Localized surface plasmon resonance shift and its application in scanning near-field optical microscopy

2021 ◽  
Author(s):  
Jiawei Zhang ◽  
Gitanjali Kolhatkar ◽  
Andreas Ruediger
Keyword(s):  
Raman Spectroscopy ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Near Field ◽  
Localized Surface Plasmon ◽  
Resonance Shift ◽  
Raman Modes ◽  
Tip Enhanced Raman Spectroscopy

The localized surface plasmon resonance (LSPR) position in tip-enhanced Raman spectroscopy (TERS) is of great importance to the understanding and interpretation of the relative intensity of different enhanced Raman modes....

scholarly journals Sample induced intensity variations of localized surface plasmon resonance in tip-enhanced Raman spectroscopy

2020 ◽  
Vol 28 (18) ◽  
pp. 25998
Author(s):  
Jiawei Zhang ◽  
Azza Hadj Youssef ◽  
Andreas Dörfler ◽  
Gitanjali Kolhatkar ◽  
Alexandre Merlen ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Tip Enhanced Raman Spectroscopy

scholarly journals Nanoplasmonics in High Pressure Environment

Photonics ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 53 ◽  
Author(s):  
Grégory Barbillon
Keyword(s):  
High Pressure ◽  
Surface Plasmon Resonance ◽  
Electric Field ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Plasmonic Nanostructures ◽  
Resonance Shift ◽  
High Pressure Environment

An explosion in the interest for nanoplasmonics has occurred in order to realize optical devices, biosensors, and photovoltaic devices. The plasmonic nanostructures are used for enhancing and confining the electric field. In the specific case of biosensing, this electric field confinement can induce the enhancement of the Raman signal of different molecules, or the localized surface plasmon resonance shift after the detection of analytes on plasmonic nanostructures. A major part of studies concerning to plasmonic modes and their application to sensing of analytes is realized in ambient environment. However, over the past decade, an emerging subject of nanoplasmonics has appeared, which is nanoplasmonics in high pressure environment. In last five years (2015–2020), the latest advances in this emerging field and its application to sensing were carried out. This short review is focused on the pressure effect on localized surface plasmon resonance of gold nanosystems, the supercrystal formation of plasmonic nanoparticles stimulated by high pressure, and the detection of molecules and phase transitions with plasmonic nanostructures in high pressure environment.

Tuning Localized Surface Plasmon Resonance in Scanning Near-Field Optical Microscopy Probes

ACS Nano ◽  
2015 ◽  
Vol 9 (6) ◽  
pp. 6297-6304 ◽  
Author(s):  
Thiago L. Vasconcelos ◽  
Bráulio S. Archanjo ◽  
Benjamin Fragneaud ◽  
Bruno S. Oliveira ◽  
Juha Riikonen ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Optical Microscopy ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Near Field ◽  
Localized Surface Plasmon

scholarly journals High Near-Field Enhancement in Plasmonic Coupled Nanostructure for Spaser Application

2021 ◽  
Author(s):  
SAQIB JAMIL ◽  
Adnan Daud Khan ◽  
Javed Iqbal ◽  
Waqas Farooq
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Near Field ◽  
Field Enhancement ◽  
Surface Enhanced Raman Spectroscopy ◽  
Localized Surface Plasmon ◽  
Film Substrate ◽  
Gain Media

Abstract We theoretically demonstrated a kind of plasmon coupled elliptical nanostructure to achieve a vast range of applications based on nanolaser or spaser with high intensity. To overcome the ohmic losses, the plasmon ellipse is composed of the gold film substrate with a gain media. A simple ellipse has been chosen from which variety of dimer configurations have been formed by symmetry alteration technique which are then tested for different light polarizations and gap variations. The proposed model supports localized surface plasmon resonance mode (LSPR). Moreover, the localized surface plasmon resonance (LSPR) property of the proposed nanostructure is numerically analysed by the finite-element method (FEM) and the results shows that the electric field intensity (EFI) can be amplified to a large values by symmetry breaking in the elliptical nanostructure. Various plasmon modes can be excited by selecting the appropriate gain media. In addition to this, a compact tunable multi-wavelength nanolaser (spaser) can be developed by using this model. Giant near field enhancement (NFE) and high LSPR enable this structure to be promising for spaser applications such as surface enhanced Raman spectroscopy, sensing, lithography, imaging, dental applications and much more.

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