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241
Fabrication and characterization of Algan/Gan high electron mobility transistors on silicon
Published 2016“…Although the fabrication cost of GaN-based devices can be reduced significantly through the incorporation with Si technology, there are several challenges which impede the incorporation of GaN-based devices with Si technology. …”
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Thesis -
242
Localization of chiral edge states by the non-hermitian skin effect
Published 2024“…In a gyromagnetic photonic crystal exhibiting the quantum Hall topological phase, an appropriately structured loss configuration imparts the edge states' complex energy spectrum with a feature known as point-gap winding. …”
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Journal Article -
243
A comprehensive study of laser irradiated hydrothermally synthesized 2D layered heterostructure V2O5(1−x)MoS2(x) (X = 1–5%) nanocomposites for photocatalytic application
Published 2024“…The surface of the 2D molybdenum nanolayered matrix was efficaciously decorated with V2O5 nanoparticles. The crystal phase and layered structures of the V2O5(1−x)MoS2(x) (X = 1–5% w/w) nanocomposites samples were verified by X-ray diffraction and scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy respectively. …”
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Article -
244
Design of optical building blocks for photonic integration
Published 2008“…Defect states within the photonic bandgaps behave like either donor or acceptor modes similar to other photonic crystals. The results based on transfer matrix model shows reasonable agreement with finite difference time domain (FDTD) simulations.…”
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Research Report -
245
Elucidation of the ion transport mechanisms in CorA, a divalent cation transporter.
Published 2013“…Studying the sequence homology between these two subgroups as well as the existing crystal structures, have provided me with new leads into identifying key residues for ion transport. …”
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Thesis -
246
Supported Lipid Bilayer Platform To Test Inhibitors of the Membrane Attack Complex: Insights into Biomacromolecular Assembly and Regulation
Published 2016“…To address this issue, we employ a biomimetic supported lipid bilayer platform to investigate how two MAC inhibitors, vitronectin and clusterin, interfere with MAC assembly in a sequential addition format, as monitored by the quartz crystal microbalance-dissipation (QCM-D) technique. …”
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Journal Article -
247
Synthetic, spectroscopic, biological and X-ray crystallographic structural studies on a novel pyridine-nitrogen-bridged dimeric nickel(II) complex of a pentadentate N3S2 ligand
Published 2001“…The complex crystallizes in the monoclinic system, space group C2/c, with a = 15.849(2), b = 18.830(2) and c = 18.447(2) Å and α = 90°, β = 102.179(6)°, γ = 90° and Z = 8. …”
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Article -
248
Data-driven methods to predict the stability metrics of catalytic nanoparticles
Published 2023“…Important metrics for the stability of nanostructures include the chemical potential of supported nanoparticles, cohesive energies of nanoparticles, surface and adhesion energies of crystal planes that bound the nanoparticle, and segregation energies in bimetallic nanoparticles. …”
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Journal Article -
249
Electrical properties of neodymium oxide/titanium dioxide and neodymium oxide/gadolinium silicate dielectric gate stack on silicon substrate
Published 2012“…The thickness of each dielectric gate stack is approximately 6nm. Crystal structure of Neodymium oxide and Titanium dioxide film crystallize upon annealing, while Gadolinium silicate remains amorphous. …”
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Final Year Project (FYP) -
250
Topochemical cation exchange reactions of Ruddlesden-Popper oxides
Published 2024“…</p> <p>The reaction between Li2CaTa2O7 and anhydrous transition metal chlorides at elevated temperatures yielded single-phase samples of the metastable phases FeCaTa2O7, CoCaTa2O7, and ZnCaTa2O7. …”
Thesis -
251
Light-matter interactions in high quality manganese-doped two-dimensional molybdenum diselenide
Published 2022“…Herein we realized manganese-doped molybdenum diselenide (MoSe2) single crystal via chemical vapor transport (CVT) reaction, containing up to 2.9% (atomic concentration) Mn dopants, and investigated the light-matter interaction in these samples. …”
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Journal Article -
252
Ultra-thin oxide films
Published 2016“…<p>Oxide ultra-thin film surfaces have properties and structures that are significantly different from the terminations of the corresponding bulk crystals. For example, surface structures of epitaxial ultra-thin oxide films are highly influenced by the crystallinity and electronegativity of the metal substrates they grown on. …”
Thesis -
253
Edge-on orientation of thermally evaporated metal phthalocyanines thin films for humidity sensing application
Published 2024“…The quantitative and qualitative information, such as crystal coherence length, grain size, and lattice spacing obtained from the GIWAXS and GISAXS, have been studied to explain the humidity sensors’ sensitivity, hysteresis, and transient response. …”
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254
Design, characterization and properties of nitrogen-containing novel organic N-type materials
Published 2013“…Although a lot of n-type organic materials have been reported,this research will specially focus on N-substituted polycyclic aromatic hydrocarbons(PAHs)because Houk et al predicted that the azaacenes have high electron affinities and could be promising candidates for n-type semiconducting materials.In fact,some N-heteroacenes have already shown decent electron mobility.Moreover,N-heteroacenes are more stable(resistive to oxidation or dimerization).In addition,the physical properties of n-substituted heteroacenes strongly depend on the number,position and valence states of nitrogen atoms.These progresses strongly encourage me to prepare larger azaacenes In this thesis,I have designed,synthesized and characterized several new azaacenes,which are expected to exhibit good performance in electronic devices.I developed a simple and efficient method(one or two steps)to prepare targeted azaacenes through condensation reaction starting from commercially available materials.All as-prepared compounds are very stable and have lower bandgaps.Phototransistors based on 6,8,15,17-tetraaza-1.18,4.5,9.10,13.14- tetrabenzoheptacene(TTP)single crystals have been fabricated and this device exhibited excellent performance in amplifying and converting light signal under the photoconductive effect.In addition,9,11,13,22,24,26-hexaza-tetrabenzo[a,c,l,n]heptacene(HATBH)can act as an efficient anion sensor for naked-eye detection of F- and H2PO4- anions and 9,26-dihydro 9,11,13,22,24,26-hexaza-tetrapyrido[3,2-a: 2’,3’-c:3”,2”-l:2”’,3”’-n]heptacene(DHATPH)can selectively sense F- anion among TEN anions(F-,Cl-,Br -,I-,PF6-,HSO4-,NO3-,BF4-,AcO-,and H2PO4-). …”
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Thesis -
255
Three-dimensional photonic topological insulator without spin-orbit coupling
Published 2023“…For example, in the recently demonstrated three-dimensional (3D) PTI, the topological surface states emerge, not on the surface of a single crystal as in a 3D topological insulator, but along an internal domain wall between two PTIs. …”
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Journal Article -
256
Investigation of solar cell carrier lifetime using photoconductance lifetime measurements
Published 2020“…Consequently, such solution based TMOs are attractive for the fabrication of Si/TMO solar cells. …”
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Final Year Project (FYP) -
257
Synthesis and Characteristics of Transferrable Single‐Crystalline AlN Nanomembranes
Published 2024“…Potentially, the novel approach opens a viable path for the development of the AlN‐based heterogeneous integration and future novel electronics and optoelectronics.…”
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Article -
258
Electrochemical supercapacitors: from mechanism understanding to multifunctional applications
Published 2022“…The full mechanistic understanding of SCs based on different electrode materials has not yet been realized. …”
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Journal Article -
259
Shape-controlled synthesis and application of one-dimensional cadmium chalcogenide nanocrystals
Published 2009“…In this work, three catalyst-free and solution-based methods were used for the synthesis of 1D cadmium chalcogenide nanocrystals. …”
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Thesis -
260
Preparation and characterization of polypropylene/clay nanocomposites
Published 2010“…Characteristic peaks of the PP α-phase crystallites were observed in the XRD graph of the PPCNs. …”
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Final Year Project (FYP)