Zhexu Xi | Nanomaterials | Best Paper Award

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Dr. Zhexu Xi | Nanomaterials | Best Paper Award

Research assistant at University of Oxford, United Kingdom

Zhexu Xi is a doctoral researcher in Inorganic Chemistry at the University of Oxford, focusing on electrochemical sensors, exosomal capture, and nanomaterial interfaces. He earned his M.Sc. in Nanoscience and Functional Nanomaterials from the University of Bristol and holds a B.Sc. in Chemistry from Xiamen University, China. Throughout his academic journey, he has combined chemistry, nanotechnology, and data science, contributing significantly to electrocatalysis, nanostructure design, and machine learning applications in materials science. His work spans fundamental research and applied projects, such as low-fouling immunomagnetic platforms, quantum dot charge transfer studies, and porous pavement materials for smart cities. Zhexu has authored multiple publications in reputed journals and conferences and serves as an editorial board member and guest editor in nanoscience-focused journals. Recognized with numerous national and international awards in chemistry, physics, and mathematical modeling, he demonstrates a strong interdisciplinary skill set, merging experimental work with computational insights.

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Education 

Zhexu Xi is currently pursuing his D.Phil. in Inorganic Chemistry at the University of Oxford (2020–2024), focusing on electrochemical detection systems, exosomal assays, and nanoscale interface engineering. His research involves designing advanced electrochemical receptor interfaces, low-fouling nanobeads, and microfluidic platforms for sensitive biomolecular detection. Prior to Oxford, he completed his M.Sc. in Nanoscience and Functional Nanomaterials at the University of Bristol (2019–2020) with a GPA of 69.9%, covering nanoscience techniques, functional materials, and extended research projects. Zhexu holds a B.Sc. in Chemistry (by research) from Xiamen University (2015–2019), graduating with a GPA of 87.8%. He also participated in a short-term summer exchange program on self-assembled functional materials at the University of Michigan in 2018. Throughout his education, Zhexu balanced coursework, independent research, and leadership roles in academic and extracurricular activities, cultivating a robust interdisciplinary background spanning chemistry, nanotechnology, and data science.

Professional Experience 

Zhexu Xi has diverse research experience across nanomaterials synthesis, electrochemistry, photophysics, and data-driven materials science. At Oxford, his Ph.D. focuses on immunomagnetic platform development, electrochemical assay optimization, and microfluidic devices for biomolecule detection. He previously researched 2D molybdenum chalcogenides for hydrogen evolution, investigating structure-activity correlations and nanostructure design. At Bristol, he worked on hydrothermal synthesis of MoX₂ assemblies and their electrocatalytic properties. Earlier at Xiamen University, Zhexu explored electron/hole transfer dynamics in semiconductor quantum dots and developed porous concrete materials for water seepage control. His projects span from fundamental chemical synthesis to advanced spectroscopy, machine learning modeling for nanomaterials property prediction, and environmental material applications. Beyond laboratory research, Zhexu served as a founder of the Bioinformatics Club, a conference presenter, and a guest editor for nanoscience journals. His work demonstrates strong skills in experimental design, data analysis, computational modeling, and scientific communication across disciplines.

Awards and Honors

Zhexu Xi has earned numerous honors recognizing his interdisciplinary expertise. Nationally, he received the Excellent Prize in the Wanmen-Cup Physics Contest (2018), and multiple prizes in China’s innovation competitions, including the “Challenge Cup” and National College Student Extracurricular Academic Competitions for both scientific research and mathematical modeling. His project on eco-friendly cellulose-based adhesives was ranked among China’s top 100 public welfare projects. In mathematical modeling and programming, Zhexu earned second prizes in the “Science Innovation Cup” and the Shenzhen Cup Summer Camp. He also excelled in diverse fields, winning first prizes in national English translation and encyclopedia contests. At university level, he secured multiple awards, including the Xiamen University competition for energy-saving solutions. His contributions span from experimental chemistry to data science applications, underlining a commitment to both scientific innovation and effective communication. Zhexu’s broad recognition underscores his leadership, problem-solving, and cross-disciplinary research capabilities.

Research Interests 

Zhexu Xi’s research interests center on the intersection of nanoscience, electrochemistry, and advanced materials design. He focuses on developing electrochemical detection systems for biomedical applications, particularly exosomal and biomarker assays using microfluidic and low-fouling platforms. His work delves deeply into nanostructured electrocatalysts, especially 2D transition metal dichalcogenides, exploring structure–activity relationships to enhance hydrogen evolution reactions. Zhexu is also passionate about quantum dots and their charge transfer dynamics, investigating ultrafast photophysical processes for energy applications. Beyond experimental chemistry, he integrates machine learning into materials science for property prediction, high-throughput screening, and nanostructure optimization. His interests extend to sustainable materials, exemplified by studies on porous pavements for environmental engineering. Zhexu bridges disciplines by combining experimental synthesis, sophisticated spectroscopic techniques, electrochemical analysis, and computational modeling, aiming to design intelligent materials and systems for clean energy, diagnostics, and smart infrastructure applications.

Research Skills 

Zhexu Xi possesses a strong skill set combining experimental and computational methods. Experimentally, he is skilled in nanoparticle synthesis, hydrothermal methods, quantum dot fabrication, surface functionalization, and electrochemical techniques (e.g., voltammetry, impedance spectroscopy). He has expertise in characterizing nanomaterials using spectroscopy (UV-Vis, transient absorption), microscopy, and electrochemical analysis to study reaction kinetics and material interfaces. Zhexu is adept at designing low-fouling surfaces for immunoassays and integrating microfluidic systems for precise biomolecule capture and quantification. Computationally, he employs machine learning models for materials property prediction, data mining, and image-text analysis, handling complex datasets with advanced statistical methods. He is experienced in modeling electron transfer processes and correlating structural parameters with functional performance. Zhexu excels in scientific communication through publications, presentations, and editorial roles. His interdisciplinary skills allow him to navigate complex research challenges spanning chemistry, nanotechnology, bioanalytics, and computational materials science.

Publication Top Notes

  • Deep multi-view graph-based network for citywide ride-hailing demand prediction

  • Adaptive dual-view wavenet for urban spatial–temporal event prediction

  • Surgical repair of annulus defect with biomimetic multilamellar nano/microfibrous scaffold in a porcine model

  • Urban hotspot forecasting via automated spatio-temporal information fusion

  • Nanostructures Design: the Role of Cocatalysts for Hydrogen and Oxygen Generation in Photocatalytic Water Splitting

  • Functional Nanomaterials Design in the Workflow of Building Machine-Learning Models

  • Underlying Structure-Activity Correlations of 2D Layered Transition Metal Dichalcogenides-Based Electrocatalysts for Boosted Hydrogen Generation

  • Nanostructures of 2D Transition Metal Dichalcogenides for Hydrogen Generation Under Alkaline Conditions: from Theoretical Models to Practical Electrocatalysts

  • Spatial modelling and microstructural modulation of porous pavement materials for seepage control in smart cities

  • How can Humans Drive the Development of Ethical Artificial Intelligence?

  • Regional compartmentalization in multienzyme-related biomaterials system

  • Interfacial Colloidal Performance and Adhesive Strength of an Environmentally Friendly Cellulose-microcrystal-based Adhesive Substance

  • Study on Transient Spectrum Based on charge transfer of semiconductor quantum dots

  • Analysis and Research on Corrosion Law of Natural Environment of Materials

  • An Edge-Deployable Multi-Modal Nano-Sensor Array Coupled with Deep Learning for Real-Time, Multi-Pollutant Water-Quality Monitoring

  • Revisiting the Marcus Inverted Regime: Modulation Strategies for Photogenerated Ultrafast Carrier Transfer from Semiconducting Quantum Dots to Metal Oxides

  • Environmental Effect of Water-Permeable Pavement Materials in Sponge Cities

  • Tunable structure-activity correlations of molybdenum dichalcogenides (MoX2; X= S, Se, Te) electrocatalysts via hydrothermal methods: insight into optimizing the electrocatalytic performance for hydrogen generation

  • Intelligent digitalization and immersive experience in cross-border e-commerce environment (I): the formation pathway and underlying “mediator” of consumer brand attachment

  • Unlocking Hydrogen Evolution: Deciphering Structure-Activity Links in Two-Dimensional Molybdenum Dichalcogenides for Enhanced Electrochemical Catalysis

Assoc. Prof. Dr. Mohamed Ebrahim | Materials Chemistry | Best Researcher Award

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Assoc. Prof. Dr. Mohamed Ebrahim | Materials Chemistry | Best Researcher Award

Assoc. Prof. Dr. Mohamed Ebrahim | Materials Chemistry |Solid State Physics research at National Research Center, Egypt

M. R. Ebrahim, born in Giza, Egypt, is a distinguished researcher in solid-state physics at the National Research Centre (NRC), Egypt. He obtained his Ph.D. in Experimental Physics from Mansoura University, specializing in the synthesis and preparation of Al/Ru bi-layers. His expertise lies in severe plastic deformation (SPD) and surface mechanical alloying (SMA) of aluminum. He has significantly contributed to materials science with innovations such as Surface Mechanical Attrition Treatment (SMAT), for which he holds a patent. His research has advanced aluminum composites, corrosion resistance, and electrochemical behavior, leading to applications in supercapacitors, coatings, and energy storage devices. He has authored numerous publications in high-impact journals and collaborates internationally in materials engineering. His work integrates theoretical physics with experimental applications, contributing significantly to nanomaterials, electrochemistry, and advanced materials.

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Summary of Suitability for Award:

M. R. Ebrahim is a highly accomplished researcher specializing in solid-state physics, severe plastic deformation (SPD), and surface mechanical alloying (SMA). His groundbreaking innovations, such as Surface Mechanical Attrition Treatment (SMAT), have significantly advanced materials science, particularly in supercapacitor development, corrosion resistance, and electrochemical behavior. His patents, numerous high-impact publications, and contributions to industrial and academic research demonstrate his expertise and leadership in his field. He has successfully bridged the gap between theoretical physics and applied materials engineering, leading to practical advancements in nanomaterials and surface engineering. His active involvement in research collaborations, peer reviewing, and international conferences further strengthens his candidacy for this prestigious award. M. R. Ebrahim’s research excellence, technological innovations, and impactful contributions to materials science make him a highly deserving candidate for the “Best Researcher Award.” His patents, publications, and pioneering work in surface engineering and electrochemistry showcase his ability to drive scientific progress and innovation. Recognizing his achievements would honor his dedication to advancing materials science and inspire further groundbreaking research in the field.

🎓Education:

M. R. Ebrahim pursued his academic journey in physics, starting with a B.Sc. in Physics from Helwan University, Egypt. He furthered his studies with a Ph.D. in Experimental Physics from Mansoura University, focusing on synthesis and preparation of Al/Ru bi-layers. His doctoral research emphasized surface modifications, mechanical alloying, and electrochemical properties of aluminum-based materials. His educational background laid a strong foundation for his work in severe plastic deformation (SPD), surface engineering, and supercapacitor technology. His studies encompassed various aspects of solid-state physics, nanomaterials, and electrochemical behavior. With extensive laboratory experience, he gained expertise in materials characterization, thin-film coatings, and corrosion-resistant materials. His education has driven his innovations in advanced materials processing, mechanical attrition, and novel composite development, enabling him to make significant contributions to materials science and industrial applications.

🏢Work Experience:

M. R. Ebrahim has been a Researcher in Solid-State Physics at NRC, Egypt, since 2010, working extensively on surface mechanical alloying, corrosion resistance, and severe plastic deformation of aluminum-based materials. His research focuses on enhancing the mechanical, electrical, and electrochemical properties of metals for various applications. He pioneered SMAT technology for material surface modifications, significantly improving supercapacitor performance, dielectric properties, and composite coatings. His collaborations extend internationally, engaging in projects related to nano-coatings, energy storage, and metal reinforcement techniques. He has contributed to industrial advancements by integrating electrochemical engineering with material science, leading to innovative solutions for corrosion-resistant and high-performance aluminum materials. He actively publishes, reviews scientific papers, and participates in global conferences, sharing his expertise in materials modification, nanostructured composites, and energy applications. His work bridges the gap between fundamental physics and practical material applications, driving progress in advanced alloy engineering.

🏅Awards: 

M. R. Ebrahim has received several prestigious recognitions for his outstanding contributions to solid-state physics, surface mechanical alloying, and severe plastic deformation. He has been acknowledged for his innovative patents, including the “Machine for Surface Mechanical Attrition Treatment (SMAT)” and “Supercapacitors Construction from Fiberglass through Surface Mechanical Alloying.” These innovations were recognized by the Egyptian Scientific Research Academy, highlighting their significance in advancing materials science and energy storage technologies. His research excellence has also earned him invitations to international conferences, peer-reviewing roles in high-impact journals, and collaborations with leading institutions. His contributions to corrosion resistance, electrochemical behavior, and composite materials have been widely cited, further solidifying his reputation as a leading researcher in his field. His dedication to applied physics and engineering continues to influence modern materials science, making him a strong contender for prestigious scientific awards and fellowships.

🔬Research Focus:

M. R. Ebrahim’s research is centered on solid-state physics, surface engineering, and severe plastic deformation (SPD) to enhance material properties. His work on surface mechanical alloying (SMA) and surface mechanical attrition treatment (SMAT) has led to significant advancements in corrosion resistance, mechanical strength, and electrical properties of aluminum-based materials. A key aspect of his research is the development of supercapacitors using fiberglass and aluminum composites, which has implications for energy storage and electronic applications. His studies also explore electrochemical behavior, dielectric permittivity, and microstructural evolution in materials subjected to mechanical treatments. By integrating experimental physics with material science, he has successfully introduced innovative methodologies to modify and enhance material surfaces for industrial and technological applications. His contributions are particularly impactful in nanomaterials, thin films, and composite materials, where his work continues to drive new advancements in materials engineering and applied physics.

Publication Top Notes:

  • “Electrical properties of Al-Si surface composites through surface mechanical alloying on severe plastic deformed Al substrates”

  • “Mechanical treatment of aluminum plate surfaces for improvements of capacitance and dielectric permittivity”

  • “Corrosion behavior of aluminum-Fiber Glass composite fabricated through surface mechanical alloying in alkaline media”

  • “Electrochemical behavior of Al₂O₃/Al composite coated Al electrodes through surface mechanical alloying in alkaline media”

  • “Terahertz acoustic phonon detection from a compact surface layer of spherical nanoparticles powder mixture of aluminum, alumina and multi-walled carbon nanotube”

  • “Improving corrosion resistance of Al through severe plastic deformation 1-under free condition”

  • “Improving corrosion resistance of Al through severe plastic deformation 2-under accelerated condition”

  • “Spectroscopic Analysis of Severe Plastically Deformed Raw Al Rolled Sheet”

  • “Microstructure and Microhardness Evolutions of High Fe Containing Near-Eutectic Al-Si Rapidly Solidified Alloy”

  • “Microstructure and microhardness evolution of melt-spun Al-Si-Cu alloy”

  • “Study of Phase Evolution in Sputtered Al/Ru Bi-layers Nanocrystalline Thin Films”

 

Prof. Dr. Vânia Caldas Sousa | Materials Chemistry | Material Chemistry Award

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Prof. Dr. Vânia Caldas Sousa | Materials Chemistry | Material Chemistry Award

Prof. Dr. Vânia Caldas Sousa | Materials Chemistry | Professor at UFRGS/DEMAT , Brazil 

Vânia Caldas de Sousa is a distinguished Professor Titular at the Universidade Federal do Rio Grande do Sul (UFRGS), Brazil. She specializes in materials engineering, with a focus on non-metallic materials, ceramics, and advanced processing techniques. With a prolific research career spanning decades, she has contributed significantly to the synthesis of ceramic materials, particularly in ZnO-based varistors and refractory composites. She has conducted postdoctoral research at renowned institutions such as the University of California, Davis, Instituto de Cerámica y Vidrio (Spain), and Universidade Federal de São Carlos (UFSCar). Her work has been widely recognized through numerous publications, research projects, and academic contributions. She has played a key role in mentoring young researchers and developing innovative approaches in materials engineering. As an active academic, she has been dedicated to advancing knowledge in ceramic materials, their processing, and their applications in various engineering fields.

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Summary of Suitability for Award:

Dr. Vânia Caldas de Sousa is a distinguished researcher in Materials Chemistry, specializing in ceramics, varistors, and composite materials. With a Ph.D. in Science and Engineering of Materials from the Federal University of São Carlos (UFSCar), her research has significantly advanced the synthesis and processing of ceramic materials. Her expertise in combustion synthesis, refractory materials, and electrical ceramics aligns perfectly with the award’s focus on innovative contributions to materials chemistry. Dr. Vânia Caldas de Sousa is highly suitable for the “Material Chemistry Award” due to her extensive research in materials chemistry, particularly in ceramic materials, varistors , and chemical synthesis techniques. Her academic leadership, international collaborations, and impactful publications make her an outstanding candidate for this prestigious recognition.

🎓Education:

Vânia Caldas de Sousa holds a Ph.D. in Materials Science and Engineering from Universidade Federal de São Carlos (UFSCar), Brazil, where she worked on the synthesis of ZnO-based varistors through combustion reaction techniques. Her doctoral research significantly contributed to understanding chemical synthesis methods for ceramic materials. She earned her master’s degree from the same institution, focusing on the preparation and characterization of mullite-cordierite composites for refractory applications. She completed her undergraduate degree in Materials Engineering at Universidade Federal da Paraíba (UFPB), where she developed a strong foundation in materials science and processing. Throughout her academic journey, she has pursued multiple short courses and training programs, covering topics such as biomaterials, ceramic processing, phase diagrams, and surface analysis. Her continuous academic development has been complemented by postdoctoral research experiences at leading global institutions, enhancing her expertise in advanced materials engineering and ceramic technologies.

🏢Work Experience:

Vânia Caldas de Sousa is a Professor Titular at Universidade Federal do Rio Grande do Sul (UFRGS), where she leads research in materials science, particularly focusing on ceramic materials, synthesis techniques, and powder processing. She has held this position for several years, actively contributing to research and academic programs. She has taught courses at both undergraduate and postgraduate levels, including subjects like Advanced Ceramics, Science of Materials, and Mechanical Construction Materials. Additionally, she has mentored numerous graduate students in research projects related to ceramic materials and their applications. Her international research collaborations have included postdoctoral stints at the University of California, Davis, and Instituto de Cerámica y Vidrio (Spain). She has also been involved in various funded research projects, contributing to advancements in materials engineering, and has worked extensively on developing innovative ceramic materials with applications in energy storage, electronics, and structural components.

🏅Awards: 

Vânia Caldas de Sousa has received multiple awards and recognitions for her contributions to materials science and engineering. She has been honored with research grants and fellowships from esteemed organizations, including the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) and the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). Her research excellence has been acknowledged through invitations to speak at international conferences and workshops. She has been recognized for her outstanding mentorship of graduate students, fostering innovation and development in ceramic materials. Her work has been featured in prestigious scientific journals, and she has received distinctions for her contributions to the advancement of non-metallic materials. Through her active involvement in academia, she has played a crucial role in shaping the future of materials engineering, earning respect and accolades from the scientific community.

🔬Research Focus:

Vânia Caldas de Sousa’s research revolves around the synthesis, processing, and characterization of ceramic materials. She specializes in powder synthesis techniques, including combustion reactions, for developing high-performance ceramics. Her work has contributed significantly to the understanding of ZnO-based varistors, which are essential for electronic applications. She is also deeply involved in the study of refractory materials, particularly mullite-cordierite composites, for high-temperature applications. Another key aspect of her research is the development of advanced ceramic processing techniques, including thermal analysis and phase equilibrium studies. Her investigations into the electrical and optical properties of inorganic materials have further expanded the applications of engineered ceramics. She collaborates with international institutions to explore innovative solutions in materials science, emphasizing energy efficiency, sustainability, and industrial applications of ceramic materials. Her research aims to bridge the gap between fundamental science and technological advancements in material engineering.

Publication Top Notes:

Characterization of silica produced from rice husk ash: comparison of purification and processing methods

Authors: IJ Fernandes, D Calheiro, FAL Sánchez, ALD Camacho, TLAC Rocha, VC Sousa

Citations: 189

Year: 2017

Combustion synthesized ZnO powders for varistor ceramics

Authors: VC Sousa, AM Segadaes, MR Morelli, R Kiminami

Citations: 179

Year: 1999

Recent research developments in SnO2-based varistors

Authors: MR Cássia-Santos, VC Sousa, MM Oliveira, FR Sensato, WK Bacelar, …

Citations: 105

Year: 2005

Magnetic and Mössbauer behavior of the nanostructured MgFe2O4 spinel obtained at low temperature

Authors: S Da Dalt, AS Takimi, TM Volkmer, VC Sousa, CP Bergmann

Citations: 95

Year: 2011

The effect of Ta2O5 and Cr2O3 on the electrical properties of TiO2 varistors

Authors: VC Sousa, ER Leite, JA Varela, E Longo

Citations: 59

Year: 2002

Combustion process in the synthesis of ZnO–Bi2O3

Authors: VC de Sousa, MR Morelli, RHG Kiminami

Citations: 58

Year: 2000

Physical, chemical and electric characterization of thermally treated rice husk ash and its potential application as ceramic raw material

Authors: IJ Fernandes, FAL Sánchez, JR Jurado, AG Kieling, TLAC Rocha, VC Sousa

Citations: 56

Year: 2017

Influence of fuel on morphology of LSM powders obtained by solution combustion synthesis

Authors: DP Tarragó, C de Fraga Malfatti, VC de Sousa

Citations: 48

Year: 2015

Study of structural and optical properties of ZnO nanoparticles synthesized by an eco-friendly tapioca-assisted route

Authors: WL de Almeida, NS Ferreira, FS Rodembusch, VC de Sousa

Citations: 38

Year: 2021

Eco-friendly and cost-effective synthesis of ZnO nanopowders by Tapioca-assisted sol-gel route

Authors: WL de Almeida, FS Rodembusch, NS Ferreira, VC de Sousa

Citations: 34

Year: 2020

Microstructure and electrical properties of (Ta, Co, Pr) doped TiO2 based electroceramics

Authors: VC Sousa, MM Oliveira, MO Orlandi, E Longo

Citations: 32

Year: 2010

Nonlinear behavior of TiO2· Ta2O5· MnO2 material doped with BaO and Bi2O3

Authors: MRD Bomio, VC Sousa, ER Leite, JA Varela, E Longo

Citations: 32

Year: 2004

Electrical Properties of La0.6Sr0.4Co1–yFeyO3 (y = 0.2–1.0) Fibers Obtained by Electrospinning

Authors: M Lubini, E Chinarro, B Moreno, VC de Sousa, AK Alves, CP Bergmann

Citations: 30

Year: 2015

Tertiary urban wastewater treatment with microalgae natural consortia in novel pilot photobioreactors

Authors: EG de Morais, JCA Marques, PR Cerqueira, C Dimas, VS Sousa, …

Citations: 27

Year: 2022