HA_NC/CL

Colloidal probes with micron spheres of various materials attached to HA_NC tipless cantilevers.
AFM cantilevers of Etalon series have well-defined resonance of the bulk and stiffness constant due to the features of their production process. Attaching colloidal spheres to Etalon probes one will get predictable behaviour for all the probes from the set ordered.
Colloidal probes with metal coating for conductive AFM measurements are available under request. If before production we get the detailed of application, which colloidal probes are ordered for, we could shift the parameters of the process to optimize probes' properties for their goal.
Each HA_NC chip has two bulks - the customer may choose the bulk, that a colloidal particle should be attached to. Another bulk will be removed to avoid confusion during the work.
The material and the size of the colloidal particles could be chosen from the table below.

 

Colloidal particles material and size standard offer:
 
Material type Diameters available, µm
SiO2 2.01; 3.5; 4.63; 6.62; 10; 15; 28.75
PMMA 1.5; 3.36; 6.44; 10; 108
BSG 2; 5; 10; 20
Gold 1.5 - 3; 3 - 5.5; 5.5 - 9
Glass beads 10 - 50
Barium Titanate Solid Glass 74 - 90; 90 - 106
Soda Lime Glass 100
Polysterene 1.98; 3.6; 6.1; 10; 15
Glass 70 - 110; 180 - 212

 

Specification of HA_NC colloidal AFM probes:

 
 Material
 Polysilicon lever
 Chip size  3.6 x 1.6 x 0.4 mm
 Reflective side  Au
 Cantilever number  1 rectangular
 Tip shape Colloidal ball

 

 One of cantilevers for colloidal particle attachement can be choosen:

 

Cantilever type A B Typical dispersion
Length, L (µm) 94 124 ± 2
Width, W (µm) 34 34 ± 3
Thickness, H (µm) 1.85 1.85 ± 0.15
Force Constant (N/m) 12 3.5 ±20%
Resonant frequency (kHz) 235 140 ± 10%
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