It is fun when examining structures in biology (probably also true in physics, math, etc, its just that my experience is with biology) one finds little circumstances which are very likely frequent happenings with real significance, but show up relatively obscurely, and are difficult to quantify.  So is the case with this multimer which has an unusual crook to its arm, and yes,  different places along the arm tend to gravitate to other places on the arm.  THUS THE FORMATION OF HEARTS… LOL.  While this is a post in jest…. it also is NOT a post in jest.  Left images are cropped from a 30-36 arm multimer image (AFM) and processed with photoshop high pass 250 filter, then range limit of 100-255 in gwyddion.

Right hand images are rotated cropped and vectorized and trimmed in CorelDRAW.