City University of Hong Kong

The Hong Kong Polytechnic University

The Hong Kong Research Institute of Textiles and Apparel Limited

Australian Wool Inovation Limited

Walid Daoud

Kaihong Qi

John Haozhong Xin

Xiaowen Wang

Ka Leung Kevin Cheuk

Hao Zhong John Xin

Yunzi Hu

Carol Sze Ki Lin

Yee Yee Kong

Yan Xu

Sze Kar Leung

Wing Sze Tung

Michael K H Leung

Lingyun Wang

Jasim Mohamed Jasim Mohamed Almardi

A WEC which includes a housing, a stator which is fixed to the housing, a rotor movable to the stator, and an oscillating mass connected to the rotor. The oscillating mass is adapted to oscillate as a result of tilting and horizontal movements of the housing. The oscillating mass is further adapted to rotate along with the rotor. A friction generated between the rotor and the stator upon relative movement between the stator and the rotor induces electricity. The WEC is demonstrated to be able to absorb water-wave energy from all directions and convert the kinetic energy into electrical energy through the R-TENG system under low to high frequency simulated water wave motion.

Omnidirectional omni-frequency wave energy converter

A triboelectric generator includes a first triboelectric material providing a first surface, a first electrode attached to the first triboelectric material, a second triboelectric material providing a second surface for contacting the first surface, and a second electrode attached to the second triboelectric material. The second triboelectric material is different from the first triboelectric material. The first electrode and the second electrode are arranged to be electrically connected via an electrical connection. The first triboelectric material comprises a polymer material and an organic semiconductor material arranged in the polymer material.

Triboelectric generator, biomechanical energy harvester, and method of making triboelectric material

A method for making an aerogel includes the steps of a) soaking a wet gel having a liquid phase in at least one solvent to substantially replace the liquid phase in the wet gel with the solvent to form a soaked gel; b) freezing the soaked gel to form a frozen gel; and c) drying the frozen gel in a vacuum chamber to form an aerogel.

Method for making aerogel

The present invention relates to a method for the catalytic synthesis of lactide from lactic acid. The method relates to the synthesis of lactide from lactic acid under the catalysis of a zinc oxide nanoparticle aqueous dispersion as a catalyst. The present invention has four technical characteristics: I. the zinc oxide nanoparticle aqueous dispersion catalyst has a sufficient surface area, and the size of nanoparticles is merely 30-40 nm, providing a sufficient contact area between the substrate (lactic acid) and the catalyst; II. the new catalyst has a milder catalytic effect on polymerization, allowing the molecular weight distribution of a prepolymer within a range of 400-1500 g/mol, which is advantageous for depolymerization to proceed; III. the new catalyst is stable, thus avoiding oxidation or carbonization in a high temperature reaction; and IV. the new catalyst has a low toxicity and a small threat to human health.

Method for synthesizing lactide by means of catalysis of lactid acid

The present invention relates to methods of making articles, and systems for providing wool article have self-cleaning properties. The self-cleaning properties are brought about coating the wool articles with a photocatalyst formulation. The formulation contains titanium compounds, stabilizers, catalysts, and water.

Formulation coated self-cleaning wool

This invention relates to methods of making single phase nanocrystalline titanium dioxide. It is hereby provided a method for preparing single-phase anatase type titanium dioxide photocatalyst having a particle size of nano level at near room temperatures without the need for a sintering process at high temperatures.

Method for making single-phase anatase titanium oxide

Growing community of inventors

Hong Kong, China

Walid Daoud