drug delivery systems development – Science

Three Tufts Professors Recognized Among the World’s Leading Researchers

Denise Maddox — Wed, 12 Nov 2025 23:25:13 +0000

Three eminent professors from Tufts University have achieved remarkable recognition, having been included in the prestigious 2025 list of the world’s most highly cited researchers, compiled by Clarivate. This list highlights scholars whose works have not only led to substantial advancements in their respective fields but have also demonstrated significant influence as measured by citation frequency by their peers. Being featured on this list signifies a notable milestone in academic research and underlines the vital role these faculty members play in fostering innovation and scientific inquiry.

Chunmei Li, an accomplished research assistant professor of biomedical engineering, is renowned for her groundbreaking research at the intersection of biomaterials, regenerative medicine, and sustainable materials science. Her research endeavors focus on silk-fibroin platforms, which are capable of facilitating biomedical and structural innovations. By employing an interdisciplinary approach that integrates principles of materials chemistry, biomechanics, and regenerative biology, Li has managed to make strides in diverse areas, including drug delivery systems, bone tissue engineering, bioelectroceutics, and complex tissue models.

Furthermore, Chunmei Li’s work in limb regeneration is particularly noteworthy, showcasing the potential of innovative materials to overcome challenges in tissue repair and regeneration. Her dedication to research is reflected in her extensive publication record in elite scientific journals such as Nature Materials, Nature Reviews Materials, Nature Communications, and Advanced Materials. Additionally, several patented technologies stemming from her research have been successfully licensed to industry partners, demonstrating her commitment to translating scientific advancements into real-world applications.

Renata Micha, who serves as an adjunct associate professor at the Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, boasts a wealth of expertise in the realms of nutritional epidemiology and chronic disease research. With a concentrated focus on diet assessment methodologies and modeling the implications of dietary patterns on cardiometabolic health, Micha’s work stands out for its depth and relevance in today’s health landscape. She is particularly adept at conducting global dietary assessments across diverse population segments and determining causal relationships between diet and disease outcomes.

Her influence extends to evaluating nutrition-sensitive interventions for addressing public health challenges, particularly those related to diet and chronic diseases. Renata Micha has a prolific portfolio, with over 150 publications and an impressive citation count exceeding 160,000 in globally recognized journals, including the New England Journal of Medicine, The Lancet, Circulation, and PLoS Medicine. Micha’s continued research endeavors are instrumental in shaping nutritional guidelines that can inform public health policies and optimize health outcomes across communities.

In parallel, Dariush Mozaffarian, a distinguished cardiologist and public health scientist, serves as the director of the Food is Medicine Institute at Tufts University’s Friedman School. He has earned a reputation as a leading voice in the domain of nutrition science, catalyzing the integration of innovative food-based interventions within the U.S. healthcare framework. His advocacy for the Food is Medicine movement underscores the potential of nutritional strategies to transform health care by enhancing health outcomes and reducing expenditures associated with diet-related diseases.

Mozaffarian’s contributions to the scientific community are equally impressive, with an authorship of over 600 scientific publications that focus on critical nutritional priorities relevant to cardiometabolic health. His research delves into evidence-based policy initiatives that promote nutrition security, mitigate diet-related ailments, and foster health equity. By leading initiatives addressing the broader implications of food systems on public health and healthcare costs, he has become an influential advocate for systemic change in how nutrition is approached within health policy.

Tufts University’s recognition of these esteemed professors reflects a broader commitment to advancing research that not only enriches academic discourse but also has the potential to drive actionable change in society. The inclusion of Li, Micha, and Mozaffarian within this elite group of researchers underlines the importance of fostering an environment where innovative research can thrive. Their work is not only academically rigorous but deeply impactful, as it aims to address pressing health challenges faced globally.

As the analysis of their work underscores, the papers evaluated for this year’s listing were those published and cited from 2014 to 2024, highlighting the ongoing relevance and significance of their research contributions. The methodology behind determining the most highly cited researchers is reflective of the contemporary research landscape, where citation metrics serve as a proxy for the influence and importance of scholarly work across disciplines.

Bernard Arulanandam, Tufts’ vice provost for research, articulated the significance of this recognition, emphasizing how it showcases the global impact of the university’s research endeavors. His congratulatory remarks to the featured faculty members illustrate the pride associated with the institution and its commitment to advancing knowledge that can directly benefit communities and influence future generations of researchers.

In conclusion, the achievements of Chunmei Li, Renata Micha, and Dariush Mozaffarian encapsulate the dynamic nature of research at Tufts University. Their contributions serve as a beacon of excellence, motivating both current and aspiring researchers to strive for impactful work that resonates within and beyond academic circles. As these faculty members continue to push the boundaries of their respective fields, the implications of their research will undoubtedly shape the future of public health, nutrition, and biomedical engineering, thereby enhancing the quality of life and health outcomes for countless individuals globally.

Subject of Research: Highly Cited Researchers
Article Title: Tufts Professors Recognized as Leading Researchers in Global Rankings
News Publication Date: October 2023
Web References: www.clarivate.com, www.tufts.edu
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Image Credits: Photo collage: Momo Shinzawa

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Breakthrough at SNU: Pioneering Technology Enables 3D Visualization of Atomic Structural Changes in Nanoparticles

Bethany Barker — Tue, 04 Mar 2025 16:13:46 +0000

A groundbreaking advancement in nanotechnology has been achieved by a dedicated research team at the Seoul National University College of Engineering, led by Professor Jungwon Park. Their innovative work focuses on the detailed observation of three-dimensional atomic structural changes in nanoparticles, utilizing a newly developed technique known as time-resolved Brownian tomography. This technology represents a significant leap in the microscopy field, addressing an enduring challenge that has puzzled scientists for years and remained elusive even to Nobel laureates.

Nanoparticles play a critical role in a variety of high-tech applications ranging from energy storage to drug delivery systems. In the rapidly evolving fields of materials science, the ability to observe and manipulate these tiny structures can lead to breakthroughs in how we understand their reactivity and properties. Traditional methods of studying nanoparticles often involve static imaging in vacuum environments, failing to capture the dynamic behavior that occurs in liquid settings. This limitation highlights the pressing need for a technique that can provide real-time insights into the atomic-scale changes of nanoparticles while they are in their natural, fluid environments.

The challenges inherent in observing nanoparticles at the atomic level arise from their minuscule size, often measuring just a few nanometers—equivalent to a billionth of a meter. This unique size grants them extraordinary physical and chemical properties, making it essential to monitor their structural changes as these can dramatically affect their functionality. Existing techniques typically offer a limited view, either examining fixed samples or averaging data from multiple particles, rendering a full understanding of individual nanoparticles almost impossible. Therefore, the emergence of time-resolved Brownian tomography marks a transformative shift in the capability to analyze such structures in real-time.

Building upon the foundational work of cryo-transmission electron microscopy (cryo-TEM), for which a team of scientists was awarded the Nobel Prize in Chemistry in 2017, Professor Park’s research team has taken a pioneering step toward advancing our exploration of nanostructures in liquid. By integrating graphene into their liquid transmission electron microscopy (liquid TEM) technique, they have enabled unprecedented three-dimensional visualization of nanoparticles suspended in solution. This innovation lays the groundwork for a more dynamic understanding of how nanoparticles behave, opening pathways to new materials and applications.

One of the standout features of the time-resolved Brownian tomography technique is its ability to capture the random motion of nanoparticles as they move through a liquid medium. By employing advanced imaging techniques, researchers can track the movement of these particles from multiple angles, reconstructing their three-dimensional trajectories over time. Unlike conventional transmission electron microscopy, which may analyze fixed, vacuum-exposed specimens, this new approach allows scientists to witness the real-time changes that occur within the nanoparticles, such as attachment and detachment of atoms in liquid environments.

In their recent study, the research team focused on platinum nanoparticles, renowned for their catalytic properties. They examined the atomic-level structural changes that occur during the etching process, a form of chemical corrosion that is critical in various chemical reactions and material applications. The researchers successfully distinguished key moments in the atomic behavior of these nanoparticles, such as the desorption of surface atoms and their rearrangement, revealing deep insights into the dynamics of these particles when subjected to environmental shifts.

As the etching process unfolded, researchers found that when platinum nanoparticles shrank to approximately 1 nm, a surprising disordered phase emerged. This observation challenges the assumptions that platinum nanoparticles, which are typically ordered in structure, would behave similarly regardless of their size. The novel findings suggest that the characteristics exhibited by nanoparticles at the nanoscale can differ significantly from their larger counterparts—information critical to devising new methods for manipulating and utilizing nanomaterials.

Beyond their implications in fundamental research, the time-resolved Brownian tomography technique has the potential to revolutionize industries reliant on nanomaterials. This includes the development of advanced catalysts for hydrogen fuel cells, which are gaining prominence due to the urgent need for cleaner energy solutions. By understanding the structural changes that affect catalytic performance over time, researchers can engineer new materials that are more efficient and effective in energy applications.

As the research unfolds, Professor Park underscores the importance of this technique not only for theoretical advancement but also for practical applications. The capability to visualize and understand the intricate behaviors of nanoparticles could streamline the design process for various advanced materials used in energy technology, medicine, and environmental solutions. Each observation provides a piece of the puzzle, which ultimately contributes to creating more effective systems capable of addressing global challenges.

The lead author of the study, Researcher Sungsu Kang, highlights the significance of capturing real-time atomic-level changes, particularly in the dynamic environments that reflect real-world conditions. This pioneering work shifts the narrative surrounding nanoparticle behavior, offering a glimpse into phenomena that were previously obscured by traditional methods of analysis. As Sungsu continues to refine the technique, the research team’s collective efforts pave the way for broader applications of time-resolved Brownian tomography, potentially impacting various scientific fields.

In conclusion, the introduction of time-resolved Brownian tomography serves as a catalyst for innovation in understanding nanostructures. The research team’s work not only enhances our comprehension of how nanoparticles function but also sets a new standard for analyzing dynamic systems in fluid environments. As these methods become more refined and widely adopted, they promise to unlock new horizons in materials science and nanotechnology, contributing to the design of superior systems and addressing pressing global challenges.

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