Nadir Abdullayev – Optical Properties – Best Researcher Award

Published on by AMO Physics

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

Dinesh Kumar Chaudhary – Materials Science – Best Researcher Award

Published on by AMO Physics

Assist. Prof. Dr. Dinesh Kumar Chaudhary - Materials Science - Best Researcher Award 

Tribhuvan University - Nepal

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🎓 Early Academic Pursuits

Dr. Dinesh Kumar Chaudhary's academic journey began at Tribhuvan University, Kathmandu, Nepal, where he completed his B.Sc. in Physics in 2000, followed by an M.Sc. in Physics in 2002. He pursued his Ph.D. in Physics, graduating in 2023. Throughout his early academic pursuits, Dr. Chaudhary demonstrated a strong interest in materials science and semiconductor physics, setting the foundation for his research career. His early focus on the properties and applications of thin films in various domains paved the way for his later work in gas sensing and related technologies.

💼 Professional Endeavors

Since 2004, Dr. Chaudhary has served as a dedicated faculty member at the Physics Department of Amrit Campus, Tribhuvan University, teaching B.Sc. and M.Sc. Physics courses. His professional endeavors have been deeply rooted in both teaching and research, where he has contributed to the academic development of numerous students. His commitment to improving educational standards in Nepal is reflected in his participation in various workshops and training programs, such as the “Training on Physics Teaching” and the “Workshop on Application of Space Science,” both organized by Tribhuvan University.

🔬 Contributions and Research Focus

Dr. Chaudhary’s research has been centered on materials science, particularly in the preparation and characterization of thin films for applications in gas sensing. His notable research projects include studies on thin film tin sulfide, Fe-doped ZnO nano-films, and their optical and electrical properties. His Ph.D. research, “Study on Electrical and Optical Properties of Zinc Oxide Semiconductor for Gas Sensor Application,” reflects his commitment to advancing the field of materials science with a particular focus on sensors. His research on ZnO films, particularly those doped with Fe and Sn, has led to significant insights into their use for ethanol vapor detection.

🌍 Impact and Influence

Dr. Chaudhary’s work has made a substantial impact on the field of materials science, especially in the area of semiconductor thin films for sensor applications. His presentations at international conferences, such as the International Meeting on Energy Storage Devices and Academia conclaves (IMESD-2018) and the Sensors Research eConference 2022, have contributed to a broader understanding of materials science. As an active member of the Nepal Physical Society and IEEE EDS Society, he has influenced both national and international research communities.

🏆Academic Cites

Dr. Dinesh Kumar Chaudhary began his academic journey with a strong foundation in physics, earning his B.Sc. in Physics (2000) and M.Sc. in Physics (2002) from Tribhuvan University, Kathmandu, Nepal. His early academic pursuits laid the groundwork for a future in material science, leading him to pursue a Ph.D. in Physics from the same institution, which he completed in 2023. Dr. Chaudhary’s early interest in material science and physics spurred him to focus on thin film semiconductor materials, specifically ZnO and Tin Sulphide, for applications such as gas sensing and solar cell technologies.

🌟 Legacy and Future Contributions

Looking forward, Dr. Dinesh Kumar Chaudhary’s legacy in the field of materials science is poised to expand. His ongoing research promises to further explore the potential of thin films in a variety of sensor applications, contributing to the development of more sensitive and reliable gas sensors. As an educator and researcher, he will continue to influence the next generation of scientists and engineers in Nepal and beyond. Dr. Chaudhary’s work on the application of materials science in gas sensing technologies is expected to play a pivotal role in future advancements in sensor materials.

📝Materials Science

Dr. Dinesh Kumar Chaudhary’s contributions to materials science have significantly advanced the understanding of semiconductor thin films, particularly in gas sensing applications. His work on the properties of materials science related to ZnO films has opened new avenues for sensor development. As he continues to innovate in materials science, Dr. Chaudhary’s research on thin films and their applications in ethanol sensing is poised to make lasting contributions to the field.

Notable Publication

📝Impact of Aluminum Doping on the Enhanced Ethanol Gas Sensing Characteristics of ZnO Thin Film

Authors: Acharya, T.R., Chaudhary, D.K., Lamichhane, P., Choi, E.H., Kaushik, N.K.

Journal: Ceramics International

Year: 2024

Citations: 0

📝A Highly Sensitive and Selective ZnO-Based Ammonia Sensor: Fe-Doping Effect

Authors: Chaudhary, D.K., Joshi, S.K., Shrestha, R.

Journal: Physica Scripta

Year: 2024

Citations: 0

📝Wide-Range Ethanol Sensor Based on a Spray-Deposited Nanostructured ZnO and Sn–Doped ZnO Films

Authors: Chaudhary, D.K., Acharya, T.R., Shrestha, R., Kaushik, N.K., Joshi, L.P.

Journal: Sensors and Actuators A: Physical

Year: 2024

Citations: 2

📝Enhancement in the Sensing Efficacy of ZnO-Based Ethanol Sensor: Fe-ZnO Film | Підвищення чутливої ефективності датчика етанолу на основі ZnO: плівка Fe-ZnO

Authors: Chaudhary, D.K., Joshi, S.K., Thapa, S., Yue, Y., Zhu, P.

Journal: Journal of Nano- and Electronic Physics

Year: 2024

Citations: 0

📝Structural, Mechanical, Electronic and Optical Properties of MgZnO3 Perovskite: First-Principles Study

Authors: Lawati, D.R., Neupane, H.K., Chaudhary, D.K., Joshi, L.P., Parajuli, R.

Journal: Journal of Physics and Chemistry of Solids

Year: 2023

Citations: 5

📝Influence of Nanoparticle Size on the Characterization of ZnO Thin Films for Formaldehyde Sensing at Room Temperature

Authors: Acharya, T.R., Chaudhary, D.K., Gautam, S., Kaushik, N.K., Choi, E.H.

Journal: Sensors and Actuators A: Physical

Year: 2023

Citations: 18