PMID- 25220106
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20150512
LR  - 20141010
IS  - 2040-3372 (Electronic)
IS  - 2040-3364 (Linking)
VI  - 6
IP  - 21
DP  - 2014 Nov 7
TI  - Anemone-like nanostructures for non-lithographic, reproducible, large-area, and 
      ultra-sensitive SERS substrates.
PG  - 12710-7
LID - 10.1039/c4nr03909b [doi]
AB  - The melt-infiltration technique enables the fabrication of complex nanostructures 
      for a wide range of applications in optics, electronics, biomaterials, and 
      catalysis. Here, anemone-like nanostructures are produced for the first time 
      under the surface/interface principles of melt-infiltration as a non-lithographic 
      method. Functionalized anodized aluminum oxide (AAO) membranes are used as 
      templates to provide large-area production of nanostructures, and polycarbonate 
      (PC) films are used as active phase materials. In order to understand formation 
      dynamics of anemone-like structures finite element method (FEM) simulations are 
      performed and it is found that wetting behaviour of the polymer is responsible 
      for the formation of cavities at the caps of the structures. These nanostructures 
      are examined in the surface-enhanced-Raman-spectroscopy (SERS) experiment and 
      they exhibit great potential in this field. Reproducible SERS signals are 
      detected with relative standard deviations (RSDs) of 7.2-12.6% for about 10,000 
      individual spots. SERS measurements are demonstrated at low concentrations of 
      Rhodamine 6G (R6G), even at the picomolar level, with an enhancement factor of 
       approximately 10(11). This high enhancement factor is ascribed to the significant electric 
      field enhancement at the cavities of nanostructures and nanogaps between them, 
      which is supported by finite difference time-domain (FDTD) simulations. These 
      novel nanostructured films can be further optimized to be used in chemical and 
      plasmonic sensors and as a single molecule SERS detection platform.
FAU - Daglar, Bihter
AU  - Daglar B
AD  - UNAM-National Nanotechnology Research Center, Bilkent University, 06800 Ankara, 
      Turkey. bayindir@nano.org.tr.
FAU - Demirel, Gokcen Birlik
AU  - Demirel GB
FAU - Khudiyev, Tural
AU  - Khudiyev T
FAU - Dogan, Tamer
AU  - Dogan T
FAU - Tobail, Osama
AU  - Tobail O
FAU - Altuntas, Sevde
AU  - Altuntas S
FAU - Buyukserin, Fatih
AU  - Buyukserin F
FAU - Bayindir, Mehmet
AU  - Bayindir M
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - Nanoscale
JT  - Nanoscale
JID - 101525249
EDAT- 2014/09/16 06:00
MHDA- 2014/09/16 06:01
CRDT- 2014/09/16 06:00
PHST- 2014/09/16 06:00 [entrez]
PHST- 2014/09/16 06:00 [pubmed]
PHST- 2014/09/16 06:01 [medline]
AID - 10.1039/c4nr03909b [doi]
PST - ppublish
SO  - Nanoscale. 2014 Nov 7;6(21):12710-7. doi: 10.1039/c4nr03909b.