Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Echo

Echo

The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case, then the...

Fast Fourier Transform

Fast Fourier Transform

The Fast Fourier Transform (FFT) is a computational algorithm designed to compute the Discrete Fourier Transform (DFT) efficiently. By breaking down the calculations into smaller, manageable sections, the FFT significantly reduces the computational complexity involved. Direct computation of an N-point DFT requires N2 complex multiplications, whereas the FFT algorithm needs only (N/2)log⁡2N multiplications, offering a much faster performance.
The computational efficiency of the FFT becomes...

Major Losses in Pipes

Major Losses in Pipes

When a fluid flows through a pipe, it experiences energy losses due to frictional resistance along the pipe walls, known as major losses. These energy losses result in a pressure drop, which varies based on the flow conditions — whether laminar or turbulent — and the specific physical properties of the fluid and pipe.
Fluid flow can be classified as laminar or turbulent, primarily based on the Reynolds number. This dimensionless number reflects the relative influence of inertial to viscous...

Interference: Path Lengths

Interference: Path Lengths

Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...

Fast Decoupled and DC Powerflow

Fast Decoupled and DC Powerflow

The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:

Transmission-Line Differential Equations

Transmission-Line Differential Equations

Transmission lines are essential components of electrical power systems. They are characterized by the distributed nature of resistance (R), inductance (L), and capacitance (C) per unit length. To analyze these lines, differential equations are employed to model the variations in voltage and current along the line.
Line Section Model
A circuit representing a line section of length Δx helps in understanding the transmission line parameters. The voltage V(x) and current i(x) are measured from the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Photoacoustic effect as a liquid absorbance detector.

Applied optics·2010

Same author

A comparison of single-versus double-row suture anchor techniques in a simulated repair of the rotator cuff: an experimental study in rabbits.

The Journal of bone and joint surgery. British volume·2008

Same author

Surface micromachined capacitive ultrasonic transducers.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2008

Same author

Theory and analysis of electrode size optimization for capacitive microfabricated ultrasonic transducers.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2008

Same author

A new detection method for capacitive micromachined ultrasonic transducers.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2001

Same author

VLSI circuits for adaptive digital beamforming in ultrasound imaging.

IEEE transactions on medical imaging·1993

Search research articles

Related Experiment Video

Updated: Jul 7, 2026

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

A fast method of calculating diffraction loss between two facing transducers.

¹Bilkent Univ., Ankara.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

|January 1, 1988

Summary

This study introduces a rapid method to calculate ultrasonic transducer diffraction loss, crucial for optimizing acoustic lens design. The findings aid in minimizing energy loss for improved lens performance.

More Related Videos

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Published on: February 3, 2023

Related Experiment Videos

Last Updated: Jul 7, 2026

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

Published on: February 3, 2023

Area of Science:

Acoustics
Optics
Materials Science

Background:

Diffraction loss in ultrasonic transducers impacts acoustic lens efficiency.
Designing acoustic lenses requires understanding transducer interactions.
Previous methods were limited, especially for unequal transducer sizes.

Purpose of the Study:

To present a fast calculation method for diffraction loss between unequal circular ultrasonic transducers.
To provide design tools (graphs) for minimizing diffraction loss in acoustic lenses.
To extend the theory to anisotropic materials and pulsed excitation.

Main Methods:

Development of a novel analytical method for diffraction loss calculation.
Generation of amplitude and phase graphs for optimal transducer sizing.
Extension of the diffraction theory to anisotropic media and transient acoustic fields.

Main Results:

A computationally efficient method for determining diffraction loss between transducers of different sizes.
Graphical data enabling the design of acoustic lenses with minimized diffraction loss.
Validation of the method against existing data for equal-sized transducers.

Conclusions:

The presented method offers a significant advancement in calculating ultrasonic transducer diffraction loss.
The findings are directly applicable to the practical design of efficient acoustic lenses.
The extended theory provides a comprehensive approach for diverse material and excitation conditions.