News Column

Findings from Macquarie University Broaden Understanding of General Science

May 30, 2014

By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Science. According to news reporting originating from North Ryde, Australia, by NewsRx correspondents, research stated, "Optical techniques have advanced considerably in recent years to enable processing of surfaces with a resolution less than the wavelength of light. Despite the highly selective nature of light-matter interactions, however, efforts to increase resolution to the scale of single atoms are hampered by rapid and efficient dissipation of the absorbed energy to the surrounding matrix."

Our news editors obtained a quote from the research from Macquarie University, "Here we show that two-photon surface excitation using ultraviolet light provides a method for selectively removing carbon from diamond surfaces. Polished surfaces etched by this method develop ultra-deep subwavelength structures with morphologies dependent on the polarization of the incident laser with respect to the crystal axes."

According to the news editors, the research concluded: "As well as revealing a practical and versatile method for nano-patterning of diamond surfaces, we show that the results comprise mesoscopic evidence for bond scission via a highly localized optical interaction that may lead to the development of new optical approaches for ultra-nanoscale (< 10 nm) surface structuring."

For more information on this research see: Two-photon polarization-selective etching of emergent nano-structures on diamond surfaces. Nature Communications, 2014;5():1-7. Nature Communications can be contacted at: Nature Publishing Group, Macmillan Building, 4 Crinan St, London N1 9XW, England. (Nature Publishing Group -; Nature Communications -

The news editors report that additional information may be obtained by contacting A. Lehmann, Macquarie University, Dept. of Phys & Astron, ARC Center Engn Quantum Syst, N Ryde, NSW 2109, Australia. Additional authors for this research include C. Bradac and R.P. Mildren (see also Science).

Keywords for this news article include: Science, North Ryde, Australia and New Zealand

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Source: Science Letter

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