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The Hong Kong Polytechnic University

3 ARTICLES PUBLISHED IN JoVE

Chemistry

TiO₂-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

Yinting Wong¹, Dan Zhong², Aotian Song⁴, Yan Hu³

¹Department of Biomedical Science, City University of Hong Kong, ²Technological and Higher Education Institute of Hong Kong, ³Hong Kong Polytechnic University, ⁴Pavotech Co. Ltd.

This manuscript proposes a soft-chemistry method to synthesize superhydrophobic, TiO₂-coated hollow glass microspheres (HGM) with high IR-reflective properties.

Engineering

An Available Technique for Preparation of New Cast MnCuNiFeZnAl Alloy with Superior Damping Capacity and High Service Temperature

Dong Li^1,3, Wenbo Liu^1,2, Ning Li¹, Zhenyu Zhong¹, Jiazhen Yan¹, Sanqiang Shi²

¹School of Manufacturing Science and Engineering, Sichuan University, ²Department of Mechanical Engineering, Hong Kong Polytechnic University, ³Department of Mechanical and Electrical Engineering, Chengdu Aeronautic Polytechnic

Here we present a protocol to obtain a novel Mn-Cu-based alloy with excellent comprehensive performances by a high-quality smelting technology and reasonable heat treatment methods.

JoVE Core

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Lu Shen¹, Zong-nan Chen¹, Chihyung Wen¹

¹Department of Mechanical Engineering, Hong Kong Polytechnic University

Here, we present a protocol to observe unsteady vortical flows over a delta wing using a modified smoke flow visualization technique and investigate the mechanism responsible for the oscillations of the leading-edge vortex breakdown locations.