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

Mesh Analysis for AC Circuits

Mesh Analysis for AC Circuits

In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...

Bus Impedance Matrix

Bus Impedance Matrix

Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...

Transformers with Off-Nominal Turns Ratios

Transformers with Off-Nominal Turns Ratios

In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the rated...

Series Impedances: Three-Phase Line

Series Impedances: Three-Phase Line

Calculating series impedances for a three-phase overhead line involves evaluating resistances and inductive reactances in a network with three-phase and multiple neutral conductors grounded at regular intervals.
Using Kirchhoff's laws, an integro-differential equation for the network is derived. This equation accounts for unbalanced phase currents, which may induce return currents through neutral wires and the earth, seeking the least impedance path. Earth return conductors can replace the...

Multimachine Stability

Multimachine Stability

Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:

Impedance Combination

Impedance Combination

Consider a string of christmas lights, each bulb symbolizing an impedance element. In this series configuration, the flow of electric current remains uniform across every component. This behavior aligns with Kirchhoff's Voltage Law (KVL), which asserts that the total impedance in such a setup equals the sum of individual impedances—akin to resistors in series. It follows that the voltage from the power source is distributed proportionally among these components, adhering to the voltage division...

You might also read

Related Articles

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

Sort by

Same author

Applications of Capacitive Micromachined Ultrasonic Transducers: A Comprehensive Review.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2021

Same author

Miniaturized ultrasound imaging probes enabled by CMUT arrays with integrated frontend electronic circuits.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2010

Same author

High-frequency acousto-optic mode locker for picosecond pulse generation.

Optics letters·2009

Same author

Detachable 400-MHz acousto-optic phase modulator for a single-mode optical fiber.

Optics letters·2009

Same author

Tunable optical filter in fiber-optic form.

Optics letters·2009

Same author

Switchable fiber-optic tap using the acousto-optic Bragg interaction.

Optics letters·2009

Search research articles

Related Experiment Video

Updated: May 30, 2026

Finite Element Modelling of a Cellular Electric Microenvironment

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

Modeling and Measuring the Effects of Mutual Impedance on Multi-Cell CMUT Configurations.

K K Park¹, M Kupnik, H J Lee

¹Edward L. Ginzton Laboratory, Stanford University, CA, U.S.A.

Proceedings. IEEE Ultrasonics Symposium

|August 9, 2011

Summary

This study introduces a new numerical method to accurately model multi-cell capacitive micromachined ultrasonic transducers (CMUTs). The method accounts for cell-to-cell acoustic loading, predicting varied frequency responses and offering faster computation than finite element analysis.

More Related Videos

Electric Cell-substrate Impedance Sensing for the Quantification of Endothelial Proliferation, Barrier Function, and Motility

Electric Cell-substrate Impedance Sensing for the Quantification of Endothelial Proliferation, Barrier Function, and Motility

Published on: March 28, 2014

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion

Published on: April 2, 2020

Related Experiment Videos

Last Updated: May 30, 2026

Finite Element Modelling of a Cellular Electric Microenvironment

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

Electric Cell-substrate Impedance Sensing for the Quantification of Endothelial Proliferation, Barrier Function, and Motility

Electric Cell-substrate Impedance Sensing for the Quantification of Endothelial Proliferation, Barrier Function, and Motility

Published on: March 28, 2014

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion

Impedance-based Real-time Measurement of Cancer Cell Migration and Invasion

Published on: April 2, 2020

Area of Science:

Acoustics
Microelectromechanical Systems (MEMS)
Ultrasonics

Background:

Multi-cell configurations are common in Capacitive Micromachined Ultrasonic Transducers (CMUTs).
Accurate modeling of multi-cell CMUTs requires considering acoustic loading from neighboring cells.
Existing models may oversimplify by only considering single-cell acoustic impedance.

Purpose of the Study:

To develop and present a novel numerical method for calculating the frequency response of multi-cell CMUTs.
To incorporate mutual acoustic impedance effects for a more accurate CMUT model.
To enable optimization of CMUT cell configurations for various applications.

Main Methods:

A numerical method was developed to calculate the frequency response of CMUTs with multiple cells.
The method simultaneously calculates the velocity of each cell, accounting for mutual acoustic impedance.
Experimental validation was performed using a laser interferometer to measure CMUT displacement response in vegetable oil.

Main Results:

The numerical model predicts distinct frequency responses for cells based on their position within the CMUT element.
Experimental measurements closely matched the numerical predictions.
The proposed method demonstrated significantly reduced computation time compared to finite element-based calculations.

Conclusions:

The developed numerical method accurately models multi-cell CMUTs by including mutual acoustic impedance.
The model's efficiency and accuracy make it suitable for optimizing CMUT designs.
This approach can advance CMUT applications in areas like medical imaging and therapy.