INVESTIGADORES
MARTINEZ Oscar Eduardo
artículos
Título:
10000 times volume reduction for fluorescence correlation spectroscopy using nano-antennas
Autor/es:
LAURA C. ESTRADA; PEDRO F. ARAMENDÍA; OSCAR E. MARTÍNEZ
Revista:
OPTICS EXPRESS
Editorial:
OPTICAL SOC AMER
Referencias:
Lugar: Washington; Año: 2008 vol. 16 p. 20597 - 20602
ISSN:
1094-4087
Resumen:
We present an experimental and theoretical study of a new scheme for Near-Field Fluorescence Correlation Spectroscopy that, using the field enhancement by optical nanoantennas, allows the reduction of the observation volume 4 orders of magnitude below the diffraction limit. This reduction can be used in two different ways: to increase the sample concentration and to improve the spatial resolution of the dynamics under study. Our experimental results using individual gold nanoparticles and a 150μM Rose Bengal solution in glycerol confirm the volume reduction.
