scholarly journals Protection of silver and gold LSPR biosensors in corrosive NaCl environment by short alkanethiol molecules; characterized by extinction spectrum, helium ion microscopy and SERS

RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9565-9576 ◽  
Author(s):  
Hazuki Haraguchi ◽  
Natalie Frese ◽  
Armin Gölzhäuser ◽  
Hiroyuki Takei
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Extinction Spectrum ◽  
Localized Surface Plasmon ◽  
Biologically Relevant ◽  
Helium Ion ◽  
Ion Microscopy ◽  
Surface Plasmon Resonance Sensors

We investigated the utility of localized surface plasmon resonance sensors in a biologically relevant environment containing NaCl.

Dielectric domain distribution on Au nanoparticles revealed by localized surface plasmon resonance

2018 ◽  
Vol 6 (44) ◽  
pp. 12038-12044 ◽  
Author(s):  
Yi Luo ◽  
Yadong Zhou ◽  
Shengli Zou ◽  
Jing Zhao
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Au Nanoparticles ◽  
Extinction Spectrum ◽  
Localized Surface Plasmon ◽  
Uniform Layer

The LSPR of Au nanospheres shows almost no shift in the extinction spectrum with attachment of a silica domain but considerable shift with a uniform layer of silica, indicating LSPR can be used to differentiate the segregated/uniform dielectric distribution.

scholarly journals Fabrication of Gold Nanodot Array for the Localized Surface Plasmon Resonance

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Young Min Bae ◽  
Kyeong-Hee Lee ◽  
Jeongwon Yang ◽  
Duchang Heo
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Extinction Spectrum ◽  
Peak Position ◽  
Localized Surface Plasmon ◽  
Large Area ◽  
Nanodot Array ◽  
Extinction Peak

Localized surface plasmon resonance (LSPR) is a promising method for detecting antigen-antibody binding in label-free biosensors. In this study, the fabrication of a LSPR substrate with a gold nanodot array through the lift-off process of an alumina mask is reported. The substrate showed an extinction peak in its extinction spectrum, and the peak position was dependent on the height of the gold nanodot array, and the change of extinction peak with the height could be predicted by the numerical simulation. In addition, the peak position was observed to be red-shifted with the increasing RIU value of the medium surrounding the gold nanodot array. In particular, the peak position in the 10 nm thick gold nanodot array was approximately 710 nm in air, and the sensitivity, defined as the ratio of the shift of peak position to the RIU of the medium, was 323.6 nm/RIU. The fabrication procedure could be applied to fabricate the LSPR substrates with a large area.

Circular dichroism based refractive index sensing using chiral metamaterials

2016 ◽  
Vol 52 (10) ◽  
pp. 2047-2050 ◽  
Author(s):  
Yizhuo He ◽  
Keelan Lawrence ◽  
Whitney Ingram ◽  
Yiping Zhao
Keyword(s):  
Refractive Index ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Chiral Metamaterials ◽  
Refractive Index Sensing ◽  
New Strategy ◽  
Surface Plasmon Resonance Sensors

A new strategy to improve the sensitivity of localized surface plasmon resonance sensors by employing chiral metamaterials is provided.

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