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IMMC

Hui Wang
Post-doctoral researcher
Dr. at UCL in 2018
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Main project: Interface Controlled Super Tough metal/metallic glass Hybrid Nanolaminate Coatings
Funding: FNRS
Supervisor(s): Thomas Pardoen, Hosni Idrissi

In our research, we characterize the mechanical properties and nanoscale plasticity mechanisms in a tri-layer model system of Al/Al2O3/Al film deposited on Si substrate at room temperature through DC magnetron sputtering. The mechanical response of the films was investigated using nanoindentation as well as a UCLouvain lab-on-chip tensile method based on the relaxation of internal stresses in an actuator beam to pull on the specimen after chemical etching of the underlying sacrificial layers. The results of nanoindentation confirmed the occurrence of creep. Furthermore, by reducing the thicknesses of the alumina layer, a small decrease of the Young’s modulus and hardness was observed. The tri-layer structure becomes more sensitive to different strain rate, which was manifested by nanoindentation test. Also the in-situ TEM nanotensile tests showed an unexpected high ductility can be attained and the high ductility of the tyilayer Al/Al2O3 /Al system is maimly related to the deformation induced crystallization in Al2O3 layer and grain boundary sliding in Al layer.

IMMC main research direction(s):
Processing and characterisation of materials
Solid mechanics

Keywords:
electron microscopy
fracture mechanics
hybrid materials
mesh generation
metallic alloys
micromechanics
microstructure-processing relationships
plasticity
thin films

Research group(s): IMAP

    

Recent publications

See complete list of publications

Journal Articles


1. Wang, Hui; Jiang, Heng; Corbet, Cyril; de Mey, Sven; Law, Kalun; Gevaert, Thierry; Feron, Olivier; De Ridder, Mark. Piperlongumine increases sensitivity of colorectal cancer cells to radiation: involvement of ROS production via dual inhibition of glutathione and thioredoxin systems. In: Cancer Letters, (2019). doi:10.1016/j.canlet.2019.02.034. http://hdl.handle.net/2078.1/214232

2. de Mey, Sven; Jiang, Heng; Wang, Hui; Engels, Benedikt; Gevaert, Thierry; Dufait, Inès; Feron, Olivier; Aerts, Joeri; Verovski, Valeri; De Ridder, Mark. Potential of memory T cells in bridging preoperative chemoradiation and immunotherapy in rectal cancer.. In: Radiotherapy & Oncology, (2018). doi:10.1016/j.radonc.2018.04.003 (Accepté/Sous presse). http://hdl.handle.net/2078.1/199322