Nicolas Vogel1, Mathieu Jung2, Noelia L. Bocchio3, Markus Retsch2, Maximilian Kreiter2, Ingo Köper2
1Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
2MPI for Polymer Research, Max Planck Society
3Ecole Polytech Fed Lausanne, Lab Opt Biomed, CH-1015 Lausanne, Switzerland
Tóm tắt
AbstractNanoparticle arrays created by nanosphere lithography are widely used in sensing applications since their localized surface plasmon resonances are extremely sensitive to changes in the local dielectric environment. A major drawback for any biologically oriented sensing application of conventionally produced particle arrays is the lack of stability of the nanoparticles in aqueous media and buffer solutions. Here, a robust and reusable nanoscale sensing platform based on localized surface plasmon resonances of gold nanoparticles embedded in a silicon dioxide matrix is presented. The architecture exhibits extremely high stability in aqueous environments and can be regenerated several times by simple mechanical cleaning of the surface. The platforms surface is ultraflat by design, thus making it an ideal substrate for any bio‐oriented sensing application.
