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Production of nanoparticles from natural hydroxylapatite by laser ablation.

Boutinguiza M, Comesaña R, Lusquiños F, Riveiro A, Pou J - Nanoscale Res Lett (2011)

Bottom Line: Laser ablation of solids in liquids technique has been used to obtain colloidal nanoparticles from biological hydroxylapatite using pulsed as well as a continuous wave (CW) laser.High resolution TEM showed that particles obtained by the use of pulsed laser were crystalline, while those obtained by the use of CW laser were amorphous.The shape and size of particles are consistent with the explosive ejection as formation mechanism.

View Article: PubMed Central - HTML - PubMed

Affiliation: Dpto, Física Aplicada, Universidad de Vigo, Lagoas-Marcosende, 9, Vigo 36310, Spain. mohamed@uvigo.es.

ABSTRACT
Laser ablation of solids in liquids technique has been used to obtain colloidal nanoparticles from biological hydroxylapatite using pulsed as well as a continuous wave (CW) laser. Transmission electron microscopy (TEM) measurements revealed the formation of spherical particles with size distribution ranging from few nanometers to hundred nanometers and irregular submicronic particles. High resolution TEM showed that particles obtained by the use of pulsed laser were crystalline, while those obtained by the use of CW laser were amorphous. The shape and size of particles are consistent with the explosive ejection as formation mechanism.

No MeSH data available.


SEM micrograph of micrometric particles obtained from fish bones by laser ablation in water using CW laser. Laser irradiance: 6 × 105 W/cm2.
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Figure 5: SEM micrograph of micrometric particles obtained from fish bones by laser ablation in water using CW laser. Laser irradiance: 6 × 105 W/cm2.

Mentions: The use of continuous wave Yb:YAG fiber laser at irradiances around 6 × 105 W/cm2 led to the formation of particles with spherical shape ranging from nanometric to micrometric size (Figures 4 and 5), but the predominance of the nanometric ones is evident from Figure 4. According to the results of the SAED performed on a group of this kind of particles they are amorphous. Nevertheless, the microanalysis performed on groups of these particles revealed the presence of the same elements of precursor material.


Production of nanoparticles from natural hydroxylapatite by laser ablation.

Boutinguiza M, Comesaña R, Lusquiños F, Riveiro A, Pou J - Nanoscale Res Lett (2011)

SEM micrograph of micrometric particles obtained from fish bones by laser ablation in water using CW laser. Laser irradiance: 6 × 105 W/cm2.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211317&req=5

Figure 5: SEM micrograph of micrometric particles obtained from fish bones by laser ablation in water using CW laser. Laser irradiance: 6 × 105 W/cm2.
Mentions: The use of continuous wave Yb:YAG fiber laser at irradiances around 6 × 105 W/cm2 led to the formation of particles with spherical shape ranging from nanometric to micrometric size (Figures 4 and 5), but the predominance of the nanometric ones is evident from Figure 4. According to the results of the SAED performed on a group of this kind of particles they are amorphous. Nevertheless, the microanalysis performed on groups of these particles revealed the presence of the same elements of precursor material.

Bottom Line: Laser ablation of solids in liquids technique has been used to obtain colloidal nanoparticles from biological hydroxylapatite using pulsed as well as a continuous wave (CW) laser.High resolution TEM showed that particles obtained by the use of pulsed laser were crystalline, while those obtained by the use of CW laser were amorphous.The shape and size of particles are consistent with the explosive ejection as formation mechanism.

View Article: PubMed Central - HTML - PubMed

Affiliation: Dpto, Física Aplicada, Universidad de Vigo, Lagoas-Marcosende, 9, Vigo 36310, Spain. mohamed@uvigo.es.

ABSTRACT
Laser ablation of solids in liquids technique has been used to obtain colloidal nanoparticles from biological hydroxylapatite using pulsed as well as a continuous wave (CW) laser. Transmission electron microscopy (TEM) measurements revealed the formation of spherical particles with size distribution ranging from few nanometers to hundred nanometers and irregular submicronic particles. High resolution TEM showed that particles obtained by the use of pulsed laser were crystalline, while those obtained by the use of CW laser were amorphous. The shape and size of particles are consistent with the explosive ejection as formation mechanism.

No MeSH data available.