English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Getting real: influence of structural disorder on the performance of plasmonic hole array sensors fabricated by a bottom-up approach

MPS-Authors
/persons/resource/persons75965

Quint,  Stefan
Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

/persons/resource/persons75927

Pacholski,  Claudia
Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society;
Biophysical Chemistry, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany;

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Quint, S., & Pacholski, C. (2014). Getting real: influence of structural disorder on the performance of plasmonic hole array sensors fabricated by a bottom-up approach. Journal of Materials Chemistry C: Materials for Optical and Electronic Devices, 2, 7632-7638. doi:10.1039/C4TC01244E.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-BAF6-5
Abstract
Hole arrays in gold films possessing different degrees of order were fabricated by a combination of colloidal lithography and chemical gold deposition. Here, hydrogel spheres were used for the formation of non-close packed microsphere arrays, which act as masks for subsequent gold film deposition. The assembly of the soft spheres into arrays possessing different degrees of order was controlled by the addition of alcohol and application of mechanical shear. The resulting hydrogel mask was translated into a hole array by functionalization of the glass surface with 3-aminopropyltriethoxysilane, deposition of gold nanoparticles and subsequent gold film growth by electroless deposition. The degree of order of the resulting nanostructures was thoroughly determined by analyzing SEM images and correlated with variations in their transmissive optical properties. In general the degree of order has a tremendous effect on the position of the transmission maxima of the hole arrays. This is not surprising, as deviations from the ideal hexagonal packing will lead to an increase of the lattice constant of the array, which determines the transmission peak positions. Hence, the transmission spectra can be employed for a spectral quality control of the order of the fabricated hole arrays in gold films. However, the sensing performance of the plasmonic hole arrays is only partly influenced by the degree of order. The impact of the degree of order of the hole array on its sensitivity is thus determined by the spectral feature used for sensing.