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Nanostructured gold films exhibiting almost complete absorption of light at visible wavelengths

Frontiers of Chemical Science and Engineering 2018年第2期12卷 247-251页

作者： Hanbin Zheng christine picard Serge Ravaine CNRS CRPP UMR 5031 Universite de Bordeaux F-33600 Pessac France

Nanostructured known to exhibit properties metal surfaces have been that deviate from that of the bulk material. By simply modifying the texture of a metal surface, various unique optical properties can be observed. In this paper, we present a simple two step electrochemical process combining electrodeposition and anodization to generate black gold surfaces. This process is simple, versatile and up-scalable for the production of large surfaces. The black gold films have remarkable optical behavior as they absorb more than 93% of incident light over the entire visible spectrum and also exhibit no specular reflectance. A careful analysis by scanning electron microscopy reveals that these unique optical properties are due to their randomly rough surface, as they consist in a forest of dendritic microstructures with a nanoscale roughness. This new type of black films can be fabricated to a large variety of substrates, turning them to super absorbers with potential applications in photovoltaic solar cells or highly sensitive detectors and so on.

关键词： nanostructuration light absorption coating gold electrodeposifion anodization

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Amplified fragment length polymorphism analysis supports the valid separate species status of Lucilia caesar and *** (Diptera: Calliphoridae)

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Forensic Sciences Research 2018年第1期3卷 60-64页

作者： christine J.picard Jeffrey D.Wells Anne Ullyot Knut Rognes Department of Biology&Forensic and Investigative Sciences Program Indiana University-Purdue University IndianapolisIndianapolisINUSA Department of Biological Sciences&International Forensic Research Institute Florida International UniversityMiamiFLUSA Biological Sciences University of ChicagoChicagoILUSA Department of Early Childhood Education Faculty of Arts and EducationUniversity of StavangerStavangerNorway

Common DNA-based species determination methods fail to distinguish some blow flies in the forensically and medically important genus Lucilia *** is a practical problem,and it has also been interpreted as casting doubt on the validity of some morphologically defined *** example is Lucilia illustris and ***,which co-occur in Europe whilst only *** has been collected in North *** that these species shared both mitochondrial and nuclear gene sequences,along with claims that diagnostic morphological characters are difficult to interpret,were used to question their separate species *** report here that amplified fragment length polymorphism profiles strongly support the validity of both species based on both assignment and phylogenetic analysis,and that traditional identification criteria based on male and female genital morphology are more reliable than has been claimed.

关键词： Forensic science forensic entomology Calliphoridae Lucilia caesar Lucilia illustris taxonomy AFLP analysis

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