Microdimensional

Microdimensional mastery was proposed by John Barrow, going by the fact that humans (or other civilizations) have found it more cost-effective to extend any abilities to manipulate their environment over increasingly smaller dimensions rather than increasingly larger ones, therefore reversing the classification downward from Type I-minus to Type Omega-minus.

Microdimensional categories of the Kardashev scale:
According to this scale, humans, having wide expertise in various branches of chemistry and biology, have passed the stage of Type III-minus. Type IV-minus technologies (that have had practical and widespread applications) have been seen in areas like nanotechnology, semiconductors, materials science and genetic engineering, whereas Type V-minus has seen large scale application in the field and subfields of nuclear physics. Type VI-minus has had tentative research in the field of particle physics with particle colliders such as the Large Hadron Collider.

See also:

Technology scales