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521
Study of a 1 eV GaNAsSb photovoltaic cell grown on a silicon substrate
Published 2014“…We report the performance of a 1 eV GaNAsSb photovoltaic cell grown on a Si substrate with a SiGe graded buffer grown using molecular beam epitaxy. For comparison, the performance of a similar 1 eV GaN0.018As0.897 Sb 0.085 photovoltaic cell grown on a GaAs substrate was also reported. …”
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Journal Article -
522
Modular Morphing Lattices for Large-Scale Underwater Continuum Robotic Structures
Published 2024“…The first is a morphing beam snake-like robot that can generate thrust at specific anguilliform swimming parameters. …”
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Article -
523
Large-area atomic layers of the charge-density-wave conductor TiSe2
Published 2020“…However, the syntheses of monolayer and large-area 2D CDW conductors can currently only be achieved by molecular beam epitaxy under ultrahigh vacuum. This study reports the growth of monolayer crystals and up to 5 × 105 µm2 large films of the typical 2D CDW conductor-TiSe2 -by ambient-pressure chemical vapor deposition. …”
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Journal Article -
524
Broadband strip-line ferromagnetic resonance spectroscopy of soft magnetic CoFeTaZr patterned thin films
Published 2018“…Broadband strip-line ferromagnetic resonance spectroscopy over wide range of frequency (8 – 20 GHz) was used to study the magnetization dynamics as a function of ion-beam dosage. With higher fluences, damping constant showed a continuous increase from 0.0103 to 0.0430. …”
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Journal Article -
525
Effect of embedded nanoparticle surface chemistry on plasmonic organic photovoltaic devices
Published 2018“…Ligand-free metal NPs prepared by physical methods such as pulsed laser ablation and electron beam evaporation can enhance the PCE when introduced into the BHJ. …”
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Journal Article -
526
Additive manufacturing of NiTi shape memory alloys using pre-mixed powders
Published 2019“…This work presents a comparative study on the in-situ alloying of NiTi shape memory alloys (SMAs) by directed energy deposition (DED), selective laser melting (SLM) and selective electron beam melting (SEBM) processes using pre-mixed Ni-Ti powders. …”
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Journal Article -
527
Multi-IRS empowered terahertz wireless communication over generalized fading
Published 2024“…To mitigate these limitations and leverage the unique advantages of the THz band, this study investigates a multi-IRS-empowered THz system that incorporates design parameters such as transceiver antenna gains, operation frequency, link distances, molecular absorption losses, beam misalignment, transceiver hardware imperfections, and statistical characteristics of the THz channel. …”
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Conference Paper -
528
First results on a new PIAA coronagraph testbed at NASA Ames
Published 2017“…For our wavefront control we are focusing on using small Micro-Electro- Mechanical-System deformable mirrors (MEMS DMs), which promises to reduce the size of the beam and overall instrument, a consideration that becomes very important for small telescopes. …”
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Presentation -
529
Multi-bounce Returns for Specular Surface Mapping from Consumer-grade Flash LiDAR
Published 2024“…Consumer-grade LiDAR multi-beam flash LiDAR is challenging with its coarse resolution, co-located sensors, and multiplexing setup. …”
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Thesis -
530
Optimizing resource allocation in large communications satellite constellations
Published 2024“…In particular, novel methods for the Beam Shaping, User Grouping, Satellite Routing, Frequency Assignment, and Gateway Routing problems are proposed, tailored for large non-geostationary orbit constellations with satellites at multiple altitudes, referred to as hybrid systems. …”
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Thesis -
531
Study on the mechanical properties of multi jet fusion 3D printed PA12 lattice structures
Published 2023“…However, MJF and HSS use inkjet-dispensed agents and a heating element while SLS fuses the powder material through the use of a directed laser beam. Products manufactured by MJF feature a good surface finish, good feature resolution, and consistent mechanical properties, making them appealing to consumers. …”
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Final Year Project (FYP) -
532
A study on the use of femtosecond laser to perform surface polishing on a selective laser melting manufactured type 316L stainless steel
Published 2019“…It appeared to be the effect of more material getting ablated in the depth direction surrounding the particulate where the laser beam was directed to the surface for a longer period. …”
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Final Year Project (FYP) -
533
Developing a portable, high-speed, low-cost desktop photoacoustic tomography imaging system
Published 2019“…Usually Nd:YAG-OPO laser is bulky, heavy and needs an optical table to deliver non-fluctuating laser beam and it needs external op- tics (reflectors/prisms) to direct the laser beam onto the sample (there are portable OPO lasers from OpoTek, EKSPLA, and various other companies that do not require optical table but they are more expensive than conventional Nd:YAG-OPO lasers). …”
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Thesis -
534
Investigation of low coherence interferometry techniques for biomedical applications
Published 2014“…A common-path LCI system was incorporated into an optical tweezers system. The light beams of LCI and optical tweezers are collinear, thereby ensuring a good axial accuracy. …”
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Thesis -
535
Three-dimensional imaging of microstructures by an improved compact digital holographic microscope (ICDHM) with dual wavelength
Published 2018“…A point source generated by a long working distance microscope objective is located into the cube beam-splitter to get a higher numerical aperture (NA) of the system. …”
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Conference Paper -
536
Photonic engineering technology for the development of terahertz quantum cascade lasers
Published 2020“…However, the applications of THz QCL require good output characteristics in terms of the emission spectrum, beam quality, power efficiency, and polarization control, which are beyond the reach of the electronic engineering techniques. …”
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Journal Article -
537
Measuring the hole-state anisotropy in MgB2 by electron energy-loss spectroscopy
Published 2011“…In particular, we have studied two different crystal orientations, [110] and [001], with respect to the incident electron beam direction, and found significant changes in the near-edge fine structure of the B K-edge. …”
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Journal Article -
538
Measurement of the background in the CMS muon detector in 𝑝𝑝 -collisions at √𝑠 =13 TeV
Published 2024“…While some backgrounds result from natural radioactivity, cosmic rays, and interactions of the circulating protons with residual gas in the beam pipe, the dominant source of background hits in the muon system arises from proton–proton interactions themselves. …”
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Article -
539
Digital holography to light field
Published 2014“…Due to its non-interferometric nature, TIE relaxes the stringent beam-coherence requirements for interferometry, extending its applications to various optical fields with arbitrary spatial and temporal coherence. …”
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Conference Paper -
540
Optimizing MC-ICP-MS with SEM protocols for determination of U and Th isotope ratios and 230Th ages in carbonates
Published 2019“…Non-linear behavior was not observed in the MasCom SEM with a retarding potential quadrupole in our MC-ICP-MS system when the beam intensity was limited to < ∼1 × 10 6 cps. We performed a series of tests to examine the influence of tuning parameters, peak shift, and operating voltage of the SEM on isotopic measurements. …”
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Journal Article