Abstract: A preparation method of a graphene nanoribbon on h-BN, comprising: 1) forming a h-BN groove template with a nano ribbon-shaped groove structure on the h-BN by adopting a metal catalysis etching method; 2) growing a graphene nanoribbon in the h-BN groove template by adopting a chemical vapor deposition method. In the present invention, a CVD method is adopted to directly prepare a morphology controllable graphene nanoribbon on the h-BN, which helps to solve the long-term critical problem that the graphene is difficult to nucleate and grow on an insulating substrate, and to avoid the series of problems introduced by the complicated processes of the transferring of the graphene and the subsequent clipping manufacturing for a nanoribbon and the like.

Abstract: A preparation method of a graphene nanoribbon on h-BN, comprising: 1) forming a h-BN groove template with a nano ribbon-shaped groove structure on the h-BN by adopting a metal catalysis etching method; 2) growing a graphene nanoribbon in the h-BN groove template by adopting a chemical vapor deposition method. In the present invention, a CVD method is adopted to directly prepare a morphology controllable graphene nanoribbon on the h-BN, which helps to solve the long-term critical problem that the graphene is difficult to nucleate and grow on an insulating substrate, and to avoid the series of problems introduced by the complicated processes of the transferring of the graphene and the subsequent clipping manufacturing for a nanoribbon and the like.

Abstract: The invention provides a method for managing data transmission performed in a radio network controller during UE handover procedure. The method is performed in a RNC having a distributed architecture, and comprises the following steps: acquiring a handover request transmitted by UE from a first ATM interface board, by one of the plurality of radio signaling management boards; creating mapping between one of the plurality of data transmission management boards and a second ATM interface board, by the radio signaling management board, said data transmission management board having mapping to the first ATM interface board before handover; and informing UE of performing data transmission between the data transmission management board and the second ATM interface board, by the radio signaling management board.