alexa Silicon nanowire field-effect-transistor based biosensors: from sensitive to ultra-sensitive.
Engineering

Engineering

Biosensors Journal

Author(s): Shen MY, Li BR, Li YK

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Abstract Silicon nanowire field effect transistors (SiNW-FETs) have shown great promise as biosensors in highly sensitive, selective, real-time and label-free measurements. While applications of SiNW-FETs for detection of biological species have been described in several publications, less attention has been devoted to summarize the conjugating methods involved in linking organic bio-receptors with the inorganic transducer and the strategies of improving the sensitivity of devices. This article attempts to focus on summarizing the various organic immobilization approaches and discussing various sensitivity improving strategies, that include (I) reducing non-specific binding, (II) alignment of the probes, (III) enhancing signals by charge reporter, (IV) novel architecture structures, and (V) sensing in the sub-threshold regime. Copyright © 2014 Elsevier B.V. All rights reserved. This article was published in Biosens Bioelectron and referenced in Biosensors Journal

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