Development of a label-free graphene hall effect biosensor

Abstract

Graphene has recently motivated various research groups due to its peculiar properties and the research on this novel nanomaterial is growing rapidly. Electric transport properties of graphene make it a promising candidate for future nanoelectronics applications. Moreover, thermal, mechanical and optical properties are other powerful indications of its capability to open a new era in nanoscale developments in a variety of fields. Carbon materials have already been demonstrated to be promising in biomedical applications and graphene, as a building block for graphitic materials, holds a unique place in terms of biocompatibility; offering great opportunities due to its high surface to volume ratio and charge transport capability. Being electrically conductive and having ultrahigh mobility offers a great deal in electronic application developments. Therefore, in this study, the promise of graphene to build a biosensing platform has been investigated through developing a biosensor that exploits incredible electric transport properties of graphene along with its high sensitive and selective biocompatible structure. In order to achieve such a purpose, a labelfree biosensing platform has been developed by employing Hall effect principle. This thesis presents all the details to form a biosensing platform along with the promising results that have been obtained.