Fluorescence enhancement of organic dyes by femtosecond laser-induced cavitation bubbles for crystal imaging

This study proposes a novel method for measuring the pressure inside a laser-induced cavitation bubble during its expansion. Based on Paschen's theory, which relates electrical breakdown to gas pressure, applied voltage, and electrode distance, our approach uses two electrodes to estimate the cavitation bubble pressure at different expansion stages by noting the breakdown time at varying voltages. This method offers a high temporal resolution owing to its rapid electrical discharge response. The unveiled pressure during the expansion phase was approximately 0.4 atm. This value contradicts previous reports that assumed that the minimum pressure was close to the water vapor pressure.

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Fluorescence enhancement of organic dyes by femtosecond laser-induced cavitation bubbles for crystal imaging

Abstract: Fluorescence from organic dyes can be applied in many research fields such as imaging, bio sensing and diagnosis. One shortcoming of the fluorescence imaging is the limitation in emission intensity....

Cited by 4 publications

References 37 publications

A review of ultrafast laser micro/nano fabrication: Material processing, surface/interface controlling, and devices fabrication

A review of ultrafast laser micro/nano fabrication: Material processing, surface/interface controlling, and devices fabrication

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An innovative method of pressure measurement inside a laser-induced cavitation bubble

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