Bulk nanobubbles, nanoscopic gaseous domains in aqueous solutions, exhibit surprising long-term stability and unique properties under varying environmental conditions. This study investigates the effects of external pressure on nanobubble stability and behavior through three experimental setups: pressurization at room temperature, pressurization at elevated temperatures, and constant pressure loading. Our findings reveal that increasing external pressure reduces nanobubble concentration and reshapes the bubble size distribution. Larger nanobubbles either disappeared or transformed into microbubbles, while smaller ones expanded, significantly narrowing the size distribution. These changes were found to be irreversible. Additionally, nanobubble stability is influenced by both the magnitude and duration of the applied pressure. Elevated temperatures further narrowed the size distribution at atmospheric pressure, and subsequent pressurization caused these nanobubbles to shrink, showing different response characteristics compared to room temperature. This research highlights the complex interplay between pressure, temperature, and nanobubble stability, offering valuable insight for practical applications in fields such as drug delivery, water treatment, and nanomaterial synthesis.
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September 2024
Research Article|
September 03 2024
How bulk nanobubbles respond to elevated external pressures Available to Purchase
Mingbo Li
;
Mingbo Li
a)
(Conceptualization, Funding acquisition, Investigation, Methodology, Resources, Software, Visualization, Writing – original draft)
1
Key Laboratory of Hydrodynamics (Ministry of Education), School of Ocean and Civil Engineering, Shanghai Jiao Tong University
, Shanghai 200240, China
a)Author to whom correspondence should be addressed: [email protected]
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Yawen Gao;
Yawen Gao
(Formal analysis, Investigation, Software, Visualization)
2
New Cornerstone Science Laboratory, Center for Combustion Energy, Key Laboratory for Thermal Science and Power Engineering of MoE, Department of Energy and Power Engineering, Tsinghua University
, Beijing 100084, China
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Xiaotong Ma;
Xiaotong Ma
(Methodology, Software, Visualization, Writing – original draft)
2
New Cornerstone Science Laboratory, Center for Combustion Energy, Key Laboratory for Thermal Science and Power Engineering of MoE, Department of Energy and Power Engineering, Tsinghua University
, Beijing 100084, China
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Changsheng Chen;
Changsheng Chen
(Investigation, Software, Validation, Visualization)
2
New Cornerstone Science Laboratory, Center for Combustion Energy, Key Laboratory for Thermal Science and Power Engineering of MoE, Department of Energy and Power Engineering, Tsinghua University
, Beijing 100084, China
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Benlong Wang
;
Benlong Wang
(Investigation, Resources, Software, Validation)
1
Key Laboratory of Hydrodynamics (Ministry of Education), School of Ocean and Civil Engineering, Shanghai Jiao Tong University
, Shanghai 200240, China
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Chao Sun
Chao Sun
(Conceptualization, Resources, Supervision, Validation, Visualization)
2
New Cornerstone Science Laboratory, Center for Combustion Energy, Key Laboratory for Thermal Science and Power Engineering of MoE, Department of Energy and Power Engineering, Tsinghua University
, Beijing 100084, China
3
Department of Engineering Mechanics, School of Aerospace Engineering, Tsinghua University
, Beijing 100084, China
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Mingbo Li
1,a)
Yawen Gao
2
Xiaotong Ma
2
Changsheng Chen
2
Benlong Wang
1
Chao Sun
2,3
1
Key Laboratory of Hydrodynamics (Ministry of Education), School of Ocean and Civil Engineering, Shanghai Jiao Tong University
, Shanghai 200240, China
2
New Cornerstone Science Laboratory, Center for Combustion Energy, Key Laboratory for Thermal Science and Power Engineering of MoE, Department of Energy and Power Engineering, Tsinghua University
, Beijing 100084, China
3
Department of Engineering Mechanics, School of Aerospace Engineering, Tsinghua University
, Beijing 100084, China
a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 36, 092003 (2024)
Article history
Received:
June 04 2024
Accepted:
August 17 2024
Citation
Mingbo Li, Yawen Gao, Xiaotong Ma, Changsheng Chen, Benlong Wang, Chao Sun; How bulk nanobubbles respond to elevated external pressures. Physics of Fluids 1 September 2024; 36 (9): 092003. https://doi.org/10.1063/5.0221882
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