A computer receives a request for authentication from a client. In various embodiments, a potential barrier arrangement is configured to block the flow of charge carriers generated outside a photosensitive region. From the program guide data, a user selects a task. Therefore, high precision laser processing is possible for materials with low transmission for light and low mechanical stability like flexible thin film solar cells. A core-first synthesized nanoparticle, along with a rubber composition and tire product are also provided.