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1
Superlight inverse Doppler effect
Published 2019“…It has long been thought that the inverse Doppler frequency shift of light is impossible in homogeneous systems with a positive refractive index. …”
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Journal Article -
2
Parametric inversion of spin currents in semiconductor microcavities
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Journal Article -
3
Rupture kinematics of the 2005 Mw 8.6 Nias-Simeulue earthquake from the joint inversion of seismic and geodetic data
Published 2012“…Based on the excitation of the normal mode data and geodetic data we put relatively tight constraints on the seismic moment and the fault dip, where the dip is determined to be 8° to 10° with corresponding moments of 1.24 × 10^22 to 1.00 × 10^22 N m, respectively. …”
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Journal Article -
4
Nonreciprocal phenomena in superconductivity
Published 2024“…These include current rectification in normal metal-nonreciprocal superconductor junctions and the Josephson diode effect, for which we propose a simple and universally applicable mechanism. …”
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Thesis -
5
An analysis of contact stiffness and frictional receding contacts
Published 2017“…An equivalent surface roughness parameter is defined for two surfaces in contact; and the normal contact stiffness for ground surfaces is observed to be inversely proportional to this parameter. …”
Thesis -
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Quantum spin Hall effect and topological phase transition in InNxBiySb1−x−y/InSb quantum wells
Published 2017“…Phase diagram for bandgap shows that as we increase the QW thickness, at a critical thickness, the electronic bandstructure switches from a normal to an inverted type. We confirm that such transition are topological phase transitions between a traditional insulator and a TI exhibiting QSH effect—by demonstrating the topologically protected edge-states using the bandstructure, edge-localized distribution of the wavefunctions and edge-state spin-momentum locking phenomenon, presence of non-zero conductance in spite of the Fermi energy lying in the bandgap window, crossover points of Landau levels in the zero-mode indicating topological band inversion in the absence of any magnetic field and presence of large Rashba spin-splitting, which is essential for spin-manipulation in TIs.…”
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Journal Article -
8
Smile challenger
Published 2017“…A smile is a form of facial expression that are normally closely associated with happiness. Given that a smile can be measured, can we measure happiness and turn it into a fun Smile Challenger game? …”
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Final Year Project (FYP) -
9
Testosterone, sex hormone-binding globulin, insulin-like growth factor-1 and endometrial cancer risk: observational and Mendelian randomization analyses
Published 2021“…An inverse association was found for SHBG (HR per unit inverse normal scale = 0.76, 95% CI = 0.67–0.86). …”
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10
Spinel manganese ferrites for oxygen electrocatalysis : effect of Mn valency and occupation site
Published 2020“…Convinced by the leading role of octahedral-geometric, we further reveal the role of Mn oxidation state through normalizing the activity to active Mn[Oh] site number. …”
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Journal Article -
11
Physics-informed neural network for fast prediction of temperature distributions in cancerous breasts as a potential efficient portable AI-based diagnostic tool
Published 2024“…The proposed PINN method combines deep learning and physical principles to predict the temperature distributions in breast tissues and identify potential abnormal regions indicating the presence of tumors. The PINN model is normally trained by physics in terms of the residuals of the heat transfer equation, as well as boundary conditions with and without datasets of surface thermal imaging data concerning cancerous breast tissues, which can be used for future inverse thermal modeling to calculate tumor sizes and locations. …”
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Journal Article -
12
The bending-stretching effect of a nonlinear elastic beam under finite deformation
Published 2021“…The displacements are dependent on the square of the inverse of elastic constant, whereas the stresses on the inverse of elastic constant. …”
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Journal Article -
13
Phase measurements based indoor visible light positioning systems
Published 2020“…In this thesis, our first concern on the classical PDOA systems is the use of local oscillators (LOs). The LOs normally use hardware devices and the modulation frequencies are constrained by the multiples (harmonics) of a fundamental LO’s frequency. …”
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Thesis-Doctor of Philosophy -
14
GPU-Oriented Algorithms for Continuous Energy Monte Carlo Neutron Transport
Published 2024“…Through three asymptotic arguments covering different resonant behavior regimes, we show that the normal inverse Gaussian distribution is the natural choice for modeling the total neutron cross-section distribution. …”
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Thesis -
15
Soundfield control using loudspeaker array
Published 2018“…Unlike existing LS methods, the proposed approach estimates the system matrix inverse iteratively and identifies the best estimate of the matrix inverse. …”
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Thesis -
16
Half-body portrait relighting with overcomplete lighting representation
Published 2023“…Rather than following classical inverse rendering methodology that involves estimating normals, albedo and environment maps, we implicitly encode the subject and lighting in a latent space, and use these latent codes to generate relighted images by neural rendering. …”
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Journal Article -
17
Spin-UP: spin light for natural light uncalibrated photometric stereo
Published 2024“…The proposed method uses a novel setup that captures the object's images on a rotatable platform, which mitigates NaUPS's ill-posedness by reducing unknowns and provides reliable priors to alleviate NaUPS's ambiguities. Leveraging neural inverse rendering and the proposed training strategies, Spin-UP recovers surface normals, environment light, and isotropic reflectance under complex natural light with low computational cost. …”
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Conference Paper