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12561
On shear adhesion of adhesive fibrils
Published 2024“…Our model reveals that, depending on the fibrillar aspect ratio, the adhesive fibril exhibits three distinct deformation regimes: thin film shearing, thick block shearing, and slender beam bending. The important parameters governing the shear adhesion of the lap shear system are the aspect ratio of fibrils, elastic moduli of the fibrils and substrates, while the Poisson's ratio of fibrils has no noticeable effect. …”
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Journal Article -
12562
Bacteria-mediated anti-cancer therapy
Published 2019“…However, IB significantly inhibited the growth of the tumors and improved the survival rate of immunocompetent CT26 tumor-bearing mice. Histological analysis showed that IB increased the necrotic area in HCT116 tumors. …”
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Thesis -
12563
Export competitiveness in the context of Singapore
Published 2014“…Last but not least, we must bear in mind that Singapore is only a small economy. …”
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Final Year Project (FYP) -
12564
Non-Destructive Material Characterization Methods /
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software, multimedia -
12565
Squeezing the Quantum Noise of LIGO below the Standard Quantum Limit
Published 2024“…The SQL applies when using uncorrelated photons or coherent light to measure the object, such as a laser beam. However, introducing quantum correlations through squeezed light, a technique called squeezing (Chapter 2), can circumvent this limit. …”
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Thesis -
12566
Surface plasmon resonance (SPR) enhanced biosensors
Published 2016“…The fabrication steps of the arrays were composed of electron-beam lithography and nano-imprint lithography. In comparison with the PAuNH array, the AuNH array offered higher field enhancement for fluorescence when only LSP was excited. …”
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Thesis -
12567
SPP/LSP coupled hybrid mode directed multi-functional surface-enhanced Raman system
Published 2013“…In the experiment, SPPs are excited by a tightly-focused radially polarized beam and interact with the nanospheres to generate the plasmon-hybrid-mode, exactly according to the second configuration aforementioned. …”
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Thesis -
12568
Hybrid lasers and modulator on silicon in the near- and mid-infrared region
Published 2017“…The lateral grating can be fabricated by CMOS-compatible inline lithography, which avoids the use of expensive and time-consuming electron beam lithography. The device works at room temperature with the single-side-suppression-ratio (SMSR) of 20 dB and the threshold current density is 1.54 kA/cm2. …”
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Thesis -
12569
Selected Problems of Solid Mechanics and Solving Methods /
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software, multimedia -
12570
Developments in THz Polaritonics: Towards Integrated Nonlinear THz Spectroscopy
Published 2024“…The optical pump light is focused onto the bevel, after which it refracts and becomes confined within the waveguide by total internal reflection. This allows the pump beam to repeatedly drive the generated THz field during its multiple back-and-forth traversals within the LN slab. …”
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Thesis -
12571
Fabrication and characterization of graphene and carbon nanotube reinforced bioceramic nanocomposites
Published 2020“…Bioceramics play an important role in the replacement and regeneration of human tissues, but their intrinsic brittleness and low wear resistance make the monolithic bioceramics still problematic for load-bearing applications. The two dimensional (2D) graphene and one dimensional (1D) carbon nanotube (CNT), as the secondary strong and tough biocompatible nanofillers, are popular nanocarbons to reinforce bioceramics. …”
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Thesis-Doctor of Philosophy -
12572
Engineered terahertz emission from spintronic heterostructures: amplitude, phase and chirality
Published 2023“…To summarize, the thesis aims to contribute to the synergies of spintronics and photonics for advanced applications in developing scalable devices bearing low-cost fabrication with on-chip compatibility.…”
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Thesis-Doctor of Philosophy -
12573
Investigations into femtosecond laser hybrid manufacturing for 3D power sources
Published 2021“…These VPGs are then demonstrated as active beam steering units and tuneable spectroscopic optical elements. …”
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Thesis-Doctor of Philosophy -
12574
Compositionally graded alloys fabricated using the laser powder bed fusion technique
Published 2023“…In this study, among the several available AM processes, the LPBF technique is selected to fabricate compositionally graded alloys, as it has higher spatial resolution and lower cost, compared to directed energy deposition (DED) and electron beam powder bed fusion (EBPBF). With three different LPBF setups and four alloy systems examined in this study, the following objectives are achieved: (i) screening out, from a large range of compositions, the alloys that are amenable to LPBF, (ii) examining the effects of the LPBF characteristics, e.g., rapid cooling rate, on the micro-/meso-structure and properties of the fabricated parts with varying chemical compositions, and (iii) evaluating the fabrication methods in terms of types of achieved gradation (stepwise or smooth), efficiency, and level of chemical segregation. …”
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Thesis-Doctor of Philosophy -
12575
Synthesis and characterization of Cu-Chalcogenide nanocrystals for potential applications in low-cost solar cells
Published 2013“…Since the opto-electrical properties of the NCs are highly dependent on the composition and crystal structure, X-ray diffraction, selected area electron diffraction, convergent beam electron diffraction and Raman spectroscopy were used to determine their crystal structure. …”
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Thesis -
12576
Enhancing tensile and fatigue properties of additively manufactured alloys by post-processing heat treatment
Published 2022“…Amongst the different AM techniques, laser beam-powder bed fusion (LB-PBF) is the most abundantly investigated process due to its deep market penetration as well as the vast number of LB-PBF machine manufacturers. …”
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Thesis-Doctor of Philosophy -
12577
A combined numerical and experimental approach to investigations of body-freedom flutter on flying wings
Published 2024“…The structural dynamics are modelled using an Euler-Bernoulli beam which is tightly coupled with the rigid-body motions of the flying wing, and subsequently discretised using the finite-element method. …”
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Thesis-Doctor of Philosophy -
12578
Investigations into high resolution imaging and contouring for diagnostic bio-applications
Published 2016“…Thermal perturbation of the target tissue with infrared beam was used to effect the required change in the bio-speckle pattern. …”
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Thesis