Are there organisms which can sense the conformations, which we humans can't sense directly, i.e. without using any equipment?
If there are organisms which can sense conformations ("the shape or structure of something"; objects; example: elementary particles, atoms or anything) of sizes which we human's can't sense directly, can we know on what they are sensing, to compare on what is being known theoretically or by indirect means via equipment, for knowing them more precisely than before?
Sensing (in this context) = Knowing on how objects are at lower scale; knowing there shape, smell (!), taste, touch, sound, etc.
What is to be sensed? = It may be the properties of the conformations at lower scale, which may not be sensed directly by humans.
Organism (from wiki) = an organism (from Greek: οργανισμός, organismos) is any individual entity that exhibits the properties of life. It is a synonym for "life form".
NOTE: I had before asked on the organisms sensing conformations which humans may not have, even by using equipment. As the utility which is needed, is to know the elementary particles precisely, I have changed the question to know on organisms sensing the conformations which we humans can't sense directly, to compare with what is known from theory or equipment, and to know accurate details. And if I would have had limited the question to what organisms can sense which humans can't even by equipment, it seems to have become completely narrowed one, as humans, as said by others in the comments and answer, can sense most of smallest by equipment.