In situ patterning and controlling living cells by utilizing femtosecond laser |
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Institution: | 1. Division of Cardio-Vascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Japan;2. Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine, Japan;2. Institute for Biological Interfaces, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany |
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Abstract: | Photo-induced processes have high potential in in situ patterning and controlling living cells, whose developments are introduced and recent progresses by utilizing femtosecond laser are described. Photochemical and photothermal surface modification performed by conventional light and nanosecond laser irradiation is summarized and their applicability is considered. Femtosecond laser ablation has superior features due to its photomechanical mechanism, which is confirmed by ultrafast spectroscopy and imaging of a model film under laser ablation. Femtosecond laser ablation of physiological solutions generates shockwave and cavitation bubbles, which is employed for patterning and manipulating living cells. Femtosecond laser ablation fabricating cytophobic and cytophilic domains enable us to form living cell patterns and to study cell migration and cell–cell interaction. Finally summary and perspective are presented. |
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Keywords: | Femtosecond laser cavitation Femtosecond laser ablation Living cell manipulation Living cell patterning Cell-cell interaction Cell migration |
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