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

Impact Loading on a Cantilever Beam

Impact Loading on a Cantilever Beam

The analysis of a cantilever beam with a circular cross-section subjected to impact loading at its free end illustrates the conversion of potential energy from a dropped object into kinetic energy, which is then absorbed by the beam as strain energy. This process is crucial for understanding how materials behave under dynamic loads, which is important in fields such as construction and aerospace.
When an object is dropped onto the free end of a cantilever, its potential energy due to gravity is...

Beams with Symmetric Loadings

Beams with Symmetric Loadings

The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...

Unsymmetric Bending - Angle of Neutral Axis

Unsymmetric Bending - Angle of Neutral Axis

Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...

Beams with Unsymmetric Loadings

Beams with Unsymmetric Loadings

Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...

Design of Prismatic Beams for Bending

Design of Prismatic Beams for Bending

The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and...

Shearing Stresses in a Beam: Problem Solving

Shearing Stresses in a Beam: Problem Solving

A cantilever beam with a rectangular cross-section under distributed and point loads experiences shearing stresses. The analysis begins by identifying the loads acting on the beam. Then, the reactions at the beam's fixed end are calculated using equilibrium equations. The vertical reaction is a combination of the distributed and point loads, while the moment reaction is the sum of their moments. The shear force distribution along the beam, resulting from these loads, is established by...

You might also read

Related Articles

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

Sort by

Same author

Superior interfacial thermal conductance between <i>β</i>-Ga<sub>2</sub>O<sub>3</sub> and diamond realized through metal-assisted epitaxial strategy.

National science review·2026

Same author

Enhanced Anti-Counterfeiting Using Dynamic Encryption with Dual Physically Unclonable Functions.

ACS applied materials & interfaces·2026

Same author

A ppb-Level Chloroform Photoacoustic Gas Sensor Based on Omnidirectional Acoustic Sensing with a 3D Microphone Phased Array.

Analytical chemistry·2026

Same author

Continuous-wave watt-level diamond Raman laser at 1634 nm by intracavity pumping with dual Nd:YVO<sub>4</sub> crystals.

Optics letters·2026

Same author

Photoacoustic Multigas Sensor via CNN-Based Mode Division Multiplexing.

Analytical chemistry·2026

Same author

High-performance red light-emitting diodes from quasi-two-dimensional perovskite nanocrystals.

Nature communications·2026

Search research articles

Related Experiment Video

Updated: Jun 28, 2025

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Geometry optimization of cantilever-based optical microphones.

Shen Tian, Pengbo Chen, Mingqi Jiao

|April 15, 2024

Summary

This study introduces an optimized drumstick-shaped cantilever for fiber-optic microphones (FOMs), enhancing acoustic sensing performance. The new design achieves higher sensitivity and better bandwidth compared to traditional rectangular cantilevers.

More Related Videos

Three-dimensional Optical-resolution Photoacoustic Microscopy

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Published on: June 13, 2023

Related Experiment Videos

Last Updated: Jun 28, 2025

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Three-dimensional Optical-resolution Photoacoustic Microscopy

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Published on: June 13, 2023

Area of Science:

Acoustic Sensing
Optical Metrology
Micro-electro-mechanical Systems (MEMS)

Background:

Cantilever-based fiber-optic microphones (FOMs) are effective for acoustic sensing.
Improving FOMs is limited by size constraints, reflective area, and sensitivity-bandwidth trade-offs.

Purpose of the Study:

To present a geometry optimization framework for cantilever-based FOMs.
To address the limitations of minimal size, sufficient reflective area, and sensitivity-bandwidth trade-offs.

Main Methods:

Utilized a geometry optimization framework for cantilever design.
Employed drumstick-shaped cantilevers within a Fabry-Perot (F-P) interferometric structure.

Main Results:

Achieved a sensitivity of 302.8 mV/Pa at 1 kHz.
Demonstrated a minimum detectable acoustic pressure (MDP) of 2.35 µPa/√Hz.
Outperformed original rectangular cantilevers in sensitivity and MDP with identical dimensions.
Improved response bandwidth by mitigating resonance frequency reduction.

Conclusions:

The drumstick-shaped cantilever design significantly enhances FOM performance.
The geometry optimization framework offers design flexibility and scalability for high-performance acoustic sensing.