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Nanowires should be defect-free since they expel defects with strain fields. However, we found new types of defect with zero Burgers vector and no strain field in GaAs nanowires.

Tests of quantum coherence could demonstrate biological systems exploiting quantum phenomena. This paper discusses such tests and how the role the environment must be considered to witness coherence.

This Physics Day was essentially a workshop concerned with experimental electron microscopy and theoretical modelling of ‘Extreme Nanowires,’ the smallest nanowires that can be formed down to a single atom width, and also discrete molecules formed on a similar scale. The Physics Day included contributions from four Warwick speakers, including two PhD students, UK speakers Prof. Andrei Khlobystov, Dr. Thomas Chamberlain and Dr. Andrew Morris from the Universities of Nottingham, Leeds and Birmingham respectively, and also the distinguished International Speaker Prof. Kazu Suenaga from the AIST in Tsukuba, Japan. This event was also used as a preamble for the EMAG (Electron Microanalysis and Analysis Group) meeting which was taking place in Warwick during the same week (i.e. 6^th-8^th July).

Tim Gershon and Anton Poluektov have proposed a new method that may make it possible to observe a long-sought after type of particle called double beauty hadrons.