Nanophotonic Control of the Forster Resonance Energy Transfer Efficiency
Nanophotonic Control of the Forster Resonance Energy Transfer Efficiency
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DOI：
10.1103/physrevlett.109.203601
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发表时间：
2012-11-13
影响因子：
8.6
通讯作者：
Vos, Willem L.
中科院分区：
文献类型：
--
作者：
Blum, Christian;Zijlstra, Niels;Vos, Willem L.
我们研究了局域光态密度（LDOS）对从供体到受体的福斯特共振能量转移（FRET）速率和效率的影响。供体和受体是由双链DNA的短链分开的染料分子。LDOS通过小心地将FRET对定位在镜子附近来控制。我们发现，能量转移效率的变化与LDOS，并且，与理论一致，能量转移速率是独立的LDOS，这使得一个定量控制FRET系统在一个新的方式。我们的研究结果意味着特征福斯特距离的变化，与此相反，共同的传说，这个距离是固定的一个给定的FRET对。
We have studied the influence of the local density of optical states (LDOS) on the rate and efficiency of Forster resonance energy transfer (FRET) from a donor to an acceptor. The donors and acceptors are dye molecules that are separated by a short strand of double-stranded DNA. The LDOS is controlled by carefully positioning the FRET pairs near a mirror. We find that the energy transfer efficiency changes with LDOS, and that, in agreement with theory, the energy transfer rate is independent of the LDOS, which allows one to quantitatively control FRET systems in a new way. Our results imply a change in the characteristic Forster distance, in contrast to common lore that this distance is fixed for a given FRET pair.