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61
Low temperature photoresponse of monolayer tungsten disulphide
Published 2014“…These findings are discussed in terms of charge trapping and localization.…”
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Journal Article -
62
Mitigating initial capacity loss for practical lithium-ion battery
Published 2021“…While numerous promising anode materials with optimized electrochemical performance, such as fast-charging capability and long-term stability have been developed, they still suffer from low initial Coulombic efficiency (ICE) due to solid electrolyte interphase (SEI) formation and lithium trapping, which impede their commercialization. In this thesis, new insights and strategies for the two mechanisms leading to initial capacity loss (ICL) based on different type of anode materials were investigated.…”
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Thesis-Doctor of Philosophy -
63
Robotic manipulation of microscopic objects using multiple laser-driven fingertips
Published 2017“…In the research, multiple optically trapped micro-beads are first utilized as the laser-driven fingertips, and several control techniques will then be explored to achieve various manipulation tasks, which are beyond the capability of manipulation using single optical trapping. …”
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Thesis-Doctor of Philosophy -
64
Pseudospin dynamics in multimode polaritonic Josephson junctions
Published 2013“…In particular, it can lead to renormalization of the oscillation frequency, appearance of higher order harmonics, and induce transition between the regimes of free Josephson oscillations and macroscopic quantum self-trapping.…”
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Journal Article -
65
Synthesis, characterization, and bipolar transporting behavior of a new twisted polycyclic aromatic hydrocarbon: 1′,4′-Diphenyl-naphtho-(2′.3′:1.2)-pyrene-6′-nitro-7′-methyl carbox...
Published 2012“…An asymmetric twistacene, 1′,4′-diphenyl-naphtho-(2′.3′:1.2)-pyrene-6′-nitro-7′-methyl carboxylate (tetracene 2), was synthesized by using benzyne-trapping chemistry. Its structure, determined by X-ray crystallography, confirmed that this material has a twisted topology with torsion angles as high as 23.8(3)°. …”
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Journal Article -
66
Preparation of MoS2-polyvinylpyrrolidone nanocomposites for flexible nonvolatile rewritable memory devices with reduced graphene oxide electrodes
Published 2013“…These experimental results prove that the electrical transition is due to the charge trapping and detrapping behavior of MoS2 in the PVP dielectric material. …”
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Journal Article -
67
Effective small organic molecule as a defect passivator for highly efficient quasi-2D perovskite light-emitting diodes
Published 2024“…The small organic molecule can passivate defects on the grain surround and surface of perovskite crystal structures, preventing nonradiative recombination and charge trapping. In this study, a new small organic additive called 2, 8-dibromodibenzofuran (diBDF) is reported and examines its effectiveness as a passivating agent in high-performance green quasi-2D PeLEDs. …”
Journal article -
68
C-F bond activation by transient phosphenium dications
Published 2015“…Evidence for the existence of transient dicationic species was obtained by trapping the dication 4a2+ with PMe3. According to theoretical analysis, the low-lying lowest unoccupied molecular orbitals of these species were responsible for the observed activation of C–F bonds.…”
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Journal Article -
69
Perovskite light emitting transistors
Published 2022“…Unfortunately, PeLETs suffer from low brightness and environmental instability related to intrinsic material limitations, such as temperature-activated trapping, ionic motion and polarization effects, which limit device performance and stability at ambient conditions. …”
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Final Year Project (FYP) -
70
Blue shift in photoluminescene of semiconductor nanostructures
Published 2009“…The bond-order-length-strength (BOLS) correlation indicates that the atomic coordination imperfection causes the remaining bonds of the under-coordinated atom to contract spontaneously associated with bond strength gain and the interatomic trapping potential well depression. This project also involved the study of the entire band structure such as the band gap expansion, core-level shift, Stokes shift (electron-phonon interaction), and dielectric suppression (electron polarization). …”
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Final Year Project (FYP) -
71
Organic ferroelectric memory devices based on resistive switching
Published 2013“…On the other hand, mutual combination of SAM’s fixed dipole and ferroelectric’s polarizable dipole is employed to realize ferroelectric field effect transistor devices with tailored operational parameters, reduced charge trapping and improved retention stability. The final part of the thesis demonstrates novel organic resistive switching memory concept based on ferroelectric tunnel junction. …”
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Thesis -
72
Silicon nanowires for photovoltaics : from the material to the device
Published 2018“…Indeed solar cells based on SiNW s benefit from their outstanding optical properties such as extreme light trapping and very low reflectance. In this research project, we have fabricated disordered SiNWs using a low-cost top-down approach named the Metal-Assisted-Chemical-Etching process (MACE). …”
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Thesis -
73
Parameter extraction of solar cells
Published 2015“…Although this low absorption coefficient can be overcome by light trapping, researchers have started looking into the context of organic solar cell. …”
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Final Year Project (FYP) -
74
CFD analysis of flow across adjacent buildings with concave roof structure using large-eddy simulation (LES)
Published 2017“…On top of this application, the concave roof structure also provides a method of trapping onto the water instead of letting the rainwater flow down the roof, which can help reduce the chances of flash floods during heavy monsoon seasons. …”
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Final Year Project (FYP) -
75
The effects of dub-off angle on chip evacuation in single-lip deep hole gun drilling
Published 2016“…This is demonstrated through a case study on improving the shoulder dub-off design of commercial gun drills, which have a high tendency in trapping chips at the hole bottom. A more effective design criterion for the shoulder dub-off is thus proposed.…”
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Journal Article -
76
Effective dynamics of cold atoms flowing in two ring-shaped optical potentials with tunable tunneling
Published 2014“…In particular, we find that the macroscopic quantum self-trapping phenomenon is induced in the system if the flowing currents assume a nonvanishing difference.…”
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Journal Article -
77
Atomic-scale mechanisms of defect- and light-induced oxidation and degradation of InSe
Published 2020“…Moreover, under ambient conditions, the splitting of O2 enables the formation of substitutional (apical) oxygen atomic species, which further cause the trapping and subsequent rapid splitting of H2O molecules and ultimately the formation of hydroxyl groups. …”
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Journal Article -
78
Hole array enhanced dual-band infrared photodetection
Published 2022“…In this work, we propose a photon-trapping hole-array structure integrated in a nip InAsSb-GaSb heterostructure for the enhancement of the photoresponse in both near- and mid-infrared regions. …”
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Journal Article -
79
Three-dimensional modeling of near-field beam profiles from grating couplers using a deep neural network
Published 2024“…Integrated silicon photonics (SiPh) gratings have been widely studied for the optical addressing of trapped ions. As the formfactor of ion traps reduces, the ion-trapping height decreases, and may unavoidably fall into the reactive near-field region of SiPh gratings. …”
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Journal Article -
80
Modeling of functional materials : perovskite solar cells
Published 2014“…However, for a more holistic analysis of perovskite light harvesters as replacement to the existing TiO2 nano particles, a more nuanced modeling and analysis which incorporates a study of transport properties such as trapping effects (for further spike in efficiency), photo catalytic reaction kinetics and surface & bulk defects (for easier fabrication) is demanded as an integral part of future research plans.…”
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Final Year Project (FYP)