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

Types Of Superconductors

Types Of Superconductors

A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...

Magnetic Damping

Magnetic Damping

Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...

Superconductor

Superconductor

A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...

You might also read

Related Articles

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

Sort by

Same author

Efficacy and safety of aselective laser device to create centred capsulotomies in white intumescent cataracts: international multicentre study (LC-WIC study).

Journal of cataract and refractive surgery·2026

Same author

Comparative purity of trypan blue solutions: impurity profiles and their clinical implications.

Journal of cataract and refractive surgery·2025

Same author

Comment on: Comparison of two side-port incisions in phacoemulsification.

Journal of cataract and refractive surgery·2025

Same author

Comment on: Harold Ridley and the invention of the intraocular lens: a reappraisal.

Journal of cataract and refractive surgery·2025

Same author

Physicochemical characteristics of a microfiltered 0.4% trypan blue solution when applied to the anterior capsule.

Journal of cataract and refractive surgery·2025

Same author

Use of selective laser capsulotomy for mature white cataracts: Initial experience in Indian eyes.

Indian journal of ophthalmology·2024

Search research articles

Related Experiment Video

Updated: Jun 22, 2026

Scanning SQUID Study of Vortex Manipulation by Local Contact

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

dc superconducting quantum interference device based neodymium magnet displacement sensor for superfluid experiments.

Yuki Sato¹, Richard Packard

¹Department of Physics, University of California at Berkeley, Berkeley, California 94720, USA.

The Review of Scientific Instruments

|June 3, 2009

Summary

A novel displacement sensor utilizing a rare-earth magnet on a flexible diaphragm is presented for superfluid experiments. Its design, calibration, and performance characteristics are detailed.

More Related Videos

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

Related Experiment Videos

Last Updated: Jun 22, 2026

Scanning SQUID Study of Vortex Manipulation by Local Contact

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

High-Speed Magnetic Tweezers for Nanomechanical Measurements on Force-Sensitive Elements

Published on: May 12, 2023

Area of Science:

Physics
Materials Science

Background:

Superfluid experiments require precise measurement of small displacements.
Existing sensors may have limitations in sensitivity or compatibility with cryogenic environments.

Purpose of the Study:

To demonstrate a new type of displacement sensor for superfluid research.
To detail the sensor's construction, calibration, and performance.

Main Methods:

A sensor was constructed with a rare-earth magnet attached to a flexible diaphragm.
The sensor's response was calibrated under controlled conditions.
Performance was evaluated in the context of superfluid experiments.

Main Results:

The sensor successfully measured displacements relevant to superfluid phenomena.
Calibration data provided a quantitative relationship between displacement and sensor output.
The sensor demonstrated adequate performance for its intended application.

Conclusions:

The developed rare-earth magnet displacement sensor is a viable tool for superfluid experiments.
The sensor offers a promising approach for precise displacement measurements in challenging environments.