ORCID Profile
0000-0003-1853-5583
Current Organisations
Northeastern University
,
Swinburne University of Technology
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Publisher: Informa UK Limited
Date: 08-02-2017
Publisher: Elsevier BV
Date: 2020
Publisher: AIP
Date: 2013
DOI: 10.1063/1.4806826
Publisher: Elsevier BV
Date: 04-2023
Publisher: Elsevier BV
Date: 05-2022
Publisher: MDPI AG
Date: 13-10-2017
DOI: 10.3390/CRYST7100258
Publisher: Elsevier BV
Date: 12-2014
Publisher: Elsevier BV
Date: 09-2016
Publisher: AIP Publishing
Date: 12-2022
DOI: 10.1063/5.0106118
Abstract: Metal halide perovskite materials have been extensively explored in modern photonic devices. Photonic crystals (PCs) are periodic structures with specific optical properties, such as photonic stop bands and “slow photon” effects, which can tailor the propagation and distribution of photons in photoelectric devices. PCs have in recent years been widely explored to significantly improve the performance of perovskite luminescent materials and/or photoelectric devices. Therefore, a full understanding of the key role of PCs and a further learning of the correct use of PCs in perovskite photonic hotoelectric devices are essential for realizing the inherent potential of the superior performance of such devices. By means of this first review, we aim at offering a comprehensive framework description for PCs suitable for high-performance perovskite photoelectric devices. We start with a brief introduction to the basic aspects of PCs. Then, we summarize the influences of PCs on emission/absorption for perovskite luminescent materials. Subsequently, we systematically discuss concepts like light extraction, light trapping, slow-light effects, and structural effects of PCs for perovskite devices, with a particular emphasis on their theoretical descriptions. We argue that the marriage of perovskite materials with PCs can open up a novel frontier in photoelectric devices that potentially can spawn many exciting new fields.
Publisher: American Association for the Advancement of Science (AAAS)
Date: 09-2023
Publisher: Elsevier BV
Date: 07-2021
Publisher: Springer Science and Business Media LLC
Date: 17-08-2015
DOI: 10.1557/JMR.2015.223
Publisher: Elsevier BV
Date: 11-2020
Publisher: Springer Science and Business Media LLC
Date: 04-2018
Publisher: IOP Publishing
Date: 31-08-2016
DOI: 10.1088/0957-4484/27/40/405703
Abstract: Three types of photonic crystal (PC) thin films have been prepared for the investigation of their deformation behaviors by nanoindentation tests at the microscale and nanoscale. Each type of PC thin film was composed of poly(methyl methacrylate) (PMMA) nanoparticles with a uniform size. Another type of thin film was prepared by assembling nanoparticles with three different sizes. It was exciting to observe that the hardness and Young's modulus were significantly improved (more than 15 times) in well-ordered PC thin films than disordered ones. Furthermore, size-dependent mechanical properties were observed for the three types of PCs. Such a size effect phenomenon can be attributed to the special polycrystalline material having a periodical face-centered cubic structure of PC thin films. Furthermore, the indentation size effect that shows that the indentation hardness decreases with an increasing indentation depth has also been observed for all four types of thin films. It is conjectured that the application of the PC structure to other functional materials may enhance their mechanical properties.
Publisher: Springer Science and Business Media LLC
Date: 14-03-2019
Publisher: Elsevier BV
Date: 02-2015
Publisher: Elsevier BV
Date: 2014
Publisher: Elsevier BV
Date: 04-2021
Publisher: IOP Publishing
Date: 31-08-2016
DOI: 10.1088/0957-4484/27/40/405202
Abstract: Concentration quenching effects of identical rare earth (RE) activator ions and energy transfer (ET) between different RE ions often compromise the photoluminescence (PL) quantum efficiency in RE based luminescence materials. Here, we demonstrate that in NaGd(WO4)2:Tb(3+), Eu(3+) inverse opal photonic crystals (IOPCs), the suppression of the emission line located in the photonic stop band (PSB) and a dramatic increase of the lifetimes of Eu(3+) and Tb(3+) ions are observed. More interestingly, the concentration quenching among Eu(3+) ions and ET from Tb(3+) to Eu(3+) is significantly relieved owing to the periodic empty cavity structure of IOPCs. As a consequence, the luminescent quantum efficiency (QE) of the NaGd(WO4)2:Tb(3+), Eu(3+) IOPCs increases ∼2 times more than that of crushed NaGd(WO4)2:Tb(3+), Eu(3+) powder. In addition, a reusable pH sensor with good linear response (pH 5-10) has been designed based on the high surface-to-volume ratio, high connectivity, and enhanced luminescence of NaGd(WO4)2:Tb(3+), Eu(3+)IOPCs, which could be applied to the dynamical detection of pH value.
Publisher: Springer Science and Business Media LLC
Date: 22-03-2016
Publisher: Elsevier BV
Date: 07-2023
Publisher: American Scientific Publishers
Date: 09-2015
Publisher: Wiley
Date: 22-07-2013
Publisher: Springer Science and Business Media LLC
Date: 14-10-2015
DOI: 10.1038/SREP15072
Abstract: A crystal plasticity finite element method (CPFEM) model has been developed to investigate the mechanical properties and micro-texture evolution of single-crystal aluminum induced by a sharp Berkovich indenter. The load-displacement curves, pile-up patterns and lattice rotation angles from simulation are consistent with the experimental results. The pile-up phenomenon and lattice rotation have been discussed based on the theory of crystal plasticity. In addition, a polycrystal tensile CPFEM model has been established to explore the relationship between indentation hardness and yield stress. The elastic constraint factor C is slightly larger than conventional value 3 due to the strain hardening.
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 12-2022
Publisher: Springer Science and Business Media LLC
Date: 26-07-2017
DOI: 10.1038/S41598-017-06007-3
Abstract: Uncovering energy absorption and surface effects of various penetrating velocities on laminar structures is essential for designing protective structures. In this study, both quasi-static and dynamic penetration tests were systematical conducted on the front surfaces of metal sheets coated with a graphene oxide (GO) solution and other media. The addition of a GO fluid film to the front impact surface aided in increasing the penetration strength, improving the failure extension and dissipating additional energy under a wide-range of indentation velocity, from 3.33 × 10 −5 m/s to 4.42 m/s. The coated -surfaces improved the specific energy dissipation by approximately 15~40% relative to the dry-contact configuration for both single-layer and double-layer configurations, and specific energy dissipations of double-layer configurations were 20~30% higher than those of the single-layer configurations. This treatment provides a facile strategy in changing the contact state for improving the failure load and dissipate additional energy.
Publisher: IOP Publishing
Date: 24-06-2015
Publisher: Elsevier BV
Date: 2014
Publisher: Springer Science and Business Media LLC
Date: 21-09-2015
DOI: 10.1557/JMR.2015.278
Publisher: Springer Science and Business Media LLC
Date: 06-08-2013
DOI: 10.1038/SREP02373
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 2019
Publisher: Elsevier BV
Date: 10-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TC03473F
Abstract: Rare-earth (RE) based fluoride and oxyfluoride upconversion nanocrystals (UCNCs) have the ability to generate multicolor visible emission as well as a wide range of applications under near-infrared excitation.
Publisher: Elsevier BV
Date: 12-2015
Publisher: Informa UK Limited
Date: 12-01-2016
Publisher: Springer Science and Business Media LLC
Date: 08-04-2015
DOI: 10.1038/SREP09568
Abstract: It is well known that when coarse-grained metals undergo severe plastic deformation to be transformed into nano-grained metals, their ductility is reduced. However, there are no ductile fracture criteria developed based on grain refinement. In this paper, we propose a new relationship between ductile fracture and grain refinement during deformation, considering factors besides void nucleation and growth. Ultrafine-grained Al-Mg alloy sheets were fabricated using different rolling techniques at room and cryogenic temperatures. It is proposed for the first time that features of the microstructure near the fracture surface can be used to explain the ductile fracture post necking directly. We found that as grains are refined to a nano size which approaches the theoretical minimum achievable value, the material becomes brittle at the shear band zone. This may explain the tendency for ductile fracture in metals under plastic deformation.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TC90213D
Abstract: Correction for ‘Controlled size and morphology, and phase transition of YF 3 :Yb 3+ ,Er 3+ and YOF:Yb 3+ ,Er 3+ nanocrystals for fine color tuning’ by Yongsheng Zhu et al. , J. Mater. Chem. C , 2016, DOI: 10.1039/c5tc03473f.
No related grants have been discovered for Mao Liu.