A surgical procedure is carried out on any suitable hollow organ, such as a gall bladder located beneath an abdominal wall. Etched features, such as truncated pyramids, may be formed on the emitting surface, prior to the RIE process, by cutting into the surface using a saw blade or a masked etching technique. The device may also include first thermal vias extending from the mounting area to at least an interior of the substrate. When the mobile terminal accesses the multimedia data providing device and requests the multimedia data, the package data including the multimedia data is transmitted to the mobile terminal through communication network.