▎ 摘　　要

NOVELTY - The electronic device has a gate electrode (20) which is associated with the graphene element (14). The source and drain electrodes (16,18) are electrically connected with the graphene elements. The source and drain electrodes are angled to the gate electrodes such that the graphene element is addressed individually by appropriate selection of one of the gate electrodes and one of the pairs of source and drain electrodes. The graphene elements are mounted on silicon oxide layer (12). The graphene elements serve as transistor or sensor. USE - Graphene based electronic device such as biosensor used in biomedical, medical diagnosis, health care applications. Can also be used in spintronics applications, DNA sensing applications, computer memory and bio-molecule based electronic applications. ADVANTAGE - Unique and individual addressing of graphene elements can be permitted without requiring the provision of separate electrodes for the graphene elements so that the device can be fabricated conveniently. The measurement of the resistance or conductivity of the graphene elements can be performed quickly and easily. Commercially viable electronic device with label-free nature can be achieved. The noise in electronic device can be reduced while improving the sensitivity of the electronic device. The device is convenient to use. The electronic device can be effectively used in the applications in which a high throughput of data is required. The productivity of the electronic device can be enhanced. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the electronic device. Silicon oxide layer (12) Graphene element (14) Source electrode (16) Drain electrode (18) Gate electrode (20)