Safe and effective high explosives are critical to Lawrence Livermore National Laboratory’s (LLNL) mission of stockpile stewardship. It is relatively simple to study the composition of such material before a detonation or examine the soot-like remnants afterward. But the chemistry in between, which dictates much of the detonation process, evades experimental interrogation as it passes by in a few nanoseconds or less.
In a study published in the Proceedings of the National Academy of Sciences, researchers from SLAC National Accelerator Laboratory and LLNL triggered a slow decomposition of a high explosive and measured the effects on the molecules within it. The work provides the proof of concept for a process that could be extended to examine ultra-fast dynamic chemistry during detonations and illuminates intermediate structures that have never been experimentally seen before.
At the Stanford Synchrotron Radiation Lightsource, the team used X-rays to both trigger the chemical reactions involved in decomposition and measure the results.
]]>In a paper published in the journal Nature Communications, biomedical engineers have shown how two brain regions quickly adapt to shift focus from one planned destination to another.
Stephanie Prince explains her research with a scenario many Atlantans can relate to. Imagine you’re driving to the Atlanta airport to pick up a friend. They call to say they’re in the terminal—but they’re not sure which one. North, maybe? You head in that direction through the maze of roads around the airport.
Then they call back. They’re actually in the South Terminal. So you make a quick mental adjustment and switch your route to arrive at the correct side of the airport.
]]>Metal-organic frameworks (MOFs) are characterized by high porosity and structural versatility. They have enormous potential, for example, for applications in electronics. However, their low electrical conductivity has so far greatly restricted their adoption.
Using AI and robot-assisted synthesis in a self-driving laboratory, researchers from Karlsruhe Institute of Technology (KIT), together with colleagues in Germany and Brazil, have now succeeded in producing an MOF thin film that conducts electricity like metals. This opens up new possibilities in electronics and energy storage —from sensors and quantum materials to functional materials.
The team reports on this work in the Materials Horizons journal.
]]>An international team of scientists has developed a biodegradable material that could slash global energy consumption without using any electricity, according to a new study published today.
The bioplastic metafilm—that can be applied to buildings, equipment and other surfaces—passively cools temperatures by as much as 9.2°C during peak sunlight and reflects almost 99% of the sun’s rays.
Developed by researchers from Zhengzhou University in China and the University of South Australia (UniSA), the new film is a sustainable and long-lasting material that could reduce building energy consumption by up to 20% a year in some of the world’s hottest cities.
]]>Amid growing policy momentum, Carbon Management Solutions (CMS), including Carbon Capture, Utilization and Storage (CCUS), clean hydrogen, and emerging carbon markets, are gaining critical support. This report examines the evolving landscape of CMS, highlighting emerging value chains integration and novel business models.
]]>A longstanding mystery of the periodic table involves a group of unique elements called lanthanides. Also known as rare earth elements, or REEs, these silvery-white metals are challenging to isolate, given their very similar chemical and physical properties. This similarity makes it difficult to distinguish REEs from one another during extraction and purification processes.
]]>Cells depend on the precise reading of DNA sequences to function correctly. This process, known as gene expression, determines which genetic instructions are activated. When this fails, the wrong parts of the genome can be activated, leading to cancers and neurodevelopmental disorders.
Scientists at the University of Geneva (UNIGE) have identified two proteins that play a key role in regulating this essential mechanism, paving the way for promising new treatments that could be more effective and less toxic than those currently available. Their findings are published in Nature Communications.
Human DNA contains over 20,000 genes and would stretch nearly two meters if fully uncoiled. To fit this enormous amount of information into a tiny space within a cell—just 10 to 100 micrometers in diameter—it must be tightly compacted. This is the job of chromatin, a complex of proteins that packages and condenses DNA within the cell nucleus.
]]>A study published in Astronomy & Astrophysics by a researcher from the Xinjiang Astronomical Observatory (XAO) of the Chinese Academy of Sciences has provided new insights into the phenomenon of “pulse nulling”—a sudden cessation of the entire radio pulsed emission observed in over 200 pulsar manifests.
This event, which can last from a few rotations to several minutes, is suggested to be random, but its statistical distribution may hint at deeper patterns in pulsar emission behavior.
Pulse nulling is quantified by the nulling fraction (NF), defined as the proportion of pulses during which no detectable emission occurs. While NF varies from one pulsar to another, recent studies demonstrate a decreasing number of pulsars with increasing NF, suggesting certain underlying patterns for nulling.
]]>Only a fraction of students know quantum information science exists. By starting earlier, and lowering the barrier to entry, educators are building a new skills network.
]]>A research team led by SUTD has created nanoscale glass structures with near-perfect reflectance, overturning long-held assumptions about what low-index materials can do in photonics.
For decades, glass has been a reliable workhorse of optical systems, valued for its transparency and stability. But when it comes to manipulating light at the nanoscale, especially for high-performance optical devices, glass has traditionally taken a backseat to higher refractive index materials. Now, a research team led by Professor Joel Yang from the Singapore University of Technology and Design (SUTD) is reshaping this narrative.
With findings published in Science Advances, the team has developed a new method to 3D-print glass structures with nanoscale precision and achieve nearly 100% reflectance in the visible spectrum. This level of performance is rare for low-refractive-index materials like silica, and it opens up a broader role for glass in nanophotonics, including in wearable optics, integrated displays, and sensors.
]]>