2026-08-25 Cheminės Fizikos instituto mokslinis seminaras. Pranešėjas Prof. Wei-Hung Chiang iš Taivanio nacionalinio Mokslo ir Technologijų Universiteto
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Cheminės Fizikos instituto mokslinis seminaras 2026 08 25 d. 14 val. NFTMC D401 auditorijoje Pranešėjas Prof. Wei-Hung Chiang iš Taivanio nacionalinio Mokslo ir Technologijų Universiteto |
Research Profile:
Prof. Chiang’s group is partner of LT-TW project is being carried out together with spectrocopists from Vilnius University and FTMC.
His research focuses on non-equilibrium plasma chemistry and the synthesis of functional semiconductor nanomaterials, particularly through plasma–liquid interfaces that enable energy-efficient and low-temperature materials processing. His early work on catalyst-controlled growth of single-walled carbon nanotubes established strategies for tuning chirality distributions in semiconducting carbon nanotubes. His group develops plasma-enabled approaches for synthesizing quantum-sized nanostructures, including graphene quantum dots, nanographene materials, carbon nanotubes, and plasmonic–semiconductor hybrid nanostructures with tunable electronic and optical properties. These materials exhibit tunable band structures and quantum confinement effects, enabling applications in optoelectronics, sensing, and energy conversion. A key direction of his research is the development of sustainable synthesis strategies, including plasma-enabled conversion of carbon-rich feedstocks such as plastic waste and biomass into functional nanocarbon semiconductors. His work aims to advance plasma-enabled approaches for bandgap engineering and electronic structure control in emerging semiconductor nanomaterials.
Wei-Hung Chiang*
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
ABSTRACT
Zero-dimensional (0D) nanostructures with tunable properties are at the forefront of materials research due to their critical roles in biomedical, optoelectronic, clean energy, and sustainable engineering applications. However, synthesizing such catalysts in a rapid, controlled, low-energy-consumption, and environmentally friendly manner remains a significant challenge. Here, we employ non-equilibrium, atmospheric-pressure microplasmas with tuned electron energies and densities to synthesize structure- and composition-controlled 0D nanostructures under ambient conditions—without the use of toxic chemicals, expensive processes, or complex vacuum technologies [1-4]. The reactive species generated by the plasma not only rapidly break down precursors into small molecular fragments but also simultaneously drive the formation of crystalline domains and catalyst nucleation. In this presentation, I will discuss plasma engineering strategies for tailoring catalyst synthesis. This work offers new insights into 0D nanostructures growth mechanisms through a renewable electricity-driven, scalable, and sustainable approach.
- -J. Yeh, S.-Y. Chen, W. W.-W. Hsiao, Y. Oshima, M. Takahashi, S. Maenosono, K.-L. Tung, and W.-H. Chiang*, Single-Molecule-Sensitive Three-Dimensional Atomic Heterostructures with Extreme Light-Mater Coupling, J. Am. Chem. Soc., 2025, 147, 10, 8227–8239. Featured as the Front Cover
- H. Akmal, D. Kurniawan, S. Wu, and W.-H. Chiang*, Plasma-Tailored Carbon Dots with Atomic-Level sp²/sp³ Hybridization for Programmable Band Structures and Optothermal Functionality, Small, 2025, 21, e06831
3. C.-H. Lin, Y.-J. Yeh, T.-H. Chien, S.-Y. Chen, L. Veeramuthu, C.-C. Kuo, K.-L. Tung, and W.-H. Chiang*, Compact Disc-Derived Nanocarbon-Supported Catalysts with Extreme Degradation Activity, ACS Appl. Mater. Interfaces., 2025, 17, 5, 8147–8157.
4.. Y.-J. Yeh and W.-H. Chiang*, Ag Microplasma-Engineered Nanoassemblies on Cellulose Papers for Surface-Enhanced Raman Scattering and Catalytic Nitrophenol Reduction, ACS Appl. Nano Mater., ., 2021, 4,6364-6375
