Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Applied Spectroscopy
  • Vol. 64,
  • Issue 6,
  • pp. 578-583
  • (2010)

Molecular Fluorescence Enhancement on Fractal-Like Structures

Not Accessible

Your library or personal account may give you access

Abstract

In this report we discuss strong fluorescence enhancements on electrochemically grown silver nanostructures examined through fluorescence lifetime imaging microscopy (FLIM). Silver fractal-like nanostructures were deposited on three different substrates: glass, plastic, and silicon. For all of the surfaces the same dye was tested, DyLight 649, deposited in the form of a model immunoassay through excitation from a 635 nm pulsed solid-state laser. The brightness improvement in hot spots exceeded 300 fold, which is about two times higher than was observed previously on similar surfaces. The strongest enhancements correspond to the shortest lifetimes, indicating a strong interaction between excited molecules and silver nanostructures. Additionally, the photostability of the fluorescence dye was dramatically increased in the presence of electrochemically deposited silver nanostructures. The production of silver fractals is easy, very controllable, and can be applied to any surface. We therefore believe that silver fractal-like nanostructures can be used successfully in ultrasensitive assays and fluorophore trace detection.

PDF Article
More Like This
Surface-enhanced fluorescence from silver fractallike nanostructures decorated with silver nanoparticles

Jun Dong, Hairong Zheng, Xuqiang Li, Xiaoqing Yan, Yu sun, and Zhenglong Zhang
Appl. Opt. 50(31) G123-G126 (2011)

Fabrication of silver dendrite fractal structures for enhanced second harmonic generation and surface-enhanced Raman scattering

Ziqiang Cheng, Yunhang Qiu, Zonglin Li, Dajie Yang, Sijing Ding, Guangling Cheng, Zhonghua Hao, and Ququan Wang
Opt. Mater. Express 9(2) 860-869 (2019)

Waveguide mode enhancement of molecular fluorescence

W. R. Holland and D. G. Hall
Opt. Lett. 10(8) 414-416 (1985)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved