This strange new phase of matter could transform quantum technology - Date: - May 30, 2026 - Source: - Brown University - Summary: - By stacking custom-designed silver nanoparticles like nanoscale LEGO bricks, scientists stabilized a mysterious crystal phase that had never been observed before. The material not only solves a longstanding puzzle in materials science but also exhibits promising quantum properties at room temperature. - Share: Researchers from Brown University and the University of Michigan have achieved something that scientists had only imagined until now. By carefully arranging tiny particles of silver into custom-built structures, they created and stabilized a previously elusive state of matter that had existed only in theoretical models. The work, published in Science, captures an intermediate structural state that appears during a transformation between two common crystal arrangements found in metals. In addition to revealing new details about how these transformations occur, the newly created material displays unusual optical behavior that could eventually be useful for quantum computing and other quantum information technologies. More broadly, the research demonstrates a new strategy for designing materials from the bottom up by assembling specially engineered nanoparticles into entirely new structures with customized properties. "Our work is a little bit like kids playing with LEGO blocks," said Ou Chen, an associate professor of chemistry at Brown and a corresponding author of the research. "We synthesize unique nanoscale building blocks and stack them into interesting structures. In this case, we were able to stabilize these theorized transitional structures and demonstrate important quantum optical properties." Capturing a Missing Step in Crystal Transformations Many metallic materials naturally organize their atoms into one of two crystal arrangements known as face-centered cubic (FCC) and body-centered cubic (BCC). In an FCC structure, particles are packed as tightly as possible. They occupy each corner of a