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Spiropyran thin film with capability of light-triggered molecular level self-healing has been successfully designed and fabricated by Langmuir-Blodgett technology. Various remarkable properties of thin film shrinkage or height increase or self-healing nano-defect recovery under different fabrication conditions have been observed. In addition, further evidence of the self-healing, which resulted from the movement of spiropyran molecules (such as "standing" "lie-down" and "tip-toes" etc.) on the substrate, has also been observed from the reversible contact angle change of the thin film.

Aspernigrin C (Ia) and D (Ib) are isolated as new compounds together with six known compounds from the marine-derived fungus Aspergillus niger SCSIO Jcsw6F30.

Accurate lineage tracing is crucial to understanding of developmental and stem cell biology, but is particularly challenging for transient and highly dispersive cell-types like the neural crest (NC). The authors report in this article a new zebrafish transgenic line Tg(-4725sox10:Cre)ba74. This line expresses Cre under the control of a well-characterized portion of the sox10 promoter and, by crossing to a floxed-reporter line, the authors show in this article that expression in this line is consistent with those described for GFP reporter lines using the same promoter. Reporter expression is readily detected in patterns consistent with the early expression domains. Thus, the authors see all major groups (pigment, neural, and skeletal) of NC-derived cell-types, as well as cell-types derived from the known non-NC sites of sox10 expression, including otic epithelium and oligodendrocytes. This line provides an invaluable tool for the further study of zebrafish NC development and NC-derived stem cells as well as that of the otic vesicle and oligodendrocytes. genesis 50:750–757, 2012. © 2012 Wiley Periodicals, Inc.

Therefore,oneoftheimportantchallengesinfabricatingmetallicmicrostructures is to find an easy, repeatable, and controllablemethod to meet the increasing demands in optoelectronics andplasmonics.In this communication, we report a new template-assistedelectrochemical approach to fabricate arrays of metallic nano-wires. Unlike conventional template-assisted growth, where thegenerated wires are confined by the size of template, in ourcase the width of the metallic wires can be tuned by changing thecontrol parameters of electrodeposition. By imprinting polymerstripes ona silicon surface, the concave corner of polymerstripesandsiliconsubstrateprovidesapreferentialnucleationsitefortheformation of metal nanowires. The width of wires can be tunedfrom 25nm to a few hundred nanometers. Further, wedemonstrate that this method can be applied for fabricatingmore complicated structures rather than straight lines only.In our experiments, the metallic nanowires are electrodepo-sited with the help of polymer stripes embossed on siliconsurfaces. To form the patterned substrate, a thin film ofpoly(methylmethacrylate) (PMMA) (mr-I 7030E M