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Imaging System Free of Dyes and Pigments - Study of the Structural Color of Organisms -

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Structural color is of significant research interest as it may yield novel coloring systems that use neither dyes nor pigments. The origin of their coloring principle is their extremely minute physical structures, the sizes of which are comparable to the wavelengths of light. Structural color is observed in many organisms such as insects, shells, and birds, and models of their coloring mechanisms have been proposed. This study aims to confirm the mechanisms of the structural color of different organisms. Coloring mechanisms of a Jewel beetle, a Morpho butterfly, a Turban shell, and a Peacock, for which models have been suggested, are verified by observing their colors when (1) the colored surfaces are immersed in two liquids with of different refractive indices, and (2) through a polarizing filter. The results invalidate one of the conventional explanations for the jewel beetle: a grating structure on a Jewel beetle was not agreed by our experimental results. For the Morpho butterfly, the results suggest a better explanation, a grating structure, than the conventional one: multilayer reflection. This decision is supported by the results of a spectrum analysis. Our approach to the examination of structural color mechanisms can be expected to suggest new imaging systems that are completely different from the systems in current use.
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Document Type: Research Article

Publication date: January 1, 2003

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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