Details

Autor(en) / Beteiligte

• Urch, Henning
• Franzka, Steffen
• Dahlhaus, Daniel
• Hartmann, Nils
• Hasselbrink, Eckart
• Epple, Matthias

Titel

Preparation of two-dimensionally patterned layers of functionalised calcium phosphate nanoparticles by laser direct writing

Ist Teil von

• Journal of materials chemistry, 2006-01, Vol.16 (19), p.1798-1802

Erscheinungsjahr

2006

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Calcium phosphate nanoparticles were functionalised using suitable polymeric additives and electrophoretically deposited on titanium and silicon substrates. Subsequently the coated substrates were patterned with a focused beam of an argon ion laser at a wavelength of 514 nm. Depending on the incident laser power and the writing speed, different processes were observed. At high laser power and writing speed, the particle layer was locally removed down to the substrate ('laser cleaning'). In contrast, at low laser power and writing speed, the particles melted and formed larger structures. The width of the laser written lines is of the order of the laser spot size (about 3 )tm). This approach opens a way to two-dimensionally structured layers of nanoparticles with a predefined thickness.