-
641
Magnetism in graphene oxide induced by epoxy groups
Published 2015“…Local density approximation calculation results well reproduce the magnetic moments obtained from experiments, and these results indicate that the unpaired spin induced by the presence of epoxy groups is the origin of the magnetism. …”
Get full text
Get full text
Journal Article -
642
A variational master equation approach to quantum dynamics with off-diagonal coupling in a sub-Ohmic environment
Published 2016“…A master equation approach based on an optimized polaron transformation is adopted for dynamics simulation with simultaneous diagonal and off-diagonal spin-boson coupling. Two types of bath spectral density functions are considered, the Ohmic and the sub-Ohmic. …”
Get full text
Get full text
Journal Article -
643
Exchange coupling and coercivity enhancement in cuprate/manganite bilayers
Published 2013“…The temperature dependent magnetization data indicate an interfacial spin-glass state. Furthermore, the bilayer exhibits significant enhancement of coercivity compared to the La0.70Sr0.30MnO3 single layer and reaches 705 Oe at 5 K. …”
Get full text
Get full text
Journal Article -
644
Fabrication of large-area ordered Au nano-ring arrays for the electrochemical removal and sensing of rhodamine 6G molecules
Published 2024“…The ordered Au NRA could perform the electrochemical removal of rhodamine 6G (R-6G) at a high concentration in seawater within 12 min and complete discoloration within 9 min, which demonstrates ~7 times efficiency improvement from previous studies. …”
Get full text
Journal Article -
645
Optimization of operational conditions for continuous membrane distillation crystallization process with zero discharge
Published 2013“…Results from the analysis were verified experimentally, and it was deduced that a feed flow rate and temperature of 0.64 L/min and 338 K respectively, together with a permeate flow rate of 0.35 L/min and permeate temperature of 303 K, gave the highest production rates of pure water and sodium chloride crystals. …”
Get full text
Final Year Project (FYP) -
646
A simple capillary column GC method for analysis of palm oil-based polyol esters
Published 2002“…Analysis was performed using a high-temperature capillary column, SGE HT5 operated at a temperature gradient of 6°C/min starting from 80 to 340°C. Before injection, the sample was derivatized with N,Obis(trimethylsilyl)trifluoroacetamide in ethyl acetate ar 40°C for at least 10 min. …”
Get full text
Article -
647
Accelerated discovery of new catalysts for oxygen evolution reaction
Published 2023“…The Fe3+ ions also promote the oxidation of Co species to form active oxyhydroxide phase. The high spin of Mn3+ ions (t2g3 eg1) can easily bond with OH– ions leading to high OER activity. …”
Get full text
Thesis-Doctor of Philosophy -
648
Disorder–property relationships in magnetic and pseudospin framework materials
Published 2023“…The ordering temperature of magnetic spins in framework materials is low—typically around a few Kelvin. …”
Thesis -
649
-
650
Performance improvements of microchannel heat sink using wavy channel and nanofluids
Published 2015“…Three wave amplitudes of 25 μm, 50 μm and 75 μm with two wavelength of 250 μm and 500 μm at volumetric flow rate ranges from 0.152 L/min to 0.354 L/min are considered. Three different types of nanofluids with volume concentration ranges from 1% to 5% are applied. …”
Get full text
Get full text
Journal Article -
651
A composite electrode of TiO2 nanotubes and nanoparticles synthesised by hydrothermal treatment for use in dye-sensitized solar cells
Published 2013“…Under the same treatment duration (i.e., 45 min), but using different nanotube lengths, nanoparticle formation was found to be accelerated in the longer tubes. …”
Get full text
Get full text
Journal Article -
652
Thermal and mechanical assessments of the 3D-printed conformal cooling channels : computational analysis and multi-objective optimization
Published 2021“…As for the circular channel, the coolant temperature, volume flow rate, and channel diameter are selected as the parameters within the ranges of 288.0-298.0 K, 1.0-10.0 L/min, and 2.1-2.5 mm, respectively. According to these parameters, the multi-objective optimization study is performed and the best trade-off point is found at the channel diameter of 2.5 mm, coolant temperature of 297 K, and the flow rate of 1 L/min when all the objectives have equal weights in the optimization problem.…”
Get full text
Journal Article -
653
Numerical methods for finite-size key rates with different entropic bounds in quantum key distribution
Published 2024“…Following the ideas of Dupuis, we also formulated a generalized alpha-Renyi entropic bound on the secret key rate under i.i.d. collective attack, and showed regions of improvement from the conventional approach of using the smooth min-entropy. In particular, we proposed a generalized optimization method for the Renyi entropy for alpha = (1,2] and the min-entropy by adapting from Winick et al.'…”
Get full text
Final Year Project (FYP) -
654
Simulation and investigation of Gradient Refractive Index Profile (GRIP) and photonic effect in micro-fluidic waveguide of different geometries
Published 2013“…With the aid of professional software COMSOL’s Microfuildic model and RSoft’s beamprop module by designing liquid core and liquid cladding waveguides of different shapes including rectangle ,up-trapezoid, down-trapezoid, para-saddle and para-rhombus and injecting deionized water with refractive index of 1.335 into liquid core and 5M CaCl2 solution into liquid core at from 1ul/ min to 15 ul / min , the GRIN profiles and optical effects like chirped focusing and interference vary accordingly .The purpose of the study is to find the pattern of how the GRIN profile and optical effects change with the composition ,flow rate and shape.…”
Get full text
Final Year Project (FYP) -
655
Carbon aerogel for removal of oils and organic solvents spills
Published 2016“…A slower heating rate of 10°C/min produces a better sorption capacity aerogel than at 15°C/min. …”
Get full text
Final Year Project (FYP) -
656
Multi-valued logic synthesis for Resistive Random Access Memory (RERAM) based in-memory computing
Published 2018“…The synthesis of multivalued functions consists of bi-decomposition or functional decomposition of the given target function to obtain a multilevel network comprising of MIN and MAX gates. Synthesis tools, such as YADE and those based on Multi-valued decision diagrams make the implicit assumption regarding the availability of literals or CASE operator, while focusing on the optimization of the logic network solely based on the MIN and MAX gates. …”
Get full text
Thesis -
657
Oxidation-etching preparation of MnO2 tubular nanostructures for high-performance supercapacitors
Published 2013“…Polycrystalline MnO2 nanotubes are formed with a short reaction time (e.g., 10 min) while hierarchical tubular MnO2 nanostructures composed of assembled nanosheets are obtained at longer reaction times (>45 min). …”
Get full text
Get full text
Journal Article -
658
-
659
A comparison of taxation in Vietnam and Myanmar
Published 2014Get full text
Final Year Project (FYP) -
660
Pulsed-laser-ablated gold-nanoparticles saturable absorber for mode-locked erbium-doped fiber lasers
Published 2022“…The resulting nanocomposite was deposited on the tapered region of a microfiber with a spin-coating method. The proposed Au-NPs SA recorded a modulation depth of 0.4% and low saturation intensity of 0.1 MW/cm2 leading to stable mode-locking operation in the erbium-doped fiber laser cavity at a low threshold pump power of about 45.6 mW. …”
Get full text
Get full text
Article