Stephen Tai

• Plan and implement R&D projects with application of nanofibers • Coordinate procurement of Nanospider™ and other laboratory equipments • Conduct electrospinning trials for determining standards of acceptance test • Create simple standard tests to for QC of nanofibers and raw materials • Cooperate with university in research • Assist in formation of R&D team and admission into HKSTP • Assist in making floor plan of laboratory and discussion with contractor • Integrate R&D sector into current ISO13485 QMS

Project: Classification & Feature-based image compression of multi-ATOM cell images using CNNs • Programming languages: Python & PyTorch • Classification on 7 types of lung cancer cells and 2 types of breast cancer cells • Analysis of latent space in U-Net • Customize the parameters of U-Net for optimizing the performance • Automatic removal of image background for better feature extraction of the cells • Side project: Auto-focusing of microfluidic chip • Use SQL as a log book for CNN training

• Project: Development of automatic 3D segmentation algorithm of brain lesions (black holes) on T1-weighted (T1w) MR images of multiple sclerosis patients • Programming language: MATLAB, Python & PyTorch • Dynamic threshold approach: Identify T1 lesions by a threshold based on FLAIR lesions and local variable intensity • Deep learning approach: Training of model with U-Net • Side project: Segmentation of total intracranial volume on T1w images using U-Net → Result: Better than conventional method

I work on the project about building a Graphical User Interface (GUI) for Sub-bottom Profiler. Sub-bottom Profilers identify the sediment layers below the seabed by analysing the reflected echoes. GUI provides a platform for displaying the signal as well as allowing user to process the signal for the extraction of important features. MATLAB GUIDE is used in this project.

Our team focused on needleless electrospinning using Elmarco Nanospider. My major task was product development and optimisation, but also responsible for technology transfer, industrialising the production, explaining the results to clients and brainstorming new ideas for other potential products. The commercial product already available on the market is NASK Smart Mask.

The research group focuses on photoacoustic imaging and tomography. I was responsible for two projects, one is absolute temperature measurement and the other one is respiratory gating. Thanksful to the research group, two journals were published at later days.

Medical Imaging, Medical Devices, Biomedical Ultrasound, Biomedical Signals and Systems