Nanostructured sensor platform based on organic polymer conjugated to metallic nanoparticle for the impedimetric detection of SARS-CoV-2 at various stages of viral infection.

The projection of new biosensing technologies for genetic identification of SARS-COV-2 is essential in the face of a pandemic scenario. For this reason, the current research aims to develop a label-free flexible biodevice applicable to COVID-19. A nanostructured platform made of polypyrrole (PPy) and gold nanoparticles (GNP) was designed for interfacing the electrochemical signal in miniaturized electrodes of tin-doped indium oxide (ITO).

Label-free nanostructured biosensor for Schistosoma mansoni detection in complex biological fluids.

Schistosomiasis is a neglected tropical disease with a worldwide prevalence. Neuroschistosomiasis is the most severe presentation of the disease and affects the central nervous system. In this work, Schistosoma mansoni detection was based on self-assembled layers of 3-mercaptopropyltrimethoxysilane (MPTS) and electrosynthesized gold nanoparticles (AuNPs).

Impedimetric nanostructured genosensor for detection of schistosomiasis in cerebrospinal fluid and serum samples.

Schistosomiasis is a neglected disease closely related to the low levels of social development and a serious public health problem. In this work, we performed an electrochemical detection of Schistosoma mansoni DNA with a self-assembled monolayer of mercaptobenzoic acid (MBA) immobilizing nanostructures composed of gold nanoparticles (AuNPs) and magnetite nanoparticles (FeO_NPs). Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used to monitor the hybridization process.