NanoAndMore presents NANOSENSORS new highly conductive and wear resistant Platinum Silicide AFM Probes




Platinum silicide probes: highly conductive AFM probes with small radii and high wear resistance

Conductive diamond

Conductive Diamond

Conductive diamond probes. Advantages: hard, long-lasting coating. Disadvantages: large radius, low conductivity

The best of both worlds

Platinum silicide probes

Platinum silicide probes

Advantages: small radius, excellent conductivity, good wear-out behavior

Platinum coated probes

Platinum coated probes

Platinum(Iridium) coated probes. Advantages: relatively small radius, excellent conductivity. Disadvantages: fast wear-out

Extremely durable: C-AFM comparison of PtSi and Pt probes

Platinum silicide probes

Cross sections of current images of (a) a commercial Pt probe (Pt, left image) and (b) a PtSi probe (PtSi, right image).
TUNA mode, DI Icon, sample bias -0.25V, force 1μN, total tip travel distance 13mm. For each tip a cross section out of the first
and the last scan is shown.

Silicide tip advantages

  • Formation of a hard and massive conductive tip apex instead of only a few ten nanometer deposited metal coating at the tip apex
  • Smaller radius than PtIr coated probes. About 5 to 6 times smaller than diamond coated tips
  • Metal (PtIr) like conductivity. About 10 times better conductivity than conductive diamond
  • Dramatically reduced wear rates compared to silicon and PtIr coated tips

Product list

  Type Application Force Constant
[N/m] (nominal)
Res. Frequency
[kHz] (nominal)
Coating (backside)
Non-Contact PtSi-NCH C-AFM, TUNA 42 330 PtSi
(PtSi reflective)
2.8 75 PtSi
(PtSi reflective)
Contact PtSi-CONT 0.2 C-AFM, TUNA,
0.2 13 PtSi
(PtSi reflective)

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Tags: AFM, SPM-week


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