Seminar

Zoom Link: https://hku.zoom.us/j/95690107722?pwd=KARbsSPDxqYtCaSbRQ0AbxNFmlyBl2.1 Abstract Three-photon fluorescence (3PF) microscopy enables high-contrast deep-tissue imaging with cellular resolution, especially in 1.7 μm wavelength range, yet its widespread adoption has been hindered by the lack of compact, tunable, and high-power femtosecond laser sources. Here, we demonstrate a broadband tunable ultrafast Mamyshev oscillator operating in the 1.7 μm wavelength region, […]

Zoom Link: https://hku.zoom.us/j/93628966280 Abstract Recent advances in artificial intelligence have brought new momentum to healthcare driven by neural signal decoding. This seminar presents three lines of our research on AI-based neural signal analysis across diverse application domains, including wearable EEG-based epileptic seizure detection, emotion recognition in SSVEP-based brain–computer interfaces (BCIs), and multimodal neuroimaging-based tinnitus diagnosis. […]

Zoom Link: https://us05web.zoom.us/j/83514440427?pwd=4Lao2gGnkpLnw510JJXc0mXIaXCmJ5.1 Abstract Existing motion planning methods often struggle with rapid-motion obstacles due to an insufficient understanding of environmental changes. To address this limitation, we propose integrating motion planners with Doppler LiDARs which provide not only ranging measurements but also instantaneous point velocities. However, this integration is nontrivial due to the dual requirements of […]

Abstract Low Earth orbit (LEO) satellite constellations offer global communication capabilities, yet fundamental system challenges restrict their full utility. Specifically, under increasing user demands, these networks face difficulties in optimizing internal traffic distribution and efficiently delivering advanced content services. Furthermore, seamlessly integrating space-based infrastructure with terrestrial systems to ensure resilient operations remains an unresolved issue. […]

Zoom Link: https://us05web.zoom.us/j/89432980495?pwd=LSDClCuSVwd9fL5oZaI532byF2aC1a.1 Abstract Miniature fluorescence microscope, or miniscope, is a compact fluorescence imaging system that integrates the excitation source, optical filters, imaging optics, and image sensor into a small platform.  Among various technical approaches, one-photon widefield miniscopes are especially attractive because of their relatively simple architecture, strong engineering feasibility, and compatibility with two-dimensional superficial […]

Zoom Link: https://hku.zoom.us/j/99219579381?pwd=IjEXStaAdwdBhtSyoZ0aYbLavr0zhX.1 Abstract Deep learning (DL)-based methods have achieved remarkable success in continuous wireless resource allocation, yet its application to problems involving discrete variables remains hindered by the zero-gradient issue, complex constraint enforcement, and the lack of non-same-parameter-same-decision (non-SPSD) guarantees. To address these challenges, this seminar presents a novel DL framework that leverages probabilistic […]

Zoom Link: https://hku.zoom.us/j/91528535994?pwd=pagmffbltruagBNPmFkEWo5sxaFJrN.1 Abstract Deterministic control of nitrogen–vacancy (NV) centers in nanodiamonds (NDs) is critical for emerging applications in quantum photonics and high-density optical data storage. Conventional approaches based on random irradiation and thermal annealing often lead to nondeterministic NV formation and lattice damage, making it difficult to precisely control the optical properties of the […]

Zoom Link: https://hku.zoom.us/j/99658715385?pwd=NaDaq5EIkqa3RYU4pDDYxbz5stbh45.1 Abstract High-frame-rate ultrasound imaging is a cornerstone of modern medical diagnostics and structural monitoring, yet it remains bound by the classical trade-off between spatial resolution and acquisition speed. While conventional delay-and-sum (DAS) beamforming is the industry standard, its resolution is fundamentally limited by the transducer's diffraction pattern. This seminar introduces Null Subtraction […]

Zoom Link: https://hku.zoom.us/j/92581464035?pwd=APBvw8rHe96aZfdqA9bhiKatjwmjXe.1 Abstract Additive manufacturing enables the bottom-up fabrication of tailored and functional optoelectronic devices. However, realizing printed (opto)electronics with micro- and nanoscale features and multi-dimensional structures remains challenging. Here, we developed electrohydrodynamic (EHD) printing as the platform for the in-situ deposition of sub-micron-resolution colloidal quantum dot (QD) inks from quasi-2D monolayers to 2D […]

Zoom Link: https://us05web.zoom.us/j/82211644170?pwd=MUs6qBHh0EZskKbZOsacWOHAGHK4rQ.1 Abstract The rapid proliferation of aggregated flexible resources in active distribution systems (ADSs) calls for accurate estimation of the flexibility area (FA) at the transmission system operator–distribution system operator (TSO–DSO) interface to improve operational coordination. Meanwhile, voltage control plays a critical role in maintaining both economic and secure grid operation. However, the […]

Zoom Link: https://hku.zoom.us/j/94349548162?pwd=rk4r0ND8iT1JzXjGsg293RmHKPGrjg.1 Abstract Modern network intrusion detection systems face critical challenges in open and dynamic environments, including concept drift as threat patterns evolve, label noise as annotations are inherently unreliable, and limited interpretability as detection decisions are difficult to understand and trust. This seminar presents our recent progress toward a trustworthy intrusion detection paradigm. […]

Zoom Link: https://hku.zoom.us/j/6589092185?pwd=19EpQ4AqzgRRwQzym8vF0aaKui1J2b.1 Abstract Inference-time scaling has emerged as an effective approach for enhancing the capabilities of Large Language Models (LLMs), addressing the growing demand for stronger reasoning without increasing model size. This novel form of LLM scaling comprises two representative approaches: explicit reasoning, which generates intermediate chain-of-thought tokens during an explicit thinking phase, and […]

  Abstract Intrinsic wavelength tuning in InGaN/GaN multiple quantum wells (MQWs) is a critical aspect of optimizing their performance for various applications, including display technologies and visible light communication. This project investigates the underlying mechanisms of wavelength tuning in InGaN/GaN MQWs and explores strategies to achieve precise control over the emission wavelength. Through a combination […]