Dr. Yi-Fei Wang

Do something that really works and is useful !

Yi-Fei (Ethan) Wang, Ph.D

Project Asst. Prof @ Yamagata University

Email: dr.wangyf [at] hotmail (dot) com
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I am currently a Project Assistant Professor at Research Center for Organic Electronics (ROEL) of Yamagata University with Prof. Shizuo Tokito.

Before joining Yamagata University, I finished my Ph.D. in the Electronics and Applied Physics at Tokyo Institute of Technology (Tokyo Tech) supervised by Prof. Junichi Hanna.

During my Ph.D.(2014~2017), I studied Liquid Crystalline Organic Semiconductors and Their Applications on Organic Electronics Devices.

Since joint Yamagata University at 2018, I focuses on developing Flexible/ Stretchable Sensors based on Printed Electronics Technologies, and the Sensor System Integration for real-world applications in Wearable Devices and Robotics.

I have mastered multidisciplinary research background encompassing materials science, chemistry, electronics, and engineering, resulting in numerous publications (31) and patents (8).

NEWs

2023. 12. 25 A paper titled 'Printed Composite Film with Microporous/ Micropyramid Hybrid Conductive Architecture for Multifunctional Flexible Force Sensor' has been published by Nanomaterials (IF: 5.3).

2023. 11. 29 I delivered a talk titled 'Advancing High-Performance Printed Soft Mechanical Sensors Through Microstructure Control of Conductive Composites' at the MRS 2023 Fall Meeting in Boston, US.

2023. 10. 27 I delivered an invited talk titled 'Flexible Printed Sensor System for Healthcare and Robotic Applications' at the 13th International Conference on Flexible and Printed Electronics (ICFPE 2023) in Chengdu, China.

2023. 9. 19 I delivered a talk at the JSAP Autumn conference in Kumamoto, Kyushu, Japan.

2023. 7. 12 A paper entitled "Printed Bilayer Liquid Metal Soft Sensors for Strain and Tactile Perception in Soft Robotics" has been published by Advanced Materials Technologies.

2023. 5. 25 A paper entitled "Printed Directional Bending Sensor with High Sensitivity and Low Hysteresis for Human Motion Detection and Soft Robotic Perception” has been published by Sensors .

2023. 2. 28 I got the Grant-in-Aid for Early-Career Scientists from Japan Society for the Promotion of Science (JSPS).

Selected Publications

Takeru Kaneko, Yi-Fei Wang *, Mayuka Hori, Tomohito Sekine, Ayako Yoshida, Yasunori Takeda, Daisuke Kumaki, Shizuo Tokito *. “Printed Bilayer Liquid Metal Soft Sensors for Strain and Tactile Perception in Soft Robotics” Adv. Mater. Technol., 2300436 (2023).

Ayako Yoshida, Yi-Fei Wang *, Tomohito Sekine, Yasunori Takeda, Daisuke Kumaki, Shizuo Tokito *. “Printed Low-Hysteresis Stretchable Strain Sensor Based on a Self-Segregating Conductive Composite” ACS Appl. Eng. Mater, 1, 50-58 (2023).

Shogo Tachibana, Yi-Fei Wang *, Tomohito Sekine, Yasunori Takeda, Jinseo Hong, Ayako Yoshida, Daisuke Kumaki, Takeo Shiba, Shizuo Tokito *. “A Printed Flexible Humidity Sensor with High Sensitivity and Fast Response Using a Cellulose Nanofiber/Carbon Black Composite” ACS Appl. Mater. Interfaces, 14, 5721-5728 (2022).

Yi‐Fei Wang *, Tomohito Sekine, Yasunori Takeda, Jinseo Hong, Ayako Yoshida, Daisuke Kumaki, Takeo Shiba, Shizuo Tokito *. “Deep Eutectic Solvent Induced Porous Conductive Composite for Fully Printed Piezoresistive Pressure Sensor” Adv. Mater. Technol., 6, 2100731 (2021).

Yi-Fei Wang *, Tomohito Sekine, Yasunori Takeda, Jinseo Hong, Ayako Yoshida, Hiroyuki Matsui, Daisuke Kumaki, Takao Nishikawa, Takeo Shiba, Tadahiro Sunaga, Shizuo Tokito*. “Printed Strain Sensor with High Sensitivity and Wide Working Range Using a Novel Brittle-Stretchable Conductive Network” ACS Appl. Mater. Interfaces, 12, 35282-35290 (2020).

Yi-Fei Wang *, Tomohito Sekine, Yasunori Takeda, Koji Yokosawa, Hiroyuki Matsui, Daisuke Kumaki, Takeo Shiba, Takao Nishikawa, Shizuo Tokito *. “Fully Printed PEDOT: PSS-based Temperature Sensor with High Humidity Stability for Wireless Healthcare Monitoring.” Scientific Reports, 10, 2467 (2020).

Yi-Fei Wang, Hiroaki Iino, Jun-ichi Hanna *. “Fabrication of planarly-oriented polycrystalline thin films of smectic liquid crystalline organic semiconductors” Soft Matter, 13, 6499-6505 (2017).

Yi-Fei Wang, Hiroaki Iino, Jun-ichi Hanna *. “Solution processed nanogap organic diode based on liquid crystal materials” Applied Physics Letter, 111, 133301 (2017).

Yi-Fei Wang, Chun-Xiu Zhang *, Hao Wu, Ao Zhang, Jian-Chuang Wang, Shuai-Feng Zhang, Jia-Ling Pu. “Modulation of phase behaviors and charge carrier mobilities by linkage length in discotic liquid crystal dimers” Soft Matter, 11, 712-718 (2015).

Yifei Wang, Chunxiu Zhang *, Hao Wu, Jialing Pu. “Synthesis and mesomorphism of triphenylene-based dimers with highly ordered columnar plastic phase” Journal of Materials Chemistry C, 2, 1667-1674 (2014).