- document
-
Ghoddoosi Dehnavi, P. (author), Wei, D. (author), Aubin-Tam, M.E. (author), Tam, D.S.W. (author)Abstract: In the study of micro-scale biological flows, velocimetry methods based on passive tracers, such as micro-PIV and micro-PTV, are well established to characterize steady flows. However, these methods become inappropriate for measuring unsteady flows of small amplitude, because, on these scales, the motion of passive tracers cannot be...journal article 2020
- document
-
Liu, Yangqing (author), Liu, Yuqing (author), Xin, H. (author), Tian, Hao (author), Wei, Jun (author)To improve the shear behavior and design applicability of rubber ring perfobond connectors (RPBLs), a new rubber ring that aims to make the shear stiffness of RPBLs controllable was proposed. Firstly, the conceptual design and configuration of the new rubber rings were presented and discussed. Subsequently, finite element (FE) models for...journal article 2020
- document
-
Gao, Peng (author), Chen, Yang (author), Huang, Haoliang (author), Qian, Zhiwei (author), Schlangen, E. (author), Wei, Jiangxiong (author), Yu, Qijun (author)Concrete generally deforms and cracks in a non-uniform manner under drying-induced stress. This study used the lattice fracture model to simulate the drying-induced non-uniform deformations, stresses, and micro-crack propagation in concrete. Experiments were designed to validate the lattice fracture model, wherein the drying-induced non...journal article 2020
- document
-
Wei, L. (author), Zietzschmann, F.E. (author), Rietveld, L.C. (author), van Halem, D. (author)In this study, F<sup>−</sup> removal by Ca–Al–CO<sub>3</sub> layered double hydroxides (LDHs) was investigated at environmentally-relevant concentration ranges (2–12 mg/L) to below the WHO guideline, with an emphasis on the effect of LDHs’ modification, as well as the effects of initial F<sup>−</sup> concentration, adsorbent dose, pH,...journal article 2020
- document
-
Su, Libo (author), Wei, Yanling (author), Michiels, Wim (author), Steur, E. (author), Nijmeijer, H. (author)Networks of coupled systems may exhibit a form of incomplete synchronization called partial synchronization or cluster synchronization, which refers to the situation where only some, but not all, systems exhibit synchronous behavior. Moreover, due to perturbations or uncertainties in the network, exact partial synchronization in the sense...journal article 2020
- document
-
Gao, Peng (author), Chen, Yang (author), Huang, Haoliang (author), Qian, Zhiwei (author), Schlangen, E. (author), Wei, Jiangxiong (author), Yu, Qijun (author)To assess the effect of relative humidity (RH) on drying-induced damage in concrete, the non-uniform strains and microcracks in concrete under different RH conditions were obtained using the digital image correlation (DIC) technique and lattice fracture model. The simulated non-uniform displacements were consistent with those captured using...journal article 2020
- document
-
Wei, X. (author), Urbach, Paul (author), Coene, W.M.J.M. (author)We investigate the performance of ptychography with noisy data by analyzing the Cramér-Rao lower bound. The lower bound of ptychography is derived and numerically computed for both top-hat plane wave and structured illumination. The influence of Poisson noise on the ptychography reconstruction is discussed. The computation result shows that,...journal article 2020
- document
-
Wei, C. (author), Hendriks, Koen V. (author), van Riemsdijk, M.B. (author), Jonker, C.M. (author)Agents in teamwork may be highly interdependent on each other, the awareness of interdependence relationships is an important requirement for designing and consequently implementing a multi-agent system. In this work, we propose a formal graphical and domain-independent language that can facilitate the identification of comprehensive...journal article 2019
- document
-
el Mansouri, B. (author), Middelburg, L.M. (author), Poelma, René H. (author), Zhang, Kouchi (author), van Zeijl, H.W. (author), Wei, J. (author), Jiang, H. (author), Vogel, J.G. (author), van Driel, W.D. (author)Commercially available gravimeters and seismometers can be used for measuring Earth’s acceleration at resolution levels in the order of ng∕Hz (where g represents earth’s gravity) but they are typically high-cost and bulky. In this work the design of a bulk micromachined MEMS device exploiting non-linear buckling behaviour is described, aiming...journal article 2019
- document
-
Polaczyk, Nicholas (author), Trombino, Enzo (author), Wei, Peng (author), Mitici, M.A. (author)The purpose of this report is to summarize the current technology and challenges facing the market for electric vertical takeoff and landing (eVTOL) aircraft for urban on-demand air mobility applications. This report has two parts. The first part reviews existing electric drones for on-demand air mobility services for human transportation and...conference paper 2019
- document
-
Wei, Z. (author), Guo, Dengyang (author), Thieme, J. (author), Katan, Claudine (author), Caselli, V.M. (author), Even, Jacky (author), Savenije, T.J. (author)Despite intense research into the optoelectronic properties of metal halide perovskites (MHPs), sub-bandgap absorption in MHPs remains largely unexplored. Here we recorded two-photon absorption spectra of MHPs using the time-resolved microwave conductivity technique. A two-step upward trend is observed in the two-photon absorption spectrum...journal article 2019
- document
-
Li, Zongkun (author), Wang, Te (author), Ge, W. (author), Wei, Dong (author), Li, Hanyu (author)Despite the fact that the Bayesian network has great advantages in logical reasoning and calculation compared with the other traditional risk analysis methods, there are still obvious shortcomings in the study of dynamic risk. The risk factors of the earth-rock dam breach are complex, which vary with time during the operation period. Static...journal article 2019
- document
-
Sun, Y. (author), Kang, Xuanwu (author), Zheng, Yingkui (author), Lu, Jiang (author), Tian, Xiaoli (author), Wei, Ke (author), Wu, Hao (author), Wang, Wenbo (author), Liu, Xinyu (author), Zhang, Kouchi (author)Gallium nitride (GaN)-based vertical power Schottky barrier diode (SBD) has demonstrated outstanding features in high-frequency and high-power applications. This paper reviews recent progress on GaN-based vertical power SBDs, including the following sections. First, the benchmark for GaN vertical SBDs with different substrates (Si, sapphire, and...review 2019
- document
-
Zhang, B. (author), Wei, J. (author), Bottger, A.J. (author), van Zeijl, H.W. (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)We report the design, fabrication and experimental investigation of a MEMS micro-hotplate (MHP) for fast time-resolved X-ray diffraction (TRXRD) study of Cu nanoparticle paste (nanoCu paste) sintering process. The device and its system are designed to have a 60 ms minimum time interval, uniform temperature distribution and variant gas...conference paper 2019
- document
-
Wei, P. (author), Mudde, R.F. (author), Uijttewaal, W.S.J. (author), Spanjers, H. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)This study aimed to characterise the gas-liquid flow and mixing behaviour in a gas-mixed anaerobic digester by improving phase interaction modelling using Computational Fluid Dynamics (CFD). A 2D axisymmetric model validated with experimental data was set up using an Eulerian-Eulerian method. Uncertainty factors, including bubble size, phase...journal article 2019
- document
-
Wei, D. (author), Ghoddoosi Dehnavi, P. (author), Aubin-Tam, M.E. (author), Tam, D.S.W. (author)Stokes equations are commonly used to model the hydrodynamic flow around cilia on the micron scale. The validity of the zero Reynolds number approximation is investigated experimentally with a flow velocimetry approach based on optical tweezers, which allows the measurement of periodic flows with high spatial and temporal resolution. We find...journal article 2019
- document
-
Gao, Yuan (author), Qiao, Tiezhu (author), Zhang, Haitao (author), Yang, Yi (author), Pang, Y. (author), Wei, Hongyan (author)During the operation of the belt conveyor, measuring speed of the belt conveyor is vital to the safe and efficient operation. In the existing measuring speed system, the measurement instrument is required contacting with the surface of the belt. The contact measurement method cannot avoid the occurrence of measuring error caused by slipping...journal article 2019
- document
- Agugiaro, G. (author), Koeva, M. (author), Wei, Z. (author), Biljecki, F. (author) contribution to periodical 2019
- document
-
Bridges, Robert (author), Riska, K.A. (author), Hopkins, Mark (author), Wei, Ying (author)Ice encroachment is the accumulation of ice atop a platform and results when ice drifts against a platform. Most often this occurs in shallow water but in principle can occur in deep water if the ice drift length is long enough. As the ice drifts against the platform it is broken and generates rubble and ice piles in front of the platform, and...journal article 2019
- document
-
Tian, X. (author), Guo, Y. (author), Negenborn, R.R. (author), Wei, Lingna (author), Lin, N.M. (author), Maestre, José María (author)Operational water resources management needs to adopt operational strategies to re-allocate water resources by manipulating hydraulic structures. Model Predictive Control (MPC) has been shown to be a promising technique in this context. However, we still need to advance MPC in the face of hydrological uncertainties. This study makes the first...journal article 2019