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 Type: NCLPt |
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Non-contact / Tapping™ mode - Long Cantilever - PtIr5 coating |
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NanoWorld Pointprobe® NCL probes are designed for non-contact or tapping™ mode imaging and offer an alternative to our high frequency non-contact type NCH. The NCL type is recommended if the feedback loop of the microscope does not accept high frequencies or if the detection system needs a minimum cantilever length (> 125 µm). This probe combines high operation stability with outstanding sensitivity. Compared to the high frequency non-contact type NCH the maximum scanning speed is slightly reduced.
All probes of the Pointprobe® series are made from monolithic silicon which is highly doped to dissipate static charge. They are chemically inert and offer a high mechanical Q-factor for high sensitivity. The tip is shaped like a polygon based pyramid with a height of 10-15 µm.
The platinum iridium5 (PtIr5) coating on both sides of the probe allows electrical contacts between tip and sample (high conductivity) while enhancing the reflectivity of the cantilever. The typical tip radius of curvature is less than 25 nm. |
| Technical Data | Value | Range* |  |
| Thickness | 7 µm | 6.5 - 7.5 | |
| Mean Width | 38 µm | 33 - 43 | |
| Length | 225 µm | 220 - 230 | |
| Force Constant | 48 N/m | 31 - 71 | |
| Resonance Frequency | 190 kHz | 160 - 210 | |
| Order Code | Quantity | Data Sheet | |
| NCLPt-10 | 10 | yes | |
| NCLPt-20 | 20 | yes | |
| NCLPt-50 | 50 | no | |
| NCLPt-W | 380 | yes | |
* Typical values |
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| PtIr5 Coating |
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| PtIr5 coating is an approximately 23 nm thick double layer of chromium and platinum iridium5 on both sides of the cantilever. The tip side coating enhances the conductivity of the tip and allows electrical contacts. The detector side coating enhances the reflectivity of the laser beam by a factor of 2 and prevents light from interfering within the cantilever. The coating process is optimised for stress compensation and wear resistance. The bending of the cantilever due to stress is less than 2°. Wear at the tip can occur if operating in contact-, friction- or force modulation mode. |
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For applications allowing higher resonance frequencies or a shorter cantilever length we recommend our Pointprobe® type NCHPt. For more information contact: info@nanoworld.com | |
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POINTPROBE® is a registered trademark of NANOWORLD AG TappingMode™ is a trademark of Digital Instruments Inc. GelPak® is a registered trademark of Vichem Corporation All data are subject to change without notice. |
NanoWorld AG Rue Jaquet-Droz 1 Case Postale 216 CH-2002 Neuchâtel Switzerland www.nanoworld.com |