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Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature
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Optical visualization of a fluid flow via the temperature controlling method.

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    A new fluid flow visualization technique uses temperature control to adjust visibility, aiding in the study of complex physical processes. This method was validated by visualizing air flow and sound using interferometry.

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    Area of Science:

    • Fluid Dynamics
    • Optical Physics
    • Acoustics

    Background:

    • Visualizing invisible fluid flows is challenging.
    • Controlling fluid appearance is crucial for studying multi-physical phenomena.
    • Existing methods may lack adaptability for complex processes.

    Purpose of the Study:

    • To propose a novel fluid flow visualization method using temperature control.
    • To enable adjustable visibility of fluid flows for enhanced observation.
    • To demonstrate the method's utility in visualizing combined flow and sound phenomena.

    Main Methods:

    • Temperature control to manipulate fluid visibility.
    • Parallel phase-shifting interferometry for measurement.
    • Experimental setup for visualizing air flow and sound.

    Main Results:

    • Successful visualization of invisible fluid flow by adjusting temperature.
    • Demonstrated ability to control fluid appearance for better observation.
    • Validation of the method through simultaneous visualization of flow and sound.

    Conclusions:

    • The proposed temperature-controlled visualization method is effective.
    • This technique facilitates the study of phenomena involving multiple physical processes.
    • The method shows promise for advanced fluid dynamics and acoustics research.