让电子搭便车：纳米机械电子穿梭机
Giving electrons a ride: nanomechanical electron shuttles
摘要：
纳米机械穿梭机将小电子群甚至单个电子从一个电极转移到另一个电极，为受控电荷传输问题提供了一种新方法。在这里，我们报告的穿梭结的制造由一个20纳米直径的金纳米粒子嵌入两个金电极之间的间隙。纳米颗粒通过单层柔性有机分子附着到电极上，所述柔性有机分子起到弹簧的作用，使得当施加足够的偏压时，纳米颗粒开始振荡，将电子从一个电极转移到另一个电极。电流-电压特性的制造设备已被测量，并与我们的计算机模拟的结果进行比较。
英文摘要：
Nanomechanical shuttles transferring small groups of electrons or even individual electrons from one electrode to another offer a novel approach to the problem of controlled charge transport. Here, we report the fabrication of shuttle-junctions consisting of a 20 nm diameter gold nanoparticle embedded within the gap between two gold electrodes. The nanoparticle is attached to the electrodes through a monolayer of flexible organic molecules which play the role of springs so that when a sufficient voltage bias is applied, then nanoparticle starts to oscillate transferring electrons from one electrode to the other. Current-voltage characteristics for the fabricated devices have been measured and compared with the results of our computer simulations.
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