Sensors based on hybrid structures of Graphene/Nanocrystals
As of today, in the field of sensing, the most significant role is played by nanostructured materials and hybrid structures created based on these materials. This is because, due to the high surface area-to-volume ratio and the ability to vary the shapes of such materials, it is possible to alter the physical properties and enhance the performance of sensors based on these materials.
Fluorescent imaging of hybrid structures based on CdSe nanoplates
The use of a hybrid system based on graphene and semiconductor quantum dots is the most popular solution for achieving high efficiency in converting absorbed energy into a useful signal for end photoelectric devices.
The outstanding photophysical and photoelectric properties of the hybrid graphene/quantum dots structure allow the creation of multiparametric sensors. Replacing traditional quantum dots with nanoplates enhances the response of such a system, as the electron energy structure in two-dimensional nanoplates resembles quantum wells. Therefore, the optical characteristics of nanoplates, determining their value for fundamental research and practical applications, directly depend on the thickness of the plates.
The objectives of this direction are:
1. Creation and investigation of the dependence of the photophysical and photoelectric properties of a photochemical sensor based on graphene nanofibers and triple quantum dots or nanoplates for detecting nitrogen-containing gases and volatile markers of certain diseases.
2. Study of the fluorescent response of cadmium selenide nanoplates in hybrid structures based on graphene in the presence of volatile organic compounds.
3. Manufacture and identification of dependencies of the photophysical and photoelectric properties of a biosensor based on nanostructured carbon, triple quantum dots, and phthalocyanines /tetrapyrazinporyrazines for the preventive detection of cardiovascular diseases.
4. Creation of Arduino-based counters and development of software (Python/C++) for working with sensors.