SNT22

Silicon Nitride Tall (SNT) AFM probes will suit well when standard tip's height is not enough for imaging tall biological objects. Both tip and cantilever are made of silicon nitride material. These probes are compatible with most of commercial SPM/AFM instruments. The following features make these probes unique for biological applications:

Extra Tall Tip With High Aspect Ratio: Reduced artifacts when imaging tall biological features;
A silicon pad, which holds a tip, is specially designed to increase laser reflectivity without metal coating in liquid medium;
SNT22 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.

Tip Specifications
Material	Silicon Nitride on Si
Height (μm)	14 - 16
ROC (nm)	<30
Shape	Tetrahedral
Included Angle	15°
Metal Coating	None

Cantilever Specifications
Material	Silicon Nitride
Shape	V-Shape
Reflex Side Coating	Ti (8nm) /Au (35nm )

Value	Cantilever length, L±10µm	Cantilever width, W±2µm	Cantilever thickness, T±0.05 µm	Resonant frequency, kHz			Force constant, N/m
Value	Cantilever length, L±10µm	Cantilever width, W±2µm	Cantilever thickness, T±0.05 µm	min	typical	max	min	typical	max
Lever A	105	15	0.55	27	37	51	0.08	0.162	0.321
Lever B	205	20	0.55	10	12	15	0.017	0.029	0.048
Lever C	105	22	0.55	30	41	55	0.123	0.237	0.453
Lever D	205	40	0.55	12	13	16	0.041	0.058	0.092