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Liu, Faqi (author), Yang, Hua (author), Yan, R. (author), Wang, Wei (author)
The behaviour of square steel tube confined reinforced concrete columns after fire exposure was studied experimentally and numerically in this paper. Eighteen stub columns were first heated following the ISO 834 standard fire including both heating and cooling phases, and were subsequently loaded to failure after cooling to ambient temperature....
journal article 2019
document
Apostolidis, P. (author), Liu, X. (author), Erkens, Sandra (author), Scarpas, Athanasios (author)
In epoxy-bitumen systems, temperature contributes to the development of physiochemical and mechanical characteristics during curing (chemical hardening) and at the long-term service (oxidative aging) of pavement structures. Hardening (i.e., chemical or oxidative controlled) is a complex phenomenon in epoxy-modified binders and the in-depth...
journal article 2019
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Zhang, H. (author), Liu, Y. (author), Wang, Lingen (author), Sun, Fenglian (author), Fan, Xuejun (author), Zhang, G.Q. (author)
The nanoindentation test was conducted in this paper to investigate the indentation hardness, plasticity and initial creep properties of pressure sintered nanosilver joint at various test temperatures. The effects of strain rate on the indentation hardness were first investigated. Then yield stress of nanosilver sintered joint was studied in...
journal article 2019
document
Liu, P. (author)
Solid State Lighting (SSL) develops towards small size, high lumen output, high working temperature, and multi-functional applications. These trends are more desirable in miniaturized LED applications such as retrofit G4 LED devices. Retrofit G4 LEDs were chosen in this work as a technical carrier due to the miniaturized size challenge and high...
doctoral thesis 2019
document
Liu, Mengyao (author), Lin, Jintai (author), Folkert Boersma, K. (author), Pinardi, Gaia (author), Wang, Yang (author), Chimot, J.J. (author), Wagner, Thomas (author), Xie, Pinhua (author), Eskes, Henk (author), More Authors (author)
pollution and impact evaluation. For regions with high aerosol loadings, the retrieval accuracy is greatly affected by whether aerosol optical effects are treated implicitly (as additional effective clouds)...
journal article 2019
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Zhang, H. (author), Liu, Y. (author), Wang, Lingen (author), Sun, Fenglian (author), Fan, Jiajie (author), Placette, Mark D. (author), Fan, Xuejun (author), Zhang, G.Q. (author)
Modern power electronics has the increased demands in current density and high-temperature reliability. However, these performance factors are limited due to the die attach materials used to affix power dies microchips to electric circuitry. Although several die attach materials and methods exist, nanosilver sintering technology has received...
journal article 2019
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Ma, Jiliang (author), van Ommen, J.R. (author), Liu, Daoyin (author), Mudde, R.F. (author), Chen, Xiaoping (author), Pan, Suyang (author), Liang, Cai (author)
The increase of inter-particle cohesive force greatly changes the fluidization dynamics, finally leading to the partial or complete failure of fluidization. However, few studies concern such transition process. This paper investigates the fluidization dynamics of Geldart B particles with a wide-range of cohesive force by analyzing the in-bed...
journal article 2019
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Zhang, Y. (author), Luo, Liang (author), Ge, Jin (author), Yan, Su Qiong (author), Peng, Yan Xin (author), Liu, Ya Ru (author), Liu, Jin Xiang (author), Liu, C. (author), Ma, Tianqiong (author), More Authors (author)
An "on water" organocatalytic cyanoarylmethylation of aryl acetonitrile to isatins is developed, giving products in high yields and up to excellent diastereoselectivities. A remarkable enhancement of reaction rates and diastereoselectivities by water was observed under mild conditions. Moreover, this approach provides a highly efficient and...
journal article 2019
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Liu, Q. (author), Zhao, M. (author), Mytnyk, S. (author), Klemm, B. (author), Zhang, K. (author), Wang, Y. (author), Yan, Dadong (author), Mendes, E. (author), van Esch, J.H. (author)
Hydrogel microparticles are important in materials engineering, but their applications remain limited owing to the difficulties associated with their manipulation. Herein, we report the self-orientation of crescent-shaped hydrogel microparticles and elucidate its mechanism. Additionally, the microparticles were used, for the first time, as...
journal article 2019
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Ma, Jiliang (author), van Ommen, J.R. (author), Liu, Daoyin (author), Mudde, R.F. (author), Chen, Xiaoping (author), Wagner, E.C. (author), Liang, Cai (author)
Due to the presence of inter-particle cohesive force, cohesive particles reveal totally different fluidization behaviors as compared to the non-cohesive system. This paper studies the fluidization dynamics of Geldart B particles with varying thermal-induced cohesive forces. Multi-source X-ray tomography was applied to reconstruct 3D temporal...
journal article 2019
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Wang, Y. (author), Lovrak, M. (author), Liu, Q. (author), Maity, C. (author), le Sage, V.A.A. (author), Guo, Xuhong (author), Eelkema, R. (author), van Esch, J.H. (author)
Hierarchical compartmentalization through the bottom-up approach is ubiquitous in living cells but remains a formidable task in synthetic systems. Here we report on hierarchically compartmentalized supramolecular gels that are spontaneously formed by multilevel self-sorting. Two types of molecular gelators are formed in situ from...
journal article 2019
document
Liu, Y. (author), Zhang, H. (author), Wang, Lingen (author), Fan, Xuejun (author), Zhang, G.Q. (author), Sun, Fenglian (author)
Purpose: Crack and stress distribution on dies are key issues for the pressure-assisted sintering bonding of power modules. The purpose of this research is to build a relationship among stress distributions, sintering sequences and sintering pressures during the sintering processes. Design/methodology/approach: Three sintering sequences, S(a)...
journal article 2019
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Liu, K. (author), Ma, M. (author), Wu, Longfei (author), Valenti, M. (author), Cardenas-Morcoso, Drialys (author), Hofmann, Jan P. (author), Bisquert, Juan (author), Gimenez, Sixto (author), Smith, W.A. (author)
was investigated. The uniform planar morphology served as a platform to evaluate the electronic effect isolated from morphological effects while minimizing...
journal article 2019
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Zegard, A. (author), Smal, L. (author), Naus, R. (author), Apostolidis, P. (author), Liu, X. (author), van de Ven, Martin (author), Erkens, Sandra (author), Scarpas, Athanasios (author)
The addition of epoxy modifier in bitumen is a relatively new modification technology (1-4) and the most critical epoxy polymerization-induced changes of the epoxy-bituminous materials are not fully understood. Different phenomena take place when epoxy modifiers are incorporated into bitumen and they are dependent on the material hardening...
conference paper 2019
document
Apostolidis, P. (author), Daniel, Gerald C. (author), Liu, X. (author), Erkens, Sandra (author), Scarpas, Athanasios (author)
The utilization of synthetic fibers has been reported in the past (1-8) showing enhancement of fatigue and thermal cracking resistance in asphaltic materials. However, the limited evidences about the benefits of these fibres in asphaltic materials at low material scales have been noticed. Also, the exact reinforcing mechanism of binding system...
conference paper 2019
document
Apostolidis, P. (author), Liu, X. (author), Zhang, M (author), van de Ven, Martin (author), Erkens, Sandra (author), Scarpas, Athanasios (author)
The addition of epoxy modifier in bitumen is a relatively new modification technology (1-4) and the most critical epoxy polymerization-induced changes of the epoxy-bituminous materials are not fully understood. Different phenomena take place when epoxy modifiers are incorporated into bitumen and they are dependent on the material hardening...
conference paper 2019
document
Apostolidis, P. (author), Liu, X. (author), Daniel, Gerald C. (author), Erkens, Sandra (author), Scarpas, Athanasios (author)
The utilisation of synthetic fibres has been reported in the past showing enhancement of fatigue and thermal cracking resistance in asphaltic materials. However, the limited evidences about the benefits of these fibres in asphaltic materials at low material scales have been noticed. Also, the exact reinforcing mechanism of binding system in the...
journal article 2019
document
Chen, Y. (author), Liu, Yao-Hong (author), Zong, Z. (author), Dijkhuis, Johan (author), Dolmans, Guido (author), Staszewski, R.B. (author), Babaie, M. (author)
In this paper, we propose a method to suppress supply pushing of an LC oscillator such that it may directly operate from a switched-mode dc-dc converter generating fairly large ripples. A ripple replication block (RRB) generates an amplified ripple replica at the gate terminal of the tail current source to stabilize the oscillator's tail...
journal article 2019
document
Lyu, Maolong (author), Baldi, S. (author), Liu, Zongcheng (author)
This work removes the critical assumptions of continuity, differentiability, and state-independent boundedness, which are typical of compounded disturbances in disturbance observer-based adaptive designs. Crucial in removing such assumptions are a novel observer-based design with state-dependent gain in place of a constant one, and a novel...
journal article 2019
document
Daniel, C.G. (author), Liu, X. (author), Apostolidis, P. (author), Erkens, Sandra (author), Scarpas, Athanasios (author)
The use of synthetic fibres has been reported to enhance the performance of asphalt pavement materials in terms of permanent deformation, fatigue and thermal cracking. However, limited results about the benefits of synthetic fibres in the reinforced warm-mix asphaltic materials, and the exact mechanism of reinforcing the binding part in pavement...
conference paper 2019
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