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Related Concept Videos

The Wave Nature of Light02:12

The Wave Nature of Light

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The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
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The simplest mechanical waves are associated with simple harmonic motion and repeat themselves for several cycles. These simple harmonic waves can be modeled using a combination of sine and cosine functions. Consider a simplified surface water wave that moves across the water's surface. Unlike complex ocean waves, in surface water waves, water moves vertically, oscillating up and down, whereas the disturbance of the wave moves horizontally through the medium. If a seagull is floating on the...
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When a wave travels from one medium to another, it gets reflected at the boundary of the second medium. A common example of this is when a person yells at a distance from a cliff and hears the echo of their voice. The sound waves (longitudinal waves) traveling in the air are reflected from the bounding cliff. Similarly, flipping one end of a string whose other end is tied to a wall causes a pulse (transverse wave) to travel through the string, which gets reflected upon reaching the wall. In...
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Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:
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Related Experiment Video

Updated: Feb 6, 2026

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
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Optical detection of acoustic waves with surface plasmons.

A A Kolomenskii, E Surovic, H A Schuessler

    Applied Optics
    |August 18, 2018
    PubMed
    Summary

    This study explores surface plasmon resonance (SPR) for acoustic wave detection. Simulations indicate an optimal acousto-optical transducer design offers broadband, sensitive acoustic signal conversion.

    Area of Science:

    • Photonics
    • Acoustics
    • Materials Science

    Background:

    • Surface plasmon resonance (SPR) detects dielectric variations near metal films.
    • Acoustic waves can modulate these dielectric properties via surface displacement.
    • SPR offers potential for sensitive acoustic wave detection.

    Purpose of the Study:

    • Investigate acousto-optical transducer characteristics using SPR.
    • Determine optimal configuration for efficient acoustic-to-optical signal conversion.
    • Evaluate transducer performance for broadband and sensitive acoustic detection.

    Main Methods:

    • Simulated the properties of an acousto-optical transducer utilizing SPR.
    • Analyzed the transducer's response to acoustic wave incidence.

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  • Optimized the transducer configuration for enhanced performance.

    • Main Results:

    • Demonstrated SPR's applicability for acoustic wave detection.
    • Identified key parameters for efficient acoustic-to-optical conversion.
    • Estimated transducer performance, including frequency bandwidth and sensitivity.

    Conclusions:

    • The developed SPR-based acousto-optical transducer shows promise for broadband and sensitive acoustic detection.
    • Optimal configuration is crucial for maximizing acoustic-to-optical signal conversion efficiency.
    • This technology offers a novel approach for acoustic sensing applications.