Field Emission from an Array of Free—standing Metallic Nanowires |
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作者姓名: | 张耿民 EmmanuelROY 等 |
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作者单位: | [1]DepartmentofElectronics,PekingUniversity,Beijing100871 [2]DynamiquedesTransfertsauxInterfaces(DTI-CNRS),FacultedesSciences,Universitedereims,51687ReimsCedex02,France |
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摘 要: | Arrays of single crystalline gold nanowires were synthesized electrochemically in porous polycarbonate membranes.The polycarbonate membrane was then removed to obtain free-standing nanowires for field emission measurements.The turn-on electric field strength for field emission is found to be lower than 2V/μm.The actual electric field that extracted electrons out of the gold nanowires is estimated to be about 10^3 times higher than the field directly expected in the model of a parallel plate condenser.The availability of the field emission is therefore attributed to the strong electric field at the tips resulting from small curvature radius of the gold nanowires.
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关 键 词: | 场效应器件 金属Nano导线阵列 场发射 |
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