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Proceedings 2017, 1(4), 477; doi:10.3390/proceedings1040477

Restraining the Diffusion of Photocarriers to Improve the Spatial Resolution of the Chemical Imaging Sensor

Department of Electronic Engineering, Tohoku University, 6-6-05, Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
Institute of Nano- and Biotechnologies, Aachen University of Applied Sciences, Heinrich-Mußmann-Str. 1, Jülich, Germany
Peter-Grünberg Institute (PGI-8), Forschungszentrum Jülich GmbH, Leo-Brandt-Str., Jülich, Germany
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
Author to whom correspondence should be addressed.
Published: 3 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
Download PDF [1026 KB, uploaded 31 August 2017]


The chemical imaging sensor is capable of visualizing the ion distribution. The spatial resolution of the chemical image depends on the horizontal diffusion of photocarriers generated by illumination. In this study; a novel optics is designed to realize a hybrid illumination of a ring of constant light and a spot of modulated light. Improved spatial resolution of the order of few tens of microns was successfully demonstrated.
Keywords: chemical imaging sensor; high resolution; carrier diffusion chemical imaging sensor; high resolution; carrier diffusion
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Miyamoto, K.-I.; Suto, T.; Werner, C.F.; Wagner, T.; Schöning, M.J.; Yoshinobu, T. Restraining the Diffusion of Photocarriers to Improve the Spatial Resolution of the Chemical Imaging Sensor. Proceedings 2017, 1, 477.

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