Los Alamos National Laboratory Laboratory Directed Research and Development FY18 Annual Progress Report Managed by Triad National Security, LLC for the U.S. Department of Energy’s NNSA Disclaimer Los Alamos National Laboratory, an affirmative action/equal opportunity employer, is operated by Triad National Security, LLC for the National Nuclear Security Administration of U.S. Department of Energy under contract 89233218CNA000001. By approving this article, the publisher recognizes that the U.S. Government retains nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or to allow others to do so, for U.S. Government purposes. Los Alamos National Laboratory requests that the publisher identify this article as work performed under the auspices of the U.S. Department of Energy. Los Alamos National Laboratory strongly supports academic freedom and a researcher's right to publish; as an institution, however, the Laboratory does not endorse the viewpoint of a publication or guarantee its technical correctness. Issued March 2018 LA-UR-19-22804 Structure of this Report In accordance with U.S. Department of Energy Order (DOE) 413.2C, the Laboratory Directed Research and Development (LDRD) annual report for fiscal year 2018 (FY18) provides summaries of each LDRD-funded project for the fiscal year, as well as technical outcomes for completed projects. The report is organized as follows: Overview: An introduction to the LDRD program at Los Alamos National Laboratory (LANL), the program’s structure and strategic values, the LDRD portfolio management process, and highlights of outstanding accomplishments by LDRD researchers. Project Summaries: The project summaries are organized by Focus Areas – Complex Natural and Engineered Systems, Information Science and Technology, Materials for the Future, Nuclear and Particle Futures, and Science of Signatures. Project descriptions are included for continuing projects and project descriptions and technical outcomes are included for projects that ended in FY18. Los Alamos LDRD project identification numbers consists of three parts. The first is the fiscal year in which the project was initially funded, the second is a unique numerical identifier, and the third identifies the project component.