Direct observation of plasmonic hot spots from the second and third harmonic near-fields in two-dimensional gold nanotriangle arrays - Mejía-Salazar, Jorge Ricardo; Spada, Edna Regina; Freitas, Raul O.; Maia, Francisco Carlos Barbosa; Faria, Roberto Mendonça; Oliveira Junior, Osvaldo Novais de (Brazilian MRS Meeting, 2016)