A novel pixel sensor structure formed on a substrate of a first conductivity type includes a photosensitive device of a second conductivity type and a surface pinning layer of the first conductivity type. An embodiment includes depressions on the outer circumferential surface andor the inner circumferential surface of the expandable layer. The pushing component is movably secured to the housing for pushing an object. The communication apparatus also includes a transmitter unit to transmit the adjusted consecutive frames.