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Dissolvable eosin has an approximate linear effect on surface hardness. Surface modification to the phthalocyanine blue powder is a feasible method to increase the hardness value of color stereolithography components. But sensibilization effect of the colorants also influences the curing process. It is concluded that incorporating colorant to liquid resin results in decreasing the surface hardness of components. Comparisons and discussions are carried out to explain the colorants’ effect. The change of hardness values is illustrated at certain mass percentages of colorant. Specimens are produced by laser curing colored resin and tested by MTSR Nano Indenter XP system. By contrast, the eosin powder is dissoluble and does not cause any deposits in the liquid resin. Therefore, surface modification is conducted to the phthalocyanine blue powder for improving wettability.

The phthalocyanine blue powder is insoluble and only dispersive in the solid-liquid mixture which results in deposits. Liquid photosensitive resin LPR2001 is mixed with two colorants (phthalocyanine blue and eosin powder) respectively before curing.

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In order to investigate colorants how to influence the surface hardness of colorful resin component, a procedure is proposed to fabricate testing specimens based on color stereolithography technology in this study. Surface hardness value is a commonly used indicator for describing the mechanical property of stereolithography parts. A geometric optimization process is followed to make data compatible for their formatting in compact and consistent VR standard to support protein internet browsing, protein VR visualization, protein 3D rapid prototyping and crystal sub-surface laser engraving. Their triangular mesh representation is next extracted from their scene graph. NURBS protein structures are then tessellated to form bio-molecular graphics models. To do so, we use non uniform rational B-spline surfaces (NURBS) to represent protein secondary structure and surface structure. Our aim is to devise a uniform solution for visualizing, browsing, interacting and prototyping of bio-molecules in various environments including internet, immersive virtual reality (VR), and rapid manufacturing. In the current paper, modelling and representing of bio-molecular structure for virtual and physical rapid prototyping is presented. Modelling, sharing and transmission of three-dimensional (3D) graphics data of biomolecules are essential in many bio visualization tasks from collaborative research and education to molecular simulation and drug discovery.