Tip-enhanced fluorescence imaging of quantum dots

TY - JOUR

T1 - Tip-enhanced fluorescence imaging of quantum dots

AU - Huang, F M

AU - Festy, F

AU - Richards, D R

PY - 2005/10/31

Y1 - 2005/10/31

N2 - We have imaged the fluorescence from a single quantum dot cluster using an apertureless scanning near-field optical microscope. When a sharp gold tip is brought within a few nanometers from the sample surface, the resulting enhancement in quantum dot fluorescence in the vicinity of the tip leads to a resolution of about 60 nm. We determine this enhancement of the fluorescence to be about fourfold in magnitude, which is consistent with the value expected as a result of competition between fluorescence quenching and electromagnetic field enhancement. (C) 2005 American Institute of Physics

AB - We have imaged the fluorescence from a single quantum dot cluster using an apertureless scanning near-field optical microscope. When a sharp gold tip is brought within a few nanometers from the sample surface, the resulting enhancement in quantum dot fluorescence in the vicinity of the tip leads to a resolution of about 60 nm. We determine this enhancement of the fluorescence to be about fourfold in magnitude, which is consistent with the value expected as a result of competition between fluorescence quenching and electromagnetic field enhancement. (C) 2005 American Institute of Physics

U2 - 10.1063/1.2115073

DO - 10.1063/1.2115073

M3 - Article

VL - 87

SP - 1

EP - 3

JO - APPLIED PHYSICS LETTERS

JF - APPLIED PHYSICS LETTERS

IS - 18

M1 - 183101

ER -