Liquid-activated quantum emission from pristine hexagonal boron nitride for nanofluidic sensing.
Liquid-activated quantum emission from pristine hexagonal boron nitride for nanofluidic sensing.
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DOI：
10.1038/s41563-023-01658-2
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发表时间：
2023-10
期刊：
影响因子：
41.2
通讯作者：
Radenovic, Aleksandra
中科院分区：
文献类型：
--
作者：
Ronceray, Nathan;You, Yi;Glushkov, Evgenii;Lihter, Martina;Rehl, Benjamin;Chen, Tzu-Heng;Nam, Gwang-Hyeon;Borza, Fanny;Watanabe, Kenji;Taniguchi, Takashi;Roke, Sylvie;Keerthi, Ashok;Comtet, Jean;Radha, Boya;Radenovic, Aleksandra
限制在原子尺度的液体可以表现出全新的特性。然而，只有间接和整体测量才能在如此极端的限制下进行，这就需要能够在分子水平上直接成像的新型光学方法。在这里，我们利用六方氮化硼表面的单光子发射器发出的荧光，在纳米限制的液体中进行分子成像和传感。发射源自有机溶剂分子对天然表面缺陷的化学吸附，通过相邻缺陷的空间相关激活揭示界面处的单分子动力学。发射器光谱进一步提供了局部介电特性的直接读数，揭示了纳米级限制下不断增加的介电阶数。液体激活的天然六方氮化硼缺陷弥合了固态纳米光子学和纳米流体学之间的差距，为纳米级传感和光流体学开辟了新的途径。六方氮化硼的二维晶体浸入普通溶剂中时会发出荧光。现在，这种现象被用于纳米级操作的液体传感器的设计中。
Liquids confined down to the atomic scale can show radically new properties. However, only indirect and ensemble measurements operate in such extreme confinement, calling for novel optical approaches that enable direct imaging at the molecular level. Here we harness fluorescence originating from single-photon emitters at the surface of hexagonal boron nitride for molecular imaging and sensing in nanometrically confined liquids. The emission originates from the chemisorption of organic solvent molecules onto native surface defects, revealing single-molecule dynamics at the interface through the spatially correlated activation of neighbouring defects. Emitter spectra further offer a direct readout of the local dielectric properties, unveiling increasing dielectric order under nanometre-scale confinement. Liquid-activated native hexagonal boron nitride defects bridge the gap between solid-state nanophotonics and nanofluidics, opening new avenues for nanoscale sensing and optofluidics. Two-dimensional crystals of hexagonal boron nitride become fluorescent when immersed in common solvents. Now, this phenomenon is used in the design of in-liquid sensors operating at the nanometre scale.
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影响因子：
17.1
作者：
Glushkov E;Macha M;Räth E;Navikas V;Ronceray N;Cheon CY;Ahmed A;Avsar A;Watanabe K;Taniguchi T;Shorubalko I;Kis A;Fantner G;Radenovic A
通讯作者：
Radenovic A
影响因子：
3.7
作者：
Henck, Hugo;Pierucci, Debora;Ouerghi, Abdelkarim
通讯作者：
Ouerghi, Abdelkarim
影响因子：
41.2
作者：
Hayee, Fariah;Yu, Leo;Dionne, Jennifer A.
通讯作者：
Dionne, Jennifer A.
影响因子：
9.5
作者：
Choi, Sumin;Toan Trong Tran;Aharonovich, Igor
通讯作者：
Aharonovich, Igor
影响因子：
38.3
作者：
Comtet, Jean;Grosjean, Benoit;Radenovic, Aleksandra
通讯作者：
Radenovic, Aleksandra