ZnO materials and surface tailoring for biosensing

Insights on luminescence quenching of ZnO tetrapods in the detection of hCG

“…The decrease in the relative ACCEPTED MANUSCRIPT -This is the author's peer reviewed, accepted manuscript. Original DOI: https://doi.org/10.1016/j.apsusc.2020.146813 16 intensity of the excitation features in the high-energy region, when compared to the asgrown and deposited samples, supports the assumption that the recombination from the bulk-related states is reduced in this case. By adding the analyte to the sensor structure, the maximum of the excitation spectrum is placed again at the same energy position measured for the as-grown and deposited samples.…”

“…146813 3 Indeed, the structure of the transducer is extremely important, since it has a high influence on the amount of bioreceptor that is possible to immobilize. This element that confers specificity to the sensor will determine the number of available analyte binding sites [15,16]. Thus, the selection of a suitable transducer is crucial for the development of an adequate biosensor.…”

Photoluminescence investigations of ZnO micro/nanostructures

“…Therefore, the transducer is one of the key elements of a biosensor and defines the methodology for the sensing measurements [159]. ZnO has been used as transducer platform in different types of sensors [159,[219][220][221][222][223][224]. The ability to produce ZnO nanostructures with various sizes, shapes and properties has a profound influence on the immobilization of biomolecules [159].…”

Review—Nanostructured Materials-Based Nanosensors

“…10 Zinc oxides.-Due to their excellent electron transfer rate, ZnO nanostructures are able to evoke the hidden electrochemical ability of biomolecules, and facilitate their direct electrochemistry according to their excellent electron transfer rate. 83 High surface to volume ratio, non-toxic, low cost, chemical stability, eco-friendly and high electron communication features than their bulk material are the main advantages of ZnO nanostructures. 84 For instance, ZnO is a proper candidate for potential applications in gas sensing due to its thermal/chemical stability, good oxidation resistance, great biocompatibility and high conductivity.…”