Liao, SuiyangLuo, ZhiMetternich, Jonas BastianZenobi, RenatoStellacci, Francesco2020-12-052020-12-052020-12-052020-11-2810.1039/d0nr05061jhttps://infoscience.epfl.ch/handle/20.500.14299/173884WOS:000591084100021In this work we show that it is possible to use MALDI-TOF as a tool to quantify the atomic composition and to describe the phase segragation of the surface of ligand-coated, bimetallic AuAg nanoparticles. Our investigation shows that AuAg nanoparticles of various compositions exhibit core-shell heterogeneity with surface enrichment of Ag. A Monte-Carlo type simulation demonstrates that the surface Au and Ag atoms arrange in a random fashion.Chemistry, MultidisciplinaryNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedChemistryScience & Technology - Other TopicsMaterials SciencePhysicsmass-spectrometryalloyperformanceionizationcatalystsmatrixco2cutext::journal::journal article::research article