7440-57-5 1 Gold 1 Journal Article 1 Macromolecular Substances 1 Research Support, Non-U.S. Gov't 1 Research Support, U.S. Gov't, Non-P.H.S. 1 bipyramids 1 mehr ... density gradient centrifugation 1 gold nanoparticles 1 localized surface plasmon resonance 1 refractive index sensing rhombic dodecahedra 1 weniger ...