Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Photoelectric Effect02:26

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...

You might also read

Related Articles

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

Sort by
Same author

Post-Release Metallization in MEMS Silicon-to-Silicon Contact Switches for On-Resistance Improvement.

Micromachines·2026
Same author

Design, Fabrication and Characterization of Multi-Frequency MEMS Transducer for Photoacoustic Imaging.

Micromachines·2026
Same author

Push-Push Electrothermal MEMS Actuators with Si-to-Si Contact for DC Power Switching Applications.

Micromachines·2025
Same author

Design and Fabrication of Multi-Frequency and Low-Quality-Factor Capacitive Micromachined Ultrasonic Transducers.

Micromachines·2025
Same author

Laterally Actuated Si-to-Si DC MEMS Switch for Power Switching Applications.

Micromachines·2024
Same author

An Adaptive RF Front-End Architecture for Multi-Band SDR in Avionics.

Sensors (Basel, Switzerland)·2024

Related Experiment Video

Updated: Jun 28, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

17.8K

Cost-Effective Photoacoustic Imaging Using High-Power Light-Emitting Diodes Driven by an Avalanche Oscillator.

Alberto Prud'homme1, Frederic Nabki1

  • 1Department of Electrical Engineering, École de Technologie Supérieure, Montreal, QC H3C 1K3, Canada.

Sensors (Basel, Switzerland)
|April 28, 2025
PubMed
Summary

This study explores using light-emitting diodes (LEDs) driven by an avalanche oscillator for photoacoustic imaging (PAI). The cost-effective LED system successfully generated photoacoustic signals, showing promise for portable medical imaging.

Keywords:
acoustic wave propagationavalanche oscillatorphotoacoustic effectphotoacoustic imaging (PAI)portable imaging systemsultrasonic sensors

More Related Videos

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts
10:33

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts

Published on: March 8, 2017

8.2K
A High-performance Compact Photoacoustic Tomography System for In Vivo Small-animal Brain Imaging
05:32

A High-performance Compact Photoacoustic Tomography System for In Vivo Small-animal Brain Imaging

Published on: June 21, 2017

10.4K

Related Experiment Videos

Last Updated: Jun 28, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

17.8K
Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts
10:33

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts

Published on: March 8, 2017

8.2K
A High-performance Compact Photoacoustic Tomography System for In Vivo Small-animal Brain Imaging
05:32

A High-performance Compact Photoacoustic Tomography System for In Vivo Small-animal Brain Imaging

Published on: June 21, 2017

10.4K

Area of Science:

  • Biomedical Engineering
  • Optical Imaging
  • Acoustic Physics

Background:

  • Photoacoustic imaging (PAI) combines optical and ultrasound for high-resolution biological tissue analysis.
  • Traditional PAI relies on costly and complex lasers as light sources.
  • Interest is growing in alternative, more accessible light sources for PAI.

Purpose of the Study:

  • To evaluate the feasibility of using high-power light-emitting diodes (LEDs) for photoacoustic imaging.
  • To assess an avalanche oscillator as a driver for LEDs in a PAI system.
  • To explore the potential of cost-effective and portable PAI technologies.

Main Methods:

  • Developed a PAI system using an avalanche oscillator to drive high-power LEDs.
  • Integrated an LED array, ultrasonic transducer, and amplifier for signal detection.
  • Tested the system's ability to generate photoacoustic signals in air and water.

Main Results:

  • Successfully generated short, high-intensity light pulses from LEDs.
  • Achieved detectable photoacoustic signals in both air and water environments.
  • Demonstrated the cost-effectiveness and portability advantages of LED-based PAI.

Conclusions:

  • LED-based photoacoustic systems are feasible and promising for affordable imaging.
  • Challenges include lower power and broader spectral bandwidth compared to lasers.
  • This approach offers a viable direction for developing portable and accessible PAI devices.