conjugated gold nanoparticles inside of dna tetrahedron

dna tetrahedron origami helix pyramid biotechnology nucleotide nanotechnology engineering design folding technology science biochemistry biology chemistry scattered triangle shape tetrahedrite biological molecular structure toughness built three dimensional closeup genetic modification research conjugation process cut atom molecule gold colored metal inside attached assemble scaffold chain background assembly nanostructure oligonucleotide nanoscience helical covalent schematic conjugated tetrahedral double nanoparticles bioengineering isolated rigid golden joined atomic 3d strand robust tetrahedra rendering close gene mechanical