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Research and Development of High-performance Explosives

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Published on: February 20, 2016

Giant and explosive plasmonic bubbles by delayed nucleation.

Yuliang Wang^1,2, Mikhail E Zaytsev^2,3, Guillaume Lajoinie^2,4

¹Robotics Institute, School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, People's Republic of China; d.lohse@utwente.nl wangyuliang@buaa.edu.cn.

Proceedings of the National Academy of Sciences of the United States of America

|July 13, 2018

Summary

Researchers reveal the early life of plasmonic vapor bubbles using ultrahigh-speed imaging. Giant bubbles explosively grow and collapse within 200 μs, with their volume inversely related to laser power.

Keywords:

energy conversion nucleation dynamics plasmonic bubbles superheat vaporization

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Area of Science:

Physics
Nanotechnology
Materials Science

Background:

Plasmonic nanoparticles efficiently convert laser light into heat.
The formation and long-term behavior of plasmonic vapor bubbles are understood.
The initial nucleation and rapid dynamics of these bubbles remain less explored.

Purpose of the Study:

To investigate the nucleation and early dynamics of plasmonic vapor bubbles.
To understand the factors influencing bubble growth, collapse, and nucleation temperature.
To elucidate the distinct life phases of plasmonic vapor bubbles.

Main Methods:

Utilizing ultrahigh-speed imaging to capture bubble evolution.
Systematically varying laser power and water gas concentration.
Analyzing bubble volume, collapse times, and delay times.

Main Results:

A giant plasmonic vapor bubble explosively grows and collapses within 200 μs.
Maximal bubble volume scales inversely with laser power, independent of gas concentration, indicating pure vapor origin.
Bubble nucleation delay is influenced by dissolved gas, affecting nucleation temperature.

Conclusions:

The initial phase of plasmonic vapor bubble formation is characterized by explosive growth and rapid collapse.
Bubble dynamics are governed by laser power and dissolved gas content.
Understanding these early stages is crucial for harnessing plasmonic bubble applications.