Figure 5From: DNA-functionalized silicon nitride nanopores for sequence-specific recognition of DNA biosensorCharacterization of functionalized nanopores. (A-D) FESEM images: before the functionalization, functionalized with 3-APTES, treated with cross-linker, and DNA modified, respectively. (E-H) EDS measurements: before the functionalization (-OH), functionalized with 3-APTES (NH3 +), treated with cross-linker (Sā=āNā=āC), and DNA modified, respectively.Back to article page