gold nanoparticles conjugated inside of dna cube

dna helix origami spiral nucleotide shape nanotechnology science technology folding biotechnology molecule biochemistry scaffolding scattered design engineering biology cube molecular structure square genetic research modification conjugation biological process three dimensional closeup pair physical levitation attached cut atom nanoparticle gold colored metal inside toughness helical assembly oligonucleotide schematic nanostructure double scaffold assemble covalent helices strand gene conjugated nanoparticles bioengineering atomic nanoscience paired rigid 3d floating mechanical close joined chain