The Hong Kong University of Science and Technology

Hong Kong Baptist University

City University of Hong Kong

Hongkai Wu

Kangning Ren

Wanbo Li

Zuankai Wang

Shuhuai Yao

Dik-Lung Ma

Beng Soon Ong

Sheng Lin

Ho Nam Chan

Zeyu Li

Yangfan Chen

Chiu Wing Chan

Han Sun

Chong Hu

Three-dimensional (3D) hierarchical morphologies widely exist in natural and biomimetic materials, which impart preferential functions including liquid and mass transport, energy conversion, and signal transmission for various applications. While notable progress has been made in the design and manufacturing of various hierarchical materials, the state-of-the-art approaches suffer from limited materials selection, high costs, as well as low processing throughput. Herein, by harnessing the configurable elastic crack engineering-controlled formation and configuration of cracks in elastic materials, an effect normally avoided in various industrial processes, the present invention provides a facile and powerful technique to enable the faithful transfer of arbitrary hierarchical structures with broad material compatibility and structural and functional integrity. The present invention provides a cost-effective, large-scale production method of a variety of flexible, inexpensive, and transparent 3D hierarchical and biomimetic materials.

Crack engineering as a new route for the construction of arbitrary hierarchical architectures

Microfluidic devices to efficiently remove particulate matter (PM) in air are provided, as are methods of fabricating and using the same. A device can include a channel having a structure configured to generate chaotic advective flow in air within the channel. The channel structure can include a plurality of SHMs disposed within the channel, where each SHM comprises a plurality of grooves each having a width of 200 &#x3bc;m or less and a spacing between each groove of 200 &#x3bc;m or less. The plurality of SHMs can be configured to introduce microvortices in air flow within the channel.

Efficient microfluidic particulate matter (PM) removal device using staggered herringbone micromixers

A method for fabricating flexible microfluidic chips with plastic membranes. In particular, the present invention provides a single-step method for microchannel fabrication of microfluidic chips in a fast and cost-efficient manner.

One-step strategy for ultra-fast and low cost mass production of plastic membrane microfluidic chips

Growing community of inventors

Hong Kong, China

Hongkai Wu