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Magnetic Force01:18

Magnetic Force

2.0K
In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...
2.0K
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

4.6K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
4.6K
Magnetic Force On A Current-Carrying Conductor01:25

Magnetic Force On A Current-Carrying Conductor

5.1K
Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a conductor carrying a current creates a magnetic field around it.
Consider a compass placed near a current-carrying wire. The wire experiences a force that aligns the needle of the compass tangentially around the wire. Thus, the current-carrying wire produces concentric circular loops of magnetic field. The magnetic field generated by a wire can be...
5.1K
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

2.2K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
2.2K
Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

4.2K
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process, commutators...
4.2K
Intermolecular Forces03:13

Intermolecular Forces

70.9K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
70.9K

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Related Experiment Video

Updated: Jan 31, 2026

A Microfluidic Device with Groove Patterns for Studying Cellular Behavior
13:50

A Microfluidic Device with Groove Patterns for Studying Cellular Behavior

Published on: August 30, 2007

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Magnetic Force-Based Microfluidic Techniques for Cellular and Tissue Bioengineering.

Sena Yaman1, Muge Anil-Inevi1, Engin Ozcivici1

  • 1Department of Bioengineering, Izmir Institute of Technology, Izmir, Turkey.

Frontiers in Bioengineering and Biotechnology
|January 9, 2019
PubMed
Summary

Magnetic cell manipulation, particularly with microfluidics, offers precise control for bioengineering. This review highlights its applications in cell separation, enrichment, and patterning, with future outlooks.

Keywords:
cell culturemagnetic manipulationsmicrofluidicsrare cell separationtissue engineering

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Area of Science:

  • Biotechnology
  • Bioengineering
  • Microfluidics

Background:

  • Live cell manipulation is crucial for cellular and tissue bioengineering.
  • Magnetic force-based methods offer advantages like minimal cell impact and environmental interference.
  • Integration with microfluidics enables precise spatiotemporal control of cellular factors.

Purpose of the Study:

  • To review recent applications of magnetic force-based cell manipulation in bioengineering.
  • To emphasize microfluidic-integrated systems for enhanced cell control.
  • To discuss current challenges and future directions in the field.

Main Methods:

  • Theoretical background of magnetic manipulation.
  • Description of magnetic force-based cell manipulation system components.
  • Review of diverse applications in cell separation, enrichment, and patterning.

Main Results:

  • Magnetic manipulation effectively separates cell fractions and enriches rare cells.
  • It guides cells into specific arrangements, mimicking natural tissue organization.
  • Microfluidic integration enhances precision and control in cell manipulation.

Conclusions:

  • Magnetic cell manipulation, especially within microfluidic devices, is a powerful tool for bioengineering.
  • Current limitations exist but future developments promise expanded applications.
  • The technology holds significant potential for advancing cellular and tissue engineering.