Showing 841 - 860 results of 860 for search '((cheers OR sars) OR ((beads OR beams) OR bee))*', query time: 0.15s Refine Results
  1. 841

    Two-dimensional transitional metal dichalcongenide heterostructures : interface optical properties by Zheng, ShouJun

    Published 2018
    “…In the hBN/TMDC/hBN heterostructure, e-beam induced e-h pairs can transfer to and be trapped in the middle TMDC layer, leading to increased recombination probability within the TMDC layer. …”
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    Thesis
  2. 842

    Novel heat treatment methodology for residual stress relieve of AlSi10Mg without compromise of mechanical strength by Lim, Chong Heng

    Published 2021
    “…Additive manufacturing (AM) has made the fabrication of complex parts possible which otherwise, would not have been possible with conventional subtractive manufacturing. Laser Beam Powder Bed (LBPB) Fusion, commonly known as Selective Laser Melting (SLM), is one of the methodologies in AM for metal fabrication. …”
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    Thesis-Doctor of Philosophy
  3. 843

    SPP/LSP coupled hybrid mode directed multi-functional surface-enhanced Raman system by Du, Luping

    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
  4. 844

    Hybrid lasers and modulator on silicon in the near- and mid-infrared region by Hu, Xiaonan

    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
  5. 845

    Pulsed fiber laser at 1 μm wavelength region by Liu, Meng

    Published 2017
    “…The optical-to-optical conversion efficiency of ~ 67% for the main amplifier and the 4σ beam quality (M2) of 1.7 is obtained. The limiting factors for high power YDPFLs (such as ASE, Stimulated Raman Scattering (SRS) and Stimulated Brillouin Scattering (SBS)) are cautiously studied and addressed. …”
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    Thesis
  6. 846
  7. 847
  8. 848

    Developments in THz Polaritonics: Towards Integrated Nonlinear THz Spectroscopy by Sung, Eric Rueyhao

    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
  9. 849

    Developing metallic cathode for low-temperature solid oxide fuel cell applications by Yu, Chen-Chiang

    Published 2017
    “…To study the stability of metallic cathode, an interfacial structure characterization method, double cantilever beam delamination, was developed to determine the triple phase boundary structure for the thin-film electrode. …”
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    Thesis
  10. 850

    Investigations into femtosecond laser hybrid manufacturing for 3D power sources by Tham, Nicholas Cheng Yang

    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
  11. 851

    Compositionally graded alloys fabricated using the laser powder bed fusion technique by Wei, Siyuan

    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
  12. 852

    Synthesis and characterization of Cu-Chalcogenide nanocrystals for potential applications in low-cost solar cells by Ahmadi, Mahshid

    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
  13. 853

    Design and analysis of passive phase shifters using controllable defected ground structures in 65nm CMOS technology for 77-81 GHz automotive radar by Wu, Jiaqi

    Published 2024
    “…Phased array radar is a low cost and promising technique to achieve high angular resolution by scanning a narrow beam in azimuth. The key enabler of a phased array radar is the phase shifter, which provides a progressive phase difference in each channel to achieve beamforming. …”
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    Thesis-Doctor of Philosophy
  14. 854

    Solution processed transition metal oxides selective contacts for Si heterojunction solar cells by Lu, Chenjin

    Published 2021
    “…In this work, we have first prepared hole selective contacts using solution processed MoOx (s-MoOx) by spin-coating and physical evaporated MoOx (e-MoOx) by electron beam evaporator. The performance of the s-MoOx/Si HSC has been investigated and optimized, which has been demonstrated solar cell efficiency of 12.5% for s-MoOx/Si HSC that is comparable to efficiency of 13.3% for e-MoOx/Si HSC. …”
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    Thesis-Doctor of Philosophy
  15. 855

    Enhancing tensile and fatigue properties of additively manufactured alloys by post-processing heat treatment by Radhakrishnan, Jayaraj

    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
  16. 856

    Methods of growth and transfer of carbon nanotubes onto substrates for advanced electrical and electronic applications by Ng, Zhi Kai

    Published 2023
    “…However, the main concern of CNT growth on non-planar substrates is the uneven­­ deposition of catalysts due to the direction dependence of the E-beam deposition method. In this context, a dip-coating method for catalyst deposition is developed and optimised to synthesize CNT on GF. …”
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    Thesis-Doctor of Philosophy
  17. 857

    Development of highly efficient organic and perovskite solar cells by Li, Xianqiang

    Published 2018
    “…The top Au electrodes are normally deposited by vacuum deposition methods, such as thermal evaporator and E-beam evaporator. The vacuum deposition methods increase the fabrication costs of organic solar cells and perovskite solar cells and are not compatible with roll-to-roll manufacturing process. …”
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    Thesis
  18. 858

    A combined numerical and experimental approach to investigations of body-freedom flutter on flying wings by Ang, Elijah Hao Wei

    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
  19. 859

    InAlN/GaN high electron mobility transistors on Si for RF applications by Xing, Weichuan

    Published 2018
    “…Sub-100 nm gate was developed using electron beam lithography (EBL) technology to minimize gate induced intrinsic delay. …”
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    Thesis
  20. 860

    2DEG enhancement via epilayer stress engineering in AlN/GaN/AlN heterostructure by Patwal, Shashank

    Published 2021
    “…This was followed by the growth and characterization of AlN/GaN/AlN double heterojunction (DH) HEMT layer structures on semi-insulating 4H-SiC substrates by plasma assisted molecular beam epitaxy (PA-MBE). The higher thermal conductivities of AlN and 4H-SiC are likely to improve heat dissipation, thus providing greater thermal stability and lesser device deterioration due to self-heating. …”
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    Thesis-Doctor of Philosophy