| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
2D Materials: Preparation, Properties, Modeling & Applications
|
| Presentation Title |
Defect Modulation in Laser Induced Graphene Oxide for Advanced Electrochemical Sensing |
| Author(s) |
Pratik Joshi, Jagdish Narayan, Roger Narayan |
| On-Site Speaker (Planned) |
Pratik Joshi |
| Abstract Scope |
Hydrogen peroxide levels are an effective biomarker for diagnosing, cell death or cancerous growth, cardiac aberrations, and genetic/somatic diseases linked to cerebral disorders. We report on the fabrication of excimer laser-induced holey graphene oxide (GO) on conducting Si substrate for electrochemical detection of hydrogen peroxide. The structure of GO was characterized using Raman spectroscopy, SEM, and TEM. The electrical properties were characterized using Hall Effect measurements.Laser annealing of amorphous carbon (a-C) at 0.4 Jcm -2 leads to only surface melting and hence, doesn’t show a good response towards H 2 O 2 sensing. However, Laser annealing at 0.6 Jcm -2 leads to complete melting of amorphous carbon and the GO thus formed demonstrated an excellent sensing behavior. After an Increased number of shots at 0.6 Jcm -2 , there are increased number of cracks and defects leading to improvement in Limit of detection from mM to nM. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Thin Films and Interfaces, Biomaterials |