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Giant magnetocaloric effects by tailoring the phase transitions

Brück, E.H. (author), Trung, N.T. (author), Zhang, L. (author), Caron, L. (author), Buschow, K.H.J. (author)

The MnCoGe alloy can crystallize in either the hexagonal Ni2In- or the orthorhombic TiNiSi-type of structure. In both phases MnCoGe behaves like a typical ferromagnet with a second-order magnetic phase transition. For MnCoGeBx with B on interstitial positions, we discover a giant magnetocaloric effect associated with a single first-order...

journal article 2010

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Comparison of Particle-Associated Bacteria from a Drinking Water Treatment Plant and Distribution Reservoirs with Different Water Sources

Liu, G. (author), Ling, F.Q. (author), Van der Mark, E.J. (author), Zhang, X.D. (author), Knezev, A. (author), Verberk, J.Q.J.C. (author), Van der Meer, W.G.J. (author), Medema, G.J. (author), Liu, W.T. (author), Van Dijk, J.C. (author)

This study assessed the characteristics of and changes in the suspended particles and the associated bacteria in an unchlorinated drinking water distribution system and its reservoirs with different water sources. The results show that particle-associated bacteria (PAB) were present at a level of 0.8–4.5?×?103 cells ml?1 with a biological...

journal article 2016

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An analytical solution for tidal propagation in the Yangtze Estuary, China

Zhang, E.F. (author), Savenije, H.H.G. (author), Chen, S.L. (author), Mao, X.H. (author)

An analytical model for tidal dynamics has been applied to the Yangtze Estuary for the first time, to describe the tidal propagation in this large and typically branched estuary with three-order branches and four outlets to the sea. This study shows that the analytical model developed for a single-channel estuary can also accurately describe the...

journal article 2012

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From single- to double-first-order magnetic phase transition in magnetocaloric Mn1−xCrxCoGe compounds

Trung, N.T. (author), Biharie, V. (author), Zhang, L. (author), Caron, L. (author), Buschow, K.H.J. (author), Brück, E.H. (author)

Substitution of some Cr for Mn atoms in MnCoGe was employed to control the magnetic and structural transitions in this alloy to coincide, leading to a single first-order magnetostructural transition from the ferromagnetic to the paramagnetic state with a giant magnetocaloric effect observed near room temperature. Further increase in the Cr...

journal article 2010

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Mitigate SIR epidemic spreading via contact blocking in temporal networks

Zhang, S. (author), Zhao, Xunyi (author), Wang, H. (author)

Progress has been made in how to suppress epidemic spreading on temporal networks via blocking all contacts of targeted nodes or node pairs. In this work, we develop contact blocking strategies that remove a fraction of contacts from a temporal (time evolving) human contact network to mitigate the spread of a Susceptible-Infected-Recovered...

journal article 2022

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Integrated 64 pixel UV image sensor and readout in a silicon carbide CMOS technology

Romijn, J. (author), Vollebregt, S. (author), Middelburg, L.M. (author), el Mansouri, B. (author), van Zeijl, H.W. (author), May, Alexander (author), Erlbacher, Tobias (author), Leijtens, Johan (author), Zhang, Kouchi (author), Sarro, Pasqualina M (author)

This work demonstrates the first on-chip UV optoelectronic integration in 4H-SiC CMOS, which includes an image sensor with 64 active pixels and a total of 1263 transistors on a 100 mm2 chip. The reported image sensor offers serial digital, analog, and 2-bit ADC outputs and operates at 0.39 Hz with a maximum power consumption of 60 μW, which are...

journal article 2022

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Identifying Aging and Alzheimer Disease–Associated Somatic Variations in Excitatory Neurons From the Human Frontal Cortex

Zhang, M. (author), Bouland, G.A. (author), Holstege, H. (author), Reinders, M.J.T. (author)

Background and Objectives - With age, somatic mutations accumulated in human brain cells can lead to various neurologic disorders and brain tumors. Because the incidence rate of Alzheimer disease (AD) increases exponentially with age, investigating the association between AD and the accumulation of somatic mutation can help understand the...

journal article 2023

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What motivates stakeholders to engage in collaborative innovation in the infrastructure megaprojects?

Chen, Xiaoyan (author), He, Qinghua (author), Zhang, Xinyue (author), Cao, Tingting (author), Liu, Y. (author)

Collaborative innovation has become an innovation paradigm to improve innovation performance and firms’ economic output. However, there is relatively little research investigating stakeholders’ drivers for engaging in collaborative innovation and the relative importance of drivers in infrastructure megaprojects. This research aims to address...

journal article 2021

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Photoemission sources and beam blankers for ultrafast electron microscopy

Zhang, L. (author), Hoogenboom, J.P. (author), Cook, B.J. (author), Kruit, P. (author)

Observing atomic motions as they occur is the dream goal of ultrafast electron microscopy (UEM). Great progress has been made so far thanks to the efforts of many scientists in developing the photoemission sources and beam blankers needed to create short pulses of electrons for the UEM experiments. While details on these setups have typically...

journal article 2019

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Predicting nodal influence via local iterative metrics

Zhang, S. (author), Hanjalic, A. (author), Wang, H. (author)

Nodal spreading influence is the capability of a node to activate the rest of the network when it is the seed of spreading. Combining nodal properties (centrality metrics) derived from local and global topological information respectively has been shown to better predict nodal influence than using a single metric. In this work, we investigate...

journal article 2024

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Monitoring of Tidal Variation and Temperature Change-Induced Movements of an Immersed Tunnel Using Distributed Optical Fiber Sensors (DOFSs)

Zhang, X. (author), Broere, W. (author)

The short-term deformation behavior of immersed tunnels due to daily or monthly temperature changes and tidal variations is often not monitored but forms important input for a structural health assessment of the tunnel. In this study, distributed optical fiber sensors (DOFSs) are used to monitor the short-term (daily and monthly) deformation...

journal article 2023

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Microscale Testing and Modelling of Cement Paste as Basis for Multi-Scale Modelling

Zhang, H. (author), Šavija, B. (author), Chaves Figueiredo, S. (author), Lukovic, M. (author), Schlangen, E. (author)

This work aims to provide a method for numerically and experimentally investigating the fracture mechanism of cement paste at the microscale. For this purpose, a new procedure was proposed to prepare micro cement paste cubes (100 × 100 × 100 µm3) and beams with a square cross section of 400 × 400 µm2. By loading the cubes to failure with a...

journal article 2016

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Additively manufactured scaffolds for bone tissue engineering and the prediction of their mechanical behavior: A review

Zhang, X.Y. (author), Fang, G (author), Zhou, J. (author)

Additive manufacturing (AM), nowadays commonly known as 3D printing, is a revolutionary materials processing technology, particularly suitable for the production of low-volume parts with high shape complexities and often with multiple functions. As such, it holds great promise for the fabrication of patient-specific implants. In recent years,...

journal article 2017

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Influence of microencapsulated phase change material (PCM) addition on (micro) mechanical properties of cement paste

Šavija, B. (author), Zhang, H. (author), Schlangen, E. (author)

Excessive cracking can be a serious durability problem for reinforced concrete structures. In recent years, addition of microencapsulated phase change materials (PCMs) to concrete has been proposed as a possible solution to crack formation related to temperature gradients. However, the addition of PCM microcapsules to cementitious materials...

journal article 2017

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Numerical thermal analysis and optimization of multi-chip LED module using response surface methodology and genetic algorithm

Tang, H. (author), Ye, Huai-Yu (author), Chen, Xian-Ping (author), Qian, Cheng (author), Fan, Xue-Jun (author), Zhang, Kouchi (author)

In this paper, the heat transfer performance of the multi-chip (MC) LED module is investigated numerically by using a general analytical solution. The configuration of the module is optimized with genetic algorithm (GA) combined with a response surface methodology. The space between chips, the thickness of the metal core printed circuit board...

journal article 2017

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H-Shaped Multiple Linear Motor Drive Platform Control System Design Based on an Inverse System Method

Qin, Caiyan (author), Zhang, Chaoning (author), Lu, H. (author)

Due to its simple mechanical structure and high motion stability, the H-shaped platform has been increasingly widely used in precision measuring, numerical control machining and semiconductor packaging equipment, etc. The H-shaped platform is normally driven by multiple (three) permanent magnet synchronous linear motors. The main challenges for...

journal article 2017

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Stretchable Binary Fresnel Lens for Focus Tuning

Li, X. (author), Wei, L. (author), Poelma, René H. (author), Vollebregt, S. (author), Wei, J. (author), Urbach, Paul (author), Sarro, Pasqualina M (author), Zhang, Kouchi (author)

This paper presents a tuneable binary amplitude Fresnel lens produced by wafer-level microfabrication. The Fresnel lens is fabricated by encapsulating lithographically defined vertically aligned carbon nanotube (CNT) bundles inside a polydimethyl-siloxane (PDMS) layer. The composite lens material combines the excellent optical absorption...

journal article 2016

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Study on the Degradation of Optical Silicone Exposed to Harsh Environments

Yazdan Mehr, M. (author), van Driel, W.D. (author), De Buyl, Francois (author), Zhang, Kouchi (author)

Degradation mechanisms of silicone plates under harsh environment conditions are studied in this investigation. Environmental degradation of silicone free form, used as secondary optics in Light Emitting Diode LED lighting lamps and luminaires or any other applications requiring high quality optics being used, has negative implications for the...

journal article 2018

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Coupled hygro-mechanical finite element method on determination of the interlaminar shear modulus of glass fiber-reinforced polymer laminates in bridge decks under hygrothermal aging effects

Jiang, X. (author), Luo, Chengwei (author), Qiang, X. (author), Zhang, Qilin (author), Kolstein, M.H. (author), Bijlaard, F.S.K. (author)

To investigate the mechanical degradation of the shear properties of glass fiber-reinforced polymer (GFRP) laminates in bridge decks under hygrothermal aging effects, short-beam shear tests were performed following the ASTM test standard (ASTM D790-10A). Based on the coupled hygro-mechanical finite element (FE) analysis method, an inverse...

journal article 2018

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Effects of light map orientation and shape on the visual perception of canonical materials

Zhang, F. (author), de Ridder, H. (author), Barla, Pascal (author), Pont, S.C. (author)

We previously presented a systematic optics-based canonical approach to test material-lighting interactions in their full natural ecology, combining canonical material and lighting modes. Analyzing the power of the spherical harmonics components of the lighting allowed us to predict the lighting effects on material perception for generic...

journal article 2020