Octosensis Microcantilever are chips with two or eight microtechnological fabricated cantilever sensors. They are available for static as well as dynamic mode.

A special support structure enables a simple functionalisation of each cantilever with the micro capillary technique.

Due to a very well defined bracing at the beginning of the cantilevers a minimum variation of the spring constant and resonance frequency is provided. The typical variation of the resonance frequency within one chip is less than 1%.

Vertical sidewalls of the chip guarantee an easy handling with tweezers.

Available packages:

  • 10, 25, 50 and 100 octosensis microarrays

Feel free to ask for special coatings or geometries

 

Variation of the resonance frequency within one chip

  

SEM-Image of a cantileverchip

Micro capillary technique

 

The Octosensis cantilever sensors have been developed cooperatively between Micromotive GmbH and Max-Planck-Institut for Polymer Research in Mainz.

 

Static mode sensoren

Specs/Cantilever type octo-500 octo-750 octo-1000
Total cantilever thickness 900 ± 300 nm 900 ± 300 nm 900 ± 300 nm
Cantilever thickness within one chip ± 50 nm ± 50 nm ± 50 nm
Length 450 µm 700 µm 950 µm
Length of bracing 50 ± 10 µm 50 ± 10 µm 50 ± 10 µm
Thickness of bracing 10 µm 10 µm 10 µm
Cantilever width 90 µm 90 µm 90 µm
Pitch 250 µm 250 µm 250 µm
Resonance frequeny 4 - 8 kHz 1.5 - 3.2 kHz 0.9 - 1.7 kHz
Spring constant 8 - 60 mN/m 2 - 17 mN/m 0.8 - 7 mN/m

Dynamic mode sensors

Specs/Cantilever type octo-500D octo-750D octo-1000D
Total cantilever thickness 5.0 ± 0.3 µm 5.0 ± 0.3 µm 5.0 ± 0.3 µm
Cantilever thickness within one chip ± 50 nm ± 50 nm ± 50 nm
Length 450 µm 700 µm 950 µm
Length of bracing 50 ± 10 µm 50 ± 10 µm 50 ± 10 µm
Thickness of bracing 30 µm 30 µm 30 µm
Cantilever width 90 µm 90 µm 90 µm
Pitch 250 µm 250 µm 250 µm
Resonance frequency 30 - 35 kHz 12 - 14 kHz 6.7 - 7.7 kHz
Spring constant 3.8 - 5.5 N/m 1.0 - 1.5 N/m 0.4 - 0.6 N/m