ORCID Profile
0000-0002-1603-6134
Current Organisation
University of Western Australia
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Publisher: Springer Science and Business Media LLC
Date: 20-06-2018
DOI: 10.1038/S41467-018-04813-5
Abstract: Lanthanide-doped upconversion nanoparticles (UCNPs) are capable of converting near-infra-red excitation into visible and ultraviolet emission. Their unique optical properties have advanced a broad range of applications, such as fluorescent microscopy, deep-tissue bioimaging, nanomedicine, optogenetics, security labelling and volumetric display. However, the constraint of concentration quenching on upconversion luminescence has h ered the nanoscience community to develop bright UCNPs with a large number of dopants. This review surveys recent advances in developing highly doped UCNPs, highlights the strategies that bypass the concentration quenching effect, and discusses new optical properties as well as emerging applications enabled by these nanoparticles.
Publisher: Springer Science and Business Media LLC
Date: 06-03-2018
Publisher: Hindawi Limited
Date: 2017
DOI: 10.1155/2017/4010376
Abstract: The kinetics of fluid-solid coupling during immersion is an important topic of investigation in rock engineering. Two rock types, sandstone and mudstone, are selected in this work to study the correlation between the softening characteristics of the rocks and moisture content. This is achieved through detailed studies using scanning electron microscopy, shear tests, and evaluation of rock index properties during exposure to different moisture contents. An underground roadway excavation is simulated by dynamic finite element modeling to analyze the effect of moisture content on the stability of the roadway. The results show that moisture content has a significant effect on shear properties reduction of both sandstone and mudstone, which must thus be considered in mining or excavation processes. Specifically, it is found that the number, area, and diameter of micropores, as well as surface porosity, increase with increasing moisture content. Additionally, stress concentration is negatively correlated with moisture content, while the influenced area and vertical displacement are positively correlated with moisture content. These findings may provide useful input for the design of underground roadways.
Publisher: No publisher found
Date: 2019
Publisher: Elsevier BV
Date: 04-2018
Publisher: Elsevier BV
Date: 10-2018
Publisher: Wiley
Date: 09-07-2018
DOI: 10.1002/NAG.2834
Publisher: American Society of Civil Engineers (ASCE)
Date: 03-2018
Publisher: Elsevier BV
Date: 03-2019
No related grants have been discovered for Xiaolin Tang.