Related Experiment Videos
Micro magnetic tweezers for nanomanipulation inside live cells
Anthony H B de Vries1, Bea E Krenn, Roel van Driel
1Biophysical Engineering, Faculty of Science and Technology, Institute for Biomedical Technology, University of Twente, 7500 AE Enschede, The Netherlands.
Biophysical Journal
|November 24, 2004
Summary
This study introduces novel multi-pole magnetic tweezers capable of applying high, controllable forces to magnetic probes within living cells. This breakthrough allows precise manipulation of nanoscale objects for advanced cellular research.
Area of Science:
- Biophysics
- Nanotechnology
- Cell Biology
Background:
- Existing magnetic tweezers offer either high forces in one direction or low forces in multiple directions.
- A need exists for a versatile magnetic tweezers system for intracellular manipulation.
Purpose of the Study:
- To design and characterize a novel multi-pole magnetic tweezers system.
- To enable high-force, multi-directional manipulation of magnetic probes inside living cells.
Main Methods:
- Fabrication of micron-scale magnetic structures using cleanroom technologies.
- Characterization of magnetic flux gradients and force exertion capabilities.
- Demonstration of probe maneuverability within the cytoplasm of living cells.
Main Results:
- Achieved magnetic flux gradients of 8 x 10^3 T m^-1.
- Exerted forces up to 12 pN on 350 nm paramagnetic probes.
- Successfully maneuvered probes through the cytoplasm of living cells.
Conclusions:
- The developed multi-pole magnetic tweezers successfully combine high force and directional control.
- This technology enables precise manipulation of nanoscale objects within living cells.
- Future applications may include exerting picoNewton forces on 100 nm beads.