The redshift of surface plasmon resonance of colloidal gold nanoparticles induced by pressure with diamond anvil cell

2014 ◽  
Vol 115 (22) ◽  
pp. 223503 ◽  
Author(s):  
Yongjun Bao ◽  
Bin Zhao ◽  
Dongjie Hou ◽  
Junsong Liu ◽  
Fei Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Colloidal Gold ◽  
Diamond Anvil Cell ◽  
Colloidal Gold Nanoparticles ◽  
Diamond Anvil

Tuning surface plasmon resonance by the plastic deformation of Au nanoparticles within a diamond anvil cell

2015 ◽  
Vol 107 (20) ◽  
pp. 201909 ◽  
Author(s):  
Yongjun Bao ◽  
Bin Zhao ◽  
Xinyu Tang ◽  
Dongjie Hou ◽  
Jian Cai ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Diamond Anvil Cell ◽  
Au Nanoparticles ◽  
Diamond Anvil

ENHANCEMENT OF SURFACE PLASMON RESONANCE USING COLLOIDAL GOLD NANOPARTICLES EMBEDDED IN A SILICA LAYER

NANO ◽  
2011 ◽  
Vol 06 (05) ◽  
pp. 461-468 ◽  
Author(s):  
JAEYEON JUNG ◽  
JAEYOO CHOI ◽  
JIE CHENG ◽  
MINSUNG PARK ◽  
SEONGIN CHO ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Specific Antigen ◽  
Gold Surface ◽  
Silica Layer ◽  
Nanoparticle Layer ◽  
Colloidal Gold Nanoparticles ◽  
Enhanced Surface

This paper presents a strategy for the signal enhancement of surface plasmon resonance biosensors using colloidal gold nanoparticles and a silica layer. We describe the method for the deposition of a silica-stabilized gold nanoparticle layer on a gold film, namely an enhanced surface plasmon resonance chip. This chip shows significant changes in its surface plasmon resonance signals when biomolecules are attached to its surface as compared to a normal gold surface. These characteristics are closely related to the surface plasmon resonance effect as determined using prostate-specific antigen. The detection limit of the enhanced surface plasmon resonance chip is determined to be 0.01 ng/mL for a prostate-specific antigen immunoassay. The use of an enhanced surface plasmon resonance chip makes it possible to enhance signals 1000-fold compared to the signals obtained by conventional surface plasmon resonance sensing. The enhancement of the surface plasmon resonance spectral shift results from the coupling of the surface and particle plasmons through the application of a silica-stabilized gold nanoparticle layer on the gold surface.

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