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Literary linguistics: Open Access research in English language

Strathprints makes available Open Access scholarly outputs by English Studies at Strathclyde. Particular research specialisms include literary linguistics, the study of literary texts using techniques drawn from linguistics and cognitive science.

The team also demonstrates research expertise in Renaissance studies, researching Renaissance literature, the history of ideas and language and cultural history. English hosts the Centre for Literature, Culture & Place which explores literature and its relationships with geography, space, landscape, travel, architecture, and the environment.

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Highly-photostable and mechanically flexible all-organic semiconductor lasers

Foucher, C. and Guilhabert, B. and Kanibolotsky, A. L. and Skabara, P. J. and Laurand, N. and Dawson, M. D. (2013) Highly-photostable and mechanically flexible all-organic semiconductor lasers. Optical Materials Express, 3 (5). pp. 584-597. ISSN 2159-3930

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Abstract

Two formats of all-organic distributed-feedback lasers with improved photostability, respectively called nanocomposite and encapsulated lasers, are reported. These lasers are compatible with mechanically-flexible platforms and were entirely fabricated using soft-lithography and spin-coating techniques. The gain elements in both types of lasers were monodisperse pi-conjugated star-shaped macromolecules (oligofluorene truxene, T3). In the nanocomposites lasers, these elements were incorporated into a transparent polyimide matrix, while in the encapsulated devices a neat layer of T3 was overcoated with Poly(vinyl alcohol) (PVA). The T3-nanocomposite devices demonstrated a 1/e degradation energy dosage up to similar to 27.0 +/- 6.5 J/cm(2) with a threshold fluence of 115 +/- 10 mu J/cm(2). This represents a 3-fold improvement in operation lifetime under ambient conditions compared to the equivalent laser made with neat organic films, albeit with a 1.6-time increase in threshold. The PVA-encapsulated lasers showed the best overall performance: a 40-time improvement in the operation lifetime and crucially no-trade-off on the threshold, with respectively a degradation energy dosage of similar to 280 +/- 20 J/cm(2) and a threshold fluence of 36 +/- 8 mu J/cm(2).