Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-08-18
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 figures
Scientific paper
10.1088/0957-4484/19/9/095504
A new transmission-type electron multiplier was fabricated from silicon-on-insulator (SOI) material by integrating an array of one dimensional (1D) silicon nanopillars onto a two dimensional (2D) silicon membrane. Primary electrons are injected into the nanopillar-membrane system from the flat surface of the membrane, while electron emission from the other side is probed by an anode. The secondary electron yield (SEY) from nanopillars is found to be about 1.8 times that of plane silicon membrane. This gain in electron number is slightly enhanced by the electric field applied from the anode. Further optimization of the dimensions of nanopillars and membrane and application of field emission promise an even higher gain for detector applications and allow for probing of electronic/mechanical excitations in nanopillar-membrane system excited by incident particles or radiation.
Blick Robert H.
Kim Hyun-Seok
Qin Hua
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