Figure 3.
(a) Schematic illustration of hetero-assembly of DNA-AuNPs/UCNP top assemblies. (b–d) TEM images of DNA-AuNPs/UCNP top assemblies. Scale bar = 50 nm.
(a) Schematic illustration of hetero-assembly of DNA-AuNPs/UCNP top assemblies. (b–d) TEM images of DNA-AuNPs/UCNP top assemblies. Scale bar = 50 nm.