Lixin Cao

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these topologies are difficult to fabricate with other litho-graphic techniques, such as photolithography. [10] Combined with our previous work, [5] which described methods to mold patterned composites of gels, the techniques discussed here allow the formation of structures that incorporate distinct populations of cells within or on the surface of a gel.(More)
Hematite (a-Fe 2 O 3) has demonstrated value as an important material component in several advanced technological applications, including heterogeneous catalysis, [1] photoelec-trochemistry, [2,3] dyes and stains, [4] magnetic data storage, [5] and room-temperature magnetic semiconductors. [6,7] The structure and properties of hematite also have critical(More)
Highly ordered TiO 2 nanotube arrays on Ti substrates were prepared by an electrochemical anodization process in a mixture of glycerol and water containing 0.5 wt% NH 4 F and then thermally annealed from 400 °C to 600 °C. The sample structures were characterized by scanning electron microscopy and X-ray diffraction measurements, where the nano-tube pore(More)