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Article
Publication date: 5 January 2023

Jundong He and Xinguang Lv

The purpose of this study is to modify the FDM 3D printer to print with polystyrene (PS) microspheres as the printing material, thus enabling bottom-up structural color printing…

Abstract

Purpose

The purpose of this study is to modify the FDM 3D printer to print with polystyrene (PS) microspheres as the printing material, thus enabling bottom-up structural color printing and evaluating structural color printing.

Design/methodology/approach

This study chose a range of different heated bed temperatures to determine a suitable temperature for accelerating the self-assembly of photonic crystals and printing structural colors on various substrates. In addition, this study enhanced the structural color by doping PS microspheres with different contents of Acid Black 210 dye and evaluated the color-enhanced structural color by eye and spectrophotometer under different light sources.

Findings

The results show that the modified 3D printer can be used for structural color printing, and 50°C is determined as the heated bed temperature. There are significant differences in structural colors when printing under different color backgrounds and material substrates, and corresponding suitable substrates should be selected according to the application. The doping of PS microspheres with varying contents of dye results in different color levels of structural color. As with pigment colors, the visual perception of structural color varies when viewed under different light sources.

Originality/value

This paper proposes to print structural colors low-costly, analyze structural colors under substrate and light source conditions, and expand the structural color gamut by enhancing structural colors, which has positive implications for further research on structural colors as printing colors.

Details

Pigment & Resin Technology, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 5 June 2017

Xiaohong Yuan, Wenzheng Xu, Fenglin Huang, Qingqing Wang, Qufu Wei and Dongsheng Chen

Structural color is more brilliant in color, more resistant to sunshine and will not fade away with time, and more environmental friendly than traditional dyes and pigments. The…

Abstract

Purpose

Structural color is more brilliant in color, more resistant to sunshine and will not fade away with time, and more environmental friendly than traditional dyes and pigments. The purpose of this paper is to prepare structural colors of fabrics coated with Ag/TiO2 composite films by magnetron sputtering, and analyze the relationship between the colors and the thicknesses of TiO2 films in Ag/TiO2 composite films.

Design/methodology/approach

Preparation of Ag/TiO2 composite films by magnetron sputtering and their deposition on textiles were investigated. The chemical compositions and surface morphology of Ag/TiO2 composite films were examined by X-ray photoelectron spectroscopy and scanning electron microscopy, and the structural color of fabric coated with Ag/TiO2 composite film was also analyzed.

Findings

Ag/TiO2 composite films deposited on textile substrate exhibited structural colors, and the bright colors could be adjusted and controlled by the thickness of TiO2 thin films in Ag/TiO2 composite films without any dyes or pigments. By comparing the results of theoretical calculation and experimental results, it was found that the creation of structural colors by the experiment was coincident to the colors by theoretical calculation according to the film interference principle. There was a linear relationship between the thickness of TiO2 film and the wavelength of the structural color.

Originality/value

Compared to traditional coloration by dyes or pigments, the coloration of textile by structural color from Ag/TiO2 composite films prepared by magnetron sputtering was very environmental friendly and simple without water consuming, time consuming and tedious work. Structural colors have great potential applications in textiles in place of traditional dyes and pigments. Furthermore, the textiles coated with Ag/TiO2 composite films have good electrical, optical and magnetic properties, and can be used in apparel, home furnishings and industrial fabrics.

Details

International Journal of Clothing Science and Technology, vol. 29 no. 3
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 2 April 2019

Xiaohong Yuan, Qufu Wei, Huizhen Ke, Zujian Huang and Dongsheng Chen

The purpose of this paper is to prepare structural colors of fabrics coated with Silver/Zinc Oxide (Ag/ZnO) composite films by magnetron sputtering and analyze the relationship…

Abstract

Purpose

The purpose of this paper is to prepare structural colors of fabrics coated with Silver/Zinc Oxide (Ag/ZnO) composite films by magnetron sputtering and analyze the relationship between the colors and the thickness of Zinc Oxide (ZnO) film in Ag/ZnO composite film and the photocatalytic property of the fabrics coated with Ag/ZnO composite film.

Design/methodology/approach

Ag/ZnO composite films deposited on polyester fabrics were prepared by magnetron sputtering technology. The structural colors of textiles coated with Ag/ZnO composite films and the relationship between the colors and Ag/ZnO composite films were analyzed, and the photocatalytic property of Ag/ZnO composite films was also discussed.

Findings

The results indicated that the colors varied with the thicknesses of the ZnO film in Ag/ZnO composite films. The reactive sputtering time of ZnO film was 5, 8, 10 and 14 min, respectively, and the colors of the corresponding fabrics were purple, blue, blue-green and yellow. Meanwhile, the polyester fabrics coated with Ag/ZnO composite films showed the excellent photocatalytic properties, and silver (Ag) films deposited under the ZnO films in Ag/ZnO composite films could also improve the photocatalytic activities of ZnO films, and the formaldehyde degradation rates was 77.5%, which was higher than the 69.9% for the fabrics coated only with the ZnO film.

Originality/value

The polyester fabrics coated with Ag/ZnO composite films not only created various structural colors using change the thicknesses of the ZnO film, but also achieved the multifuctionality, which will have a broad application prospect in textile fields.

Details

International Journal of Clothing Science and Technology, vol. 31 no. 4
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 25 February 2019

Klaus-Peter Wiedmann, Janina Haase, Jannick Bettels and Christian Reuschenbach

Industrial markets are generally associated with objective decision-making in which rational and functional product benefits are central. Recently, however, subjective aspects of…

1201

Abstract

Purpose

Industrial markets are generally associated with objective decision-making in which rational and functional product benefits are central. Recently, however, subjective aspects of decision-making, such as visual appeal, are attracting research attention. The purpose of this paper is to examine, first, the effect of product color as a non-functional design element on attitude toward the product and, second, the underlying causal relationships of this effect in the context of industrial products.

Design/methodology/approach

The authors conducted an online quasi-experiment in the dental market with a sample of 300 dentists. The product stimulus was a picture of a treatment chair that varied in color. An analysis of variance tested the effect of product color on attitude. Structural equation modeling investigated the underlying effects of product evaluation.

Findings

The results indicate that product color affects attitude toward the product. Further, the authors find an insightful causal chain of direct and indirect effects on attitude. The most effective path runs via visual appeal and aesthetics, while haptics and functionality are of minor importance.

Originality/value

This paper is one of the first to provide empirical evidence for the effect of non-functional design elements such as product color on the evaluation of an industrial product. The results provide valuable insights into the effects on attitude in this context and stress the great importance of visual appeal and aesthetics in the product evaluation process.

Details

Journal of Product & Brand Management, vol. 28 no. 1
Type: Research Article
ISSN: 1061-0421

Keywords

Article
Publication date: 6 September 2023

Hafsat T. Rumah, Mansur B. Ibrahim and Sani M. Gumel

The purpose of this research is to identify and investigate some natural dyes with halochromic properties for potential use as food spoilage indicators to reduce waste and curve…

Abstract

Purpose

The purpose of this research is to identify and investigate some natural dyes with halochromic properties for potential use as food spoilage indicators to reduce waste and curve the negative effects of food borne diseases.

Design/methodology/approach

Exactly 10 potential dye-yielding plants were selected based on their colour (mostly purple, red, maroon and pink). Solvent extraction was used to extract the dyes and pH differential method was used to determine the concentrations of anthocyanin in the extracted dyes. Different concentrations of hydrochloric acid and sodium hydroxide (0.1 M, 1 M and 2 M) in drops and in excess as acidic and basic solution, respectively, were used to test the halochromicity of the extracted dyes. Methyl red (a synthetic dye) was used as a reference standard/control. The pH of the dyes was recorded before and after addition of both NaOH and HCl solutions.

Findings

Five out of the 10 dyes extracted (labelled as dye A–E for Ti plant (green Cordyline fruticosa), coleus (Coleus blumei), paper flower (Bougainvillea glabra), painted nettle (Palisandra coleus) and purple heart (Setcresea purpurea), respectively, were found to be halochromic (even at low doses) by changing its colour when exposed to both acidic and basic solutions. While other dyes labelled F–J for red acalypha (Acalypha wilkesiana), golden shower (Cassia fistula), golden dew drop (Duranta repens), wild sage (Lantana camara var Aculeata) and pink oleander (Apocynaceae Nerium oleander), respectively, were either completely insensitive to the solutions in drops, slightly sensitive at high doses or the colour change is insignificant. Although some dyes were found to be more sensitive than others but in most cases, the colour changes in halochromic dyes were more stable in acidic conditions than in basic making it more sensitive to the basic than the acidic solution with the exception of dye A and E (to some extent) which was sensitive to both acidic and basic solution. The anthocyanin contents of dye A–J were found to be between the range of 2.28–10.35 mg/l with dye E having the lowest and dye J with the highest anthocyanin concentration, respectively. The initial pH of all the dyes falls within the range of 4.8–7.3 with most found within the acidic range.

Originality/value

Halochromic dye research studies are still at the infancy stage in developing world despite the vast available and abundant potential natural halochromic dye-yielding plants. The study explored this area of research and gives an opportunity for the development of smart packaging for pH-sensitive foods using natural dyes as an alternative to conventional synthetic dyes to reduce cost and also curve the negative effect of synthetic dyes as well as food borne diseases.

Details

Pigment & Resin Technology, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 1 April 1991

David M. Howell

Outlines the history of pre‐coated metal cladding, its use and thecauses of failure. Discusses the process of manufacturing and the typesof coating available. Examines the causes…

Abstract

Outlines the history of pre‐coated metal cladding, its use and the causes of failure. Discusses the process of manufacturing and the types of coating available. Examines the causes of failure, looking at loading requirements, span requirements, substrate type, profile, fixing requirements, pitch, coating type (external and internal faces), design life, site environmental conditions, insulation standards, packaging, handling and storage conditions and evidence of suitability. Suggests that there remains a need for improved national and international standards, the existence of which would help to ensure that products are properly selected for the intended building use, resulting in fewer cladding failures and a simpler method of allocating responsibility in the event of disputes.

Details

Structural Survey, vol. 9 no. 4
Type: Research Article
ISSN: 0263-080X

Keywords

Article
Publication date: 31 October 2023

M. Candace Christensen, María Verónica Elías, Érica Alcocer and Shannyn Vicente

This study aims to illustrate how white supremacy culture can be produced within nonprofit organizations with a mandate to serve marginalized communities and provide practical…

Abstract

Purpose

This study aims to illustrate how white supremacy culture can be produced within nonprofit organizations with a mandate to serve marginalized communities and provide practical suggestions for preventing oppression.

Design/methodology/approach

The site of inquiry was a nonprofit organization in south central Texas that provides social support to queer and trans youth. Through critical ethnography, the researchers evaluated the organization's processes and structure (including hierarchy, decision-making, fundraising and interactions between leaders, partners and affected groups) to explore how the organization perpetuated attributes of white supremacy culture.

Findings

Data reveal that the organization alienates the youth, volunteers and employees through defensiveness, fear of open conflict, paternalism, perfectionism and power-hoarding.

Originality/value

A dearth of research focuses on how white supremacy culture manifests in organizations serving marginalized communities. This paper addresses this gap by focusing on a nonprofit organization in central Texas that supports queer and trans youth. The authors offer recommendations for addressing white supremacy culture in organizations and suggest future research opportunities.

Details

Qualitative Research in Organizations and Management: An International Journal, vol. 18 no. 4
Type: Research Article
ISSN: 1746-5648

Keywords

Book part
Publication date: 7 September 2011

Natasha A. Mitchell and Jaronda J. Miller

The role gender plays in academia has provided unique experiences and challenges for women (Hill, Leinbaugh, Bradley, & Hazler, 2005). Inequalities in salary, as well as promotion…

Abstract

The role gender plays in academia has provided unique experiences and challenges for women (Hill, Leinbaugh, Bradley, & Hazler, 2005). Inequalities in salary, as well as promotion and tenure, are issues women in higher education have had to endure since their entrance into the academy. For women of color there is an additional layer to their struggles that is predicated on the impact of race and ethnicity, all synergistically affecting how women of color enter, negotiate, and are retained within academia. This chapter explores themes around the issues that require women of color to subjugate the self to succeed and find acceptance in academia. This chapter illuminates the unwritten rules that often decide the fate of women faculty of color; as well as how women of color are navigating the intersection of race and gender in academia. Feminist theoretical approaches and narrative inquiry have been employed to draw out themes from the stories of eleven women of color who currently or previously held academic positions.

Details

Women of Color in Higher Education: Changing Directions and New Perspectives
Type: Book
ISBN: 978-1-78052-182-4

Article
Publication date: 15 February 2021

Amruta Joglekar-Athavale and Ganapti S. Shankarling

The review glances upon the colorants used for printing on ceramic substrates by ink jet technology and techniques, chemistry involved during the selection of the colorants.

Abstract

Purpose

The review glances upon the colorants used for printing on ceramic substrates by ink jet technology and techniques, chemistry involved during the selection of the colorants.

Design/methodology/approach

The ink jet technology is an easy and a convenient technique, specially designed colorants are used for such applications with tailor made properties and features.

Findings

New developments in technology and chemistry of colorants to achieve successes in application studies of ceramic substrates.

Research limitations/implications

N/A.

Practical implications

This review glances upon the history, development and practical approach of the current techniques with available dyes and pigments and the techniques involved during the synthesis and application.

Originality/value

The review paper provides information about the development of the inkjet technique on ceramics and available colorants with methods.

Details

Pigment & Resin Technology, vol. 51 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

Book part
Publication date: 1 August 2023

R. Lennon Audrain and Carole G. Basile

For many years, public education has been concerned about the number of teachers of color in public schools, the experiences of teachers of color, and the ability of teachers to…

Abstract

For many years, public education has been concerned about the number of teachers of color in public schools, the experiences of teachers of color, and the ability of teachers to understand how to be culturally competent. These concerns have been addressed by programs and projects that focus on recruiting more teachers of color, providing more coaching and mentoring, and/or professional learning. So far, none of these have made a significant difference in addressing any of these challenges. It is time to move from projects and programs and examine the fundamental structures and systems of classrooms that limit, obstruct, and hinder the ability to create workplaces that are equitable and conducive to real inclusivity. In this chapter, we narrate how the Next Education Workforce (NEW) initiative at Arizona State University is cultivating diversity and inclusion in the education workplace by rethinking and redesigning the workplace for educators, especially those from marginalized groups. In partnership with multiple districts across Arizona, NEW is rethinking educator roles and responsibilities in the workplace and their accompanying entry, induction, specialization, and advancement practices and pathways. To mitigate these challenges of the current workplace – where a single educator is responsible for an entire classroom of students – and to work toward a more equitable one, the future workplace must be redesigned so educators operate in teams. By creating teams of educators who work in real time, recognizing educators' unique expertise, and focusing on deepening and personalizing learning – whether content, pedagogical, or lived experiences – we can redesign the workplace, learning environments, and the teaching profession.

1 – 10 of over 15000