Absorption Enhancement in Organic-Inorganic Halide Perovskite Films with Embedded Plasmonic Gold Nanoparticles

We report on the numerical analysis of solar absorption enhancement in organic-inorganic halide perovskite films embedding plasmonic gold nanoparticles. The effect of particle size and concentration is analyzed in realistic systems in which random particle location within the perovskite film and the eventual formation of dimers are also taken into account. We find a maximum integrated solar absorption enhancement of ∼10% in perovskite films of 200 nm thickness and ∼6% in 300 nm films, with spheres of radii 60 and 90 nm, respectively, in volume concentrations of around 10% in both cases. We show that the presence of dimers boosts the absorption enhancement up to ∼12% in the thinnest films considered. Absorption reinforcement arises from a double contribution of plasmonic near-field and scattering effects, whose respective weight can be discriminated and evaluated from the simulations.Peer Reviewe

Meaningful informed consent with young children: looking forward through an interactive narrative approach

Ideas about ethical research with young children are evolving at a rapid rate. Not only can young children participate in the informed consent process, but researchers now also recognize that the process must be meaningful for them. As part of a larger study, this article reviews children's rights and informed consent literature as the foundation for the development of a new conceptual model of meaningful early childhood informed consent. Based on this model, an ‘interactive narrative’ approach is presented as a means to inform three- to eight-year-old children about what their participation might involve and to assist them to understand and respond as research participants. For use with small groups, this approach revolves around a storybook based on research-related factual images delivered via interactive (re)telling. This narrative approach to informed consent is unique in its holistic design which seeks to address the specific needs of young children in research

Positioning the technologies curriculum: a snapshot of Australian initial teacher education programs

Globally, technology is now a vital element of the school curriculum. Technology has changed the way children learn, and when teachers integrate technology into pedagogical practices, resources, and assessment it expands the way teachers teach. This paper explores how initial teacher education (ITE) programs across Australia position the Technologies Curriculum. It uses data provided at a symposium of teacher educators who deliver ITE in the use of technologies. The paper maps data from 32 universities, including primary, secondary, undergraduate and postgraduate programs. It also investigates the naming conventions of courses in these programs and exemplifies the student experience by providing three vignettes from three programs in three different states. The findings suggest that Technologies education in Australia is offered in many ways to pre-service teachers, thus the landscape of this teaching area is diverse. This paper contributes to the field in being the first research to explore how Australian universities teach Technologies within their ITE programs. It offers a snapshot of how technologies are positioned in Australian ITE programs

Factors affecting the use and outcomes of interactive science exhibits in community settings

This article reports an investigation into the use of 12 Do-It-Yourself (DIY) Interactive Science Exhibits, borrowed by two community venues—a regional Hall of Fame and a metropolitan Library—as part of a science center's outreach program. Data were generated through interviews with venue staff, interviews with adults and surveys of children who visited the exhibits, and observations of visitor behavior around the exhibits. All children and most adults enjoyed using the exhibits, and adults thought the exhibits would raise people's (particularly children's) awareness of science and teach scientific ideas. Venue staff were pleased with the outcomes of the exhibit loan; however, the potential educational effectiveness of the exhibits was limited by issues relating to location and the visitors’ agendas. There were problems in attracting people to the exhibits and encouraging visitors, particularly adults, to engage with them. Suggestions are made to increase the effectiveness of using interactive exhibits in community settings

Do-It-Yourself Astronomy: Getting the best out of a science kit

This paper reports an investigation of how four teachers in four different schools used an Astronomy Science Kit. Their varied experiences, along with their varied levels of knowledge and experience in teaching science, considered in the context of other research about science kits, are used to draw conclusions about how best such Do-It-Yourself Science Kits might be prepared and used by teachers in their classrooms

A hierarchical model of children’s research participation rights based on information, understanding, voice, and influence

© 2018, © 2018 EECERA. This paper introduces a hierarchical model of children’s (3- to 8-year olds) research participation rights that builds on work by Roger Hart and integrates key participation rights drawn from UNCRC Article 12: information, understanding, voice, and influence. It provides insight into the various levels of information that can be provided to children, the understanding that results, the scope given to them to express their views, and the degree to which their voices ultimately exert influence in research contexts. Each of these four elements plays a unique role in upholding and enhancing children’s rights in research and emphasises the need for rights to be woven into the fabric of a research project from its conception. Considering children’s rights of research participation in a more integrated manner, as suggested by the hierarchy, has the potential to improve participation experiences for children and to value them as citizens with meaningful rights