Direct and Catalyst-Free Growth of Vertically-Stacked Graphene-Based Structures for Enhanced Drug Sensing
| Autor: | Ioulia Tzouvadaki, Diana Davila Pineda, Sandro Carrara, Nima Aliakbarinodehi, Giovanni De Micheli |
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| Rok vydání: | 2019 |
| Předmět: |
Nanostructure
Materials science Silicon electrochemical sensor chemistry.chemical_element Nanotechnology 02 engineering and technology Substrate (electronics) 010402 general chemistry Electrochemistry etoposide 01 natural sciences vertically-oriented graphene law.invention growth conditions law Honeycomb sensing electrodes Sheet resistance drug monitoring Graphene electrode 021001 nanoscience & nanotechnology 0104 chemical sciences nanowalls chemistry Electrode dopamine delivery 0210 nano-technology |
| Zdroj: | ISCAS |
| Popis: | In this work, a complete study is carried out for the optimised, direct and catalyst-free growth of vertically-stacked graphene-based structures targeting at improved performance drug monitoring. The nanostructures, ultimately forming a honeycomb network on the substrate, are fabricated by the implementation and comparison of seven combinations of growth conditions on both Si and SiO 2 substrates. Pivotal features characterising the nanostructures i.e. layer thickness, sheet resistance, surface morphology and sensing performance are considered for verifying the quality and properties of the resulted graphene-based electrodes. The graphene-based sensing platform demonstrating optimum structural and electrochemical performance is finally implemented for drug screening showing high efficiency for the detection of a chemotherapeutic compound at low concentrations. |
| Databáze: | OpenAIRE |
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