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

Eddy Currents

Eddy Currents

Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...

You might also read

Related Articles

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

Sort by

Same author

Distributed Current Injection into a One-Dimensional Ballistic Edge Channel.

Physical review letters·2025

Same author

Nanoscale tip positioning with a multi-tip scanning tunneling microscope using topography images.

The Review of scientific instruments·2022

Same author

A millikelvin scanning tunneling microscope in ultra-high vacuum with adiabatic demagnetization refrigeration.

The Review of scientific instruments·2021

Same author

Room temperature in-situ measurement of the spin voltage of a BiSbTe<sub>3</sub> thin film.

Scientific reports·2020

Same author

In-situ four-tip STM investigation of the transition from 2D to 3D charge transport in SrTiO<sub>3</sub>.

Scientific reports·2019

Same author

Charge transport in GaAs nanowires: interplay between conductivity through the interior and surface conductivity.

Journal of physics. Condensed matter : an Institute of Physics journal·2018

Search research articles

Related Experiment Video

Updated: Jul 6, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

Metal bead crystals for easy heating by direct current.

Bert Voigtländer¹, Vasily Cherepanov, Christa Elsaesser

¹Institut für Bio- und Nanosysteme IBN-3 and Center of Nanoelectronic Systems for Information Technology (cni), Forschungszentrum Jülich, 52425 Jülich, Germany. b.voigtlaender@fz-juelich.de

The Review of Scientific Instruments

|April 2, 2008

Summary

This study introduces novel metal bead crystals for efficient surface cleaning of single crystals using direct current heating. This method eliminates the need for ion sputtering and offers versatile applications in surface science.

More Related Videos

An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions

An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions

Published on: June 18, 2020

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity

Published on: May 17, 2024

Related Experiment Videos

Last Updated: Jul 6, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions

An Externally-Heated Diamond Anvil Cell for Synthesis and Single-Crystal Elasticity Determination of Ice-VII at High Pressure-Temperature Conditions

Published on: June 18, 2020

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity

Solution-Processed, Surface-Engineered, Polycrystalline CdSe-SnSe Exhibiting Low Thermal Conductivity

Published on: May 17, 2024

Area of Science:

Materials Science
Surface Science
Nanotechnology

Background:

Conventional methods for cleaning metal single crystal surfaces, such as ion sputtering, can be time-consuming and may introduce artifacts.
Developing efficient and non-destructive surface preparation techniques is crucial for advanced surface science studies.

Purpose of the Study:

To describe the preparation of metal bead crystals with integrated electrical leads.
To demonstrate a novel, efficient method for cleaning metal single crystal surfaces using direct current heating.
To highlight the versatility of these bead crystals as substrates and for scanning tunneling microscopy (STM) tip maintenance.

Main Methods:

Fabrication of metal bead crystals with two attached wires.
Direct current heating of the bead crystals to achieve high temperatures.
Surface characterization using Auger spectroscopy and scanning tunneling microscopy (STM).

Main Results:

The direct current heating method effectively cleans metal surfaces (e.g., Pt, Au) without ion sputtering.
The prepared bead crystals are suitable for a wide range of metals and alloys (e.g., Cu, Mo, Pt, Au).
The bead crystals can be used to reshape STM tips, restoring atomic resolution imaging capabilities.

Conclusions:

Metal bead crystals offer a simple and efficient method for preparing clean metal single crystal surfaces.
These versatile substrates are valuable for various surface science applications.
The technique provides a practical solution for routine STM tip maintenance.