2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/118702It has been found that periodically closely spaced vacancies on a graphite sheet cause a significant rearrange-ment of its electronic spectrum: metallic waveguides with a high density of states near the Fermi level are formed along the vacancy lines. In the direction perpendicular to these lines, the spectrum exhibits a semimetal or semiconductor character with a gap where a vacancy miniband is degenerated into impurity levels.4 pages, 3 figuresMaterials Sciencetext