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Electroluminescence (EL) is the property of a semiconductor material pertaining to emitting light in response to an electrical current or a strong electric field. The purpose of this paper is to develop a flexible and lightweight EL device. Thermogravimetric analysis (TGA) was conducted to observe the thermal degradation behavior of NinjaFlex. Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid)-PEDOT:PSS-with ethylene glycol (EG) was coated onto polyester fabric where NinjaFlex was placed onto the coated fabric using three-dimensional (3D) printing and phosphor paste, and BendLay filaments were subsequently coated via 3D printing. Adhesion strength and flexibility of the 3D-printed NinjaFlex on textile fabrics were investigated. The TGA results of the NinjaFlex depict no weight loss up to 150°C and that the NinjaFlex was highly conductive with a surface resistance value of 8.5 ohms/sq.; the coated fabric exhibited a uniform surface appearance as measured and observed by using four-probe measurements and scanning electron microscopy, respectively, at 60% PEDOT:PSS. The results of the adhesion test showed that peel strengths of 4160 N/m and 3840 N/m were recorded for polyester and cotton specimens, respectively. No weight loss was recorded following three washing cycles of NinjaFlex. The bending lengths were increased by only a factor of 0.082 and 0.577 for polyester and cotton samples at 0.1-mm thickness, respectively; this remains sufficiently flexible to be integrated into textiles. The prototype device emitted light with a 12-V alternating current power supply.

The past decades of research on color and light yielded vast knowledge supporting their informed use in architectural design. While there currently exists a rich body of knowledge and methods geared to affect the perception of depth and form in tiled, opaque architectural surfaces, not many such methods have been developed for double‐curved, transparent, in‐mass colored surfaces. The perception of depth and form in these surfaces relies on a complex blend of parameters, such as color combinations, illumination source, angle of viewing, location of shadows and reflections, material thickness and grade of transparency. To determine the visual effects caused by some of these parameters, experiments based on visual observations were carried out involving handcrafted, in‐mass colored, undulant architectural surfaces. The insights from the experiments then served to develop four color strategies for architectural surface design harnessing the discovered effects in diverse ways. Through this, the study has sought first to observe and understand the effects of color and light in perceiving undulant surfaces, and second to highlight the potentials of harnessing these effects in the design of expressive architectural elements. The main insight from the study is that informed and deliberate application of color and light yields a wide range of potentially interesting perceptual effects in double‐curved architectural surfaces, such as spatial filtering, gradient screening, vibrant massing and animate reshaping. Such effects, applied in an architectural context, can help to fulfill the demand for physical environmental enrichment in the digital era.

In textile design, the characteristics of a textured surface are the result of the properties of the materials, the textile techniques used, and the colour mixtures associated with each technique. The perception of colour on textured textiles is dependent on the angles of viewing and incidence of light on the surface. Accordingly, when analyzing the perception of the colour of pile textiles such as velvet, we observe that the orientation of the piles on the surface affects the perception of colour. The perception of colour and its transformation depends on whether the light is reflected off the side or the end of the yarn. By bringing do it yourself (DIY) materials into the textile design field, this research questions how biomaterials such as bioplastic can be further developed using textile surface design methods, and how the relationship between texture and colours can be advanced in the design of complex textured surfaces. The method develops a hybrid strategy for designing a new material category combining DIY and digital tools, which offers a more sustainable alternative to conventional textile materials. Moreover, the method proposed builds on two major aspects: explorations of bioplastic materials and their impacts on colour design and selection, and an analysis of changes in the visual perception of coloured surfaces with regard to differences in texture, the positioning of a light source, and angle of viewing. The results are methods of creating complex colour combinations and textural surfaces using near‐adjacent and complementary colours and the intrinsic transparency property of bioplastics.

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