Optimal design of structured nanospheres for ultrasharp light-scattering resonances as molecular imaging multilabels

Kun Chen, Yang Liu, Guillermo Ameer, Vadim Backman
2005 Journal of Biomedical Optics  
Optical molecular imaging could potentially enable noninvasive high-resolution characterization and diagnosis of living tissue. The capability to image multiple molecular targets simultaneously is particularly important. Currently this task cannot be achieved using conventional optical contrast agents, due to their broad spectral responses (ϳ80 to 200 nm). Developments in research on semiconductor nanocrystals (quantum dots) provide one possible solution. We describe a different concept of
more » ... ent concept of multilabel molecular imaging that utilizes resonant light-scattering spectroscopy of multilayered nanospheres to achieve tunable ultrasharp resonance peaks with widths as narrow as 10 nm. Our theoretical study demonstrates that dozens of molecular targets can potentially be imaged simultaneously using this approach.
doi:10.1117/1.1899684 pmid:15910079 fatcat:dxwbougdhzh5haakxyqs37q6xy