Diamond-silver apertures with plasmonic gratings

2012 ◽  
Author(s):  
Jennifer Choy ◽  
Irfan Bulu ◽  
Birgit Hausmann ◽  
Thomas Babinec ◽  
Marko Loncar
Keyword(s):  
Plasmonic Gratings

scholarly journals Fabrication-friendly polarization-sensitive plasmonic grating for optimal surface-enhanced Raman spectroscopy

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Arpan Dutta ◽  
Tarmo Nuutinen ◽  
Khairul Alam ◽  
Antti Matikainen ◽  
Peng Li ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Fill Factor ◽  
Surface Enhanced Raman Spectroscopy ◽  
Transverse Magnetic ◽  
Raman Signal ◽  
Optical Resonance ◽  
Excitation Light ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Plasmonic Gratings

Abstract Plasmonic nanostructures are widely utilized in surface-enhanced Raman spectroscopy (SERS) from ultraviolet to near-infrared applications. Periodic nanoplasmonic systems such as plasmonic gratings are of great interest as SERS-active substrates due to their strong polarization dependence and ease of fabrication. In this work, we modelled a silver grating that manifests a subradiant plasmonic resonance as a dip in its reflectivity with significant near-field enhancement only for transverse-magnetic (TM) polarization of light. We investigated the role of its fill factor, commonly defined as a ratio between the width of the grating groove and the grating period, on the SERS enhancement. We designed multiple gratings having different fill factors using finite-difference time-domain (FDTD) simulations to incorporate different degrees of spectral detunings in their reflection dips from our Raman excitation (488 nm). Our numerical studies suggested that by tuning the spectral position of the optical resonance of the grating, via modifying their fill factor, we could optimize the achievable SERS enhancement. Moreover, by changing the polarization of the excitation light from transverse-magnetic to transverse-electric, we can disable the optical resonance of the gratings resulting in negligible SERS performance. To verify this, we fabricated and optically characterized the modelled gratings and ensured the presence of the desired detunings in their optical responses. Our Raman analysis on riboflavin confirmed that the higher overlap between the grating resonance and the intended Raman excitation yields stronger Raman enhancement only for TM polarized light. Our findings provide insight on the development of fabrication-friendly plasmonic gratings for optimal intensification of the Raman signal with an extra degree of control through the polarization of the excitation light. This feature enables studying Raman signal of exactly the same molecules with and without electromagnetic SERS enhancements, just by changing the polarization of the excitation, and thereby permits detailed studies on the selection rules and the chemical enhancements possibly involved in SERS.

Nanoprojection Lithography Using Self-Assembled Interference Modules for Manufacturing Plasmonic Gratings

2012 ◽  
Vol 24 (15) ◽  
pp. 1273-1275 ◽  
Author(s):  
Fang-Tzu Chuang ◽  
Pai-Yen Chen ◽  
Yu-Wei Jiang ◽  
Mohamed Farhat ◽  
Hung-Hsin Chen ◽  
...  
Keyword(s):  
Self Assembled ◽  
Plasmonic Gratings

scholarly journals Single-Molecule Surface Plasmon-Coupled Emission with Plasmonic Gratings

ACS Omega ◽  
2017 ◽  
Vol 2 (5) ◽  
pp. 2041-2045 ◽  
Author(s):  
Aaron Wood ◽  
Cherian J. Mathai ◽  
Keshab Gangopadhyay ◽  
Sheila Grant ◽  
Shubhra Gangopadhyay
Keyword(s):  
Surface Plasmon ◽  
Single Molecule ◽  
Plasmonic Gratings ◽  
Molecule Surface

Temperature dependence of quantum efficiency enhancement using plasmonic gratings on nBn detectors with thin absorbers

2019 ◽  
Vol 13 (04) ◽  
pp. 1
Author(s):  
Jill A. Nolde ◽  
Eric M. Jackson ◽  
Mijin Kim ◽  
Chul Soo Kim ◽  
Chadwick L. Canedy ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Quantum Efficiency ◽  
Efficiency Enhancement ◽  
Plasmonic Gratings

Dual-width plasmonic gratings with sub-10 nm gaps for biosensor applications

2016 ◽  
Author(s):  
Stephen J. Bauman ◽  
Ahmad A. Darweesh ◽  
Joseph B. Herzog
Keyword(s):  
Biosensor Applications ◽  
Plasmonic Gratings

Plasmonic gratings for interaction with quantum emitters

2008 ◽  
Author(s):  
Yiyang Gong ◽  
Jesse Lu ◽  
Szu-Lin Cheng ◽  
Yoshio Nishi ◽  
Jelena Vuckovic
Keyword(s):  
Plasmonic Gratings ◽  
Quantum Emitters

Fluorescence enhancement from nano-gap embedded plasmonic gratings by a novel fabrication technique with HD-DVD

2012 ◽  
Vol 23 (49) ◽  
pp. 495201 ◽  
Author(s):  
K Bhatnagar ◽  
A Pathak ◽  
D Menke ◽  
P V Cornish ◽  
K Gangopadhyay ◽  
...  
Keyword(s):  
Fluorescence Enhancement ◽  
Fabrication Technique ◽  
Plasmonic Gratings
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