-
1021
Discontinuity of overhanging melt track in selective laser melting process
Published 2020“…The simulation model was achieved by incorporating Fresnel reflections in the laser beam through the ray-tracing model. The CFD model was employed to investigate different overhanging situations, including perpendicular and parallel overhanging melt tracks on a cuboid block, as well as parallel melt tracks on an inclined block. …”
Get full text
Journal Article -
1022
Adaptive macro spatial modulation for mmWave dense networks
Published 2021“…In the proposed scheme, a user equipment (UE) adaptively establishes communication links with multiple small base stations (SBSs) and switches its beam direction between these SBSs according to part of its transmitting information. …”
Get full text
Journal Article -
1023
Observation of the interactions of silver nanoparticles (AgNPs) mediated by acid in the aquatic matrices using in-situ liquid cell transmission electron microscopy
Published 2021“…Aggregates formed in this scenario were non spherical and irregular shaped and were stable under the electron beam irradiation. Individual AgNPs and smaller aggregates moved randomly and approached the larger aggregates before the aggregation process came to an end. …”
Get full text
Journal Article -
1024
Post-buckling transition of compressed pipe strings in horizontal wellbores
Published 2021“…In the current study, the compressed pipe strings initially located at the bottom of horizontal wellbores were discretized into beam elements, and a gap element was introduced to detect the contact between the horizontal strings and the wellbores. …”
Get full text
Journal Article -
1025
Enhanced versatility of table-top X-rays from Van der Waals structures
Published 2022“…By introducing a tilt angle between the vdW structure and the incident electron beam, it is theoretically and experimentally shown that the accessible photon energy range is more than doubled. …”
Get full text
Journal Article -
1026
Single antenna power measurements based direction finding : an FRI solution
Published 2010“…Determining the angle of arrival (AoA) for wireless source signals has great poten- tial practical applications, one example is beam forming in cellular communication. The conventional methodology used to determine the AoA mainly uses the an- tenna array as an acquisition system, and there are many signal process algorithms developed to retrieve the direction of arrival information. …”
Get full text
Final Year Project (FYP) -
1027
Nanostructured vanadium dioxide with metal to insulator transition : preparation and thermochromic properties
Published 2017“…The pristine and doped VO2 nanostructures could be synthesized under normal hydrothermal approaches, and it is of great interests that VO2 nanobeams exhibit the dual surface plasmon resonance (SPR), which was firstly reported and such beam structure is also promising for electronic device.…”
Get full text
Thesis -
1028
Fabrication of artificial defects in aircraft components for nondestructive testing using 3D printing
Published 2019“…It was found that despite being able to correctly measure the component’s depth, the topography was found to be distorted due to a combination of beam spread and machine measurement errors. Lastly, due to the limitations and cost of this project, several recommendations and improvements have been identified. …”
Get full text
Final Year Project (FYP) -
1029
A cantilever-based NEM nonvolatile memory utilizing electrostatic actuation and vibrational deactuation for high-temperature operation
Published 2015“…The memory bit (0/1) is formed by the opening/closing of a cantilever beam. Permanent retention is obtained by adhesive force between two smooth surfaces in contact, eliminating leakage observed in all types of storage-layer-based NVMs. …”
Get full text
Get full text
Journal Article -
1030
Integration of InGaAs MOSFETs and GaAs/ AlGaAs lasers on Si Substrate for advanced opto-electronic integrated circuits (OEICs)
Published 2019“…The laser and transistor layers were grown on the Si substrate by molecular beam epitaxy (MBE) using direct epitaxial growth. …”
Get full text
Get full text
Journal Article -
1031
Epitaxial growth of low threading dislocation density InSb on GaAs using self-assembled periodic interfacial misfit dislocations
Published 2016“…The InSb layer was grown at 310°C by molecular beam epitaxy. The AFM measurement exhibited a root mean square (r.m.s.) roughness of 1.1 nm. ω-2θ scan results from x-ray diffraction measurement indicated that the InSb layer is 98.9% relaxed. …”
Get full text
Get full text
Journal Article -
1032
Quantitative measurement of displacement in photopolymer layers during holographic recording using phase shifting electronic speckle pattern interferometry
Published 2016“…It was observed that the displacement profile is Gaussian and resembles to the profile of the recording beam. We observed an increase in shrinkage from 2 μm at 20 seconds of recording to 7.5 μm after 120 seconds of recording. …”
Get full text
Get full text
Conference Paper -
1033
Antenna-enhanced and polarization sensitive photoresponse in arrays of silicon P–i–N nanowires
Published 2013“…Quantitative characterization of these resonances was performed by spectral and polarization-resolved photocurrent measurements on gratings with N = 500, 200 and 100 nanowires, aided by electron beam-induced current measurements, and in excellent agreement with electromagnetic scattering theory. …”
Get full text
Get full text
Journal Article -
1034
Laser Surface Processing of Hot Rolled Ni-45.0at.%Ti Shape Memory Alloy
Published 2018“…The oxidized and polished surfaces were analyzed by White-Light Interference (WLI), Focus ion beam (FIB) and energy dispersive spectrometer (EDS). …”
Get full text
Get full text
Journal Article -
1035
Damage identification by using a self-synchronizing multipoint laser doppler vibrometer
Published 2018“…In this paper, a damage detection technique is proposed using a self-synchronizing multipoint LDV. Multiple laser beams with various frequency shifts are projected on different points of the object, reflected and interfered with a common reference beam. …”
Get full text
Get full text
Journal Article -
1036
The focusing property of the spiral Fibonacci zone plate
Published 2013“…According to the simulated results, the FiZPs can focus the incident beam as conventional zone plates as well but with fractal on-axis intensity profile. …”
Get full text
Get full text
Conference Paper -
1037
Cylindrical surfaces enable wavelength-selective extinction and sub-0.2 nm linewidth in 250 μm-gap silicon Fabry–Pérot cavities
Published 2013“…Our approach consists of providing a solution to the main loss mechanism in conventional FP cavities related to the expansion of the Gaussian light beam after multiple reflections inside the cavity. …”
Get full text
Get full text
Journal Article -
1038
A signal through the noise: accurate determination of hydrogen atom positions in crystal structures and optimisation of Laue neutron diffraction methods
Published 2021“…This focuses on:</p> <p>Recommendations for the efficient collection of Laue neutron data, in order to optimise the data set completeness and awarded beam-time; strategic considerations for how to best answer the scientific question(s) at hand in a Laue neutron experiment, whilst planning against future contingencies; improving methods for crystal packing and shipping, particularly for air and moisture sensitive materials; discussing issues arising from ice forming on the crystal during a Laue neutron diffraction experiment, and methods for minimising this problem; more effectively modelling disorder using ring shapes, in the crystallographic refinement package CRYSTALS; providing rationale for Laue neutron specific checkCIF comments.…”
Thesis -
1039
-
1040
Financial constraints of ASEAN firms: impact alleviation by ESG pillars
Published 2024Get full text
Article