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

Thermometers and Temperature Scales

Thermometers and Temperature Scales

Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...

Le Chatelier's Principle: Changing Temperature

Le Chatelier's Principle: Changing Temperature

Consistent with the law of mass action, an equilibrium stressed by a change in concentration will shift to re-establish equilibrium without any change in the value of the equilibrium constant, K. When an equilibrium shifts in response to a temperature change, however, it is re-established with a different relative composition that exhibits a different value for the equilibrium constant.
To understand this phenomenon, consider the elementary reaction:

Principle of Linear Impulse and Momentum for a System of Particles

Principle of Linear Impulse and Momentum for a System of Particles

In the context of a system of particles moving relative to an inertial frame of reference, the equation of motion is a crucial tool for understanding the dynamics of the system. This equation, which accounts for external forces acting on each particle, plays a fundamental role in describing the system's behavior.
Notably, internal forces between particles, occurring in equal and opposite collinear pairs, cancel out and are not part of the equation of motion. This exclusion simplifies the...

Principle of Linear Impulse and Momentum for a Single Particle

Principle of Linear Impulse and Momentum for a Single Particle

Linear momentum is a fundamental concept in physics that describes the motion of an object. It is a vector quantity, having a magnitude equal to the product of its mass and its velocity, and direction along the object's velocity. On the other hand, linear impulse, also known as momentum impulse, is a concept in physics related to the change in the linear momentum of an object. Impulse is a vector quantity defined as the product of force and the time over which the force is applied.
Delving...

Principle of Linear Impulse and Momentum for a Single Particle: Problem Solving

Principle of Linear Impulse and Momentum for a Single Particle: Problem Solving

Consider a wooden box and a cylinder of known masses m1 and m2, respectively, hanging from a ceiling with the help of a massless pulley system.

The Uncertainty Principle

The Uncertainty Principle

Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...

You might also read

Related Articles

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

Sort by

Same author

Symmetric gradient-index media reconstruction.

Optics express·2023

Same author

Effect of graphite oxide electrochemically exfoliated over a multimode interference filter.

Applied optics·2023

Same author

Optical fiber pH sensor based on a multimode interference device with polymer overlay.

Applied optics·2023

Same author

Experimental evolution of the temporal and spectral profiles of noise-like pulses within the mode-locked regions of a figure-eight fiber laser.

Applied optics·2020

Same author

Generation, characterization, and experimental analysis of noise-like pulse envelopes with complex shapes.

Applied optics·2020

Same author

Suspended LRSPP for the development of highly integrated active plasmonic devices.

Optics express·2019

Search research articles

Related Experiment Video

Updated: Jan 24, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

Linear multimode interference fiber temperature sensor using the liquid in glass thermometer principle.

D A May-Arrioja, V I Ruiz-Perez, D Lopez-Cortes

|June 4, 2019

Summary

This summary is machine-generated.

This study presents a novel temperature sensor using multimode interference. The sensor leverages ethylene glycol

More Related Videos

Mouse Body Temperature Measurement Using Infrared Thermometer During Passive Systemic Anaphylaxis and Food Allergy Evaluation

Mouse Body Temperature Measurement Using Infrared Thermometer During Passive Systemic Anaphylaxis and Food Allergy Evaluation

Published on: September 14, 2018

Fabrication and Testing of Photonic Thermometers

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

Related Experiment Videos

Last Updated: Jan 24, 2026

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

Mouse Body Temperature Measurement Using Infrared Thermometer During Passive Systemic Anaphylaxis and Food Allergy Evaluation

Mouse Body Temperature Measurement Using Infrared Thermometer During Passive Systemic Anaphylaxis and Food Allergy Evaluation

Published on: September 14, 2018

Fabrication and Testing of Photonic Thermometers

Fabrication and Testing of Photonic Thermometers

Published on: October 24, 2018

Area of Science:

Optical Sensing
Thermometry
Fiber Optics

Background:

Accurate temperature measurement is crucial across various scientific and industrial applications.
Existing temperature sensors may have limitations in range, sensitivity, or adaptability.
Optical fiber-based sensors offer potential advantages in remote and harsh environment sensing.

Purpose of the Study:

To design and fabricate a novel temperature sensor utilizing multimode interference (MMI) principles.
To investigate the sensor's performance, including sensitivity, linearity, and temperature range adjustability.
To demonstrate the sensor's capability for measuring both positive and negative temperatures.

Main Methods:

Fabrication of a temperature sensor comprising a glass bulb, capillary, ethylene glycol, and a no-core fiber (NCF).
The sensor operates based on the thermal expansion of ethylene glycol, which covers the NCF.
Monitoring the peak wavelength shift in the NCF, correlated to temperature variations.

Main Results:

Achieved a high sensitivity of 0.4447 nm/°C.
Demonstrated a highly linear response with an R² value of 0.99962.
Confirmed that the sensing temperature range can be adjusted by altering capillary diameter or bulb volume.

Conclusions:

The developed multimode interference thermometer exhibits excellent performance characteristics for temperature sensing.
The sensor's design allows for tunable temperature ranges and the measurement of negative temperatures.
This versatile optical fiber sensor holds promise for diverse applications requiring accurate temperature monitoring.