University of Hong Kong

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2022

Smart Microrobots Learn How to Swim and Navigate With AI

Researchers have been able to successfully teach microrobots how to swim via deep reinforcement learning, marking a substantial leap in the progression of microswimming capability. There has been tremendous interest in developing artificial microswimmers that can navigate the world similarly to naturally-occuring swimming microorganisms, like bacteria. Such microswimmers provide promise for a vast array of future biomedical applications, such as targeted drug delivery and microsurgery. Yet, most artificial microswimmers to date can only perform relatively simple maneuvers with fixed locomotory gaits.

Cheaper Solar Cells Could be on the Way

New solar cell devices that are cheaper and easier to make could soon make their way to market thanks to materials. Traditional solar cells are made from silicon, which has good efficiency and stability, but is relatively expensive to make and can only be manufactured in stiff panels. Perovskite solar cells offer an intriguing alternative; they can be printed from inks, making them low cost, high efficiency, thin, lightweight and flexible.

New Efficiency Record for Solar Cells

Researchers have set a new record in the power conversion efficiency of solar cells made using perovskite and organic materials. This technological breakthrough paves the way for flexible, light-weight, low cost and ultra-thin photovoltaic cells which are ideal for powering vehicles, boats, blinds and other applications.

2021

Innovative Design of Titanium Alloy with Supreme Properties

A research team has successfully developed a super-strong, highly ductile and super-light titanium-based alloy using additive manufacturing, commonly known as 3D printing. Their findings open up a new pathway to design alloys with unprecedented structures and properties for various structural applications.

Training an AI Eye on the Moon

A Moon-scanning method that can automatically classify important lunar features from telescope images could significantly improve the efficiency of selecting sites for exploration.

3D Print Technology to Advance Dental and Facial Reconstruction

3D printing technology will be used to rebuild human teeth, bones and tissues at The University of Queensland's new Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3).

Efficient Ocean Wave Energy Harvesting for "Blue Energy"

A research team has recently developed a water-tube-based triboelectric nanogenerator that can efficiently convert various irregular and low-frequency mechanical energies, including ocean wave energy, into electricity, providing a new avenue for the development of "blue energy".

A New Generation of Tiny, Agile Drones

The technology could boost aerial robots' repertoire, allowing them to operate in cramped spaces and withstand collisions.

2020

Magnetic Spray Turns Creates Millirobots for Biomedical Applications

An easy way to make millirobots by coating objects with a glue-like magnetic spray was developed in a joint research. Driven by the magnetic field, the coated objects can crawl, walk, or roll on different surfaces. As the magnetic coating is biocompatible and can be disintegrated into powders when needed, this technology demonstrates the potential for biomedical applications, including catheter navigation and drug delivery.

Anti-Bacterial Graphene Face Masks

Face masks have become an important tool in fighting against the COVID-19 pandemic. However, improper use or disposal of masks may lead to "secondary transmission". A research team has successfully produced graphene masks with an anti-bacterial efficiency of 80%, which can be enhanced to almost 100% with exposure to sunlight for around 10 minutes.

Novel 3D Printed Reef Tiles to Repopulate Coral

Architects and marine scientists have jointly developed a novel method for coral restoration making use of specially designed 3D printed artificial 'reef tiles' for attachment by corals to enhance their chance of survival .

Photo-Rechargable Zinc-Ion Devices Merge Solar Cell and Battery Tech

Scientists have made a battery that can be directly charged in sunlight without needing an external solar panel. Clever design of the battery electrodes facilitates photo-rechargeable zinc-ion batteries that could find applications as cheap devices for off-grid solar farms.

Merging Solar Cell, Liquid Battery Produces Long-Lasting Solar Storage

Chemists have created a highly efficient and long-lasting solar flow battery, a way to generate, store and redeliver renewable electricity from the sun in one device.

2019

3D printing technique accelerates nanoscale fabrication a thousandfold

Using a new time-based method to control light from an ultrafast laser, researchers have developed a nanoscale 3D printing technique that can fabricate tiny structures a thousand times faster than conventional two-photon lithography techniques, without sacrificing resolution.

Harvesting energy from the human knee

Imagine powering your devices by walking. With technology recently developed, that possibility might not be far out of reach.

Toy transformers and real-life whales inspire biohybrid robot

Drawing inspiration from biology and the toy shelf, researchers have developed a swimming robot with a light-controlled cellular engine that can perform highly-targeted drug delivery.

Improving stability and optical properties of perovskite films

Metal halide perovskites are regarded as next generation materials for light emitting devices. A recent joint-research has developed a new and efficient fabrication approach to produce all-inorganic perovskite films with better optical properties and stability, enabling the development of high colour-purity and low-cost perovskite LEDs with a high operational lifetime.

Sensor technology to diagnose reproductive health in real time

Researchers have developed new robotic sensor technology that has the capability to diagnose women's reproductive health problems in real-time.

Robotic surgery through a single entry site

The Faculty of Medicine at The Chinese University of Hong Kong (CUHK) conducted the world's first multi-specialty clinical trial using the "Single Port Minimally Invasive Robotic Surgical System". More than 60 patients underwent single port robotic-assisted minimally invasive surgery as part of this trial and demonstrated that multiple procedures could be performed through a single entry site.

2018

Robotic millipede for drug delivery

A novel tiny, soft robot with caterpillar-like legs capable of carrying heavy loads and adaptable to adverse environments could pave way for medical technology advancement such as drugs delivery in human body.