Multiple integrated tips scanning probe microscope
Device and system for characterizing samples using multiple integrated tips scanning probe microscopy. Multiple Integrated Tips (MiT) probes are comprised of two or more monolithically integrated and movable AFM tips positioned to within nm of each other, enabling unprecedented micro to nanoscale probing functionality in vacuum or ambient conditions. The tip structure is combined with capacitive comb structures offering laserless high-resolution electric-in electric-out actuation and sensing capability and novel integration with a Junction Field Effect Transistor for signal amplification and low-noise operation. This “platform-on-a-chip” approach is a paradigm shift relative to current technology based on single tips functionalized using stacks of supporting gear: lasers, nano-positioners and electronics.
1. A method of aligning at least two probe tips in a scanning probe adapter, the method comprising the steps of:
providing a probe head comprising at least two probe tips;
moving the sample and the at least two probe tips into proximity;
capturing, using an optical microscope, an image of the at least two probe tips and a corresponding reflection of the at least two probe tips;
tracking, using an image recognition algorithm, an outer line shape of the at least two probe tips and the corresponding reflections;
calculating a distance between an apex each of the at least two probe tips and the apex of the corresponding reflection;
comparing the calculated distances to determine which, if any, of the at least two probe tips had a shorter calculated distance; and
if one of the at least two probe tips had a shorter calculated distance, rotating the probe head away from whichever of the at least two probe tips had the shorter calculated distance, or determining that the at least two probe tips are aligned if equivalent distances are calculated for each of the at least two probe tips.
2. The method of claim 1 , further comprising the step of repeating the method until equivalent distances are calculated from the at least two probe tips.