1. Refractometric Sensing with Periodic Nano-Indented Arrays: Effect of Structural Dimensions
- Author
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Robert Magnusson, Hafez Hemmati, Daniel J. Carney, Jae W. Yoon, Alexander L. Fannin, H. G. Svavarsson, Tækni- og verkfræðideild (HR), School of Science and Engineering (RU), Háskólinn í Reykjavík, and Reykjavik University
- Subjects
Holography ,Physics::Optics ,02 engineering and technology ,Photoresist ,lcsh:Chemical technology ,01 natural sciences ,Biochemistry ,Lífefnafræði ,Analytical Chemistry ,law.invention ,law ,lcsh:TP1-1185 ,Nanocups ,Surface plasmon resonance ,periodic structures ,Instrumentation ,Gas detectors ,021001 nanoscience & nanotechnology ,Atomic and Molecular Physics, and Optics ,Optoelectronics ,0210 nano-technology ,Rafgas ,Materials science ,Fabrication ,plasmonic sensors ,Periodic structures ,Rafeindaverkfræði ,Rafmagnsverkfræði ,010402 general chemistry ,Article ,Litrófsgreining ,Efnafræði ,Refractometer ,Nano ,Electrical and Electronic Engineering ,nanocups ,Plasmon ,Sensors ,business.industry ,Plasmonic sensors ,Atómfræði ,biosensors ,0104 chemical sciences ,Nanótækni ,Biosensors ,refractometer ,business ,Sameindafræði ,Refractive index - Abstract
Publisher's version.(útgefin grein), Fabrication and sensor application of a simple plasmonic structure is described in this paper. The sensor element consists of nano-patterned gold film brought about from two-dimensional periodic photoresist templates created by holographic laser interference lithography. Reflectance spectroscopy revealed that the sensor exhibits significant refractive index sensitivity. A linear relationship between shifts in plasmonic resonances and changes in the refractive index were demonstrated. The sensor has a bulk sensitivity (SB) of 880 nm/refractive index unit and work under normal incidence conditions. This sensitivity exceeded that of many common types of plasmonic sensors with more intricate structures. A modeled spectral response was used to study the effect of its geometrical dimensions on plasmonic behavior. A qualitative agreement between the experimental spectra and modeled ones was obtained., This research was supported in part by the UT System Texas Nanoelectronics Research Superiority Award funded by the State of Texas Emerging Technology Fund. Additional support was provided by the Texas Instruments Distinguished University Chair in Nanoelectronics endowment., "Peer Reviewed"
- Published
- 2019