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Eddy Currents01:25

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.
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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Published on: August 17, 2017

Applications of microelectromagnetic traps.

Joseph R Basore1, Lane A Baker

  • 1Department of Chemistry, Indiana University, Bloomington, IN 47405, USA.

Analytical and Bioanalytical Chemistry
|May 8, 2012
PubMed
Summary
This summary is machine-generated.

Microelectromagnetic traps (METs) manipulate magnetic fields for diverse applications. Recent advancements utilize MET geometry and fields for biosensing, DNA manipulation, and ion current control.

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Area of Science:

  • Physics
  • Engineering
  • Biotechnology

Background:

  • Microelectromagnetic traps (METs) have been utilized for nearly 20 years for magnetic field manipulation.
  • Various trap geometries yield distinct magnetic fields and gradients.
  • Initially, METs focused on small-scale magnetic material separation and concentration.

Purpose of the Study:

  • To review recent advancements in microelectromagnetic trap (MET) applications.
  • To highlight how MET geometry, current density, and external fields are leveraged.
  • To describe emerging uses of METs in sensors, DNA manipulation, and ion current blocking.

Main Methods:

  • Review of recent scientific literature on microelectromagnetic traps.
  • Analysis of studies employing specific MET geometries, current densities, and external fields.
  • Categorization of applications based on MET manipulation techniques.

Main Results:

  • METs are increasingly used beyond basic material separation.
  • Novel applications include filterless bioseparations, inductive heating, and biological detection.
  • Recent reports demonstrate METs in developing advanced sensors, manipulating DNA, and controlling ion currents.

Conclusions:

  • Microelectromagnetic traps offer versatile platforms for advanced scientific and technological applications.
  • Tailoring MET geometry and operational parameters unlocks new functionalities.
  • METs are poised for significant impact in fields ranging from biotechnology to materials science.