AUTHOR=Sousa Frederico B. , Lafeta Lucas , Fonseca Gladystone R. , de Paula Ana M. TITLE=Nonlinear optical imaging of two-dimensional nanomaterials JOURNAL=Frontiers in Nanotechnology VOLUME=7 YEAR=2025 URL=https://www.frontiersin.org/journals/nanotechnology/articles/10.3389/fnano.2025.1537299 DOI=10.3389/fnano.2025.1537299 ISSN=2673-3013