Category Physics

Brandon Sweeney and Blake Tiepel working in the lab. Credit: Texas A&M University

A doctoral student in the Department of Materials Science and Engineering at Texas A&M University has developed a method to transform the landscape of 3D printing today by making 3D printed parts 275% stronger and immediately useful in real-world applications. 3D printed objects are comprised of many thin layers of materials, usually plastics, deposited on top of each other to form a desired shape. These layers are prone to fracturing, causing issues with the durability and reliability of the part when used in a real-world application, for example a custom printed medical device.

When Sweeney started his doctorate, he was working with Green in the Department of Chemical Engineering at Texas Tech University...

A two-dimensional slice of the potential energy surface for the K + KRb reaction.The reaction proceeds from right to left. In the intermediate region a deep well is clearly visible which leads to chaotic motion. Credit: Los Alamos National Laboratory

Researchers have performed the 1st ever quantum-mechanical simulation of the benchmark ultracold chemical reaction between potassium-rubidium (KRb) and a potassium atom, opening the door to new controlled chemistry experiments and quantum control of chemical reactions that could spark advances in quantum computing and sensing technologies. The research by a multi-institutional team simulated the ultracold chemical reaction, with results that had not been revealed in experiments.

“We found that the overall reactivity is largely insensitive to t...

Bismuth oxyiodide light absorbers. Credit: Steve Penney, University of Cambridge

Researchers have demonstrated how a non-toxic alternative to lead could form the basis of next-generation solar cells. The team from the University of Cambridge and the United States, have used theoretical and experimental methods to show how bismuth – the “green element” which sits next to lead on the periodic table, could be used in low-cost solar cells. Their results suggest that solar cells incorporating bismuth can replicate the properties that enable the exceptional properties of lead-based solar cells, but without the same toxicity concerns...

10 cubic millimetre cube in the rock, where only the nitrogen fluid blobs are being shown. They are coloured in accordance with how connected they are to other fluid blobs. For example, pink and red blobs are fully connected throughout. Purple are blobs connected only across a handful of pores, and blue nitrogen blobs only inhabit one pore.

The discovery could lead to a range of improvements including advances in Carbon Capture and Storage (CCS). This is where industrial emissions will be captured by CCS technology, before reaching the atmosphere, and safely stored in rock deep underground. Miles below the surface of Earth different types of fluids are flowing through the microscopic spaces between the grains inside rocks...