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Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems
Published on: July 4, 2011
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Fluorescent Biosensors Based on Silicon Nanowires
Antonio Alessio Leonardi1,2,3,4, Maria José Lo Faro1,3, Barbara Fazio2,4
1Dipartimento di Fisica e Astronomia "Ettore Majorana", Università degli Studi di Catania, Via S. Sofia 64, 95123 Catania, Italy.
Nanomaterials (Basel, Switzerland)
|November 27, 2021
Summary
Silicon nanowires (Si NWs) offer a promising, commercially viable platform for advanced biosensing. This review explores fluorescent sensors utilizing Si NWs, detailing their advantages and limitations for various applications.
Area of Science:
- Materials Science
- Nanotechnology
- Biomedical Engineering
Background:
- Nanostructures offer enhanced sensitivity and selectivity for biosensing.
- Industrial transfer of nanosensors is often hindered by material and synthesis complexities.
- Silicon nanowires (Si NWs) present a viable solution due to their compatibility with silicon fabrication.
Purpose of the Study:
- To provide an overview of fluorescent sensors based on Si NWs.
- To analyze existing literature on Si NW fluorescent sensor strategies.
- To highlight the advantages and disadvantages of different Si NW fluorescent sensing approaches.
Main Methods:
- Literature review of fluorescent sensors employing Si NWs.
- Analysis of various strategies including Si NWs as substrates, quenchers, and direct fluorescent sensors.
- Evaluation of transduction methods, focusing on fluorescence.
Main Results:
- Si NWs can be effectively used as substrates for fluorophores.
- NWs can function as quenchers in stem-loop configurations.
- Direct fluorescent sensing using Si NWs is an emerging strategy.
Conclusions:
- Fluorescent Si NW sensors offer a balance of performance and commercial viability.
- Different strategies present unique advantages and drawbacks.
- Further research can optimize Si NWs for diverse biosensing applications.
