Abstract
MicroRNAs (miRNAs) have been regarded as biomarkers for early-stage diagnosis of cancer. Due to their short length, low abundance, and very similar sequences, an attractive approach that is ultrasensitive and label-free is extremely demanded. Here we report the design of a novel semiconducting silicon nanowire field-effect transistor (SiNW-FET) biosensor array for ultrasensitive label-free and real-time detection of miR-21. Optical lithography and anisotropic self-stop etching were employed to guarantee low cost batch production for SiNWs. The working conditions of the nanosensor were firstly optimized through pH sensing experiment. This SiNW-FET nanosensor under optimal conditions revealed ultrahigh sensitivity for repaid and reliable detection of 1 fM miR-21 and high specificity for single-nucleotide polymorphism discrimination.
| Original language | English |
|---|---|
| Title of host publication | 2013 Transducers and Eurosensors XXVII |
| Subtitle of host publication | The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 |
| Pages | 2439-2442 |
| Number of pages | 4 |
| DOIs | |
| State | Published - 2013 |
| Externally published | Yes |
| Event | 2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 - Barcelona, Spain Duration: 16 Jun 2013 → 20 Jun 2013 |
Publication series
| Name | 2013 Transducers and Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 |
|---|
Conference
| Conference | 2013 17th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2013 |
|---|---|
| Country/Territory | Spain |
| City | Barcelona |
| Period | 16/06/13 → 20/06/13 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- SiNWs-FET
- label-free
- miRNA
- ultrasensitive
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