Quantum conductance investigation on carbon nanotube–based antibiotic sensor
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Nanostructured carbon material (NSCM) based chemiresistive sensors are popular for sensing different analytes because of their high sensitivity, low cost, and simple construction compared with the conventional sensors. In this paper, the carbon strand (bulk) containing carbon nanostructured materials is fabricated through high-density polyethylene (HDPE). HDPE has been used as a carbon source and carbon strand is grown by pulsed arc discharge method between two hollow metallic rods in the presence of the HDPE. Later on, these electrodes have been used as contacts in the proposed structure. The analyzed structure as a quasi-metallic multi-walled carbon nanotube (MWCNT) based chemiresistive sensor is considered for electrochemical sensing of amoxicillin, penicillin-G, and ampicillin antibiotics. Therefore, the MWCNT quantum conductance as a modeling platform is employed. Finally, current-voltage (I-V) characteristics of samples are investigated in the presence of antibiotic materials for different conditions. To this end, the proposed model is compared with experimental data and favorable agreement is reported.
KeywordsQuantum conductance Transmission probability I-V characteristic Quasi-metallic MWCNT Chemiresistive sensors Antibiotic
The authors thank Miss Elnaz Khoramak and Mr. Reza Alizadeh at the Urmia University for their technical support.
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