Fig. 4: Beryllene-graphene hybrids.

a FESEM image of Be-G hybrid. b TEM imaging of Be-G hybrid. c–e Elemental mapping of TEM image, Be and carbon atoms are identified via color coding (Green for Be and Red for carbon (graphene)). f HRTEM image of Be-G hybrid depicts the different arrangements of atoms marked in three regions. g HRTEM image of region 1 of (f) bestows the hexagonal symmetry of atoms surrounding an atom in the center along with the FFT pattern. j Average interatomic distance in two directions, as marked in (g), was 0.254 nm (green line) and 0.29 nm (red line). h HRTEM image of Location 2 marked in the image (f). k The average interatomic distances for region 2 as zoomed-in (h) are 0.255 nm (green line) and 0.243, 0.270 and 0.245 (red line). i HRTEM image of section 3 of (f). l The average atomic distances were 0.256 nm along with the array of atoms (green line) and 0.28 nm perpendicular to the array of atoms (red line) of image (i). m Raman spectra of Be-G hybrid exhibits peaks at 457, 620 cm⁻¹ correspond to Be and 1347, 1577 and 2691 cm⁻¹ belong to graphene. n Peak intensity map of beryllene peak (~450 cm⁻¹). o Peak intrensity map of graphene G peak (~1580 cm⁻¹).