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Article Dans Une Revue ACS Applied Nano Materials Année : 2021

Second-Harmonic Generation of Halloysite Nanotubes for Bioimaging

Résumé

This Letter reports the first characterization of nonfluorescent halloysite nanotubes (HNTs) by multiphoton microscopy via their endogenously generated second-harmonic (SH) resonance. The unveiled discovery that HNTs generate a SH signal in the nanoscale regime is supported by studies of the signal's propagation, polarization, and coherence properties and, finally, is directed toward the understanding of the origin of signal's generation from the nanoparticle's aluminosilicate skeleton. The study is significant, since it sheds light on halloysite nanotube technological applications in various domains, including alternative bioimaging, biosensing, and noninvasive biomedicine, as well as possibly nonlinear spectroscopy, optoelectronics, and many others.
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Dates et versions

hal-03207563 , version 1 (26-07-2021)

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Katarzyna Fidecka, Nicola Rotiroti, Jessica Giacoboni, Fernando Cámara, Matthieu Réfrégiers, et al.. Second-Harmonic Generation of Halloysite Nanotubes for Bioimaging. ACS Applied Nano Materials, inPress, ⟨10.1021/acsanm.1c00776⟩. ⟨hal-03207563⟩
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