Measurement of the intersystem crossing rate in aluminum tris(8-hydroxyquinoline) and its modulation by an applied magnetic field

Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. This article appeared in Journal of Applied Physics 106, 043511 (2009) and may be found at

Constructing PCA baseline algorithms to reevaluate ICA-based face-recognition performance

2006-2007 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Grosmomoside I, a new cucurbitane triterpenoid glycoside from fruits of Momordica grosvenori

2005-2006 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Non-locality preserving projection and its application to palmprint recognition

Author name used in this publication: David ZhangVersion of RecordPublishe

Dependence of the optical conductivity on the uniaxial and biaxial strains in black phosphorene

© 2018 American Physical Society. By using the Kubo formula, the optical conductivity of strained black phosphorene was studied. The anisotropic band dispersion gives rise to an orientation dependent optical conductivity. The energy gap can be tuned by the uniaxial and biaxial strains which can be observed from the interband optical conductivity polarized along the armchair (x) direction. The preferential conducting direction is along the x direction. The dependence of the intraband optical conductivity along the zigzag (y) direction on the Fermi energy and strain exhibits increasing or decreasing monotonously. However, along the x direction this dependence is complicated which originates from the carriers' inverse-direction movements obtained by two types of the nearest phosphorus atom interactions. The modification of the biaxial strain on the energy structure and optical-absorption property is more effective. The imaginary part of the total optical conductivity (Imσ) can be negative around the threshold of the interband optical transition by modifying the chemical potential. Away from this frequency region, Imσ exhibits positive value. It can be used in the application of the surface plasmon propagations in multilayer dielectric structures

Median LDA : a robust feature extraction method for face recognition

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Is ICA significantly better than PCA for face recognition?

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Two-dimensional PCA : a new approach to appearance-based face representation and recognition

2003-2004 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Globally maximizing, locally minimizing : unsupervised discriminant projection with applications to face and palm biometrics

2006-2007 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Unsupervised discriminant projection analysis for feature extraction

Author name used in this publication: David ZhangBiometrics Centre, Department of ComputingRefereed conference paper2006-2007 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe