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Wang, Lei (author), Zhao, Ning (author), Zhu, Changrui (author), Chen, Lei (author), Jiang, Yang (author), Zhou, Rulong (author), Liu, Yanfang (author), Qu, Bingyan (author), Hintzen, H.T.J.M. (author)
In the field of solid-state luminescence, Cu<sup>2+</sup> has long been widely acknowledged for its capacity to emit infrared light. However, the occurrence of visible emission from Cu<sup>2+</sup> ions had been infrequently observed and reported. In this study, we made an intriguing discovery by examining the behavior of Cu<sup>2+</sup>...
journal article 2024
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Wang, Lei (author), Wang, Cailu (author), Chen, Y. (author), Jiang, Yang (author), Chen, Lei (author), Xu, Jinzhang (author), Qu, Bingyan (author), Hintzen, H.T.J.M. (author)
The red afterglow of current rare-earth-activated long persistent luminescence (LPL) phosphors is largely still less than 6 h, in contrast to the 20 or 30 h long blue- or green-emitting ones, becoming the main obstacle to realize their multiscenario applications in practice. Herein, we report a rare-earth-free red-emitting LPL phosphor SrGa...
journal article 2022
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Chen, Y. (author), Qu, L. (author)
The rapid development of Chinese megacities in the last decades have been mainly characterized by top-down planning and large-scale urban development and redevelopment, as well as by using place-making as a tool for city branding. This approach has also been used in other countries and has been constantly criticized for replacing old...
journal article 2020
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Qu, S. (author), Guan, Zhe (author), Verschuur, D.J. (author), Chen, Yangkang (author)
Microseismic methods are crucial for real-Time monitoring of the hydraulic fracturing dynamic status during the development of unconventional reservoirs. However, unlike the active-source seismic events, the microseismic events usually have low signal-To-noise ratio (SNR), which makes its data processing challenging. To overcome the noise...
journal article 2020
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Chen, Z. (author), Qu, Ying xia (author), Zeilstra, Christiaan (author), Van Der Stel, Jan (author), Sietsma, J. (author), Yang, Y. (author)
HIsarna is a promising ironmaking technology to reduce CO <sub>2</sub> emission. Information of phase transformation is essential for reaction analysis of the cyclone reactor of the HIsarna process. In addition, data of density and volume of the ore particles are necessary for estimation of the residence time of the particles in the cyclone...
journal article 2019
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Qu, L. (author), Chen, Y. (author), Rooij, R.M. (author), de Jong, P. (author)
This article will contribute to filling the knowledge gap about learning from group methods in (urban and regional) design education, with action research results based on real teaching activities in TU Delft, Faculty of Architecture and the Built Environment (A&amp;BE), conducted and coordinated by the authors. Constructive alignment of the...
journal article 2019
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Chen, Z. (author), Qu, Yingxia (author), Zeilstra, Christiaan (author), van der Stel, Jan (author), Sietsma, J. (author), Yang, Y. (author)
Melting and reduction of fine iron ore particles in the gas environment of a HIsarna smelting cyclone is a critically important topic, but very limited information is currently available except for some experimental data from high temperature drop tube furnace (HTDF). This work discusses the equilibrium state of reacting iron ore in the HTDF...
journal article 2018
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Liu, L. (author), Qu, B. (author), Chen, Bin (author), Hanjalic, A. (author), Wang, H. (author)
Traces of user activities recorded in online social networks open new possibilities to systematically understand the information diffusion process on social networks. From the online social network WeChat, we collected a large number of information cascade trees, each of which tells the spreading trajectory of a message/information such as which...
journal article 2018
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Qu, S. (author), Verschuur, D.J. (author), Chen, Yangkang (author)
As full waveform inversion (FWI) is a non-unique and typically ill-posed inversion problem, it needs proper regularization to avoid cycle-skipping. To reduce the non-linearity of FWI, Joint Migration Inversion (JMI) is proposed as an alternative, explaining the reflection data with decoupled velocity and reflectivity parameters. However, the...
journal article 2018
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Wang, H. (author), Chen, Chuyi (author), Qu, B. (author), Li, Daqing (author)
The participation of individuals in multi-layer networks allows for feedback between network layers, opening new possibilities to mitigate epidemic spreading. For instance, the spread of a biological disease such as Ebola in a physical contact network may trigger the propagation of the information related to this disease in a communication...
journal article 2017
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Chen, Zhi Guo (author), Chen, R. Y. (author), Zhong, R. D. (author), Schneeloch, John (author), Zhang, C. (author), Huang, Y. (author), Qu, F. (author), Yu, R. (author), Li, Q. (author), Gu, G. D. (author), Wang, N. L. (author)
Three-dimensional topological insulators (3D TIs) represent states of quantum matters in which surface states are protected by timereversal symmetry and an inversion occurs between bulk conduction and valence bands. However, the bulk-band inversion, which is intimately tied to the topologically nontrivial nature of 3D Tis, has rarely been...
journal article 2017
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Gan, S. (author), Wang, S. (author), Chen, Y. (author), Qu, S. (author), Zu, S. (author)
Direct imaging of simultaneous-source (or blended) data, without the need of deblending, requires a precise subsurface velocity model. In this paper, we focus on the velocity analysis of simultaneous-source data using the normal moveout-based velocity picking approach.We demonstrate that it is possible to obtain a precise velocity model directly...
journal article 2016
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