Abstract
기계적 자유도(mechanical degrees of freedom)를 가지는 free-standing 박막의 전계 방출 특성을 연구하였다. Free-standing 박막에서의 전계 방출 효과를 보다 정확히 해석하기 위하여 기계적 자유도(mechanical degrees of freedom)를 고려한 Fowler-Nordheim 전계 방출 식을 유도하였다. 새롭게 유도된 Fowler-Nordheim 식은 실험값과 매우 잘 일치한다. 이러한 free-standing 박막에서의 전계 방출 효과를 이용하여 이온화된 생체 분자의 충돌로 인해 발생된 free-standing 박막의 고주파 기계적 진동을 탐지함으로써 단백질 질량 분석기의 디텍터로 활용될 수 있음을 보였다. We describe modified Fowler-Nordheim (FN) field emission equation for the free-standing nanomembrane cathode, which has mechanical degrees of freedom. The derived FN equation agrees well with the experimental data. The free-standing nanomambrane cathode demonstrates its unique ability to detect large biomolecure ions.
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