نتایج جستجو برای: surface plasmon resonance spr

تعداد نتایج: 836457  

Journal: :Optics express 2008
Kaiqun Lin Yonghua Lu Junxue Chen Rongsheng Zheng Pei Wang Hai Ming

High sensitivity is obtained at larger resonant incident angle if negative diffraction order of metallic grating is used to excite the surface plasmon. A highly sensitive grating-based surface plasmon resonance (SPR) sensor is designed for the hydrogen detection. A thin palladium (Pd) film deposited on the grating surface is used as transducer. The influences of grating period and the thickness...

Journal: :journal of nanostructures 2015
m. ghorbanpour

the silver spr chip was modified by alkaline-silane condensation with aminopropyltriethoxysilane (aptes) in naoh aqueous solution at different times. silver sputtered slides coated with aptes were immersed in naoh solution, enabling us to produce silver surfaces homogeneously covered with aptes. the surface properties of grafted aptes on sputtered silver surface as a occasion of time were studi...

2016
R. V. Khrystosenko

The influence of the sensitive element fabrication technology and noise performance of surface plasmon resonance (SPR) immunosensor on sensitivity and stability of operation inherent to the “Plasmon” series instrument has been investigated to improve reliability of diagnosis and treatment of the Epstein–Barr herpes virus disease. To minimize the effect of the temperature change induced noise, c...

2017
Marlia Morsin Muhamad Mat Salleh Akrajas Ali Umar Mohd Zainizan Sahdan

Localized surface plasmon resonance (LSPR) properties of metallic nanostructures, such as gold, are very sensitive to the dielectric environment of the material, which can simply be adjusted by changing its shape and size through modification of the synthesizing process. Thus, these unique properties are very promising, particularly for the detection of various types of chemicals, for example b...

2016
Aditi Chopra Sudipta Sarkar Pal Randhir Bhatnagar Anna J. Tudos Richard B. M. Schasfoort

In the present study, a surface plasmon resonance (SPR) based fiber optic sensor is proposed. The extreme sensitivity of SPR modes on the surrounding refractive index has been exploited to make the sensor. The optical fiber is coated with gold film which supports the propagation of surface plasmons. The SPR dip in the transmission spectrum is observed and its shift with varying refractive indic...

Journal: :Annual review of physical chemistry 2000
J M Brockman B P Nelson R M Corn

The surface-sensitive optical technique of surface plasmon resonance (SPR) imaging is used to characterize ultrathin organic and biopolymer films at metal interfaces in a spatially resolved manner. Because of its high surface sensitivity and its ability to measure in real time the interaction of unlabeled biological molecules with arrays of surface-bound species, SPR imaging has the potential t...

2015
Chunfang Wu Xue Zhou Jie Wei

The surface plasmon resonance (SPR) of silver nanoparticles can be tuned throughout the visible and near-infrared region by their shape and size. Considering SPR applications, an easy and controllable method for preparing the silver nanocrystals with defined shape and size, is necessary. In this work, the triangular silver nanoplates were synthesized by reducing Ag(+) ions with ascorbic acid in...

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