Imaging dynamic heterogeneity of soft matter by fluctuation microscopy (Conference Presentation)

Jun Yamamoto

doi:10.1117/12.2649513

14 March 2023 Imaging dynamic heterogeneity of soft matter by fluctuation microscopy (Conference Presentation)

Jun Yamamoto

Proceedings Volume PC12442, Emerging Liquid Crystal Technologies XVIII; PC1244204 (2023) https://doi.org/10.1117/12.2649513
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

We recently invented a new fluctuation microscopy principle and constructed a prototype system for observing dynamic heterogeneity of soft matter. We proved that a spatial resolution of 1 μm could be achieved with this microscope. We also prepared a nematic liquid crystal cell with a mixture of azo dye and liquid crystal. When this cell was irradiated with the blue letter "JUN" using a pattern irradiation device, the relaxation time of the irradiated area slowed down, and the relaxation time change appeared as a character pattern on the fluctuation microscope. The post-irradiation changes of the character patterns were recorded as moving images of the dynamic heterogeneity. The speed at which the pattern appears is faster than the current frame rate of video recording (~20ms).

Conference Presentation

Citation Download Citation

Jun Yamamoto "Imaging dynamic heterogeneity of soft matter by fluctuation microscopy (Conference Presentation)", Proc. SPIE PC12442, Emerging Liquid Crystal Technologies XVIII, PC1244204 (14 March 2023); https://doi.org/10.1117/12.2649513

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