时间： 2013年7月3日 上午10:30

地点：四川大学物理馆一楼会议厅103室

报告题目：Negative thermal expansion and other anomalous physical properties of framework materials

报告人：Prof. Martin Dove

Queen Mary University of London, UK

报告摘要 

The idea of negative thermal expansion – where materials shrink on heating – burst onto the scene in the late 1990's. It appears that many of these materials have an atomic structure that can be described as a network of corner-sharing structural polyhedra, and it is this property that gives the clue to understanding negative thermal expansion. More recently there has been the prospect that these materials show another anomalous property, namely pressure-induced softening, whereby the material becomes softer under compression. We report recent work on both zeolites and Zn(CN)2 mostly using simulation but also reporting some recent experiments.

报告人简介：

Prof. Martin Dove did both his undergraduate and graduate studies in the Department of Physics at the University of Birmingham, the latter in the Crystal Physics group working on phase transitions in molecular crystals. He did post-doctoral work in the Department of Physics in Edinburgh, and in Theoretical Chemistry in Cambridge, before being appointed as a lecturer within the Mineral Physics group in the Department of Earth Sciences, University of Cambridge. He was subsequently promoted to Reader and then Professor. He developed parallel programmes of work involving computer simulations and neutron scattering studies of materials. For a while he led a large programme of work in the area of informatics applied to materials modelling. 

Two years ago he moved to Queen Mary University of London to create and lead the Centre for Condensed Matter and Materials Physics, and has subsequently also created a cross-campus Institute for Materials Research of which he is also the director. He is also a deputy director of the cross-London Thomas Young Centre for Materials Modelling. He is very pleased to have one excellent PhD student working with him who did her masters degree in Physics at Sichuan University, and will be joined by another Sichuan graduate after the summer.

Today Martin will talk about one of his current interests, namely the anomalous properties of network crystal structures.

                                           四川大学物理科学与技术学院

                                                         2013-06-30