Instituto de Microelectrónica de Madrid-CNM (CSIC), Isaac Newton 8 (PTM), Tres Cantos, 28760 Madrid.
Nano Lett. 2009 Dec;9(12):4122-7. doi: 10.1021/nl902350b.
Coupled nanomechanical systems and their entangled eigenstates offer unique opportunities for the detection of ultrasmall masses. In this paper we show theoretically and experimentally that the stochastic and deterministic responses of a pair of coupled nanocantilevers provide different and complementary information about the added mass of an analyte and its location. This method allows the sensitive detection of minute quantities of mass even in the presence of large initial differences in the active masses of the two cantilevers. Finally, we show the fundamental limits in mass detection of this sensing paradigm.
耦合纳米机械系统及其纠缠本征态为检测超微质量提供了独特的机会。本文从理论和实验上证明了一对耦合纳米梁的随机和确定性响应为附加质量及其位置提供了不同且互补的信息。即使在两个梁的主动质量存在较大初始差异的情况下，该方法也能实现对微小质量的灵敏检测。最后，我们展示了该传感模式在质量检测方面的基本极限。
