Nadir Abdullayev – Optical Properties – Best Researcher Award

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Prof. Nadir Abdullayev began his academic journey with a deep interest in condensed matter physics, focusing on the fundamental properties of electronic systems. From the early stages of his career, he dedicated himself to understanding electric and galvanomagnetic phenomena in low-dimensional electronic systems. His rigorous academic training provided him with the expertise to analyze and interpret complex physical behaviors, particularly in strongly anisotropic crystals.

💼 Professional Endeavors

Throughout his career, Prof. Nadir Abdullayev has conducted extensive and systematic research in the field of electric and galvanomagnetic effects, including the normal and anomalous Hall effects, magnetoresistance, and Shubnikov-de Haas oscillations. His work is primarily focused on low-temperature physics, with experiments reaching temperatures as low as 0.3 K and magnetic fields up to 8 Tesla. His expertise extends to the study of electronic localization effects, such as weak localization, weak antilocalization, and electron-electron interactions, which are crucial for understanding charge transport in advanced materials.

🔬 Contributions and Research Focus

A significant aspect of Prof. Abdullayev’s research is his work on optical properties, including Raman scattering, infrared reflection, photoluminescence, and spectral ellipsometry. His contributions to the field have deepened the understanding of how light interacts with low-dimensional systems, particularly layered and chain crystals. Additionally, his research on phonon spectra and phonon processes has provided groundbreaking insights into heat capacity, thermal expansion, and heat transfer mechanisms in these materials. Notably, he was the first to explain the negative thermal expansion along the layers of graphite using the "membrane effect" and the "thermal anomaly" in heat transfer.

🌍 Impact and Influence

Prof. Nadir Abdullayev’s impact on the field of condensed matter physics is substantial, with his research influencing both theoretical and experimental studies in optical properties and electronic transport phenomena. His findings have paved the way for further developments in material science, particularly in the study of highly anisotropic crystals. His expertise in electronic localization effects and phonon interactions has earned him recognition in the international scientific community, making him a sought-after expert in his field.

🏆Academic Cites

The significance of Prof. Abdullayev’s work is reflected in the high number of citations his research has received in esteemed academic journals. His studies on optical properties and phonon spectra have been widely referenced by researchers working on advanced electronic and optical materials. His contributions serve as a critical foundation for ongoing research in low-temperature physics and material characterization.

🌟 Legacy and Future Contributions

Looking ahead, Prof. Nadir Abdullayev continues to push the boundaries of research in electronic and optical materials. His future contributions are expected to further refine the understanding of optical properties in low-dimensional systems, leading to new applications in nanotechnology, quantum materials, and energy-efficient electronic devices. His legacy as a pioneer in the study of anisotropic crystals and phonon processes will undoubtedly influence future generations of scientists and engineers.

📝Notable Publication

📝Prediction and observation of an antiferromagnetic topological insulator

Authors: MM Otrokov, II Klimovskikh, H Bentmann, et al.

Journal: Nature

Year: 2019

Citations: 1131

📝Novel ternary layered manganese bismuth tellurides of the MnTe-Bi₂Te₃ system: Synthesis and crystal structure

Authors: ZS Aliev, IR Amiraslanov, DI Nasonova, et al.

Journal: Journal of Alloys and Compounds

Year: 2019

Citations: 229

📝Tunable 3D/2D magnetism in the (MnBi₂Te₄)(Bi₂Te₃)ₘ topological insulators family

Authors: II Klimovskikh, MM Otrokov, D Estyunin, et al.

Journal: npj Quantum Materials

Year: 2020

Citations: 228

📝Native point defects and their implications for the Dirac point gap at MnBi₂Te₄(0001)

Authors: M Garnica, MM Otrokov, PC Aguilar, et al.

Journal: npj Quantum Materials

Year: 2022

Citations: 107

📝Elastic properties of layered crystals

Author: NA Abdullaev

Journal: Physics of the Solid State

Year: 2006

Citations: 55

📝The nature of negative linear expansion in layer crystals (C, Bn, GaS, GaSe, and InSe)

Authors: GL Belenkii, EY Salaev, RA Suleimanov, NA Abdullaev, et al.

Journal: Solid State Communications

Year: 1985

Citations: 49

📝Grüneisen parameters for layered crystals

Author: NA Abdullaev

Journal: Physics of the Solid State

Year: 2001

Citations: 41

Yi-yang He – Fiber Optic Sensor – Best Researcher Award

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Mr. Yi-Yang He began his academic journey at Northeastern University (China), where he pursued a Bachelor's degree in Automation from September 2019 to June 2023. During this time, he demonstrated exceptional academic performance, ranking in the top 20% in GPA and winning the university's comprehensive scholarship. His coursework included key subjects such as Fundamentals of Artificial Intelligence, Machine Learning, Intelligent Control Algorithm, Analog Electronic Technology, and Single Chip Microcomputer Applications. His strong foundation in automation and intelligent systems laid the groundwork for his future research in optical engineering and sensor technology.

💼 Professional Endeavors

Following his undergraduate studies, Mr. Yi-Yang He pursued a Master's degree in Optical Engineering at Northeastern University, starting in September 2023. His excellence in academics was recognized through multiple scholarships, including first-class, second-class, and third-class scholarships for new graduate students. His research direction includes finite element physical simulation, precision photoelectric detection technology, optical sensor design and manufacturing, three-dimensional modeling, and nanoscale additive manufacturing processes. His focus on fiber optic sensors and advanced optical technologies places him at the forefront of next-generation sensor research.

🔬 Contributions and Research Focus

Mr. Yi-Yang He has made significant contributions to fiber optic sensor technology, particularly in the development of a Vernier-effect polymer Fabry-Perot (FP) sensing system. His research leverages two-photon polymerization 3D printing to fabricate a high-sensitivity temperature and salinity sensor. By incorporating the optical Vernier effect, his innovative approach enhances temperature sensitivity by approximately 23.9 times and salinity sensitivity by 15.9 times compared to conventional sensors. His work focuses on improving the stability, accuracy, and repeatability of fiber optic sensor manufacturing, which has profound implications for environmental detection applications.

🌍 Impact and Influence

Mr. Yi-Yang He's research in fiber optic sensors has had a significant impact on the field of optical sensing and precision measurement. His pioneering work has led to breakthroughs in the stability and repeatability of optical microstructures, making high-sensitivity environmental detection more feasible and cost-effective. The experimental results of his studies demonstrate the potential for fiber optic sensors to be used in advanced applications, including industrial monitoring, biomedical diagnostics, and environmental assessments. His research sets a new standard for optical sensor design, contributing to the ongoing evolution of precision sensing technologies.

🏆Academic Cites

As a rising researcher in fiber optic sensor technology, Mr. Yi-Yang He's contributions have been recognized in the academic community. His research on Fabry-Perot microcavities and optical Vernier effects is gaining traction, with increasing citations in journals related to optical engineering and sensor technology. His work provides a critical reference for future studies on high-precision fiber optic sensors, ensuring that his methodologies and findings continue to shape advancements in the field.

🌟 Legacy and Future Contributions

Looking forward, Mr. Yi-Yang He aims to further advance fiber optic sensor technology by refining the manufacturing processes and expanding the applications of his research. His commitment to developing innovative sensing solutions ensures a lasting legacy in optical engineering. His future contributions will likely involve integrating fiber optic sensors with artificial intelligence and machine learning to enhance real-time data analysis and predictive capabilities. His ongoing research is expected to play a crucial role in shaping the next generation of smart sensing systems.

📝Fiber Optic Sensor

Mr. Yi-Yang He's cutting-edge research in fiber optic sensor technology has significantly improved the sensitivity and reliability of environmental detection systems. His advancements in fiber optic sensor design, particularly through the use of the Vernier effect and 3D-printed microcavities, have set new standards for high-precision sensing. The future of fiber optic sensor applications is expected to benefit from his continued innovations, paving the way for more accurate and scalable sensing solutions.

Notable Publication

📝Vernier-effect polymer Fabry-Perot sensing system based on two-photon polymerization 3D printing for high-sensitivity temperature and salinity sensing

Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects

Publication Date: June 2025

Authors: Mao-Qing Chen, Yi-Yang He, Chi Zhang, Yun Peng, Yong Zhao