Quantum bio-nanosensors based on quantum dot-metallic nanoparticle systems

S. M. Sadeghi

doi:10.1117/12.2003079

5 March 2013 Quantum bio-nanosensors based on quantum dot-metallic nanoparticle systems

S. M. Sadeghi

Proceedings Volume 8570, Frontiers in Biological Detection: From Nanosensors to Systems V; 85700J (2013) https://doi.org/10.1117/12.2003079
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

When metallic nanoparticles are put in the vicinity of semiconductor quantum dots and driven by a coherent light source, their intrinsic plasmonic fields can be replaced with a new type of fields (coherent-plasmonic fields). These fields are generated via coherent coupling of excitons in quantum dots and localized surface plasmon resonances (LSPRs). We show the coherent-plasmonic field of a metallic nanoparticle can lead to a significantly larger field enhancement than that caused by its LSPR. Utilizing this, we investigate how such a coherent field enhancement can improve the sensitivities plasmonic nanosensors for detection single biological molecules. The results demonstrate application of quantum coherence in quantum dot-metallic nanoparticle systems for chemical and biological sensing applications.

Citation Download Citation

S. M. Sadeghi "Quantum bio-nanosensors based on quantum dot-metallic nanoparticle systems", Proc. SPIE 8570, Frontiers in Biological Detection: From Nanosensors to Systems V, 85700J (5 March 2013); https://doi.org/10.1117/12.2003079

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