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Skip to content THE SOURCE Close TopicsTopics Arts & Culture Business & Entrepreneurship Campus & Community Humanities & Society Medicine & Health Science & Technology SchoolsSchools Arts & Sciences Brown School McKelvey School of Engineering Olin Business School Sam Fox School of Design & Visual Arts School of Continuing & Professional Studies School of Law School of Medicine PublicationsPublications Newsroom The Record Washington Magazine Search Menu Search for: Search Close THE RECORD Sections Announcements Notables Obituaries Research Wire The View From Here Washington People Tiny displacements, giant changes in optical properties By Shawn Ballard May 16, 2024 SHARE A vector map showing picometer-scale displacements of titanium atoms overlaid onto a scanning transmission electron micrograph that shows the position of different atomic columns. The direction and magnitude of atomic displacements are represented by arrows; direction is also indicated by color. (Image: Rohan Mishra and Jayakanth Ravichandran) Watch out, Marie Kondo. While we usually think of disorder as a bad thing, a team of materials science researchers led by Rohan Mishra, from Washington University in St. Louis, and Jayakanth Ravichandran, from the University of Southern California, have revealed that — when it comes to certain crystals — a little structural disorder might have big impacts on useful optical properties. In a study published online in March in Advanced Materials, first authors Boyang Zhao, a USC graduate student in materials science working with Ravichandran, and Guodong Ren, a graduate student working with Mishra in WashU’s Institute of Materials Science and Engineering, described a new pathway to obtain novel optical and electronic properties from structural disorder. They found that tiny displacements of just a few picometers — that’s 100,000 times smaller than the thickness of a sheet of paper — in the atomic structure of a crystal could have minimal impacts on optical properties in one direction but produce giant functional enhancements when viewed from another angle. In this case, the refractive index of the material, or how much light bends or deviates from its original path when is passes through, changed dramatically with atomic disorder. Such functional enhancements could have practical applications in imaging, remote sensing and even medicine. By controlling the degree of atomic disorder to achieve desired optical properties, the researchers anticipate developing crystals that enable advanced infrared imaging in low-light conditions, improving the performance, for example, of autonomous vehicles driving at night or of medical imaging devices. Read more on the McKelvey School of Engineering website. SHARE Media Contact  Leah Shaffer SectionsResearch Wire TopicsEngineeringScience & Technology Schools McKelvey School of EngineeringRead more stories from McKelvey School of EngineeringVisit McKelvey School of Engineering Leave a Comment Comments and respectful dialogue are encouraged, but content will be moderated. Please, no personal attacks, obscenity or profanity, selling of commercial products, or endorsements of political candidates or positions. We reserve the right to remove any inappropriate comments. We also cannot address individual medical concerns or provide medical advice in this forum. You Might Also Like Using machine learning to boost amorphous metals November 3, 2023 Published In Record Synthetic biology yields easy-to-use underwater adhesives November 16, 2021 Published In Newsroom Stories Some brain tumors may be linked to head injury, mouse study suggests  May 7, 2024 Published In Record Latest from the Record Announcements Parking shares latest update Staff leadership program applications due May 31 Peace Park planting May 18 Notables Bose named Fulbright Scholar Oppenheimer named Religion & Politics executive editor Lucey receives sleep science award  Obituaries Stan H. Braude, professor of practice in Arts &＃038; Sciences, 62 Liz Colletta, longtime accounting employee, 55 Eduardo Slatopolsky, professor emeritus of medicine, 89 Research Wire OpenAI awards grant to improve machine learning models Altered carbon points toward sustainable manufacturing Advancing robot autonomy in unpredictable environments The View From Here 06.19.24 05.31.24 05.15.24 Washington People Sadie Williams Clayton Caitlyn Collins Kim Thuy Seelinger Who Knew WashU? Who Knew WashU? 1.27.21 Who Knew WashU? 1.13.21 Who Knew WashU? 12.9.20 Publications Washington Magazine Newsroom Record Explore Bookshelf Video Gallery Connect Media Resources Contact Facebook Instagram ©2024 Washington University in St. Louis Go back to top