Nanoscale Optical Biosensor:  Short Range Distance Dependence of the Localized Surface Plasmon Resonance of Noble Metal Nanoparticles

2004 ◽  
Vol 108 (22) ◽  
pp. 6961-6968 ◽  
Author(s):  
Amanda J. Haes ◽  
Shengli Zou ◽  
George C. Schatz ◽  
Richard P. Van Duyne
Keyword(s):  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Short Range ◽  
Optical Biosensor ◽  
Noble Metal Nanoparticles ◽  
Localized Surface Plasmon ◽  
Distance Dependence

Probing the Long Range Distance Dependence of Noble Metal Nanoparticles

2003 ◽  
Vol 789 ◽  
Author(s):  
Amanda J. Haes ◽  
Richard P. Van Duyne
Keyword(s):  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Long Range ◽  
Noble Metal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Noble Metal Nanoparticles ◽  
Localized Surface Plasmon ◽  
Distance Dependence

ABSTRACTThe localized surface plasmon resonance (LSPR) of noble metal nanoparticles has recently been the subject of extensive studies. Previously, it has been demonstrated that Ag nanotriangles that have been synthesized using nanosphere lithography (NSL) behave as extremely sensitive and selective chemical and biological sensors. The present work reveals information regarding the long range distance dependence of the localized surface plasmon resonance (LSPR) of silver and gold nanoparticles. Multilayer adsorbates based on the interaction of HOOC(CH2)10SH and Cu2+ were assembled onto surface-confined nanoparticles. Measurement of the LSPR extinction peak shift versus number of layers and adsorbate thickness is non-linear and has a sensing range that is dependent on the composition, shape, in-plane width, and out-of-plane height of the nanoparticles. Theoretical modeling confirms and offers a mathematical interpretation of these results. These experiments indicate that the LSPR sensing capabilities of noble metal nanoparticles can be tuned to match the size of biological and chemical analytes by adjusting the aforementioned properties. The optimization of the LSPR nanosensor for a specific analyte will improve an already sensitive nanoparticle-based sensor.

Interpretation of spectra responses of metal nanoparticles to analyte based on localized surface plasmon resonance

2011 ◽  
Vol 225 (4) ◽  
pp. 171-175
Author(s):  
Wenying Ma ◽  
Fangrong Hu ◽  
Huan Yang ◽  
Weimin Wang
Keyword(s):  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Structure Model ◽  
Biochemical Sensors ◽  
Sensing Applications ◽  
Receptor Layer

Metal nanoparticles have potential utilities in biochemical sensing applications owing to their localized surface plasmon resonance characteristics. To facilitate the application of localized surface plasmon resonance sensors, a simple and effective interpretation of spectra responses of metal nanoparticles to analyte was developed in this paper. Based on a bilayer structure model and a trilayer structure model, a general relationship between the peak wavelength changes of extinction spectra and the thickness of the receptor layer as well as the analyte layer was established. Both analytical analysis and chloroform vapor test experiment demonstrate that the sensing performance is greatly dependent on the receptor thickness, and a thinner receptor layer will induce a greater sensitivity. These insights can be used as guidelines in fabricating highly sensitive localized surface plasmon resonance-based biochemical sensors.

The effect of graphene on surface plasmon resonance of metal nanoparticles

2018 ◽  
Vol 20 (38) ◽  
pp. 25078-25084 ◽  
Author(s):  
Haiyan Nan ◽  
Zhirong Chen ◽  
Jie Jiang ◽  
JiaQi Li ◽  
Weiwei Zhao ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Metal Nanoparticle ◽  
Localized Surface Plasmon ◽  
Au Nps ◽  
Hybrid Schemes ◽  
Graphene Layers

Two transparent graphene–metal nanoparticle (NP) hybrid schemes, namely Au NPs covered by graphene layers and Au NPs encapsulated by graphene layers, are presented and the effect of graphene on the localized surface plasmon resonance of metal NPs is systematically investigated.

Localized Surface Plasmon Resonance Biosensor Using Ag Nanostructured Films Fabricated by a Reduction Method

2006 ◽  
Vol 915 ◽  
Author(s):  
Tomofumi Arai ◽  
Penmetcha K. R. Kumar ◽  
Koichi Awazu ◽  
Junji Tominaga
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Surrounding Medium ◽  
Optical Biosensor ◽  
Localized Surface Plasmon ◽  
Nanostructured Film ◽  
Nanostructured Films ◽  
Binding Event

AbstractIn this paper, an optical biosensor based on the localized surface plasmon resonance (LSPR) of Ag nanostructured films is proposed and demonstrated. The Ag nanostructured films, which are fabricated by the reduction of AgOx thin films, exhibit a strong LSPR at wavelengths around 370 nm in an air environment. The reflectance spectra of the Ag nanostructured film represent that the shift in the LSPR wavelength follows a linear dependence on the refractive index of the surrounding medium. By varying the concentration of streptavidin solution, we demonstrate that the Ag nanostructured films functionalized with thiol and biotin molecules can sensitively detect a binding event between biotin and streptavidin molecules.

A novel label-free multi-throughput optical biosensor based on localized surface plasmon resonance

2009 ◽  
Vol 24 (7) ◽  
pp. 2255-2259 ◽  
Author(s):  
Haowen Huang ◽  
Chaocai He ◽  
Yunlong Zeng ◽  
Xiaodong Xia ◽  
Xianyong Yu ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Optical Biosensor ◽  
Localized Surface Plasmon ◽  
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