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

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...
Sum and Difference OpAmps01:22

Sum and Difference OpAmps

Operational amplifiers (op-amps) are versatile devices that extend beyond amplification. In this context, two specific op-amp configurations are explored: the summing and difference amplifiers.
A summing amplifier, or an adder, utilizes an op-amp to merge multiple input signals into a single output signal. When audio signals are introduced into its input channels, the input resistors initiate currents that traverse feedback resistors, resulting in an output voltage. Applying Kirchhoff's current...
Instrumentation Amplifier01:25

Instrumentation Amplifier

An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
Differential Leveling01:12

Differential Leveling

Differential leveling is a precise method in surveying used to determine the elevation difference between two points. Its primary goal is to establish accurate vertical measurements to create level surfaces or grade lines critical for designing and constructing infrastructures such as roads, bridges, and buildings.The procedure for differential leveling begins with setting up and leveling the instrument at a point where the benchmark can be seen. The level rod is held on the benchmark (BM), and...
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single stretching vibration...
Integrator and Differentiator01:13

Integrator and Differentiator

Op-amp circuits have significant applications in various fields, including automotive engineering. One such application is cruise control systems in cars, where op-amp circuits are integral for maintaining a constant speed. In these systems, op-amps function as both integrators and differentiators.
An integrator within an op-amp circuit produces an output directly proportional to the integral of the input signal. This is achieved by replacing the feedback resistor in a typical inverting...

You might also read

Related Articles

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

Sort by
Same author

Flash phase error correction of phase shifters in the optical phased array.

Applied optics·2026
Same author

Multi-Sensor Laser System for Electric Guitar Pitch-Detection.

Sensors (Basel, Switzerland)·2024
Same author

Self-Mixing Laser Distance-Sensor Enhanced by Multiple Modulation Waveforms.

Sensors (Basel, Switzerland)·2022
Same author

Transforming a green laser pointer in a self-mixing interferometer capable of submicrometer vibration sensing.

Applied optics·2021
Same author

Native signal self-mix interferometer has less than 1 nm noise equivalent displacement.

Optics letters·2021
Same author

Remote Reflectivity Sensor for Industrial Applications.

Sensors (Basel, Switzerland)·2021

Related Experiment Video

Updated: Jul 19, 2026

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

Self-mixing differential vibrometer based on electronic channel subtraction.

Silvano Donati1, Michele Norgia, Guido Giuliani

  • 1Dipartimento di Elettronica, Universitá di Pavia, Italy. silvano.donati@unipv.it

Applied Optics
|September 20, 2006
PubMed
Summary

A new instrument non-contact measures differential vibrations using a self-mixing interferometer. This method accurately detects micro-slip and gross-slip friction behaviors in materials.

More Related Videos

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
05:11

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
09:36

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

Related Experiment Videos

Last Updated: Jul 19, 2026

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
05:11

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements
09:36

Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

Published on: June 25, 2021

Area of Science:

  • Optical Engineering
  • Vibration Measurement
  • Tribology

Background:

  • Self-mixing interferometers offer noncontact vibration measurement capabilities.
  • Traditional methods often require a reference arm, limiting configurations.
  • Understanding friction-induced vibrations is crucial for mechanical systems.

Purpose of the Study:

  • To develop an instrument for noncontact measurement of differential vibrations.
  • To adapt self-mixing interferometry for differential measurements without a reference arm.
  • To investigate friction hysteresis cycles in contacting materials.

Main Methods:

  • Utilized a self-mixing interferometer configuration.
  • Employed electronic subtraction of signals from two servo-stabilized vibrometer channels.
  • Validated the effectiveness of electronic subtraction against field superposition.

Main Results:

  • Achieved common-mode suppression of 25-30 dB.
  • Demonstrated a dynamic range exceeding 100 micrometers.
  • Measured minimum differential amplitudes as low as 20 nm within a 10 kHz bandwidth.

Conclusions:

  • The developed instrument effectively measures differential vibrations noncontact.
  • Electronic subtraction is a viable method for differential measurements in self-mixing interferometry.
  • The instrument's application revealed hysteresis cycles in microslip and gross-slip regimes, relevant to gas turbine blade damping.