Abstract
Recently, affinity magnetic beads have been widely used in immunomagnetic cell sorting (IMCS) technology. Today, we can easily sort and analyze DNA and antibodies (immunoglob- ulin) using various types of affinity magnetic beads available in the market. The diameters of these affinity magnetic beads used in immunomagnetic cell sorting are limited to above approximately 1 /xm because of the low magnetic fields induced by permanent magnets. Now, nano-sized affinity magnetic beads are strongly desired to achieve high resolutions. We have been studying and attempting to develop a high-gradient magnetic separation (HGMS) system that employs a superconducting magnet to induce a considerably higher magnetic field than that induced by a permanent magnet in order to trap smaller nano-sized affinity magnetic beads by a filter made of fine stainless steel wool. In this study, we constructed a prototype of a desktop-type HGMS system using a cryocooler-cooled LTS magnet and conducted preliminary experiments on trapping the nano-sized magnetic particles. Furthermore, we investigated the magnetic field distribution and magnetic force around a magnetic wire in the filter by means of a numerical simulation.
| Original language | English |
|---|---|
| Article number | 5109581 |
| Pages (from-to) | 2157-2161 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 19 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Jun 2009 |
| Externally published | Yes |
Keywords
- High-gradient magnetic separation
- Immunomagnetic cell sorting
- Nano-sized magnetic particles
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering