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  4. Fully tungsten and platinum nanoprobes for electrically conducting scanning probe methods
 
conference presentation

Fully tungsten and platinum nanoprobes for electrically conducting scanning probe methods

Steen, J  
•
Harada, T
•
Ishii, M
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2005
The 4th IIS / KIMM / EPFL Joint Symposium on Micro/Nano Science and Technology, Seiken Symposium No. 41

Recently electrically conducting SPM probes were used as read/write sensor of magneto-resistive nanopillars and ferroelectric domains in the development of >1 Tb/inch2 data storage. Since metal coated (platinum (Pt) or Pt/iridium) silicon (Si) probes are not suitable at high current densities, probes with an entire metallic tip form a solution. We present the fabrication and characterisation of hybrid SPM probes with fully metallic cantilever and tip. One method is based on a backside opening etch in KOH solution. The other method uses a dry under-etch probe release. Fully metallic cantilevers with integrated tips of tungsten (W) and Pt have been fabricated. The body of the probes consists of the photopolymer SU-8. A tip sharpness controlling method is presented.

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