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| CERBERUS – Farebné centrá v diamante – korelácia medzi atómovou štruktúrou a optoelektronickými vlastnosťami | |
| Colour centres in diamond – correlation between atomic structure and opto-electronic properties | |
| Program: | SRDA |
| Project leader: | Ing. Varga Marian, PhD. |
| Annotation: | The subject of the project is in the field of quantum technologies. We will prepare and characterize optically -activedefects in diamonds and correlate the atomic structures with optical properties to be used for quantum applicati ons.For a wide range of dopant concentrations, we will identify the dopant distributions and study the evolution ofdopants’ configuration in-situ, during thermal annealing, using atomic-resolution microscopy and spectroscopytechniques. We will further study the effect of annealing on the opto-electronic properties by measuringphotoluminescence, photocurrent and electroluminescence for the same set of samples. Graphene transparentelectrodes on a diamond surface will be fabricated for phototransport measurements. Diamond-based hybrid p-i-ndiodes will be prepared for electroluminescence measurements. We will focus on finding a correlation between theatomic structure and the opto-electronic properties of differently doped diamonds. This will contribute to theunderstanding of the fundamental relationship needed to efficiently design optically -active elements for diamondquantum devices. |
| Duration: | 1.9.2024 – 31.12.2027 |
| Pokročilé nízkotrecie povlaky na báze ultratenkých 2D-TMDC pre extrémne podmienky | |
| Lubrication challenge for ultra-thin advanced 2D-TMDC in extreme conditions | |
| Program: | Plán obnovy EÚ |
| Project leader: | Mgr. Kozak Andrii, PhD. |
| Annotation: | The friction, stiction, adhesion, and wear are significantly influenced not only by the chemical and physical properties of the objects in relative motion but also by their shape, dimensions of the interacted area, and environment. Tightening the moving objects to the nanoscale make surface forces dominate the tribological behaviour, and the appearance of additional energy dissipation mechanisms can be observed, which can be critical for the lifetime and reliability of the devices. In turn, the environment renders multi-varied effects on the sliding interface, promoting the structural superlubricity or opposite extremally high friction caused by atomic interactions. The aim of this project is fabrication of low-friction wear-protected surfaces coating system applicable to advanced applications at the nano- and macroscale. Ultrathin coating of new 2D TMDs (PtSe2, MoSe2) will be formed with the aim to investigate their structure evolution during sliding in ambient air, vacuum environment as well as at elevated temperatures. The friction and wear processes on the surface of 2D materials and their interfaces will be systematically analysed by means of nanoscale and macroscale friction analysis. The gained knowledge will be then used to develop new ultrathin materials as a low-friction coating for different type of metal surfaces. |
| Duration: | 1.7.2024 – 30.6.2026 |