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921
Study of a 1 eV GaNAsSb photovoltaic cell grown on a silicon substrate
Published 2014“…We report the performance of a 1 eV GaNAsSb photovoltaic cell grown on a Si substrate with a SiGe graded buffer grown using molecular beam epitaxy. For comparison, the performance of a similar 1 eV GaN0.018As0.897 Sb 0.085 photovoltaic cell grown on a GaAs substrate was also reported. …”
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Journal Article -
922
Low temperature grown GaNAsSb : a promising material for photoconductive switch application
Published 2013“…The GaNAsSb layer was grown at 200 °C by molecular beam epitaxy in conjunction with a radio frequency plasma-assisted nitrogen source and a valved antimony cracker source. …”
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Journal Article -
923
Additive manufacturing of NiTi shape memory alloys using pre-mixed powders
Published 2019“…This work presents a comparative study on the in-situ alloying of NiTi shape memory alloys (SMAs) by directed energy deposition (DED), selective laser melting (SLM) and selective electron beam melting (SEBM) processes using pre-mixed Ni-Ti powders. …”
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Journal Article -
924
Large-area atomic layers of the charge-density-wave conductor TiSe2
Published 2020“…However, the syntheses of monolayer and large-area 2D CDW conductors can currently only be achieved by molecular beam epitaxy under ultrahigh vacuum. This study reports the growth of monolayer crystals and up to 5 × 105 µm2 large films of the typical 2D CDW conductor-TiSe2 -by ambient-pressure chemical vapor deposition. …”
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Journal Article -
925
Polymeric composites for powder-based additive manufacturing : materials and applications
Published 2020“…As one of the most important categories in the additive manufacturing (AM) field, powder-based techniques, such as selective laser sintering, electron beam melting and selective laser melting, utilize laser or electronic beams to selectively fuse polymeric, metallic, ceramic or composite powders layer-by-layer into desired products according to their computer-aided design models. …”
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Journal Article -
926
Orbital angular momentum transmission based on satellite formation relay in space communications
Published 2023“…Orbital Angular Momentum (OAM) transmission is expected to be implemented for large capacity communication. However, the conical beam and the coaxial all-phase reception brings painful difficulties. …”
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Conference Paper -
927
Study on the mechanical properties of multi jet fusion 3D printed PA12 lattice structures
Published 2023“…However, MJF and HSS use inkjet-dispensed agents and a heating element while SLS fuses the powder material through the use of a directed laser beam. Products manufactured by MJF feature a good surface finish, good feature resolution, and consistent mechanical properties, making them appealing to consumers. …”
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Final Year Project (FYP) -
928
Multi-IRS empowered terahertz wireless communication over generalized fading
Published 2024“…To mitigate these limitations and leverage the unique advantages of the THz band, this study investigates a multi-IRS-empowered THz system that incorporates design parameters such as transceiver antenna gains, operation frequency, link distances, molecular absorption losses, beam misalignment, transceiver hardware imperfections, and statistical characteristics of the THz channel. …”
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Conference Paper -
929
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) -
930
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 -
931
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 -
932
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 -
933
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 -
934
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 -
935
New exposure room shielding incorporated with ferro boron concrete for neutron radiography imaging (NURI) facility at TRIGA PUSPATI Research Reactor.
Published 2022“…The NURI facility had been undergoing major upgrading for all their instrument including beam collimator, imaging system, sample positioning, instrumentation shielding, and exposure room shielding. …”
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Conference or Workshop Item -
936
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 -
937
Developing a portable, high-speed, low-cost desktop photoacoustic tomography imaging system
Published 2019“…Usually Nd:YAG-OPO laser is bulky, heavy and needs an optical table to deliver non-fluctuating laser beam and it needs external op- tics (reflectors/prisms) to direct the laser beam onto the sample (there are portable OPO lasers from OpoTek, EKSPLA, and various other companies that do not require optical table but they are more expensive than conventional Nd:YAG-OPO lasers). …”
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Thesis -
938
Study of circulation of traffic agents at the road-side bus-stops
Published 2024“…Clear signage can further guide traffic agents, reducing potential conflicts and supporting Singapore's goal of becoming a "car-lite" nation. These findings have significant implications for improving bus-stop designs, ultimately enhancing the safety of pedestrians and bus commuters at bus-stops.…”
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Final Year Project (FYP) -
939
Measurement of the background in the CMS muon detector in 𝑝𝑝 -collisions at √𝑠 =13 TeV
Published 2024“…While some backgrounds result from natural radioactivity, cosmic rays, and interactions of the circulating protons with residual gas in the beam pipe, the dominant source of background hits in the muon system arises from proton–proton interactions themselves. …”
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Article -
940
Experimentally validated raman Monte Carlo simulation for a cuboid object to obtain raman spectroscopic signatures for hidden material
Published 2015“…In addition, we demonstrate through simulations the effects of the absorption and scattering coefficients of the layers, and that of the diameter of the excitation beam. The advantage of collecting light from all possible 4π angles, over other collection modes is that this technique is not geometry specific and molecular identification of layers underneath nontransparent surfaces can be obtained with minimal interference from the surface layer. …”
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Journal Article