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141
Interface energetics and dynamics in organic-inorganic hybrid perovskites
Published 2019“…In the second part of the work, a successful homemade TR-2PPE system was set up, and preliminary studies on CsPbBr3 single crystals found that hot carriers generated through carrier-carrier scattering ∼1 eV above the conduction band edge possess long lifetimes ∼3 ns under resonant excitation due to strong band-filling and long lifetimes of band edge carriers in single crystals which hinder hot carrier cooling. …”
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Thesis -
142
Strong electron–phonon coupling in magic-angle twisted bilayer graphene
Published 2024“…Calculations suggest that the formation of these flat-band replicas in superconducting MATBG are attributed to the strong coupling between flat-band electrons and an optical phonon mode at the graphene K point, facilitated by intervalley scattering. …”
Journal article -
143
Studies on plasma assisted molecular beam epitaxial growth of GaN-based multilayer heterostructures on Si for photodetector application
Published 2019“…III-Nitride materials have gathered enormous attention and undergone fast development, due to superior properties such as wide band gap, high stability, high electron motilities, high break down voltage and sensitivity to ultraviolet light. …”
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Thesis -
144
Electronic structures of twisted two-dimensional materials studied by angle-resolved photoemission spectroscopy
Published 2021“…We only observe the Γ-valley moiré bands but not the proposed K-valley moiré band. In addition, we have unambiguously identified the real-space honeycomb- and kagome-shaped charge distributions at the moiré length scale, which are associated with Γ-valley moiré bands. …”
Thesis -
145
SU(3) topological insulators in the honeycomb lattice
Published 2019“…While SU ( 2 ) spin-orbit couplings always lead to time-reversal symmetric tight-binding models, and thereby to topologically trivial band structures, suitable SU ( 3 ) spin-orbit couplings can break time-reversal symmetry and lead to topologically nontrivial bulk band structures and to edge states in the strip geometry. …”
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Journal Article -
146
Raw GNSS measurements from smartphones
Published 2020“…On the other hand, L5 frequency band signal significantly improved the performance of Mi 9 from 20-40% in term of position accuracy comparing to the ground-truth references. …”
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Final Year Project (FYP) -
147
Effect of blood flow restriction on leg extension exercise on post activation potentiation in countermovement jump performance/standing broad jump performance
Published 2021“…Participants were further randomized into 2 groups, one group performed the leg extension exercise with bands first, and the other without bands first. The BFR bands were placed with a perceived tightness of about 7 out of 10. …”
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Final Year Project (FYP) -
148
Two-dimensional electronic spectroscopy of the Qx to Qy relaxation of chlorophylls a in photosystem II core complex
Published 2022“…Initial excitation in the Qx band results in a transfer to the Qy band in less than 60 fs. …”
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Journal Article -
149
Mm-wave CMOS phase-locked loops
Published 2014“…Fifthly, a low phase noise 24/77 GHz dual-band sub-sampling PLL with a dual-band VCO was proposed for automotive radar applications. …”
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Thesis -
150
Effects of free electrons and quantum confinement in ultrathin ZnO films : a comparison between undoped and Al-doped ZnO
Published 2013“…Band gaps and exciton binding energies of undoped and Al-doped ZnO thin films were determined from optical absorption measurement based on the Elliott’s exciton absorption theory. …”
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Journal Article -
151
LoRa Microstrip Patch Antenna: A comprehensive review
Published 2024“…The study has categorized these LoRa MPAs – including monopole, Planar Inverted F Antenna (PIFA), dipole, yagi-uda, and array – into single band, dual-band, multiband, and wearable antennas, thus providing substantial viewpoints on their diverse design architectures and performance characteristics. …”
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Article -
152
Investigating the charge separation and transport in iron based photoanodes for solar-driven water splitting
Published 2016“…To enhance charge separation and transport in pristine Fe2O3 nanorods, it was coupled with Fe2TiO5 thin films to form a Fe2O3/Fe2TiO5 heterojunction, which according to their band level positions share a type II band alignment. …”
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Thesis -
153
Research on Wi-Fi location algorithm based on TDOA and RSSI
Published 2020“…At the same time, due to the better stability and signal strength of dual-band Wi-Fi, dual-band Wi-Fi is used to improve the accuracy of positioning. …”
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Thesis-Master by Coursework -
154
Bit-error rate simulation for frequency-hopped multiple-access systems over fading channels
Published 2012“…Due to the effects of multiple-access interference, partial-band or multi-tone jamming and fading channels, the performance of frequency-hopped multiple-access could be degraded. …”
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Final Year Project (FYP) -
155
Communication satellite power amplifiers: current and future SSPA and TWTA technologies
Published 2017“…We find an increase in output power from the 1993 study of >200% for Ku-band TWTAs and C-band SSPAs, and >1000% increase for C-band TWTAs. …”
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Article -
156
Magnetic oscillation of optical phonon in ABA- and ABC-stacked trilayer graphene
Published 2015“…Whereas in ABA-stacked TLG, we observe magnetophonon oscillations consistent with single-bilayer chiral band doublets, the features are flat for ABC-stacked TLG up to magnetic fields of 9 T. …”
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Journal Article -
157
Molecular beam epitaxy of dilute nitride indium antimonide materials for long wavelength infrared application
Published 2014“…By adding a small amount of N into InSb, the band gap is found to decrease and this is useful for long wavelength infrared detector application. …”
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Thesis -
158
Synthesis and characterization of Cu-Chalcogenide nanocrystals for potential applications in low-cost solar cells
Published 2013“…The optical and electrochemical band gap of CuInxGa1-xSe2 NCs increases as the Ga content increases. …”
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Thesis -
159
Solution based synthesis of Cu2ZnSnS4 nanoparticles and thin films for solar cell application
Published 2014“…The valance band and conduction band energy levels are determined using CV measurements to be -5.37 and -3.85 eV (kesterite), -5.60 and -3.91 eV (wurtzite). …”
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Thesis -
160
Near-IR and mid-IR (1.55 μm – 2 μm) silicon photonics devices on silicon-on-insulator (SOI) platform
Published 2018“…Furthermore, the mid-infrared (MIR, 2-15 μm) band is also very crucial as many gases and molecules have unique absorption fingerprints in this regime. …”
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Thesis