Abstract
In this work, a detailed and systematic study of the plasmonic properties of a novel film over nanowell surface is investigated. These nanostructures are fabricated using nanosphere lithography and reactive ion etching and structurally characterized by AFM and SEM. The resulting structures show remarkably narrow plasmon bands in reflectance spectra (as little as 0.10 eV) and greater sensitivity to external dielectric environment than has been seen in other nanoparticle systems, resulting in an improvement in the figure of merit (FOM = refractive index sensitivity (eV·RIU -1)/full width at half-maximum (eV)) for refractive index sensing. Theoretical modeling for the plasmon spectra of these nanostructures is done using discrete dipole approximation code under periodic boundary conditions. The modeling results match the measurements accurately in aspects of the variation of the plasmon line shape with altering internanowell distance and dielectric environment.
| Original language | English |
|---|---|
| Pages (from-to) | 22351-22358 |
| Number of pages | 8 |
| Journal | Journal of Physical Chemistry B |
| Volume | 109 |
| Issue number | 47 |
| DOIs | |
| Publication status | Published - Dec 1 2005 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
Cite this
Plasmonic properties of film over nanowell surfaces fabricated by nanosphere lithography. / Hicks, Erin M.; Zhang, Xiaoyu; Zou, Shengli; Lyandres, Olga; Spears, Kenneth G.; Schatz, George C; Van Duyne, Richard P.
In: Journal of Physical Chemistry B, Vol. 109, No. 47, 01.12.2005, p. 22351-22358.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Plasmonic properties of film over nanowell surfaces fabricated by nanosphere lithography
AU - Hicks, Erin M.
AU - Zhang, Xiaoyu
AU - Zou, Shengli
AU - Lyandres, Olga
AU - Spears, Kenneth G.
AU - Schatz, George C
AU - Van Duyne, Richard P.
PY - 2005/12/1
Y1 - 2005/12/1
N2 - In this work, a detailed and systematic study of the plasmonic properties of a novel film over nanowell surface is investigated. These nanostructures are fabricated using nanosphere lithography and reactive ion etching and structurally characterized by AFM and SEM. The resulting structures show remarkably narrow plasmon bands in reflectance spectra (as little as 0.10 eV) and greater sensitivity to external dielectric environment than has been seen in other nanoparticle systems, resulting in an improvement in the figure of merit (FOM = refractive index sensitivity (eV·RIU -1)/full width at half-maximum (eV)) for refractive index sensing. Theoretical modeling for the plasmon spectra of these nanostructures is done using discrete dipole approximation code under periodic boundary conditions. The modeling results match the measurements accurately in aspects of the variation of the plasmon line shape with altering internanowell distance and dielectric environment.
AB - In this work, a detailed and systematic study of the plasmonic properties of a novel film over nanowell surface is investigated. These nanostructures are fabricated using nanosphere lithography and reactive ion etching and structurally characterized by AFM and SEM. The resulting structures show remarkably narrow plasmon bands in reflectance spectra (as little as 0.10 eV) and greater sensitivity to external dielectric environment than has been seen in other nanoparticle systems, resulting in an improvement in the figure of merit (FOM = refractive index sensitivity (eV·RIU -1)/full width at half-maximum (eV)) for refractive index sensing. Theoretical modeling for the plasmon spectra of these nanostructures is done using discrete dipole approximation code under periodic boundary conditions. The modeling results match the measurements accurately in aspects of the variation of the plasmon line shape with altering internanowell distance and dielectric environment.
UR - http://www.scopus.com/inward/record.url?scp=29144455813&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=29144455813&partnerID=8YFLogxK
U2 - 10.1021/jp0545400
DO - 10.1021/jp0545400
M3 - Article
C2 - 16853911
AN - SCOPUS:29144455813
VL - 109
SP - 22351
EP - 22358
JO - Journal of Physical Chemistry B Materials
JF - Journal of Physical Chemistry B Materials
SN - 1520-6106
IS - 47
ER -