The Dance of Nanobubbles: Illuminating the Microscopic World

Submission 2025

A researcher gazes at a shimmering flow chamber filled with nanobubbles suspended in liquid.
Submitted by:Prithviraj V
Additional Collaborators:Adityasukumar Pasagadi, Agricultural, Food + Nutrition Science
Shivani Sonkar, Agricultural, Food + Nutrition Science
Department:Agricultural, Food + Nutritional Science
Faculty:Agricultural, Life + Environmental Sciences

The small sparkles in the liquid are nanobubbles—gas bubbles measuring less than 200 nanometers in diameter—that play a crucial role in various applications, ranging from water purification to healthcare. Our research investigates the behavior of these nanobubbles in diverse scenarios to gain insights into their stability, interactions, and movement within liquids. Through visual analysis of the dynamic behavior of nanobubbles, we intend to uncover new knowledge that can enhance their application in food processing and later extend to other fields as well. This image illustrates the intersection of scientific exploration and human curiosity that propels our research, depicting the focal point of study and the awe that inspires it.

Was your image created using Generative AI?
No.

How was your image created?
The photograph was produced using a specialized flow chamber, which enables the production of nanobubbles. We applied controlled lighting with an illumination control light probe, which scatters off the nanobubbles, creating a sparkling appearance within the suspension. A handheld DSLR camera (Canon Rebel T6) captured intricate details in low-light environments without disturbing the system (exposure 1/800, F Number=4.0, ISO 6400, 55-250 lens) in manual mode. The scattering in the high-pressure zone creates enough light to make the researcher visible to the camera. The researcher’s observations of those nanobubbles illustrate the effort to shed light on the invisible nanoparticle world and unveil the science behind them. This approach underscores our research emphasis on the flow dynamics of nanobubbles, allowing us to document their behaviour under controlled experimental conditions while offering a compelling representation of both the scientific process and its microscopic subject. The image was only adjusted for colour correction using Photoshop to increase the blacks in the image. Later, the final output was exported as .jpeg.

Where is the image located?
Food Safety and Sustainability Engineering Research lab, University of Alberta, during testing of nanobubble production system.