Traditional electronic devices rely fundamentally on the movement of electrons within semiconductor transistors, a process inherently limited by the maximum frequency that charge carriers can sustain. Overcoming these limits has long been a challenge for physicists and engineers seeking faster and more efficient computing architectures. This novel research sidesteps these constraints by harnessing oscillating light waves to manipulate electrons within a nanometric material, marking a paradigm shift from charge-based electronics to photonics-driven computation.

The team, led by Professor Giulio Cerullo at Politecnico di Milano, alongside key collaborators including Professors Stefano Dal Conte, Margherita Maiuri, and researchers Francesco Gucci and Mattia Russo, employed ultrashort laser pulses lasting just a few femtoseconds—millionths of a billionth of a second—to achieve coherent control over electron quantum states. This ultrafast manipulation occurs at rates exceeding 10 terahertz, which is more than 100 times faster than the frequencies attainable in state-of-the-art electronic circuits, heralding a quantum leap in operational speeds for information processing devices.

Central to this revolutionary technique is the use of tungsten disulfide (WS₂), a two-dimensional semiconductor that is only three atomic layers thick. Due to its unique quantum mechanical properties, WS₂ features electrons inhabiting two discrete energy valleys that represent distinct quantum states. These “valley” states form the basis of a new form of information encoding, often referred to as valleytronics, which offers an alternative to classic binary computing bits. By selectively exciting these valleys with precision-tailored light pulses, researchers can encode, manipulate, and read quantum information with extraordinary speed and fidelity.

The experimental setup involves choreographing a sequence of light pulses to perform fundamental logical operations analogous to those used in electronic circuits. The researchers succeeded in turning quantum information on and off, as well as coherently expanding it, thus effectively demonstrating ultrafast computational functions. Remarkably, these experiments were conducted at room temperature, using laser pulses that are readily generated with current laboratory technology, underscoring the method’s promise for practical and scalable applications.

Another salient aspect of the study is the assessment of quantum coherence lifetimes, a critical factor determining how long quantum information can be preserved in the material without degradation. Stability of valley states is essential for reliable computing operations, and the ability to measure and manipulate these parameters opens pathways for future optimization. Understanding coherence dynamics will underpin the design of devices that fully exploit the ultrafast capabilities demonstrated.

Franco Camargo from IFN-CNR emphasizes the broader implications and future challenges entailed by this proof of concept. While the results mark a pivotal advance, they also reveal an array of scientific and engineering hurdles to surmount before ultrafast valleytronic devices can compete with or complement conventional semiconductor technology. These challenges include scaling up the complexity of laser pulse sequences and integrating a larger number of quantum bits into coherent architectures.

The study represents a compelling fusion of quantum optics and condensed matter physics, highlighting the interplay between light-matter interactions at the nanoscale to achieve functionality previously deemed impossible. By pushing computational speeds into the terahertz regime, this work places photonics at the forefront of next-generation computing hardware innovation—one that could shatter existing speed ceilings and lead to drastically enhanced data processing capabilities.

Moreover, the approach holds potential significance beyond classical computation, suggesting new routes toward quantum computing platforms that leverage coherent control over valley degrees of freedom. The principles demonstrated in this research may inspire novel quantum information processing devices that harness ultrafast light-driven control mechanisms, positioning valleytronics as a promising contender within the emerging quantum technology landscape.

As researchers continue to refine the techniques and explore material platforms compatible with ultrafast valley manipulation, the envisioned outcome is a new class of optoelectronic devices that vastly outperform today’s electronics both in speed and energy efficiency. The fusion of lightwave electronics and quantum state control underscores a fundamental shift in how information technology might evolve over the coming decades.

In summary, this trailblazing study lays the groundwork for a future where computational operations are dictated by the speed of light oscillations, rather than the drift of electrical charges. By combining advanced photonics, material science, and quantum physics, the team at Politecnico di Milano and their collaborators have opened a new frontier in information processing that could redefine the capabilities and architecture of computers well into the 21st century and beyond.

Subject of Research: Not applicable
Article Title: Encoding and manipulating ultrafast coherent valleytronic information with lightwaves
News Publication Date: 9-Jan-2026
Web References: http://dx.doi.org/10.1038/s41566-025-01823-w
References: Study published in Nature Photonics, DOI: 10.1038/s41566-025-01823-w
Image Credits: Politecnico di Milano

Keywords: Photonics, Applied optics, Laser systems, Lasers, Quantum optics, Photoelectrons, Electrons, Electronic devices, Optoelectronics, Electronics, Quantum computing, Light matter interactions, Electronic circuits

The foundation for the BAMBI project was laid by Dr. Alberto Zanini, an experienced gynecologist who has worked in various underserved regions across Africa and Southeast Asia. His exposure to the realities of high maternal mortality rates galvanized him to seek solutions that could mitigate these risks. Recognizing the severity of postpartum hemorrhage, which claims an estimated 100,000 lives each year, Dr. Zanini conceptualized a device that could provide immediate assistance in such critical moments following childbirth. His vision attracted a multidisciplinary team from the Politecnico di Milano, bringing together experts in chemistry, materials, and engineering to transform his idea into a tangible solution.

At the heart of the BAMBI device is a kit comprised of essential components that include a connector, a rectal probe, a probe cover, and a saline solution bag, all of which are readily available in low-resource settings. The device’s design is striking not only for its ingenious engineering but also for its affordability and accessibility. The innovative patented connector allows for the safe assembly of the device, thereby streamlining its use. The simplicity of operation is particularly crucial; in resource-poor areas where medical personnel may be scarce, the device must be easy to use. The BAMBI kit is designed precisely with this in mind, offering both printed and video instructions to facilitate its deployment.

Maria Laura Costantino, a key figure in the BAMBI project and Professor in the Department of Chemistry, Materials and Chemical Engineering, articulates the project’s mission: to merge technological advancement with a strong social impact. The team chose to pursue a “social” patent, meaning that they collectively waived any rights to the patent. This landmark decision aims to guarantee the broadest possible access to the BAMBI device, facilitating its availability wherever it is needed most. The ethos behind the BAMBI project is not only to save lives but to revolutionize the approach to maternal health care in the most vulnerable communities.

The actual functionality of the BAMBI device lies in its design, which facilitates the effective treatment of uterine hemorrhage that may occur post-delivery. When there is excessive blood loss, the rectal probe is positioned within the uterus, and the attached probe cover is then inflated with saline solution. This inflation creates a balloon effect that exerts pressure on the uterine walls, effectively halting the flow of blood. This innovative engineering solution is swift to apply, putting it within reach of non-expert personnel who might be the first to respond in these critical situations.

Experimental studies conducted to assess the BAMBI device’s efficacy have yielded promising results. The functional testing and usability analyses have confirmed that even individuals without specialized medical training can successfully operate the device. This is particularly vital in regions where access to trained healthcare providers is limited. The capacity for non-experts to utilize the BAMBI kit means that it could potentially save lives in catastrophic scenarios where professional medical assistance might not be immediately available.

As the project approaches the manufacturing stage, dedicated efforts are underway to secure funding for the development of the BAMBI kit through proof-of-concept projects. Collaborating with initiatives like MUSA – Spoke 3 ‘Deep Tech: Entrepreneurship & Technology Transfer’, the researchers aim to mass-produce the device at an estimated cost of only $5. This price point is not only indicative of the project’s accessibility goals but also an essential aspect of its potential for widespread dissemination across regions grappling with inadequate health infrastructure.

The BAMBI project has not gone unnoticed; it has garnered recognition through awards like the Switch 2 Product grant from Politecnico di Milano in 2019 and the Polisocial Award in 2020. Additionally, the research and development processes have been documented in scholarly articles published in esteemed scientific journals, including Scientific Reports, which is part of the Nature portfolio. These academic contributions not only showcase the project’s progress but also highlight its significance in the ongoing discourse surrounding maternal health innovations.

With the imminent transition from laboratory development to real-world application, the BAMBI team’s work exemplifies a merging of innovative engineering with a profound commitment to social justice in healthcare. By shifting the focus to affordable solutions, they are not only addressing an urgent medical need but are also redefining the standards of medical device development to prioritize accessibility in under-resourced settings. The journey of the BAMBI device, from a concept borne out of necessity to a prototype ready for mass production, underscores the potential for collaborative research to yield life-saving solutions in the world of maternal health.

As the team prepares for clinical trials, they carry with them the hopes of countless mothers in vulnerable communities. The BAMBI kit represents a beacon of hope, promising to reduce the risk of postpartum hemorrhage, a condition that could otherwise result in tragic loss. The combination of sophisticated engineering, an empathetic design approach, and a commitment to social impact could well position BAMBI as a transformative force in maternal health care. With the world watching, the ongoing efforts of the Politecnico di Milano team are set to make waves beyond the confines of laboratory walls, with the potential to effect real change where it is needed most.

Through the innovations represented in the BAMBI kit, there is a growing notion that with the right scientific advancements, no mother should face the threat of postpartum hemorrhage alone. The collective aim is not only to create devices but also to foster a healthier future for mothers and children across the globe. As the BAMBI device transitions from an idea into a widely available solution, it offers a promising glimpse into a future where access to innovative medical solutions is no longer a privilege but a fundamental right.

In essence, the BAMBI project serves as a testament to the power of interdisciplinary collaboration in addressing pressing global health challenges. By combining the realms of technology, medicine, and social advocacy, the initiative exemplifies a holistic approach that prioritizes both human health and welfare. The enthusiasm surrounding the BAMBI kit is not just about technological advancement; it is about the societal impact that such innovations can foster, ultimately leading to safer childbirth experiences for mothers everywhere.

Subject of Research: Not applicable
Article Title: Low-Cost Device BAMBI: A Lifesaving Innovation for Postpartum Hemorrhage
News Publication Date: October 2023
Web References: Not available
References: Not available
Image Credits: Credit: Politecnico di Milano

Keywords

Biomedical engineering, Health care, Human health, Maternal health, Medical device innovation, Postpartum hemorrhage, Affordable health solutions.

Published recently in the highly respected Journal of the American Chemical Society, this study details the first-ever demonstration of a catalyst material capable of switching between distinct chemical functionalities at the atomic level. By harnessing a ‘molecular switch’ mechanism, the catalyst toggles between two pivotal organic reactions — borylation and carbon-carbon (C-C) coupling. The ability to dynamically switch catalytic pathways holds significant promise for streamlining multi-step synthetic sequences typically reliant on separate catalysts and conditions, thus reducing waste and energy consumption.

At the core of this breakthrough is a palladium-based single-atom catalyst. The catalyst’s atomic palladium centers are intricately embedded within a bespoke organic scaffold designed to confer exceptional stability and precise control over the metal’s electronic environment. This unique architecture enables the catalyst to respond chemically to varying reaction parameters such as temperature, solvent polarity, or reactant composition. Such responsiveness allows selective engagement with either bioreaction pathways or C–C coupling mechanisms, two reactions fundamental to organic synthesis with broad applications in pharmaceuticals, agrochemicals, and material science.

The design rationale pivots on molecular-level control that mimics biological enzymes’ adaptability but with enhanced programmability and robustness. By tailoring the ligand environment around the palladium atom, the research team effectively created a switchable active site whose electronic properties—and consequently, reactivity—can be modulated on demand. This intelligent catalyst exhibits a level of versatility and selectivity previously unattainable with traditional heterogeneous or homogeneous catalysts, which are often locked into a static mode of operation.

Professor Gianvito Vilé, the lead investigator and a lecturer at the ‘Giulio Natta’ Department of Chemistry, Materials and Chemical Engineering at Politecnico di Milano, emphasizes the transformative potential of this adaptive catalyst. “We have engineered a chemical system capable of modulating its reactivity in a controlled and reversible manner, instilling intelligence into catalysis,” Vilé explains. “This work opens pathways to more sustainable chemical processes that minimize environmental impact while maximizing efficiency.”

In addition to the catalyst’s reaction-switching capability, the research highlights its impressive stability and recyclability. The single-atom framework resists aggregation or degradation over multiple catalytic cycles, ensuring consistent performance. Moreover, life cycle and ‘green chemistry’ assessments conducted alongside the experimental work demonstrate significant reductions in hazardous waste, toxic reagent usage, and energy input compared to conventional catalytic systems. This aligns with global efforts to transition toward greener industrial chemistries.

The catalyst’s efficacy was validated through a series of rigorous experimental protocols, including spectroscopic characterization, kinetic analyses, and reaction optimization studies. These methods confirmed that subtle changes in reaction conditions prompted well-defined shifts in catalytic pathways, affirming the precise tunability of the atomic active sites. Such fine control will allow chemists to design bespoke synthetic routes tailored exactly to desired product profiles, thereby increasing the sustainability and economic viability of complex molecule production.

Importantly, this achievement is not isolated to the Politecnico di Milano. It represents the culmination of an extensive international collaboration involving the University of Milan-Bicocca, the University of Ostrava in the Czech Republic, the University of Graz in Austria, and Kunsan National University in South Korea. Each institution contributed complementary expertise spanning catalyst synthesis, mechanistic study, and theoretical modeling, underscoring the interdisciplinary nature of modern catalysis research.

This research also bridges gaps between homogeneous and heterogeneous catalysis paradigms. Single-atom catalysts like the one developed provide the precision and uniformity typical of homogeneous systems while maintaining the robustness, recyclability, and operational convenience associated with heterogeneous catalysts. The controlled reconfigurability introduced here elevates single-atom catalysis into an era of programmable functionality—akin to having multiple catalysts bundled into a single material framework.

Looking forward, the potential applications of such adaptive catalysts are vast. In industrial organic synthesis, they could enable continuous processes that seamlessly shift between reaction modes without the need for catalyst replacement or extensive purification steps. This would drastically reduce production downtime and solvent waste. Beyond chemical manufacturing, similar design strategies could inspire smart catalytic materials for environmental remediation, renewable energy generation, and biomedical applications.

The study’s findings mark a compelling demonstration of chemistry’s advancing frontiers, where material design and molecular engineering converge to build catalysts with lifelike responsiveness. It paves the way toward next-generation chemical synthesis platforms anchored on sustainable principles, energy efficiency, and operational simplicity. The journey from fundamental discovery to commercial translation will undoubtedly inspire further research exploring the rich chemistry enabled by atomic precision and dynamic control.

This innovative catalyst exemplifies a leap forward in our capacity to finely tune reaction mechanisms at an atomic scale—offering a glimpse into a future where catalysts do more than accelerate reactions; they think, adapt, and evolve alongside the needs of chemical transformation.

Subject of Research: Not applicable

Article Title: An Adaptive Palladium Single-Atom Catalyst Enabling Reactivity Switching between Borylation and C–C Coupling

News Publication Date: 31 July 2025

Web References: 10.1021/jacs.4c17943

References:
Vitthal B. Saptal, Clara Saetta, Adriana Laufenböck, Martin Sterrer, Ik Seon Kwon, Andrea Lucotti, Matteo Tommasini, Ondřej Tomanec, Aristides Bakandritsos, Giovanni Di Liberto, Gianfranco Pacchioni, and Gianvito Vilé. Journal of the American Chemical Society 2025, 147 (22), 18524-18540, DOI: 10.1021/jacs.4c17943.

Image Credits: Politecnico di Milano

Keywords

Catalytic efficiency, Catalysis, Chemical engineering

At the forefront of this transformative research is a team comprised of talented scientists including Gabriele Spanò, Matteo Ferri, Raffaele Cheula, Matteo Monai, Bert M. Weckhuysen, and Matteo Maestri. They meticulously explored a process that converts carbon dioxide and hydrogen into methane, leveraging cutting-edge nickel nanoparticles. Their study, titled “Deciphering Size and Shape Effects on the Structure Sensitivity of the CO₂ Methanation Reaction on Nickel,” delves deep into the intricate relationship between the physical characteristics of these nanoparticles and the reaction rate for methanation, opening up new opportunities for sustainable energy production.

The Politecnico di Milano’s Laboratory of Catalysis and Catalytic Processes (LCCP) is recognized on a global scale as a leader in heterogeneous catalysis. Their research aims to transform CO₂, a notorious pollutant, into sustainable fuels. By focusing on the chemistries of pressing climate issues, LCCP shines a spotlight on the feasibility of utilizing waste gases as valuable resources rather than environmental burdens. The innovative approach taken in this study not only adds to the existing body of knowledge but also proposes significant practical applications for reducing atmospheric CO₂ levels.

Employing a combination of atomistic simulations alongside experimental methodologies, the research team discovered that specific attributes of nickel nanoparticles—particularly their size and shape—perform a critical role in enhancing the efficiency of the methanation process. Their algorithmic modeling and experimental analyses together have helped clarify a previously contentious debate within the scientific community regarding the optimal conditions for the methanation of CO₂, which has implications that reach far beyond this immediate study.

Beyond merely advancing our understanding of nickel-based catalysis, this study lays a robust foundation for optimization in an array of other related industrial processes, including ammonia synthesis and the Fischer–Tropsch synthesis, both renowned for their energy-intensive characteristics. These findings illuminate a pathway not just for cleaner fuel production via methanation, but also for broader applications of catalysis in various sectors.

Lead author Gabriele Spanò, a PhD candidate in the Department of Energy at Politecnico di Milano, expressed the significance of the research, stating, “Understanding the role of nanoparticle shape and size allows us to design more efficient catalysts. It’s a vital step in treating CO₂ as a resource rather than waste to be mitigated.” This perspective underlines a paradigm shift—changing how industries can conceptualize emissions, viewing them as feedstocks for innovation rather than merely pollutants that require disposal.

Matteo Maestri, a full professor at Politecnico di Milano and coordinator of the LCCP, emphasized the synergistic effects of experimental and theoretical approaches in tackling complex real-world challenges. He remarked, “This work shows that combining experimental evidence with advanced modelling can tackle complex, real-world challenges. The methodologies applied are the result of years of development in atomistic analysis for catalytic systems.” This assertion speaks volumes about the importance of interdisciplinary collaboration and the cross-pollination of ideas in addressing the compromises of modern energy practices.

Ultimately, the study provides invaluable guidelines and insights that demystify the avenues for developing catalytic materials aimed at ambient CO₂ conversion. These innovations are poised to make meaningful contributions toward the energy transition, laying the groundwork for technologies that can integrate seamlessly into existing industrial operations while significantly reducing our carbon footprint.

As global temperatures continue to rise and the impacts of climate change become more pronounced, it is evident that research such as that presented by Politecnico di Milano is essential. This study not only contributes to the scientific community but also reinforces the urgent need for solutions that reconcile industrial growth with environmental stewardship. The conversion of CO₂ into methane could become a vital tool for industries striving to meet decreasing emissions targets while simultaneously enhancing their energy portfolios.

Moreover, the implications of this research ripple outward into societal realms, advocating for a sustainable future predicated on resourcefulness. By considering CO₂ as a potential resource rather than a liability, companies can adopt innovative technologies that foster a greener economy. As governments roll out policies and incentives for emission reductions, studies like this offer actionable pathways that align technological capabilities with ambitious climate goals.

The researchers’ findings transcend academic interest, presenting real-world implications that could redefine energy production and sustainability paradigms in the 21st century. At this juncture, it is crucial for stakeholders across sectors to engage with and support such pioneering research, ensuring that the transition to renewable energies is not only achievable but accelerated.

As we navigate through this critical juncture in our environmental journey, it is clear that comprehensive, actionable science will be required to make substantial progress. The promises of this study from Politecnico di Milano stand as a beacon of hope in our shared endeavor to limit CO₂ emissions and unlock new potential from waste gases. Through continued innovation in catalysis, we may very well witness the birth of a new era in sustainable energy.

In conclusion, the ongoing exploration and advancement in the methods of CO₂ conversion can potentially constitute a pivotal shift toward environmental restoration. The implications of this research extend beyond mere academic discourse; they represent a collective movement toward harnessing innovation that responds not just to energy needs but to the urgent question of climate change prevention.

Subject of Research: Not applicable
Article Title: Deciphering Size and Shape Effects on the Structure Sensitivity of the CO₂ Methanation Reaction on Nickel
News Publication Date: June 5, 2025
Web References: DOI
References: Not applicable
Image Credits: ACS Catalysis cover

Keywords

Carbon emissions, Atmospheric methane, Natural gas, Energy resources, Ecology, Industrial science.