THE ACOUSTICS 2012 HONG KONG conference and exhibition consists a joint meeting of the 163rd meeting of the Acoustical Society of America (ASA), the 8th meeting of the Acoustical Society of China (ASC), the 11th Western Pacific Acoustics Conference (WESPAC) and the Hong Kong Institute of Acoustics (HKIOA) organized by the Hong Kong Institute of Acoustics. It will take place at the Hong Kong Convention and Exhibition Centre from 13 May to 18 May, 2012 (Sunday to Friday). THE ACOUSTICS 2012 HONG KONG meeting will provide the best opportunity for engineers and scientists in all fields of acoustics to learn about and share their work with colleagues from around the world. More than 10 parallel technical sessions would be arranged for exchange of views and sharing of experience. Please mark the event down in your diary and watch out for more details which would be available soon.
Title: "Metamaterials for Transformation Acoustics Applications"
Abstract: Transformation acoustics is a paradigm for the creation of sound-manipulating materials and devices that are either difficult or impossible to derive through other theoretical approaches. It is based on the idea of a coordinate transformation of an arbitrary initial sound field. If the device you imagine can be defined in terms of a coordinate transformation, by squeezing, stretching, or displacing the sound field in a finite region, then transformation acoustics provides the mathematics for deriving the properties of a material in that same finite region that will have exactly the same effect on the sound field as the coordinate transformation. Transformation acoustics theory has lead to interest in designing acoustic composites, also known as metamaterials, that can to achieve the large range of material parameters needed for transformation acoustics designs. This presentation will describe recent efforts to design and fabricate composite materials with the acoustic properties needed to realize transformation acoustics devices, and also demonstrate their performance in experimental measurements.