NAIST Division of Materials Science

Miss Nattakarn Wuthibenjaphonchai, 2nd year doctoral course student of Photonic Device Science Laboratory was awarded a IEEE (The Institute of Electrical and Electronics Engineers) BioCAS 2018 Student Travel Grants(Charles Desoer Grant).

Miss Nattakarn Wuthibenjaphonchai of Photonic Device Science Laboratory was awarded a BioCAS 2018  Student Travel Grants(Charles Desoer Grant). The conference was held in Cleveland, Ohio, USA on October 17-19, 2018. There were 170 students who participate and present in BioCAS2018. From all of the students, 21 students receive the student travel grants and the top 2 of 21 students received a difference title grant called “Charles Desoer Grant“.


【Miss Nattakarn Wuthibenjaphonchai , Prof. Jun Ohta】

$1300 was awarded to her to cover expenses associated with attendance at BioCAS 2018.


– Student Travel Award Winners list:

– Charles Desoer Grant:

Battery-Free Sticker-Like Device for Health Monitoring Operated by Optical Power Transfer

Nattakarn Wuthibenjaphonchai, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Mohamad Sawan, Sandro Carrara, Jun Ohta

To be considered for a Charles Desoer Grant is a great honor and privilege. Receiving this award greatly motivates and give me a good chance to develop my research. I would like to sincerely thank you all Professors in Photonic device science laboratory, Prof. Sandro Carrara from Switzerland and Prof. Mohamad Sawan from Canada. I deeply appreciate to work and train under their advice. Without their support, I could not have made it.

This work presents the concept of a battery-free, sticker-like, device for a non-invasive health-monitoring sensor. The device consists of two functional blocks: an optical power-transfer block and an amperometric measurement block. The former accumulates power from a series-connected photovoltaic cell in a capacitor and intermittently supplies the power to the amperometric measurement circuit. This circuit is driven by powering pulses and displays the amperometric current as the durations of the light pulses from a light-emitting diode. The function of the circuit was successfully demonstrated through simulations, in which the equivalent circuit of an electrochemical glucose sensor was used as an example. The simulation results showed that the proposed device would work as expected for a variety of glucose concentrations at an oxidation voltage of 0.8 V.


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