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Studies in the Area of Applied Surface Science Reported from Hokkaido University (Nanosecond pulsed laser induced self-organized nano-dots patterns...

July 4, 2014



Studies in the Area of Applied Surface Science Reported from Hokkaido University (Nanosecond pulsed laser induced self-organized nano-dots patterns on GaSb surface)

By a News Reporter-Staff News Editor at Science Letter -- Research findings on Science are discussed in a new report. According to news reporting originating in Hokkaido, Japan, by NewsRx journalists, research stated, "We report a technique for formation of two-dimensional (2D) nanodot (ND) patterns on gaillium antimoide (GaSb) using a nanosecond pulsed laser irradiation with 532 nm wavelength. The patterns have formed because of the interference and the self-organization under energy deposition of the laser irradiation, which induced the growth of NDs on the local area."

The news reporters obtained a quote from the research from Hokkaido University, "The NDs are grown and shrunken in the pattern by energy depositions. In the laser irradiation with average laser energy density of 35 mJ cm(-2), large and small NDs are formed on GaSb surface. The large NDs have grown average diameter from 160 to 200 nm with increase of laser pulses, and the small NDs have shrunken average diameter from 75 to 30 nm. The critical dot size is required about 107 nm for growth of the NDs in the patterns."

According to the news reporters, the research concluded: "Nanosecond pulsed laser irradiation can control the self-organized ND size on GaSb in air as a function of the laser pulses."

For more information on this research see: Nanosecond pulsed laser induced self-organized nano-dots patterns on GaSb surface. Applied Surface Science, 2014;307():24-27. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Surface Science - www.elsevier.com/wps/product/cws_home/505669)

Our news correspondents report that additional information may be obtained by contacting Y. Yoshida, Hokkaido University, Creat Res Inst Sousei, Kita Ku, Sapporo, Hokkaido 0010021, Japan. Additional authors for this research include K. Oosawa, J. Wajima, S. Watanabe, Y. Matsuo and T. Kato (see also Science).

Keywords for this news article include: Asia, Japan, Science, Hokkaido

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Source: Science Letter