TY - GEN
T1 - Pulsed laser ablation in pressurized CO 2 for nanoparticles fabrication
AU - Machmudah, Siti
AU - Wahyudiono,
AU - Kuwahara, Yutaka
AU - Sasaki, Mitsuru
AU - Goto, Motonobu
PY - 2011
Y1 - 2011
N2 - Pulsed laser ablation in pressurized CO 2 has been applied for fabrication of gold and silver nanoparticles. The gold and silver nanoparticles were successfully generated with allowing the selective generation of clusters. Laser ablation was performed with an excitation wavelength of 532 nm. On the basis of the experimental result, both surface of ablated gold and silver plates and structure of gold and silver nanoparticles were significantly affected by the changes in CO 2 density. As increasing ablation time, plume deposited on the surrounding crater created by the ablation was clearly observed. In FE-SEM image of the generated gold nano-structured particles on silicon wafer, a network structure of smaller gold particles was fabricated. The network structure consists of gold nanoclusters with an average diameter of approximately 30 nm in ensembles of 300-800 nm length. The difference morphology of particles fabricated from silver plate was observed. Based on the results, this new method can also be used to obtain advanced nano-structured materials.
AB - Pulsed laser ablation in pressurized CO 2 has been applied for fabrication of gold and silver nanoparticles. The gold and silver nanoparticles were successfully generated with allowing the selective generation of clusters. Laser ablation was performed with an excitation wavelength of 532 nm. On the basis of the experimental result, both surface of ablated gold and silver plates and structure of gold and silver nanoparticles were significantly affected by the changes in CO 2 density. As increasing ablation time, plume deposited on the surrounding crater created by the ablation was clearly observed. In FE-SEM image of the generated gold nano-structured particles on silicon wafer, a network structure of smaller gold particles was fabricated. The network structure consists of gold nanoclusters with an average diameter of approximately 30 nm in ensembles of 300-800 nm length. The difference morphology of particles fabricated from silver plate was observed. Based on the results, this new method can also be used to obtain advanced nano-structured materials.
KW - gold
KW - nanoparticles
KW - pressurized and supercritical CO
KW - pulsed laser ablation
KW - silver
UR - http://www.scopus.com/inward/record.url?scp=84856944229&partnerID=8YFLogxK
U2 - 10.1109/TENCON.2011.6129219
DO - 10.1109/TENCON.2011.6129219
M3 - Conference contribution
AN - SCOPUS:84856944229
SN - 9781457702556
T3 - IEEE Region 10 Annual International Conference, Proceedings/TENCON
SP - 792
EP - 796
BT - TENCON 2011 - 2011 IEEE Region 10 Conference
T2 - 2011 IEEE Region 10 Conference: Trends and Development in Converging Technology Towards 2020, TENCON 2011
Y2 - 21 November 2011 through 24 November 2011
ER -