Highly selective nitric oxide sensor using terahertz metamaterials with a perovskite membrane

Authors

  • Chan-Shan Yang ⋅ TW Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taiwan

Abstract

Human breath contains hundreds of volatile organic compounds, which can be utilized to detect various physiological, cardiovascular, and endocrine disorders. For instance, the level of nitric oxide (NO) in exhaled breath can indicate chronic obstructive pulmonary disease. Analyzing exhaled gases offers a noninvasive way to diagnose diseases without posing any risk to humans. In the past twenty years, electronic sensors capable of detecting NO concentration at high temperatures have been developed. However, there has been limited research on optical detection within the ultraviolet to visible light spectrum, which can be harmful to the skin. In this study, we designed a split-ring resonator metamaterial that functions within the terahertz (THz) frequency range. We tuned the metamaterial's resonant frequency to align with the NO absorption frequency at 0.257 THz. To enhance the gas absorption capacity, we created a composite film layer of ZnTiO3 and graphene, which was applied to the metamaterial. By sintering ZnTiO3 powder at various temperatures, we increased the component sensitivity (ΔT/T) from 2% to 16.4%. This proposed metamaterial can be employed in both physical monitoring and the development of wearable electronic devices.

About the Speaker

Chan-Shan Yang, Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taiwan

Prof. Chan-Shan Yang graduated from National Chiao Tung University in 2009 with a Master's degree in Photonics Engineering. In 2014, he graduated from National Tsing Hua University with a Ph.D. in Physics. In 2012, he was selected to participate in the 62nd Lindau Nobel Laureate Meeting in Physics in Germany (only 550 young physicists worldwide were selected). In 2014, he received the 20th Dr. Bor-Uei Chen Memorial Award from the Chinese American Optics Society (the third Taiwanese person to win this award in history). He has served as a visiting scholar at Lawrence Berkeley National Laboratory in the United States (2014) and a postdoctoral researcher in the Department of Physics at the University of California, Berkeley (2016) before returning to teach at the Institute of Electro-Optical Science and Technology at National Taiwan Normal University. His research areas include terahertz (THz) photonics technology (precision measurement), low-dimensional semiconductor devices, Si photonics, and applications related to ultrafast laser pulses.
He has published over 54 papers in international journal and more than 100 conference papers, as well as authored seven chapters in international monographs. He is currently the president of the Asia THz Industry Development Association (ATIDA), continuing to promote the future development of the THz technology industry.

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Issue

Article ID

SPP-2024-INV-1J-02

Section

Invited Presentations

Published

2024-07-03

How to Cite

[1]
C-S Yang, Highly selective nitric oxide sensor using terahertz metamaterials with a perovskite membrane, Proceedings of the Samahang Pisika ng Pilipinas 42, SPP-2024-INV-1J-02 (2024). URL: https://proceedings.spp-online.org/article/view/SPP-2024-INV-1J-02.