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Photonic Device Science Laboratory

Staff & Contact

Educational Staff Prof. Jun Ohta
Associate Prof. Kiyotaka Sasagawa
Associate Prof. Hiroyuki Tashiro
Assistant Prof. Makito Haruta
Assistant Prof. Hironari Takehara
Contact TEL: +81-743-72-6051
URL https://mswebs.naist.jp/LABs/pdslab/index-e.html

Education and Research Activities in the Laboratory

1. Laboratory outline
The Photonic Device Science Laboratory researches and develops new optical functionality-based material science and device functions for fast, flexible processing of image information that promises to play a leading role in an advanced information society and a "super aging society." Specifically, we work on applying photonic LSI technology, which integrates semiconductor circuit technology and photonic technology, toward biological and medical field applications as shown in Fig. 1. Our typical research fields include bio-medical photonic LSls and artificial vision devices.

2. Research activity and policy
With our research subjects crossing over various research fields, we actively pursue cooperative interdisciplinary studies. For example, we are conducting joint research on artificial vision with the Department of Ophthalmology of Osaka University Graduate School of Medicine and an ophthalmologic apparatus manufacturer and also performing joint research on bio-medical photonic LSIs with the Functional Neuroscience Laboratory of NAIST.

3. Education
The majority of students in the laboratory are requested to work on research subjects involving other fields. We provide introductory seminars, study meetings, and many opportunities to interact with researchers within and outside the university so that they can pursue their research smoothly and broaden their research perspectives.

Research Themes

1. Bio-medical photonic materials and devices  
2. Micro-chemical photonic devices  
3. Advanced image sensors and their application systems

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Fig. 1
Research fields of the Photonic Device Science Lab

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Fig. 2
Retinal prosthesis device

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Fig. 3
Brain implantable microimager

Recent Research Papers and Achievements

1. M. Haruta, Y. Kurauchi, M. Ohsawa, C. Inami, R. Tanaka, K. Sugie, A. Kimura, Y. Ohta, T. Noda, K. Sasagawa, T. Noda, T. Tokuda, H. Katsuki, J. Ohta, "Chronic Brain BloodFlow Imaging Device for A Behavioral Experiment Using Mice," Biomed. Opt. Express 10, 1557, (2019).  
2. J. Ohta, Y. Ohta, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, M. Haruta, T. Kobayashi, Y. M. Akay, M. Akay, "Implantable Microimaging Device for Observing Brain Activities of Rodents," Proc. IEEE 105, 158 (2017).  
3. K. Sasagawa, T. Yamaguchi, M. Haruta, Y. Sunaga, H. Takehara, H. Takehara, T. Noda, T. Tokuda, and J. Ohta, "An Implantable CMOS Image Sensor with Self-Reset Pixels for Functional Brain Imaging," IEEE Trans. Electron Dev. 63, 215 (2016).