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10. August 2017

Flexible write head stores data directly on components

IMPT | Researchers of the Institute of Micro Production Technology (IMPT) developed a magnetic data storage, enabling information to be stored directly on the surface of non-magnetic components.

Modern Industry 4.0-compliant data networking requires the presence of distributed data storage units. The most crucial factors are their reliability and re-writability. Current data storage technologies suit these needs to only a limited extent. 
In this respect, IMPT developed a novel magnetic storage technology. The flexible write head remains operable, even if exposed to vibrations or dust particles. In contrast to conventional write heads, the novel one has a flexible magnetic core which is more robust against mechanical influences.
The coercivity enhances the stability of the stored data considerably. To develop an easily writable storage medium with high coercivity, the researchers used the effect of heat-assisted magnetic recording (HAMR). By using a laser beam heating the storage medium locally, the flexible write head achieves a storage density of up to 98 kbit per square centimetre.

by Piriya Taptimthong

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Benefits derived from research results

  • Data storage directly on the surface of a component
  • Re-writable data storage medium instead of labels or RFID tags
  • Data is intrinsically stored on the component
  • High data storage density
IMPT_Flexibler-Schreibkopf_Bild1_01
Flexible write head for magnetic recording on hard magnetic materials. The flexible core has trapezoidal poles, focusing the head’s write field. (Photo: Piriya Taptimthong, IMPT)
IMPT_Flexibler-Schreibkopf_Bild2_01
Flexible write head with integrated HAMR module. The laser beam is emitted by the laser module (green) and is focused and positioned by means of opto-mechanic systems. (Photo: Piriya Taptimthong, IMPT)
IMPT_Flexibler-Schreibkopf_Bild3_01
Data tracks written by the flexible write head. Heat-assisted magnetic recording (HAMR) achieves much higher data storage densities. (Photo: Piriya Taptimthong, IMPT)

Contact

Piriya Taptimthong, M. Sc. M. Eng.

+49 (0) 511 762-18165
taptimthong@impt.uni-hannover.de

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