RT Conference Proceedings
T1 Spectral identification in the attogram regime through laser induced breakdown spectroscopy of single optically-trapped nanoparticles in air
A1 Laserna-Vázquez, José Javier
A1 Purohit, Pablo
K1 Espectroscopía de láser
AB Current trends in nanoengineering are bringing along newstructures of diverse chemical compositions that need to bemeticulously defined to ensure their correct operation. Few methodscan provide the sensitivity required to carry out measurements onindividual nanosubjects without tedious sample pre-treatment or dataanalysis. In the present study, we introduce a pathway for the fullelemental identification of single nanoparticles that avoids suspensionin liquid media by means of optical trapping and laser-induced plasmaspectroscopy. We demonstrate spectroscopic detection andidentification of individual Cu nanoparticles of masses down to 73attograms and report, for the first time, stable optical trapping in airand manipulation of Cu particles from 25 to 70 nm in diameter. Wefound an increase in the absolute number of photons produced as sizeof the particles decreased; pointing towards a more efficient excitationof ensembles of only 7 x exp(-5) Cu atoms in the onset plasma.
YR 2017
FD 2017-10-20
LK http://hdl.handle.net/10630/14674
UL http://hdl.handle.net/10630/14674
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucia Tech
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026