Invited Speakers

Advances in Self-Powered Sensing: Triboelectric
Nanosensors for Selective and Versatile Detection

Prof. Zong-Hong Lin
National Taiwan University, Taiwan
E-mail : zhlin@ntu.edu.tw

The development of self-powered sensing devices has gained significant momentum in recent years, driven by the need for sustainable and autonomous sensing technologies. Triboelectrification, the phenomenon where contact between two materials induces charge transfer and generates oppositely charged surfaces, forms the basis of these devices. When integrated with electrostatic induction, this mechanism enables the fabrication of functional devices broadly classified as triboelectric nanogenerators (TENGs) for energy harvesting and triboelectric nanosensors (TENSs) for self-powered sensing. In our previous work, we demonstrated that surface-functionalized TENSs can selectively detect specific targets, such as ions, biomolecules, and microorganisms, by generating distinct electrical signals upon target interaction. These changes in signal output allow both qualitative and quantitative analyses. More recently, we have advanced this concept through the development of solid-liquid interface TENSs, enabling improved detection performance and expanding the range of detectable targets. These innovations not only address key limitations of solid-solid TENSs but also establish foundational sensing mechanisms and operation principles. Our ongoing efforts aim to further broaden the application potential of solid-liquid TENSs in environmental monitoring, healthcare diagnostics, and smart sensing platforms.

Biography
Dr. Zong-Hong Lin received his PhD from National Taiwan University (NTU) in 2009 and conducted his postdoctoral research at NTU and Georgia Tech from 2010 to 2014. He joined National Tsing Hua University (NTHU) as an Assistant Professor in 2014, and was promoted to Associate Professor in 2017 and Full Professor in 2021. In 2023, he moved to NTU. He has published over 190 SCI papers (citations >19,500; h-index 70). His research achievements have been recognized by several awards, including the Wu Ho-Su Medical Award of Taiwan Bio-Development Foundation (2025), Young Scholar Innovation Award of Foundation of the Advancement of Outstanding Scholarship (2025), Outstanding Research Scholar of Lee Chao-Jen Foundation (2024), CHEN-YUNG Chair Professor (2023) of NTU, Top 1% Outstanding Scholarly Publication Award of NTU (2025), Academic Excellence Award-College of Engineering of NTU (2023), Fellow of Royal Society of Chemistry (2022), Outstanding Research Award of Taiwan National Science and Technology Council (NSTC) (2023), Future Tech Award of Taiwan NSTC (2021, 2022, 2023 and 2024), Ta-You Wu Memorial Award of Taiwan NSTC (2021), Young Scholar Fellowship of Taiwan NSTC (2020), IEEE-NANOMED New Innovator Award (2019) and Young Investigator Award of NTHU (2018).

Nanoparticle Arrays Fabrication for Raman Enhancing and
Electrochemical Sensors in Bio and Environmental Detection

Prof. Ting-Yu Liu
Ming Chi University of Technology, Taiwan
E-mail : tyliu0322@gmail.com

We demonstrate a facile and cost-effective method for fabricating a laser-scribed graphene (LSG)-based platform that serves as both an electrochemical (EC) and surface-enhanced Raman spectroscopy (SERS) substrate for biological and environmental detection. The LSG substrate was prepared via direct laser scribing, followed by the deposition of gold nanoparticles (Au NPs) through thermal evaporation or electrochemical deposition. The three-dimensional porous microstructure of the LSG enhances the SERS signal of the Au@LSG substrate, while fine-tuning the Au NP thickness (5–25 nm) further optimizes the EC-SERS enhancement. The developed sensor exhibits excellent performance in detecting uremic toxins. Among the tested configurations, the substrate coated with 20 nm Au NPs provides the highest SERS enhancement and successfully detects both dye molecules (rhodamine 6G, R6G) and uremic toxins (urea, uric acid, and creatinine). The EC-SERS intensity of R6G is enhanced by 17-fold at an applied potential of –1.3 V compared to SERS without an electric field, while urea shows a fourfold increase at –0.2 V. Furthermore, the sensor achieves remarkably low detection limits (10⁻³ M for creatinine and uric acid, and 10⁻⁴ M for urea) and displays distinct, concentration-dependent responses in cyclic voltammetry (CV) measurements. By applying different voltages, specific molecules can be selectively enhanced, demonstrating the platform’s capability for the target detection of biomolecules, bacteria, and viruses. This strategy effectively addresses challenges associated with complex sample pretreatment and highlights the potential of Au@LSG-based EC-SERS substrates for versatile sensing applications.

Biography
Dr. Ting-Yu Liu received his PhD degree at Department of Materials Science and Engineering, National Chiao Tung University, Taiwan in 2008. He visited the Department of Materials Science and Engineering, University of Pennsylvania, USA for 1-year research. After that, he was the post-doc fellow at Institute of Atomic and Molecular Sciences, Academia Sinica, Taiwan from 2009 to 2011, and project assistant professor in Institute of Polymer Science and Engineering, National Taiwan University from 2011 to 2013. He is currently a distinguished professor at Department of Materials Engineering, Ming Chi University of Technology, and College of Engineering, Chang Gung University, Taiwan. His research covers nanomaterials, biomaterials, polymer composites, optoelectronic (surface-enhanced Raman scattering, SERS) detection and electrochemical sensing. He has published more than 160 SCI-indexed journal articles and has gotten h-index of 40 according to the citation report from Google Scholar. Furthermore, he is Top 2% Scientists at Worldwide 2022 by Stanford University.

Mass-production method of moth-eye structured film and fabrication
of micro-nano hybrid structure using moth-eye structure

Prof. Jun Taniguchi
Department of Applied Electronics
Tokyo University of Science, Japan
E-mail : jun@te.noda.tus.ac.jp

Moth-eye structure is one of biomimetic structure which has anti-reflection property. To fabricate this structure, we have developed the method of oxygen ion beam irradiation to glassy carbon (GC) material. GC is carbon-based material and after irradiation of oxygen ion beam, this surface gets rough and this structure has nano-scale conical structure, thus, moth-eye structure can be obtained self-assembly. Using this technique, scale-up technique has been developed. First, roll mold was fabricated by sputter deposition of GC to roll surface, then oxygen ion beam was irradiated by reactive ion etching equipment. Fabricated moth-eye roll mold was set on roll-to-roll Ultraviolet nanoimprint lithography (RTR UV-NIL) machine and transferred to film surface. Transferred moth-eye structured film had also low reflection (ca. 0.1% for visible light wavelength) and high transparency (ca. 94%). This film has continuously transferred with 1.5 m film width, so mass-production of moth-eye structure film is possible. Developed moth-eye structured films can use for show window, show case, digital signage and so on. In order to further improve functionality by utilizing the moth-eye structure, a micro-nano hybrid structure was fabricated. This method involves applying a hydrophilic photoresist to the moth-eye surface to form a micropattern, then filling the moth-eye surface with a water-repellent UV-curable resin, irradiating it with UV light, and then releasing the micropattern to create a hydrophilic region on a micron scale within the water-repellent moth-eye. As a result, an adhesive, water-repellent surface known as the rose petal effect was created, and water droplets could also be aligned on the hydrophilic region, making it possible to use the surface for water droplet alignment.

Biography
Dr. Jun Taniguchi is a professor in the Department of Applied Electronics at Tokyo University of Science (Tokyo, Japan). He received the BE, ME and PhD degrees from Tokyo University of Science, in 1994, 1996 and 1999, respectively. From 1999 to 2025, he was with Department of Applied Electronics, Tokyo University of Science.