Nanobubbles and Nanodroplets: Current State-of-the-Art

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (20 April 2025) | Viewed by 1739

Special Issue Editors


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Guest Editor
Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201400, China
Interests: nanobubbles; nanodroplets; colloids; biological effects; nano image techniques
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Guest Editor
Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto 6110011, Japan
Interests: nanobubbles; electrical engineering; microbubble; environmental engineering

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Guest Editor
State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
Interests: thermodynamics; nanodroplets; nanobubbles

Special Issue Information

Dear Colleagues,

Nanomaterials, such as nanobubbles and nanodroplets, are submicron domains dispersed in solutions or on liquid/solid surfaces, which can survive for several hours or even days. It has been recognized that the stable existence of nanobubbles/nanodroplets may have significant effects on many important processes such as protein folding, peptide self-assembly, boundary slip, and activities of electrochemical reactions. Also, in recent years, nanobubbles have been widely used in water treatment, aquaculture, agricultural cultivation, health preservation, mineral flotation, and many other fields. However, the fundamental question of why surface and bulk nanobubbles can exist stably is still under debate because the paradox of a short lifetime predicted by the Epstein–Plesset theory and the observed long lifetime of nanobubbles in water has not yet been resolved. Moreover, many mechanisms of nanobubbles used in various applications, for example, aggregation states in different solutions, biological effects and interfacial properties, require further study.

Similarly, nanodroplets are used often in bioengineering and nanotechnology. Their advantageous properties of good biocompatibility, inertness, ultrasound responsiveness, high gas dissolution capacity, temperature-sensitive phase transitions, acoustic cavitation, versatility in imaging, and tunability make them valuable in biomedical, nanotechnological, and therapeutic applications. But how to control their size and concentration is key in their application in achieving high efficiency.

This Special Issue of Nanomaterials aims to present the current state of the art in the fundamental research of nanobubbles/nanodroplets and their applications. In the present Special Issue, we have invited contributions from leading groups in the field with the aim of giving a balanced view of the current state of the art in this discipline.

Prof. Dr. Lijuan Zhang
Dr. Yoshikatsu Ueda
Prof. Dr. Xianren Zhang
Guest Editors

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Keywords

  • nanobubbles
  • ultrafine bubbles
  • nanodroplets
  • environmental sciences
  • biological applications
  • interfacial effects

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Published Papers (1 paper)

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Review

21 pages, 2983 KiB  
Review
Micro-Nano Bubbles: A New Field of Eco-Friendly Cleaning
by Nan Guan, Yao Wang, Jun Hu and Lijuan Zhang
Nanomaterials 2025, 15(7), 480; https://doi.org/10.3390/nano15070480 - 23 Mar 2025
Viewed by 1053
Abstract
Due to increasing public awareness of environmental concerns and stricter cleaning process requirements, traditional cleaning technologies characterized by high pollution, excessive energy consumption, and substantial damage are insufficient to meet contemporary demands. There is an urgent need for efficient, low-damage, and environmentally friendly [...] Read more.
Due to increasing public awareness of environmental concerns and stricter cleaning process requirements, traditional cleaning technologies characterized by high pollution, excessive energy consumption, and substantial damage are insufficient to meet contemporary demands. There is an urgent need for efficient, low-damage, and environmentally friendly cleaning technologies. In recent years, the rapid advancement of micro-nano bubbles (MNBs), which exhibit unique physicochemical properties, have emerged as a promising solution for green cleaning applications. This review begins with an overview of the benefits of MNBs in cleaning processes, followed by an in-depth analysis of the factors influencing their cleaning effectiveness as well as the possible mechanisms involved. Additionally, the producing and application of MNBs across various cleaning scenarios are summarized. Finally, prospects for their development are discussed. Research and advancements in MNB preparation technologies are expected to boost their applicability and commercialization in a greater variety of cleaning contexts in the future. Full article
(This article belongs to the Special Issue Nanobubbles and Nanodroplets: Current State-of-the-Art)
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