This doctoral thesis is dedicated to the multidisciplinary exploration of the diverse applications of diamonds, harnessing their exceptional physical and chemical properties. Diamonds, characterized by their unique attributes, exhibit immense potential across various scientific domains and industrial sectors. The research in this thesis commenced with an extensive investigation into diamond growth technique s, with a primary focus on chemical vapor deposition (CVD). Through this method, we succeeded in expanding the spectrum of synthesized diamonds, both in terms of quality and size, thereby opening up new avenues for their utilization across a myriad of appl ications. The outcomes of this research have significantly broadened the applicability of diamonds in diverse fields such as electronics, optics, thermal management, life sciences, and materials science. Subsequently, our attention turned towards the devel opment of marine antibacterial properties. By scrutinizing the nanostructures present on diamond surfaces, we embarked on an exploration of their potential deployment in nanoelectronics devices, biomedicine, and material processing. This research is primar ily geared towards enhancing the antibacterial attributes of diamonds, thereby catering to the stringent demands of biomedical applications. Our efforts are directed at mitigating infection risks, preserving the sterility of medical equipment, averting cro ss contamination, and ushering in the era of highly sensitive biosensors and diagnostic tools.Furthermore, we have delved into the realm of diamond thermoelectric properties. Despite diamonds' inherent high thermal conductivity, which historically posed c hallenges for their use in thermoelectric applications, we have endeavored to enhance their thermoelectric performance through innovative physical modification methodologies. Leveraging the unique material characteristics of diamonds, we have unlocked thei r potential for extended longevity and stability in comparison to other thermoelectric materials. This achievement translates into reduced maintenance requirements, lower replacement frequencies, and ultimately, cost savings. Moreover, diamonds' steadfast stability equips them to maintain peak performance even in the harshest of environments, such as aerospace and energy conversion systems. In summation, this doctoral thesis undertakes a comprehensive exploration of diamonds' attributes, encompassing growth methodologies, marine antibacterial applications, and thermoelectric properties. Our research not only augments the scientific understanding of diamonds but also fosters innovation and paves the way for their diverse applications across several sectors.</p
