公开(公告)号：US20120002203A1

公开(公告)日：2012-01-05

申请号：US13255612

申请日：2010-03-08

申请人： Filippo Romanato ,  Gianluca Ruffato ,  Chee Cheong Wong ,  Lee Kwang Hong ,  Husen Kartasamita Kang

发明人： Filippo Romanato ,  Gianluca Ruffato ,  Chee Cheong Wong ,  Lee Kwang Hong ,  Husen Kartasamita Kang

IPC分类号： G01N21/55

CPC分类号： G01N21/553

摘要： A method and a system for the enhancement of the sensitivity in surface plasmon resonance (SPR) sensors based metallic grating by exploiting the conical configuration is presented. We consider the propagation of surface plasmon polaritons (SPPs) excited by light from the visible to infrared spectrum range, incident on a plasmonic grating at different directions by varying both the zenith and azimuthal angles. For specific azimuthal angles, SPPs propagate in the grating plane perpendicular to the incident light momentum. This is the condition that allows increasing the number of different excited SPPs modes largely. We exploit this effect to increase the sensor sensitivity with the change of refractive index of thin film on the plasmonic grating surface. Polarization effects also contribute to a further modes enhancement and increase the sensitivity. A scheme for a lab-on-chip implementation of a system that allows a parallel detection in microfluidic channels has been shown.

摘要翻译： 提出了一种利用锥形配置提高表面等离子体共振（SPR）传感器金属光栅灵敏度的方法和系统。 我们考虑由从可见光到红外光谱范围的光激发的表面等离子体激元（SPPs）的传播，通过改变天顶和方位角在不同方向入射到等离子体激元光栅上。 对于特定的方位角，SPP在与入射光动量垂直的光栅平面中传播。 这是允许增加不同激发的SPP模式的数量的条件。 我们利用这种效应，随着等离子体激元光栅表面上薄膜的折射率变化，增加了传感器的灵敏度。 极化效应还有助于进一步增强模式并提高灵敏度。 已经显示了允许在微流体通道中并行检测的系统的片上实验室的方案。

公开(公告)号：US09110021B2

公开(公告)日：2015-08-18

申请号：US13255612

申请日：2010-03-08

申请人： Filippo Romanato ,  Gianluca Ruffato ,  Chee Cheong Wong ,  Lee Kwang Hong ,  Husen Kartasamita Kang

发明人： Filippo Romanato ,  Gianluca Ruffato ,  Chee Cheong Wong ,  Lee Kwang Hong ,  Husen Kartasamita Kang

IPC分类号： G01N21/552

CPC分类号： G01N21/553

摘要： A method and a system for the enhancement of the sensitivity in surface plasmon resonance (SPR) sensors based metallic grating by exploiting the conical configuration is presented. We consider the propagation of surface plasmon polaritons (SPPs) excited by light from the visible to infrared spectrum range, incident on a plasmonic grating at different directions by varying both the zenith and azimuthal angles. For specific azimuthal angles, SPPs propagate in the grating plane perpendicular to the incident light momentum. This is the condition that allows increasing the number of different excited SPPs modes largely. We exploit this effect to increase the sensor sensitivity with the change of refractive index of thin film on the plasmonic grating surface. Polarization effects also contribute to a further modes enhancement and increase the sensitivity. A scheme for a lab-on-chip implementation of a system that allows a parallel detection in microfluidic channels has been shown.

摘要翻译： 提出了一种利用锥形配置提高表面等离子体共振（SPR）传感器金属光栅灵敏度的方法和系统。 我们考虑由从可见光到红外光谱范围的光激发的表面等离子体激元（SPPs）的传播，通过改变天顶和方位角在不同方向入射到等离子体激元光栅上。 对于特定的方位角，SPP在与入射光动量垂直的光栅平面中传播。 这是允许增加不同激发的SPP模式的数量的条件。 我们利用这种效应，随着等离子体激元光栅表面上薄膜的折射率变化，增加了传感器的灵敏度。 极化效应还有助于进一步增强模式并提高灵敏度。 已经显示了允许在微流体通道中并行检测的系统的片上实验室的方案。