A Functionalized Paper Strip-Based Platform for Rapid Detection of Anticancer Drug Concentrations
| Autor: | Gaewyn Ellison, Goran Stojanovic, Mitar Simic, Milan Radovanovic, Hani Al-Salami, Vladimir V. Srdić, Saša Vukmirović, Sanja Panić, Tijana Kojic |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Article Subject chemistry.chemical_element 02 engineering and technology Conductivity 01 natural sciences law.invention Test card Electrical resistance and conductance law T1-995 Electrical and Electronic Engineering Instrumentation Electrical conductor FOIL method Technology (General) business.industry 010401 analytical chemistry 021001 nanoscience & nanotechnology Copper 0104 chemical sciences chemistry Control and Systems Engineering Electrical network Optoelectronics 0210 nano-technology business Layer (electronics) |
| Zdroj: | Journal of Sensors, Vol 2021 (2021) Journal of Sensors |
| ISSN: | 1687-7268 |
| Popis: | This article presents a compact, low-cost, robust, and flexible test platform for determining the concentration of drugs in fluids. This device is based on a PVC foil card containing copper conductive foils in which disposable paper test strips are inserted. The paper test strips are overlaid with deposition of multiwalled carbon nanotubes (MWCNTs) acting as a sensing layer. When a paper test strip is inserted into the test card, the conductive path between two copper lines is established. A drop of test fluid on the sensing MWCNT layer changes the conductivity in a concentration-dependent manner, enabling calculation of the drug concentration after measurement of the electrical resistance at the copper terminals. An equivalent electrical circuit was also proposed to model the response of the fabricated sensor. It was shown that model parameters are dependent on the concentration of the cytostatic drug methotrexate. Additionally, the fabricated sensor demonstrated the ability to differentiate the same concentration of methotrexate and cyclophosphamide. The complete readout electronics and polynomial transfer function for calculating drug concentrations were also developed and are presented. |
| Databáze: | OpenAIRE |
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