(a) SEM images of a NeedleProbe with simple cylindrical geometry. (b) Schematic o the AFM experimental setup for liquid probing using NeedleProbe. (c) Top: schematic of the meniscus formation between the NeedleProbe and the liquid surface. Bottom: Typical force vs. distance (F-D) curve of the NeedleProbe on a liquid surface. The red line is extension and the blue line is the retraction force curve.
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NN-HAR-CM13 |
| Nanoneedle specification | ||||||
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| Technical Data | Typical | Range | ||||
| Needle Material | Ag2Ga |
NA |
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| Needle Length | 1-3 μm |
3-7 μm |
7-13 μm |
NA |
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| Tip radius of curvature | 50 nm |
20 -100 nm |
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| Needle Angle | 12° |
7°-15° |
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| Needles Electrical Resistivity | 1.05×10-7 Ωm |
1 - 1.1 ×10-7 Ωm |
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| Electrical resistance of tip and AFM cantilever | 1-3 μm |
3-7 μm |
7-13 μm |
1-3 μm |
3-7 μm |
7-13 μm |
30 Ω |
65 Ω |
100 Ω |
15-45 Ω |
50-80 Ω |
80-120 Ω |
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| AFM Cantilever Specifications | ||
|---|---|---|
| Technical Data | Typical | Range |
| Force Constant | 0.2 N/m | 0.07 - 0.4 N/m |
| Resonance Freq. | 13 kHz | 9 - 17 kHz |
| Cantilever Length | 450 μm | 440 - 460 μm |
| Cantilever Mean Width | 50 μm | 45 - 55 μm |
| Cantilever Thickness | 2.0 μm | 1.0 - 3.0 μm |
| Cantilever Shape Cross-section | Beam | |
| Number of Cantilevers | 1 per chip | |
| Tip Height | 17 μm ( not including needle ) | |
| Tip Offset | 15 - 25 μm | |
| Needle Material | Ag2Ga | |
| Cantilever and Chip Material | Single Crystal Silicon | |
| Chip Size (industry standard) | 3400 μm (L) x 1600 μm (W) x 300 μm (T) | |
| Coating | Gold reflex (on both side) | |
* NanoNeedle longer than 10 μm will be provided by special order (Max 100μm)
* Different coating materials are available
For more information please contact us at info@nauganeedles.com
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SEM movie of an Ultra High Aspect Ratio NeedleProbe (HAR-NP) during AFM scanning Selective self-assembly at room temperature of individual freestanding
Ag2Ga alloy nanoneedles
X-ray-diffraction pattern from needles grown on a thin film of Ag.Inset(SAD) selected area diffraction pattern from a single needle that shows that single needles are highly crystalline. |
Free-Standing Biomimetic Polymer Membrane Imaged with
Atomic Force Microscopy
(a) SEM images of a NeedleProbe with simple cylindrical geometry. (b) Schematic o the AFM experimental setup for liquid probing using NeedleProbe. (c) Top: schematic of the meniscus formation between the NeedleProbe and the liquid surface. Bottom: Typical force vs. distance (F-D) curve of the NeedleProbe on a liquid surface. The red line is extension and the blue line is the retraction force curve. Enhanced EFM subsurface imaging of 0.5% SWCNT (LA)–polyimide nanocomposite film using an HAR probe. EFM bias voltage and lift height is 12 V and 50 nm, respectively. (a) SEM image of a conventional probe, (b) SEM image of an HAR probe. Inset: enlarged image of circled area near tip apex. (c) and (d) EFM phase image of subsurface CNTs using a conventional and HAR probe, respectively. (e) and (f) Cross-section analysis of segmented line at (c) and (d), respectively. EFM phase scale 20◦. The EFM phase signal at circled peak in (f) is both stronger and sharper than that in (e). |
