Nanoparticle preparation of quinacridone and β-carotene using near-infrared laser ablation of their crystals

K. Yuyama, Sugiyama Teruki, T. Asahi, S. Ryo, I. Oh, Hiroshi Masuhara*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Quinacridone nanoparticles with a mean size of about 200 nm are successfully prepared using nanosecond near-infrared (NIR) laser ablation of its microcrystalline powders in heavy water. The absorption spectra of the formed colloidal solutions depend on the excitation wavelengths, which is eventually ascribed to number and energy of absorbed photons. β-carotene has low photostability and is easily decomposed upon UV/VIS laser ablation of its solid, while its nanoparticles are prepared utilizing this NIR laser ablation technique. The advantage of nanoparticle preparation by NIR laser ablation is discussed.

Original languageEnglish
Pages (from-to)591-596
Number of pages6
JournalApplied Physics A: Materials Science and Processing
Volume101
Issue number4
DOIs
StatePublished - 1 Dec 2010

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