InGaAs/InP double heterostructures on InP/Si templates fabricated by wafer bonding and hydrogen-induced exfoliation

Hydrogen-induced exfoliation combined with wafer bonding has been used to transfer ~600-nm-thick films of (100) InP to Si substrates. Cross-section transmission electron microscopy (TEM) shows a transferred crystalline InP layer with no observable defects in the region near the bonded interface and an intimately bonded interface. InP and Si are covalently bonded as inferred by the fact that InP/Si pairs survived both TEM preparation and thermal cycles up to 620 °C necessary for metalorganic chemical vapor deposition growth. The InP transferred layers were used as epitaxial templates for the growth of InP/In0.53Ga0.47As/InP double heterostructures. Photoluminescence measurements of the In0.53Ga0.47As layer show that it is optically active and under tensile strain, due to differences in the thermal expansion between InP and Si. These are promising results in terms of a future integration of Si electronics with optical devices based on InP-lattice-matched materials

‘I'm rewriting the law’:When children bring literacy into nursery school

Based on an analysis of three literacy events in nursery schools, this article focuses on how literacy forms part of children's social practices and co-creates the language environment in the nursery and how place, affect and materiality play a key role in children's multimodal and embodied meaning-making around literacy. The analysis is based on ethnographic fieldwork in two nursery schools, in which we followed different children through their days in order to explore how they used language in different contexts, what characterised their language practices and what appeared to encourage and constrain their desire to express themselves. It shows how the written word means much more to children than knowledge about the structure of books and identification of letters and how children draw on their own experience and include the place and the available materials in their joint meaning-making processes. Against this background, we argue for the need for a reconceptualisation of what literacy is and can be in a nursery school context and for a discussion of the implications of this for teaching literacy.Based on an analysis of three literacy events in nursery schools, this article focuses on how literacy forms part of children's social practices and co-creates the language environment in the nursery and how place, affect and materiality play a key role in children's multimodal and embodied meaning-making around literacy. The analysis is based on ethnographic fieldwork in two nursery schools, in which we followed different children through their days in order to explore how they used language in different contexts, what characterised their language practices and what appeared to encourage and constrain their desire to express themselves. It shows how the written word means much more to children than knowledge about the structure of books and identification of letters and how children draw on their own experience and include the place and the available materials in their joint meaning-making processes. Against this background, we argue for the need for a reconceptualisation of what literacy is and can be in a nursery school context and for a discussion of the implications of this for teaching literac

Therapy-based exercise from the perspective of adult patients: a qualitative systematic review conducted using an ethnographic approach

© The Author(s) 2019.Objectives: Many patients do not meet recommended levels of therapy-based exercise. This review aims to explore how adult patients view being prescribed therapy-based exercise, the information/education they are given and receive and if/how they independently practise and adhere. Design: A qualitative systematic review conducted using an ethnographic approach and in accordance with the PRISMA statement. Sources: PubMed, CINAHL, SCOPUS and EMBASE databases (01 January 2000–31 December 2018). Methods: Qualitative studies with a focus on engagement/adherence with therapy-based exercise were included. Data extraction and quality appraisal were undertaken by two reviewers. Results were discussed and data synthesized. Results: A total of 20,294 titles were screened, with data extracted from 39 full texts and data from 18 papers used to construct three themes. ‘The Guidance received’ suggests that the type of delivery desired to support and sustain engagement was context-dependent and individually situated. ‘The Therapist as teacher’ advocates that patients see independent therapy-based exercise as a shared activity and value caring, kind and professional qualities in their therapist. ‘The Person as learner’ proposes that when having to engage with and practise therapy-based exercise because of ill-health, patients often see themselves as new learners who experience fear and uncertainty about what to do. Patients may have unacknowledged ambivalences about learning that impact on engagement and persistence. Conclusion: The quality of the interaction between therapists and patients appears integral to patients engaging with, and sustaining practice of, rehabilitation programmes. Programmes need to be individualized, and health care professionals need to take patients’ previous experiences and ambivalences in motivation and empowerment into account.Peer reviewe