论文标题
周期性空间扰动对石墨烯平台附近量子点的排放率的影响
The effect of periodic spatial perturbations on the emission rates of quantum dots near graphene platforms
论文作者
论文摘要
在导电表面附近的荧光（FL）淬灭，尤其是在2-D石墨烯层附近已成为重要的生化感测工具。淬灭归因于发色团和有损导体之间的快速非辐射能传递。当发色团与谐振器耦合时，还观察到发射率的提高。在这里，我们结合了两种效果，以控制发色团的发射寿命。在我们的情况下，谐振器是由石墨烯表面导向下方的氧化物底物中的一系列纳米孔定义的。我们证明，相对于激发激光的极化，样品旋转了样品，因此发射速率的变化超过50％。对排放寿命的这种控制可用于控制两个发色团之间的共振能量转移（RET）。
Quenching of fluorescence (FL) at the vicinity of conductive surfaces, and in particular, near a 2-D graphene layer has become an important biochemical sensing tool. The quenching is attributed to fast non-radiative energy transfer between a chromophore and the lossy conductor. Increased emission rate is also observed when the chromophore is coupled to a resonator. Here we combine the two effects in order to control the emission lifetime of the chromophore. In our case, the resonator was defined by an array of nano-holes in the oxide substrate underneath a graphene surface guide. We demonstrated an emission rate change by more than 50% as the sample was azimuthally rotated with respect to the polarization of the excitation laser. Such control over the emission life-time could be used to control resonance energy transfer (RET) between two chromophores.
