Desk-top magnetic susceptometer for rapid room temperature measurements

Desk-top magnetic susceptometer for rapid room temperature measurements

Our patented desk top suscepotometer is a rapid yet highly sensitive instrument for measuring the magnetic properties of nanoparticles, and is especially useful in biodiagnostics. Ability to carry out quick (in a time scale seconds) measurement of room temperature magnetic susceptibility components, i.e. change in the real and imaginary part of the magnetization at low external fields and as a function of frequency, is of importance for many applications.

Description

Two long standing demands for applications of magnetic nanoparticles in medical applications have been a challenge:

  1. Routinely reproducible reliable batch of nanomagnetic particles with a narrow size distribution
  2. ability to measure and determine the characteristics of even very low concentrations, in the ppm regime, of the magnetic content in suspensions

Our team has recently established capabilities for determining both of them.

We are looking for active research groups who may wish to exploit our capabilities to produce magnetic particles and also characterize them for various biological applications: therapy as well as diagnostics. We would even be interested in designing new instrumentation for specific applications in interdisciplinary projects with people from bioscientific research groups.

Infrastructure/Methods

The main applications of the susceptometer are:

  • Magnetic characterization of liquid samples or particles in suspensions in a few seconds.
  • Frequency dependence determination to study the consequences of encapsulated particles.
  • Magnetic field strength dependence determination.

The desktop susceptometer is simple and quick; a measurement only takes a few seconds. It has very high sensitivity and yields both in- and out-of-phase susceptibility. It covers a wide frequency range, from a few Hz to tens of kHz and does not require low temperature or cryogen. The access to the measuring zone is easy, which is a simple 6mm diameter bore.

An instrument for measuring the surface spreading of magnetic particles is also under development.

Practical information

We are looking for researchers interested in exploiting our capabilities to produce magnetic particles and also to characterize them for various biological applications.

We are also interested in designing new instrumentation for specific applications in interdisciplinary projects.

For more information, please download the Desktop_susceptometer.pdf or contact us.

Interested in Industry collaboration
Brinellvägen 23
Materials Science and Engineering, KTH
100 44 Stockholm
+46 (0)8 790 83 91