Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Vardeny, Zeev Valentine; Nahata, Ajay |
Other Author |
Agrawal, A.; Matsui, T.; Zhu, W. |
Title |
Terahertz spectroscopy of plasmonic fractals |
Date |
2009-03 |
Description |
We use terahertz time-domain spectroscopy to study the transmission properties of metallic films perforated with aperture arrays having deterministic or stochastic fractal morphologies (‘‘plasmonic fractals''), and compare them with random aperture arrays. All of the measured plasmonic fractals show transmission resonances and antiresonances at frequencies that correspond to prominent features in their structure factors in k space. However, in sharp contrast to periodic aperture arrays, the resonant transmission enhancement decreases with increasing array size. This property is explained using a densitydensity correlation function, and is utilized for determining the underlying fractal dimensionality, D(<2). Furthermore, a sum rule for the transmission resonances and antiresonances in plasmonic fractals relative to the transmission of the corresponding random aperture arrays is obtained, and is shown to be universal. |
Type |
Text |
Publisher |
American Physical Society |
Journal Title |
Physical Review Letters |
Volume |
102 |
Issue |
11 |
First Page |
113901 |
Last Page |
113901 |
DOI |
10.1103/PhysRevLett.102.113901 |
citatation_issn |
0031-9007 |
Subject |
Plasmonic fractals; Random aperture arrays |
Subject LCSH |
Terahertz spectroscopy; Plasmons (Physics); Fractals; Metallic films -- Optical properties |
Language |
eng |
Bibliographic Citation |
Agrawal, A., Matsui, T., Zhu, W., Nahata, A., & Vardeny, Z. V. (2009). Terahertz spectroscopy of plasmonic fractals. Physical Review Letters, 102(11), 113901-1-4. |
Rights Management |
(c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.102.113901 |
Format Medium |
application/pdf |
Format Extent |
566,045 bytes |
Identifier |
ir-main,10126 |
ARK |
ark:/87278/s6c25dmj |
Setname |
ir_uspace |
ID |
703436 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6c25dmj |