Would a "molecule thick" blade separate material by enough distance to damage it? I don't know if this should be in general physics. In science fiction the concept of a "mono-molecular blade" exists, this being a blade with an edge that it the thickness of a single molecule, or thinner. Ignoring considerations of material strength, would this blade actually do anything? I had the idea that a very thin blade might pass between atoms and leave them unaffected if they were not forced apart far enough to affect their atomic bonds?