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March 22 2024 (Friday) 4:00-5:30pm
Ms Lillian Cheong will be sharing the latest updates on Hong Kong’s innovation and technology policies and also discuss the key initiatives outlined in the recent financial budget, specifically focusing on the policies related to innovation and technology. The sharing highlighting the strategic directions, funding opportunities, and support measures for startups and tech companies.
Attendees can expect to gain a comprehensive understanding of the current state of the innovation ecosystem in Hong Kong and the government’s efforts to foster a vibrant and competitive environment for technological advancements.
March 14 2024 (Thursday) 4:30-5:30pm
Swimming at microscales encounters stringent physical constraints due to the dominance of viscous forces over inertial forces. Swimming microorganisms have evolved their flexible appendages to overcome these constraints to swim effectively. These natural swimmers also developed versatile navigation strategies to explore their surroundings and search for specific targets. Extensive efforts in the past few decades have sought to elucidate underlying physical principles for cell motility, which has inspired a variety of designs for artificial microrobots. In this talk, I will discuss two problems of microswimmers in biological and artificial systems. I will first discuss the biophysical mechanisms through which swimming microorganisms sense and navigate their surroundings. I will then discuss the application of artificial intelligence in the development of intelligent microrobots that can self-learn how to swim and navigate at the microscale.
March 7 2024 (Thursday) 4:30-5:30pm
The extraction of private, uniformly random bits from weakly random seeds is a problem of central importance in cryptography with multiple applications. A well-known result in classical computer science states that randomness extraction is possible using classical resources only when multiple independent sources are available. On the other hand, Quantum Entanglement enables a solution to the problem even in the so-called device-independent framework. Device-Independent quantum cryptography offers the highest form of security, wherein the users do not need to even trust the devices executing the cryptographic protocol, and can instead verify correctness and security by means of simple statistical tests on the devices. In this talk, we report on the state-of-art theoretical and experimental results on device-independent quantum cryptography, with a focus on quantum randomness amplification and quantum key distribution.
April 5 2024 (Friday) 4:30-5:30pm
Unstructured documents often come with embedded structured data. Representing valuable and structured information as tables is popular in health, financial, and many domains. However, manual extraction of structured information from documents typically costs tremendous time and labor, motivating the need for a system for automating the process. After such tables have been extracted, the data can be used for a wide variety of tasks such as question answering and various “down-stream” analytics tasks. In this talk, we will discuss how to leverage ground breaking pre-trained language models (e.g., BERT, ChatGPT) to develop tools for automated table extraction from various types of documents. We will present different applications from cancer registry reporting, cancer care, and psychiatry hospitalization prediction.
February 2 2024 (Friday) 2:30-3:30pm
Neurological conditions affect one in six people, imposing significant health, economic and societal burden. Bioelectronic medicine aims to restore or replace neurological function with the help of implantable electronic devices. Unfortunately, significant technological limitations prohibit these devices from reaching patients at scale, as implants are bulky, require invasive implantation procedures, elicit a pronounced foreign body response, and show poor treatment specificity and off-target effects. Over the past decade, new devices made using methods from microelectronics industry have been shown to overcome these limitations. Recent literature provides powerful demonstrations of thin film implants that are miniaturised, ultra-conformal, stretchable, multiplexed, integrated with different sensors and actuators, bioresorbable, and minimally invasive. I will discuss the state-of-the-art of these new technologies and the barriers than need to be overcome to reach patients at scale.
Speaker: Academician C.C. Chan, Honorary Professor, The University of Hong Kong, Distinguished Chair Professor, Hong Kong Polytechnic University, Academician, Chinese Academy of Engineering, Fellow, Royal Academy of Engineering About the TechTalk We would like to extend our sincere gratitude and appreciation to Academician C.C. Chan for sharing with us two videos of his speech on …
January 30 2023 (Tuesday) 4:00-5:30pm
We are developing filtration technologies to benefit sustainable environment. The Center for Filtration Research (CFR) at the University of Minnesota, collaborating with 20 leading international filtration manufacturers and end users, was established to find filtration solutions to mitigate PM2.5 and other environmental pollutants. There are more than 15 on-going fundamental and applied research projects on air, gas and liquid filtration. Five projects will be presented: 1. reduction of aerosol concentration in classrooms to prevent virus transmissions; 2. electret and nanofiber media to improve filtration performance; 3. indoor air cleaning using gas purifiers, ionizers, and UV-C; 4. real-time image detection of airborne biological particles; 5. temperature resistant nano-scale membrane for enhanced ceramic wall-flow filter performance. Large scale air cleaning towers are established in Xi’an and Yancheng in China to mitigate urban air PM2.5and CO2 (Yancheng) with two additional towers in Delhi, India. All these research and development activities are helping to improve sustainable environment.
December 13 2023 (Wednesday) 3:30-4:30pm
Although recent research efforts in material development, device designs, and fabrication strategies have resulted in meaningful progresses to the goal of the human-centric optoelectronics, significant challenges still exist toward high-performance soft light emitting devices and curved photodetector arrays. In this talk, material assembly and fabrication strategies for the soft human-centric optoelectronics will be presented. First, recent processes in flexible, foldable, and stretchable quantum-dot light emitting diodes (QLEDs) will be presented. Technologies for high-resolution quantum dot patterning as well as passive matrix array of QLEDs with unconventional form factors will be explained. After that, wide FoV, miniaturized module-size, minimal optical-aberration, high-sensitivity, and deep depth-of-field artificial vision systems inspired from aquatic animal eyes will be presented. Unique stretchable image sensors whose image planes are well matched to the single-lens-based optical system enable such artificial visions. More recent progresses in the bio-inspired artificial visions with amphibious imaging and light-balancing capabilities will be also explained. These deformable QLEDs and bio-inspired artificial visions are expected to provide new opportunities for the advanced mobile electronics and robotics.
December 13 2023 (Wednesday) 4:30-5:30pm
Complex, three dimensional (3D) micro/nanostructures in biology provide sophisticated, essential functions in even the most basic forms of life. Compelling opportunities exist for analogous 3D structures in man-made devices, but existing design options are highly constrained by comparatively primitive capabilities in fabrication and growth. Recent advances in mechanical engineering and materials science provide broad access to diverse, highly engineered classes of 3D architectures, with characteristic dimensions that range from nanometers to centimeters and areas that span square centimeters or more. The approach relies on geometric transformation of preformed two dimensional (2D) precursor micro/nanostructures and/or devices into extended 3D layouts by controlled processes of substrate-induced compressive buckling, where the bonding configurations, thickness distributions and other parameters control the final configurations. This talk reviews the key concepts and focuses on the most recent developments with example applications in areas ranging from mesoscale microfluidic/electronic networks as neural interfaces, to bio-inspired microfliers as environmental sensing platforms.