4 documents found, page 1 of 1
The impact of physiological buffer solutions on zinc oxide nanostructures: zinc...
Rodrigues, J.; Pereira, S. O.; Zanoni, J.; Falcão, B. P.; Santos, N. F.; Moura, J. P.; Soares, M. R.; Rino, L.; Costa, F. M.; Monteiro, T.Zinc oxide (ZnO) nanostructures have been widely used in biosensor applications. However, little attention has been given to the interaction of ZnO structures with physiological buffer solutions. In the present work, it is shown that the use of buffers containing phosphate ions leads to the modification of the ZnO tetrapodal micro/nanostructures when immersed in such solutions for several hours, even at the phy...
Label-free nanoscale ZnO tetrapod-based transducers for tetracycline detection
Brás, M.; Zanoni, J.; Falcão, B. P.; Leitão, J. P.; Costa, F. M.; Monteiro, T.; Pereira, S. O.; Rodrigues, J.Antibiotic pollution of freshwaters and even food products has become an important concern worldwide. Hence, it is of utmost importance to develop cost-effective and reliable devices that can provide information on the presence of such contaminants to the general population. In the present work, zinc oxide (ZnO) nanotetrapods (NTP) produced via a high yield laser processing approach were used as transducers in ...
Electrochemical and photoluminescence response of laser-induced graphene/electr...
Santos, N. F.; Rodrigues, J.; Pereira, S. O.; Fernandes, A. J. S.; Monteiro, T.; Costa, F. M.The inherent scalability, low production cost and mechanical flexibility of laser-induced graphene (LIG) combined with its high electrical conductivity, hierarchical porosity and large surface area are appealing characteristics for many applications. Still, other materials can be combined with LIG to provide added functionalities and enhanced performance. This work exploits the most adequate electrodeposition p...
Insights on luminescence quenching of ZnO tetrapods in the detection of hCG
Rodrigues, J.; Pereira, S. O.; Santos, N. F.; Rodrigues, C.; Costa, F. M.; Monteiro, T.Metal oxide semiconductors, and particularly zinc oxide (ZnO), are amongst the most investigated materials to be applied as transducer elements in biosensing devices due to properties as biochemical stability, biocompatibility and functionalisation simplicity. In the present work, ZnO nanotetrapods were produced by the laser-assisted flow deposition technique to be used as transducers in a photoluminescence (PL...