Carbon nanotube-Yttrium iron garnet (CNT-YIG) nanohybrid has been successfully synthesized using chemical vapor deposition (CVD) with yttrium iron garnet (YIG) nanopowders as catalyst, ethanol as carbon stock, and argon as carrier gas. Carbon nanotube (CNT) was observed to have grown from the YIG nanopowders with bamboo-like structures of CNT at a synthesis temperature of 900 °C. FESEM and RAMAN characterization indicated that the CNT-YIG nanohybrid exhibited the growth of bamboo-like CNT with high graphitization. Further analysis of electrical properties showed that the CNT-YIG nanohybrid has exhibited conductivity due to the CNT growth. The nanohybrid in the form of powders was then mixed with an organic vehicle to produce thick film paste and screen-printed onto a substrate as the working material for patch antenna application. Initial measurements using VNA indicated that CNT-YIG nanohybrid gave significant results regarding return loss and bandwidth, proving that the materials could have great potential to enhance patch antenna performance due to their combined electrical and magnetic properties.
The escalating prevalence of cardiovascular diseases globally call for a low-cost monitoring technology for an immediate intervene and diagnoses. Advance multiplexed biosensors reinforced by graphene derivatives marks a significant progression in the field of cardiovascular health assessments. The graphene derived biosensors are designed specifically for fast detection of cardiac biomarkers with high precision to evaluate cardiovascular health. The graphene biocompatibility and fast signal transduction electronic properties provide an ideal foundation for the multiplexed technology. Despite the substantial potential of this multiplexed technologies, there remains a pressing need for further research and development to fully harness their capabilities in clinical environments. This study underscores the critical role of these biosensors in point of care applications and reviews the current landscape of research, highlighting significant progress made in graphene-based transduction and the recent trends in graphene production which give impact on biosensors performance. Key components are discussed include the assessment of vital cardiac biomarkers and the evolution of multiplex biosensing strategies that utilizes graphene nanomaterials. In summary, this review provides a comprehensive overview of the latest advancements in multi-analyte detection for cardiac healthcare. It outlines the key challenges encountered while proposing potential strategies to improve the effectiveness of multiplex biosensing platforms, thereby supporting the advancement of cardiac diagnostics. The potential of multiplexed biosensing technology leads to enhance diagnostic capabilities while reducing healthcare costs represents a significant advancement in cardiovascular healthcare, particularly for point-of-care applications.