Authors
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Palumbo, M. ; Pearson, C. ; Nagel, J. ; Petty, M. C.
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Title
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A single chip multi-channel surface plasmon resonance imaging system
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Date
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03.06.2003
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Number
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10997
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Abstract
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A single chip, multi-channel surface plasmon resonance (SPR) imaging system has been developed. The equipment has no moving parts and uses a single sensor chip on which multiple channels can be incorporated. A light emitting diode is used as a photon source while a CCD camera forms the detector. The optical configuration has been designed to achieve a uniform illumination of the sample over a fixed area with a range of incident angles. A calibration test using sucrose solutions shows that the sensitivity of the equipment is 4.3×10-4 refractive index units per pixel line-pair. The use of the system for simultaneous interrogation of different polyelectrolyte thin films, formed by the electrostatic layer-by-layer deposition method, is demonstrated. A reversible pH-dependent response for these organic layers is also reported.
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Publisher
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Sensors and Actuators / B
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Wikidata
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Citation
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Sensors and Actuators / B 90 (2003) 264-270
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DOI
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https://doi.org/10.1016/S0925-4005(03)00041-8
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Tags
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