Prof. Rishi Kumar Tiwari | Physics | Best Researcher Award

Prof. Rishi Kumar Tiwari | Physics | Best Researcher Award

Professor at Govt. Model Science College, Rewa (M.P.), India

Dr. Rishi Kumar Tiwari is a distinguished Professor of Mathematics with over 30 years of academic service, currently holding a post secured through the Madhya Pradesh Public Service Commission (2011). He earned his Ph.D. in Mathematics from A.P.S. University, Rewa, in 1998, following an M.Sc. with a Gold Medal. With a prolific research portfolio including 134 national and international publications and six authored books, he has supervised 21 Ph.D. scholars and continues to guide research in cosmology, general relativity, and differential geometry. Dr. Tiwari has presented his work globally, including in Italy, Germany, and South Africa, contributing to international scientific collaborations. His accolades include the DST-ICTP Fellowship (Italy), IASc-INSA-NASI Summer Research Fellowship, and the Shikshavid Samman (2023). Having served as Head of Departments and on multiple academic boards, Dr. Tiwari remains committed to advancing mathematics through education, research, and international cooperation in theoretical physics and cosmology.

Professional Profile 

Education 

Dr. Rishi Kumar Tiwari holds a strong academic background in science and mathematics. He completed his Higher Secondary education from the Board of Secondary Education, Bhopal, in 1985 with a focus on Physics, Chemistry, and Mathematics. He earned his B.Sc. from A.P.S. University, Rewa, in 1988, and later completed his M.Sc. in Mathematics from the same university in 1990, earning an outstanding, which earned him a Gold Medal. He was awarded a Ph.D. in Mathematics from A.P.S. University in 1998. His doctoral work laid the foundation for a research career focused on general relativity, cosmological modeling, and tensor analysis. Dr. Tiwari’s academic credentials reflect a consistent record of academic excellence and deep subject mastery, serving as the cornerstone for his teaching, research, and scholarly contributions to the field of mathematics and cosmology over the last three decades.

Professional Experience 

Dr. Rishi Kumar Tiwari brings with him over 30 years of extensive teaching experience at both undergraduate and postgraduate levels. He has held several significant academic leadership roles, including Head of the Department of Mathematics and Computer Science at Pt. S.N. Shukla University, Shahdol, and formerly at Govt. Model Science College, Rewa. He has also been a member of various Boards of Studies across reputed institutions like A.P.S. University and Govt. T.R.S. College, Rewa. Selected through the M.P. Public Service Commission in 2011, Dr. Tiwari has not only imparted knowledge but also shaped curricula and research agendas. Under his mentorship, 21 Ph.D. scholars have completed their doctorates, with others currently under supervision. His ability to blend deep mathematical theory with modern cosmological applications makes him a respected academic figure in India. He continues to engage students and researchers in exploring advanced topics in mathematical physics.

Research Interest

Dr. Tiwari’s research interest lies primarily in the fields of General Relativity, Cosmology, Tensor Analysis, and Differential Geometry, with a particular emphasis on exploring homogeneous cosmological models and conharmonic curvature tensors. His contributions to understanding the expanding universe and dark energy models have been presented at premier international conferences, including the TAUP Series and the Texas Symposium on Relativistic Astrophysics. With 134 research papers in reputed journals and conferences, Dr. Tiwari has carved a niche in the academic study of mathematical models underpinning astrophysical phenomena. His involvement in UGC-funded research projects on Bianchi Models and Robertson-Walker cosmologies illustrates his commitment to foundational and applied research. Collaborating with institutions in South Africa and Europe, he frequently shares findings on time-varying deceleration parameters and symmetry models. His international exposure and research depth continue to influence global discussions on theoretical physics and contribute to the development of cosmological theory.

Award and Honors

Throughout his illustrious career, Dr. Rishi Kumar Tiwari has received several awards and fellowships that affirm his academic excellence and research impact. He was awarded the DST-ICTP Fellowship (Italy, 2008), recognizing his work in mathematical physics. In 2012, he received the prestigious IASc-INSA-NASI Summer Research Fellowship, further solidifying his standing in the Indian scientific community. His most recent recognition, the Shikshavid Samman from the Department of Higher Education, Madhya Pradesh (2023), honors his decades-long contribution to higher education and mentorship in mathematics. Additionally, Dr. Tiwari has received two major UGC research grants for his projects on cosmological models. These accolades, combined with invitations for popular and technical talks at institutions like the University of KwaZulu-Natal and Mangosuthu University in South Africa, showcase his international academic reputation. His dedication to theoretical exploration and student development continues to garner respect and admiration in the fields of mathematics and cosmology.

Publications Top Notes

  • Title: Perfect fluid Bianchi Type-I cosmological models with time varying G and Λ
    Authors: JP Singh, RK Tiwari
    Year: 2008
    Citations: 63
    Source: Pramana – Journal of Physics, Vol. 70 (4), pp. 565–574

  • Title: Bianchi type-I cosmological models with time dependent G and Λ
    Authors: RK Tiwari
    Year: 2008
    Citations: 43
    Source: Astrophysics and Space Science, Vol. 318 (3), pp. 243–247

  • Title: Phase transition of LRS Bianchi type-I cosmological model in f(R,T)f(R, T) gravity
    Authors: RK Tiwari, D Sofuoğlu, VK Dubey
    Year: 2020
    Citations: 42
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 17 (12), Article ID: 2050187

  • Title: Cosmological tests of parametrization q(z)q(z) in FLRW cosmology
    Authors: A Bouali, BK Shukla, H Chaudhary, RK Tiwari, M Samar, G Mustafa
    Year: 2023
    Citations: 41
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 20 (09), Article ID: 2350152

  • Title: Scenario of two-fluid dark energy models in Bianchi type-III Universe
    Authors: RK Tiwari, A Beesham, BK Shukla
    Year: 2018
    Citations: 41
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 15 (11), Article ID: 1850189

  • Title: Cosmological model with variable deceleration parameter in f(R,T)f(R, T) modified gravity
    Authors: RK Tiwari, A Beesham, B Shukla
    Year: 2018
    Citations: 38
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 15 (07), Article ID: 1850115

  • Title: Bianchi type-III cosmological models with gravitational constant G and the cosmological constant Λ
    Authors: JP Singh, RK Tiwari, P Shukla
    Year: 2007
    Citations: 36
    Source: Chinese Physics Letters, Vol. 24 (12), pp. 3325

  • Title: Anisotropic model with decaying cosmological term
    Authors: RK Tiwari, A Beesham
    Year: 2018
    Citations: 33
    Source: Astrophysics and Space Science, Vol. 363 (11), Article: 234

  • Title: Some Robertson-Walker models with time dependent G and Λ
    Authors: RK Tiwari
    Year: 2009
    Citations: 33
    Source: Astrophysics and Space Science, Vol. 321 (2), pp. 147–150

  • Title: Time varying G and Λ cosmology in f(R,T)f(R, T) gravity theory
    Authors: RK Tiwari, A Beesham, R Singh, LK Tiwari
    Year: 2017
    Citations: 31
    Source: Astrophysics and Space Science, Vol. 362 (8), Article: 143

  • Title: Transit cosmological models with domain walls in f(R, T) gravity
    Authors: RK Tiwari, A Beesham, A Pradhan
    Year: 2017
    Citations: 30
    Source: Gravitation and Cosmology, Vol. 23 (4), pp. 392–400

  • Title: Cosmological models with viscous fluid and variable deceleration parameter
    Authors: RK Tiwari, A Beesham, BK Shukla
    Year: 2017
    Citations: 30
    Source: The European Physical Journal Plus, Vol. 132 (1), Article: 20

  • Title: An LRS Bianchi type-I cosmological model with time-dependent Λ term
    Authors: JP Singh, RK Tiwari
    Year: 2007
    Citations: 27
    Source: International Journal of Modern Physics D, Vol. 16 (04), pp. 745–754

  • Title: Cosmographic studies of q(z)q(z) parametrization in f(R,T)f(R, T) framework
    Authors: BK Shukla, A Bouali, H Chaudhary, RK Tiwari, MS Martín
    Year: 2023
    Citations: 24
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 20 (14), Article ID: 2450007

  • Title: Quadratically varying deceleration parameter in f(R,T)f(R, T) gravity
    Authors: RK Tiwari, D Sofuoğlu
    Year: 2020
    Citations: 24
    Source: International Journal of Geometric Methods in Modern Physics, Vol. 17 (10), Article ID: 2030003

Conclusion 

Dr. Rishi Kumar Tiwari stands as a paragon of dedication, intellect, and international engagement in the realm of mathematical sciences. From earning a Gold Medal in his master’s studies to mentoring 21 Ph.D. scholars and producing an expansive body of scholarly work, he exemplifies the ideals of academic leadership. His prolific research, particularly in the areas of general relativity and cosmological modeling, has transcended national borders, earning him respect across continents. Participation in global scientific platforms and collaborations with African and European institutions underline his commitment to knowledge exchange and cross-cultural academic growth. With multiple leadership roles in universities and active contributions to curriculum development and academic governance, Dr. Tiwari continues to shape the future of mathematical education and research in India. His legacy is built not only on research excellence but also on his lifelong mission to inspire, educate, and innovate in the ever-evolving landscape of mathematical physics.

Pengxia Zhou | Physics | Best Researcher Award

Prof. Dr. Pengxia Zhou | Physics | Best Researcher Award

Associate professor at Nantong University, China

Zhou Pengxia (Zhou Pengxia) 🎓, born on October 24, 1977 🎂, is a dedicated physicist and educator at the School of Physical Science and Technology, Nantong University 🇨🇳. With over two decades of experience, she has contributed significantly to condensed matter physics and multiferroic materials research ⚛️. She earned her Ph.D. from Nanjing University and conducted postdoctoral research at leading institutions in Singapore 🌏. As the principal investigator of an NSFC-funded project, she explores octahedral rotations in perovskite superlattices 🧪. Her work bridges teaching and innovation, advancing the frontiers of physics through both academia and international collaboration 🌟.

Professional Profile:

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🔹 Education and Experience 

📘 Education:

  • 🎓 1997–2001: Bachelor’s Degree in Physics – Yanbei Normal College

  • 📚 2001–2004: Master’s Degree in Condensed Matter Physics – Yangzhou University

  • 🧠 2011–2015: Doctor’s Degree in Physics – Nanjing University

🧑‍🏫 Professional Experience:

  • 🏫 2004–Present: Lecturer – Nantong University

  • 🌏 2017.10–2018.02: Visiting Scholar – Singapore University of Technology and Design

  • 🌐 2018.09–2019.08: Research Fellow – National University of Singapore

🔹 Professional Development 

Dr. Zhou Pengxia’s professional journey reflects her passion for physics and global academic growth 🌍📈. She has participated in international collaborations in Singapore, enriching her research and teaching perspectives 🇸🇬🔬. At Nantong University, she not only teaches but also mentors students in advanced materials science 🎓🧪. Her participation in cutting-edge research on perovskite superlattices and multiferroicity has positioned her as a recognized contributor in her field ⚛️. Through continual learning, overseas exchanges, and scientific leadership, Dr. Zhou remains committed to academic excellence and innovation in physical science education and research 📘🌟.

🔹 Research Focus 

Dr. Zhou Pengxia’s research is centered around condensed matter physics with a specific emphasis on multiferroic materials and perovskite superlattices 🧲⚡. She investigates how octahedral rotation affects multiferroicity, exploring mechanisms to enhance functional properties of complex oxides 🧪🧬. Her work contributes to the understanding and engineering of materials that exhibit both ferroelectric and magnetic properties – critical for next-generation electronic devices 💻🔋. With a focus on crystal structures and symmetry interactions, her research bridges fundamental science and potential applications in sensors, memory devices, and spintronics 🌐🔧. Zhou’s interdisciplinary approach adds great value to material innovation 🔍🧠.

🔹 Awards and Honors 

🏆 Awards & Honors:

  • 🌟 Principal Investigator – National Natural Science Foundation of China (2017–2019) for research on perovskite superlattices

  • 🎓 Invited Research Fellow – National University of Singapore (2018–2019)

  • 🌍 International Collaboration Grant – Singapore University of Technology and Design (2017–2018)

Publication Top Notes

1. Employing interpretable multi-output machine learning to predict stable perovskites in photovoltaics

Journal: Materials Today Communications, 2025
DOI: 10.1016/j.mtcomm.2025.112552
Summary:
This study leverages interpretable multi-output machine learning models to predict thermodynamically stable perovskite materials for photovoltaic applications. The key innovation lies in the simultaneous prediction of multiple material properties (e.g., stability, band gap, defect tolerance) using models that offer transparency into decision-making (e.g., SHAP values, decision trees). This work contributes to faster and explainable discovery of efficient perovskites for solar cell design.

2. A first-principles study on the multiferroicity of semi-modified X₂M (X = C, Si; M = F, Cl) monolayers

Journal: Physical Chemistry Chemical Physics, 2023
DOI: 10.1039/D2CP04575C
Summary:
This DFT-based study explores multiferroic behavior in 2D monolayers composed of X₂M (X = C, Si; M = F, Cl), highlighting their coexisting ferroelectric and magnetic properties. The findings suggest semi-modified 2D materials could serve as candidates for spintronic and memory devices, due to their tunable multiferroic characteristics.

3. Theoretical investigation of the magnetic and optical properties in a transition metal-doped GaTeCl monolayer

Journal: Physical Chemistry Chemical Physics, 2023
DOI: 10.1039/D3CP02313C
Summary:
This study investigates how doping GaTeCl monolayers with transition metals (e.g., Mn, Fe, Co) affects their magnetic and optical behavior. Using DFT, the authors show enhanced magneto-optical properties, suggesting that doped GaTeCl systems are promising for optoelectronic and spintronic devices.

4. Magnetism and hybrid improper ferroelectricity in LaMO₃/YMO₃ superlattices

Journal: Phys. Chem. Chem. Phys., 2019
Author: Pengxia Zhou
Summary:
This work presents a theoretical analysis of LaMO₃/YMO₃ (M, Y = transition metals) superlattices, showing hybrid improper ferroelectricity arising from coupling between octahedral tilting and rotations, along with magnetic ordering. The results support the design of multifunctional oxide heterostructures combining electric and magnetic orderings.

5. The excitonic photoluminescence mechanism and lasing action in band-gap-tunable CdS₁−ₓSeₓ nanostructures

Journal: Nanoscale, 2016
Author: Pengxia Zhou
Summary:
This paper discusses CdS₁−ₓSeₓ nanostructures with tunable band gaps. The team demonstrates strong excitonic photoluminescence and low-threshold lasing, linking optical properties to composition and quantum confinement. It provides a foundational understanding for nanoscale optoelectronic and laser devices.

6. Ferroelectricity driven magnetism at domain walls in LaAlO₃/PbTiO₃ superlattices

Journal: Scientific Reports, 2015
Author: Pengxia Zhou
Summary:
This study reveals that in LaAlO₃/PbTiO₃ superlattices, ferroelectric domain walls can induce localized magnetic moments due to lattice distortions and charge redistributions. This domain-wall magnetism introduces the potential for non-volatile magnetic memory controlled by ferroelectric domains.

Conclusion:

Dr. Zhou Pengxia is a suitable candidate for a Best Researcher Award, particularly in the fields of condensed matter physics and material science. Her leadership in nationally funded research, international collaboration experience, and long-standing academic service reflect a researcher committed to scientific advancement and knowledge dissemination. While her publication record and citation metrics were not provided, her PI role on an NSFC project suggests peer recognition and scholarly maturity.