Research on the enhancement of signal-to-noise ratio of light-addressable potentiometric sensor by optical focusing

Dong Chen , Shi-bin Liu , Shi-min Yin , Jin-tao Liang

Optoelectronics Letters ›› : 27 -30.

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Optoelectronics Letters ›› : 27 -30. DOI: 10.1007/s11801-016-5206-3
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Research on the enhancement of signal-to-noise ratio of light-addressable potentiometric sensor by optical focusing

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Abstract

For enhancing the response of light-addressable potentiometric sensor (LAPS) and further improving its signal- to-noise ratio (SNR), an optical focusing method is adopted. Experimental research and theoretical analysis reveal that the magnitude of responsive signal is increased by optical focusing, and the SNR is improved remarkably. These research results indicate that the optical focusing is an effective approach for improving SNR of LAPS.

Keywords

Alternate Current / Shot Noise / Depletion Region / Light Spot / Physica Status Solidus

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Dong Chen, Shi-bin Liu, Shi-min Yin, Jin-tao Liang. Research on the enhancement of signal-to-noise ratio of light-addressable potentiometric sensor by optical focusing. Optoelectronics Letters 27-30 DOI:10.1007/s11801-016-5206-3

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