Sarah Turner - eco-artist and designer through craft-based upcycling

Sarah Turner is an eco-artist and designer who practices craft-based upcycling with waste plastic bottles and cans to create lighting, sculpture and decorative home interior products. Since 1998, her enthusiasm, creativity and good will have allowed her to gain several high-profile client commissions and to win awards from design, innovation and business competitions. The aim of this portrait is to introduce Sarah’s work and shed light on the resources, knowledge and skills involved in her practice and on the barriers to and drivers for her craft-based upcycling. We consider that Sarah’s work could be one of the stepping stones for a shift towards more sustainable craft practice, both in the United Kingdom and beyond. By exploring the right ingredients for craft-based upcycling, barriers liable to be faced and key drivers that stimulate motivation, we hope that this portrait will inspire and attract more designers and makers to embed upcycling in their future practice

An exploratory study on the links between individual upcycling, product attachment and product longevity

Product attachment, the emotional bond experienced with a product, is an emerging concept for sustainable production and consumption. The logic behind it is that when people are attached to any product, they are more likely to handle the product with care and to postpone its replacement or disposal. Some types of product have been studied regarding product attachment in past research but the focus has been on the perspectives of professional designers and manufacturers rather than on consumers’ ‘everyday creativity’ activities such as ‘individual upcycling’. Individual upcycling, creation out of used materials resulting in a higher quality or value product than the compositional elements, is particularly relevant to product attachment. This is because upcycling, as a creative, participatory user activity, may offer the experiences of self-expression, group affiliation, special memories and pleasure, all of which are possible product attachment determinants

Individual upcycling practice: exploring the possible determinants of upcycling based on a literature review

Individual upcycling – the creation or creative modification of any product out of used materials in an attempt to generate a product of higher quality or value than the compositional elements – has recently been advocated by many as a means to reduce waste, yet is still marginal. Considering the implied benefit to sustainable production and consumption, the most relevant question at this point may be how to scale up this marginal practice into mainstream practice to make a bigger impact in society and environment. In order to generate effective scaling-up strategies for change, it is essential to understand the determinants of upcycling (i.e. what drives and facilitates it). This paper reviews relevant contemporary literature and identifies a set of determinants. The synthesized result, despite its partiality, shows possible examples of design and policy implications for scaling-up, and leads to future research suggestions

An exploratory study on the consequences of individual upcycling: is it worth making people feel attached to their upcycled products?

Product attachment, the emotional bond experienced with a product, is an emerging concept for sustainable production and consumption. The logic behind it is that when people are attached to any product, they are more likely to postpone its replacement or disposal. Some types of product have been studied regarding product attachment in past research but the focus has been on manufacturers ’ perspectives rather than on consumers’ ‘everyday creativity’ activities such as ‘individual upcycling’. Individual upcycling, creation or modification out of used materials resulting in a higher quality or value product than the composition al elements, is particularly relevant to product attachment. This is because upcycling, as a creative, engaging user activity, may offer the experiences of self-expression, group affiliation, special memories and pleasure, all of which are possible product attachment determinants. In the meantime, recent evidence suggests that the number of people who upcycle things has increased, possibly as a response to the contemporary ‘Maker Movement’ and aided by physical and digital resources. Despite this growth, individual upcycling has not been investigated extensively, especially its relation to product attachment and product longevity. Acknowledging this, this study investigated the consequences of individual upcycling with respect to product attachment and the product longevity of upcycled products, and compared the results with mass-produced products with the same functions through an exploratory questionnaire with 23 UK-based upcycling practitioners. The results demonstrated that the attachment to upcycled products is positively correlated with irreplaceability, and irreplaceability with product care and expected product longevity. The results also showed that the expected product lifetime years of the upcycled product with attachment are longer than the estimated average product lifetime years of the mass-produced products with the same functions

Type II superconductivity in SrPd2Ge2

Previous investigations have shown that SrPd2Ge2, a compound isostructural with "122" iron pnictides but iron- and pnictogen-free, is a conventional superconductor with a single s-wave energy gap and a strongly three-dimensional electronic structure. In this work we reveal the Abrikosov vortex lattice formed in SrPd2Ge2 when exposed to magnetic field by means of scanning tunneling microscopy and spectroscopy. Moreover, by examining the differential conductance spectra across a vortex and estimating the upper and lower critical magnetic fields by tunneling spectroscopy and local magnetization measurements, we show that SrPd2Ge2 is a strong type II superconductor with \kappa >> sqrt(2). Also, we compare the differential conductance spectra in various magnetic fields to the pair breaking model of Maki - de Gennes for dirty limit type II superconductor in the gapless region. This way we demonstrate that the type II superconductivity is induced by the sample being in the dirty limit, while in the clean limit it would be a type I superconductor with \kappa\ << sqrt(2), in concordance with our previous study (T. Kim et al., Phys. Rev. B 85, (2012)).Comment: 9 pages, 4 figure

Lanczos exact diagonalization study of field-induced phase transition for Ising and Heisenberg antiferromagnets

Using an exact diagonalization treatment of Ising and Heisenberg model Hamiltonians, we study field-induced phase transition for two-dimensional antiferromagnets. For the system of Ising antiferromagnet the predicted field-induced phase transition is of first order, while for the system of Heisenberg antiferromagnet it is the second-order transition. We find from the exact diagonalization calculations that the second-order phase transition (metamagnetism) occurs through a spin-flop process as an intermediate step.Comment: 4 pages, 4 figure

The Effects of d_{x^2-y^2}-d_{xy} Mixing on Vortex Structures and Magnetization

The structure of an isolated single vortex and the vortex lattice, and the magnetization in a $d$-wave superconductor are investigated within a phenomenological Ginzburg-Landau (GL) model including the mixture of the $d_{x^2-y^2}$-wave and $d_{xy}$-wave symmetry. The isolated single vortex structure in a week magnetic field is studied both numerically and asymptotically. Near the upper critical field $H_{c2}$, the vortex lattice structure and the magnetization are calculated analytically.Comment: 14 pages, REVTeX, 2 EPS figures, Journal of Physics: Condensed Matter (in press