Terahertz (THz) Electromagnetic Field Enhancement in Periodic Subwavelength Structures

2008 ◽  
Vol 8 (6) ◽  
pp. 791-796 ◽  
Author(s):  
Boris Gelmont ◽  
Ramakrishnan Parthasarathy ◽  
Tatiana Globus ◽  
Alexei Bykhovski ◽  
Nathan Swami
Keyword(s):  
Electromagnetic Field ◽  
Field Enhancement ◽  
Subwavelength Structures

Water Droplet Self-Assembly to Au Nanoporous Films with Special Light Trapping and Surface Electromagnetic Field Enhancement

Langmuir ◽  
2018 ◽  
Vol 34 (47) ◽  
pp. 14124-14133 ◽  
Author(s):  
Vanessa H. Fragal ◽  
Elizângela H. Fragal ◽  
Adley F. Rubira ◽  
Rafael Silva
Keyword(s):  
Electromagnetic Field ◽  
Self Assembly ◽  
Water Droplet ◽  
Light Trapping ◽  
Field Enhancement ◽  
Nanoporous Films

scholarly journals Nonlinear Modulation of Plasmonic Resonances in Graphene-Integrated Triangular Dimers at Terahertz Frequencies

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2466
Author(s):  
Quan Li ◽  
Shuang Wang ◽  
Tai Chen
Keyword(s):  
Strong Field ◽  
Field Enhancement ◽  
Subwavelength Structures ◽  
Plasmonic Resonance ◽  
Nonlinear Conductivity ◽  
Resonance Modes ◽  
Terahertz Frequencies ◽  
Terahertz Sensing ◽  
Nonlinear Modulation ◽  
A Charge

Metamaterials made from artificial subwavelength structures hold great potential in designing functional devices at microwave, terahertz, infrared, and optical frequencies. In this work, we study the active switching effect of the plasmonic resonance modes in triangular dimer (DTD) structure using graphene in the terahertz regime. The sole DTD structure can only support a dipolar bonding dimer plasmonic (BDP) mode, whose field enhancement factor at the gap center can reach 67.4. However, with a metallic junction in the dimer, the BDP mode switches to a charge transfer plasmonic (CTP) mode. When changing the metallic junction to a graphene stripe, an active modulation effect of the CTP mode can be realized by altering the nonlinear conductivity of graphene through strong-field terahertz incidence. The proposed design is quite promising in terahertz sensing, amplitude switching and nonlinear effect enhancement, etc.

Optical Properties and Local Electromagnetic Field Enhancement of Periodic Rectangular Nanohole Arrays in Au-Interlayer-Au Multilayer Films

Plasmonics ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 1929-1937 ◽  
Author(s):  
Zao Yi ◽  
Miao Liu ◽  
Jiangshan Luo ◽  
Xibin Xu ◽  
Weibin Zhang ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Optical Properties ◽  
Field Enhancement ◽  
Multilayer Films ◽  
Nanohole Arrays

scholarly journals Calculating average surface enhancement factors of randomly nanostructured electrodes by a combination of SERS and impedance spectroscopy

2015 ◽  
Vol 17 (33) ◽  
pp. 21220-21225 ◽  
Author(s):  
J. Kozuch ◽  
N. Petrusch ◽  
D. Gkogkou ◽  
U. Gernert ◽  
I. M. Weidinger
Keyword(s):  
Electromagnetic Field ◽  
Impedance Spectroscopy ◽  
Field Enhancement ◽  
Surface Enhancement ◽  
Average Surface ◽  
Nanostructured Electrodes ◽  
Electrode Surfaces ◽  
Enhancement Factors ◽  
Simultaneous Use

Simultaneous use of SERS and impedance spectroscopy allows determining electromagnetic field enhancement factors of electrode surfaces with random nanostructures.

Electromagnetic field enhancement in TERS configurations

2009 ◽  
Vol 40 (10) ◽  
pp. 1343-1348 ◽  
Author(s):  
Zhilin Yang ◽  
Javier Aizpurua ◽  
Hongxing Xu
Keyword(s):  
Electromagnetic Field ◽  
Field Enhancement

SNOM investigation of the electromagnetic field intensity and polarization distribution in the vicinity of subwavelength structures

2004 ◽  
Author(s):  
Maxim V. Bashevoy ◽  
Alexander A. Ezhov ◽  
Sergey A. Magnitskii ◽  
Dmitrii V. Malakhov ◽  
Dmitry A. Muzychenko ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Field Intensity ◽  
Subwavelength Structures ◽  
Polarization Distribution

scholarly journals Electromagnetic Field Enhancement on Axially Heterostructured NWs: The Role of the Heterojunctions

2018 ◽  
Vol 47 (9) ◽  
pp. 5072-5076 ◽  
Author(s):  
J. L. Pura ◽  
J. Souto ◽  
P. Periwal ◽  
T. Baron ◽  
J. Jiménez
Keyword(s):  
Electromagnetic Field ◽  
Field Enhancement

scholarly journals Fabrication of Au and Ag – Coated AFM Probes for Tip-Enhanced Raman Spectroscopy

2021 ◽  
Vol 2015 (1) ◽  
pp. 012013
Author(s):  
L S Basalaeva ◽  
N N Kurus ◽  
E E Rodyakina ◽  
K V Anikin ◽  
A G Milekhin
Keyword(s):  
Raman Spectroscopy ◽  
Electromagnetic Field ◽  
Localized Surface Plasmon Resonance ◽  
Metal Cluster ◽  
Field Enhancement ◽  
Optical Characterization ◽  
Localized Surface Plasmon ◽  
Tip Enhanced Raman Spectroscopy ◽  
Shape And Size

Abstract In this work, approaches for fabrication metal coated probes for Tip Enhanced Raman Spectroscopy (TERS) are considered. It was proposed to use optical characterization of probes to achieve the effective TERS of semiconductor nanoobjects. The shape and size of the metal cluster at the tip apex determines the position of the localized surface plasmon resonance, the electromagnetic field enhancement and, thus, TERS performance. The possibility of optimizing the characteristics of the probes for TERS studies of nanoobjects has been investigated.

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