SNS22

Silicon Nitride Sharp (SNS) AFM probes consist of a silicon nitride cantilever with low stiffness and a sharp silicon integrated tip. They were specially designed for AFM topography imaging of soft biological samples in liquid environment. Their features, listed below, were optimized for high-quality scans acquisition:

• Silicon nitride cantilever has both respectively high resonance and small force constant in the same time. Due to this combination SNS22 probes can be used for both contact and tapping modes in liquid;
• Silicon tip is sharpened to have typical curvature radius 6 nm. Such a sharp tip can get AFM scans of high resolution;
• A silicon pad, which holds a tip, is specially designed to increase laser reflectivity without metal coating in liquid medium;
• SNS22 probes are supplied with no reflection side coating to avoid thermal drift due to the bimorf effect. It increases imaging speed as the one doesn't need to wait for cantilever's stabilization in the liquid solution;
• Under request a tip can be coated with conductive material for electrical measurements;
• Under request a tip can be functionalized to be hydrophilic or hydrophobic.