| Title: |
Surface Modifications of Metals Induced by Soft X-Ray Laser Pulse Irradiations. |
| Authors: |
Masahiko ISHINO, Anatoly Ya. FAENOV, Momoko TANAKA, Noboru HASEGAWA, Masaharu NISHIKINO, Satoshi TAMOTSU, Tatiana A. PIKUZ, Toshiyuki OHBA, Takeshi KAIHORI, Tetsuya KAWACHI |
| Source: |
Journal of Laser Micro / Nanoengineering; 2012, Vol. 7 Issue 2, p147-151, 5p, 2 Black and White Photographs, 2 Diagrams |
| Subject Terms: |
X-ray lasers, SCANNING electron microscopes, SCANNING electron microscopy, NANOSTRUCTURED materials, INDUSTRIAL lasers, NANOMECHANICS, LASER microscopy, NANOTECHNOLOGY |
| Abstract: |
We irradiated the soft x-ray laser (SXRL) pulses having a wavelength of 13.9 nm, the duration time of 7 ps to aluminum (Al), copper (Cu) and gold (Au) surfaces. After the irradiation processes of SXRL beam with laser flux of ∼14 mJ/cm2 for Al case and of ∼21 mJ/cm2 for Cu and Au cases, the modified surfaces were observed with the visible microscope, the scanning electron microscope, and the atomic force microscope. The surface modifications caused by the SXRL irradiations were clearly seen on the surfaces, and it was found that the conical structures having around 100 nm in diameters were formed on the Al surface under a single pulse shot. The conical structures were formed in the features with the average depth of about 40 nm, and this value was in accordance with the attenuation length of the SXRL beam for Al. The modified structure on Al surface induced by SXRL pulse irradiations is different from those of Cu and Au surfaces. The modified structure formed on Al surface induced by the SXRL pulse exposure is interesting as the newly structure. Hence, the SXRL beam would be a candidate for a tool of micromachining, which enable to fabricate of three dimensional structures with nano-meter size on Al surface. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
