Article -
500
Reduction of bubble cavitation by modifying the diffraction wave from a lithotripter aperture
Published 2013“…There is no difference, however, in both the amplitude and duration of the compressive shockwaves between these two configurations as well as the −6 dB beam width in the focal plane. The significant suppression effect of bubble cavitation was confirmed by the measured bubble collapse time using passive cavitation detection. …”
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Journal Article