A composition capable of forming a micelle in body fluids or in an aqueous medium and that can be injected into the body undiluted or as a diluted solution in an aqueous medium and method of preparation are disclosed. The display device may include a touch substrate overlapping the display element and may overlap an external object when the external object provides a touch to the display device. A first stop extends from the transmission housing for limiting the rotation of the pick mechanism about the drive shaft. The fourth mounting electrode defining a monitoring port is disposed on a side different from a side on which each of the first mounting electrode defining a transmission port, the second mounting electrode defining a reception port, and the third mounting electrode defining an antenna port is disposed.