Quantized plasmon quenching dips nanospectroscopy via plasmon resonance energy transfer
Gang Logan Liu4, Yi-Tao Long1, 4, Yeonho Choi1, Taewook Kang1 & Luke P Lee1, 2
1 Biomolecular Nanotechnology Center, Berkeley Sensor and Actuator Center, Department of Bioengineering, University of California-Berkeley, 442 Stanley Hall, Berkeley, California 94720, USA.
2 Joint Graduate Group in Bioengineering, University of California at San Francisco and Berkeley, 1700 4th Street, San Francisco, California 94158, USA.
3 Present address: Center for Micro and Nano Technology, Lawrence Livermore National Laboratory, P.O. Box 808, L-223, Livermore, California 94551, USA.
4 These authors contributed equally to this work.
Correspondence should be addressed to Luke P Lee lplee@berkeley.edu
We observed quantized plasmon quenching dips in resonant Rayleigh scattering spectra by plasmon resonance energy transfer (PRET) from a single nanoplasmonic particle to adsorbed biomolecules. This label-free biomolecular absorption nanospectroscopic method has ultrahigh molecular sensitivity.
