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Optical properties of ultrathin metal oxide and metal films : effect of free electrons, quantum confinement and localized surface plasmon resonance
Published 2016“…The comparison study of the free electrons between the undoped ZnO and AZO shows that free electrons could greatly suppress the excitonic absorption near the band edge and result in an expansion of band gap due to the free electrons effect. …”
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Thesis -
43
Terahertz conductivity of topological surface states in Bi1.5Sb0.5Te1.8Se1.2
Published 2014“…Furthermore, from the surface Drude contribution, we obtain a ~98% transmission through one surface layer — this is consistent with the transmission through single-layer or bilayer graphene, which shares a common Dirac-cone feature in the band structure.…”
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Journal Article -
44
Multiband and wideband 90° polarization rotators
Published 2019“…Inspired by techniques utilized in the design of frequency-selective surfaces (FSSs), multi-band and wideband 90° polarization rotators are proposed in this letter. …”
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Journal Article -
45
Reconfigurable antennas for GSM and WLAN applications
Published 2013“…A prototype antenna was fabricated with commercially available diodes used for switching between the two frequency bands. DC biasing lines were drawn from the top surfaces of the nested antenna. …”
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Thesis -
46
Improved 3-D frequency-selective structures and their applications
Published 2019“…By employing the 3-D concept, a multiband high-order bandstop frequency-selective surface, a wideband absorber with a thin structure, and an absorptive frequency-selective transmission structure with wide absorption bands are accomplished. …”
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Thesis -
47
Electronic structures of twisted two-dimensional materials studied by angle-resolved photoemission spectroscopy
Published 2021“…Chiral semimetals the PtGa family (PtGa, PtAl,PdGa) are expected to host topologically non-trivial electronic structure, such as the multi-fold band crossings with large Chern number at high symmetry points connected by long Fermi-arc surface states. …”
Thesis -
48
Electronic structure of topological quantum materials probed by angle-resolved photoelectron spectroscopy
Published 2017“…Our ARPES studies of intrinsically hole doped Sr<sub>3</sub>SnO, Ca<sub>3</sub>PbO, and Sr<sub>3</sub>PbO find good agreement with bulk band structure calculations, but cannot probe the predicted bulk and surface Dirac cones in the unoccupied states. …”
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Market outlook of VLCCs in the next 5 years
Published 2011“…The report shall focus on analyzing the demand and supply factors and subsequently draw a conclusion based on their effect on the freight rates. This can be achieved by segmenting the market into 5 bands based on historical Time Charter Equivalent (TCE) namely very weak, weak, steady, strong and very strong condition and a forecast of the strength of the freight market will be derived (ie the band the market will fall in). …”
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Final Year Project (FYP) -
51
Electronic structures of topological materials studied by angle-resolved photoemission spectroscopy
Published 2024“…Although such ARPES analysers are already commercially available nowadays, a deep understanding of their fundamental principles is essential for enhancing photoelectron spectrometers and advancing the development of new electron optical instruments.<br> 2. Surface states are composed of electronic states that localize near the surface and decay exponentially into the bulk, which exhibit low-dimensional band dispersions different from the bulk states. …”
Thesis -
52
Wideband circularly polarized metasurface backed aperture antenna
Published 2013“…The measured gain is 6.97 dBic at 6.0 GHz band in the boresight direction. For planar metal surface backed octagonal-aperture antenna, the measured axial ratio bandwidth is greater than 5 dB and VSWR<2 impedance bandwidth is 99.7 %. …”
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Thesis -
53
Early color photometry of a possible type Iax supernova 2023mnc: inferring the distance and progenitor constraints
Published 2023“…The estimated date of explosion is t 0 = 60130 $t_{0}=60130$ MJD and implies a short rise time of t r i s e ≈ 16 $t_{rise} \approx 16$ days. The apparent g-band peak magnitude and the post-peak decline rate are m m a x ( g ) = − 19.52 ± 0.47 $m_{max}(g)=-19.52\pm 0.47$ mag and Δ m 15 ( g ) = 0.825 ± 1.635 $\Delta m_{15}(g)=0.825\pm 1.635$ mag, respectively. …”
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54
Near-IR and mid-IR (1.55 μm – 2 μm) silicon photonics devices on silicon-on-insulator (SOI) platform
Published 2018“…Many useful applications have been developed in the near-infrared (NIR) data- and tele- communication band (1.3-1.6 µm), such as sensors, switches, modulators, and various passive devices. …”
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Thesis -
55
Study of multidirectional forging and annealing on copper
Published 2009“…This is mainly due to formation of deformation bands such as microshear bands. This resulted in fragmentation of grain with high angle boundaries, leading to formation of small grains. …”
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Final Year Project (FYP) -
56
Ideal type-II Weyl points in topological circuits
Published 2022“…By stacking two-dimensional (2D) layers of inductor-capacitor (LC) resonator dimers with the broken parity inversion symmetry (P), we achieve a strongly tilted band structure with two group velocities in the same direction, and topological surface states in an incomplete bandgap. …”
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Journal Article -
57
Synthesis and characterization of silver nanoprism-based nanostructures
Published 2013“…Silver nanoprisms are of particular interest because their surface plasmon resonance bands are readily tunable in the visible and near-IR (NIR) region. …”
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Thesis -
58
Design and Implementation of Active Antennas for IoT-Based Healthcare Monitoring System
Published 2024“…In order to achieve a dual-band operation at 2.4 GHz, a slot in the shape of an inverted letter U is introduced, to the existing patch which generates a 5.8 GHz frequency band. …”
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59
Design and Implementation of Active Antennas for IoT-Based Healthcare Monitoring System
Published 2024“…In order to achieve a dual-band operation at 2.4 GHz, a slot in the shape of an inverted letter U is introduced, to the existing patch which generates a 5.8 GHz frequency band. …”
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60
Performance study of digital communication over high frequency channel
Published 2013“…Due to current limitations in the available frequency spectrum, it becomes necessary to harvest higher frequency bands for communication purposes. One of the available high frequency channels is the Ionospheric channel, which is well known for its uncertain behavior. …”
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Final Year Project (FYP)