Lecture by Dr. Gábor Méhes from Waseda University, Japan

Institute of Electrical Engineering invites you to a lecture by Dr. Gábor Méhes (Waseda University, Japan) on 8 October, 2025 at 9:30 a.m. in the IEE SAS Meeting Room 101 at Dúbravská Cesta 9 in Bratislava.

Title of the lecture: Advancements in the fields of organic electronics and bioelectronics through research in Japan, Sweden, and the US.

Dr. Gábor Méhes is a Lecturer at Waseda University, Japan. He completed his PhD in 2014 in organic photonics and electronics in Kyushu University, Japan. Dr. Méhes has been engaged in research in organic electronics, bioelectronics, microbial electrochemistry, photosynthetic energy harvesting, printed and flexible hyrid electronics for over forteen years. Throughout his scientific career, he had the chance to engage in scientific endeavaors  in several world-leading laboratories in Japan, Sweden and the United States. His lecture will include knowledge gained from his work experience from these laboratories.

This visit is supported under the Mobility Visit program by the Slovak Academy of Sciences.

Abstract:
Organic electronics is centered around pi-conjugated molecules with electrically conducting, semiconducting or light-absorbing/emitting properties. When made into high quality thin films organized into multilayered structures capped with electrode layers, these molecules can give life to electronic devices that can be flexible, stretchable, or emit bright colors. By reacting or associating with ionic species, organic electronic devices can even bridge the communication gap between electronic and biological domains, for example in the forms of organic electrochemical transistors (OECT) and organic electronic ion pumps (OEIP) used for biosensing and drug delivery, respectively.

In the first part of the talk, I will briefly introduce the field of organic electronics, along with my research experiences in small molecular thermally-activated delayed fluorescence (TADF) based organic light-emitting diodes (OLED) acquired at Kyushu University, located in southern Japan. From there, we will journey to Sweden, Linköping University, to my next research stage, to see how conducting polymers (and devices) can be integrated onto and into plants for a variety of purposes. This will be followed by a short (2 months) journey to northern California, Berkeley Lab, where I got insights into electroactive bacteria, their utilization for various microbial energy conversion technologies, and what organic electronics can offer to enhance the bacterial signal extraction. Heading back to Japan, this time to the northeastern region of Yamagata University, where I also spent over a year, we will make a detour to learn about a flexible hybrid SpO2 and heart rate monitoring printed flexible hybrid electronic (FHE) device. If time and interest allows, or during coffee discussions, we can dwell into some more works, especially those I engaged in since 2022, when I joined my current position Waseda University. Some of the works offered for discussion are wireless oral pathogen detection, redox polymer interfaces for bacteria, selfsterilizing face masks, ionic logic circuits, nanotube cell delivery system.

Selected references:

https://www.sciencedirect.com/science/article/pii/S1566119914002067?via%3Dihub

Screen-Printing, Advanced Electronic Materials 2024.05, https://onlinelibrary.wiley.com/doi/full/10.1002/aelm.202300615

Contact person:

Ing. Tibor Izsák, PhD.
Institute of Electrical Engineering
Slovak Academy of Sciences
Dúbravská cesta 9, 841 04 Bratislava
Slovak Republic
Tel: +421-2-5922 2778
Web: http://www.elu.sav.sk