An MHB amphiphile, N-stearoyl-l-glutamic acid (C(18)-Glu), forms disk- and fiber-like nanostructures respectively in hydrophilic and hydrophobic environments due to the inter- and intra-molecular H-bonds.

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Submicrometre-sized EuPO 4 hollow spheres were synthesised by utilising the colloidal spheres of Eu(OH)CO 3 as the sacrificial template, for the first time. The EuPO 4 hollow spheres were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and photoluminescence, respectively. The EuPO 4 hollow spheres exhibit red colour emission from 5 D 0-7 F J (J = 1, 2, 3, 4) transitions of the Eu 3+ ions. The obtained EuPO 4 hollow spheres may have potential applications in cell biology, drug release, diagnosis, due to the high chemistry stability and luminescence function.

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Controllable geometry silicon surfaces with superhydrophobicity are difficult to be fabricated without photolithography techniques. Superhydrophobic silicon surfaces with water contact angle larger than 150° and sliding angle less than 10° have been successfully fabricated by electrochemical etching strategy. Squarelike hole arrays with controllable geometries, especially ole width and depth were formed on silicon. Compared with the chemical composition, the obvious change of the hole size and surface roughness with etching time was actually the intrinsic factors for wetting regulation. The superhydrophobic silicon exhibited good stability even after storage in air and oil for 2 months. Moreover, the relatively stable superhydrophobic silicon exhibited good self-cleaning and water-proofing properties in air and oil.

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