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Herein, a hybrid substrate for surface‐enhanced Raman scattering (SERS) is fabricated, which couples localized surface plasmon resonance (LSPR), charge transfer (CT) resonance, and molecular resonance. Exfoliated 2D TiS2 nanosheets with semimetallic properties accelerate the CT with the tested analytes, inducing a remarkable chemical mechanism enhancement. In addition, the LSPR effect is coupled with...
An atomically thin TaSe2 sample, approximately containing two to three layers of TaSe2 nanosheets with a diameter of 2.5 cm is prepared here for the first time and applied on the detection of various Raman‐active molecules. It achieves a limit of detection of 10−10 m for rhodamine 6G molecules. The excellent surface‐enhanced Raman scattering (SERS) performance and underlying mechanism of TaSe2 are...
The regulation of the ion selectivity by electric field and ion association on the Li+ selectivity of carboxyl functionalized graphene nanopores are investigated by molecular dynamics simulation. Carboxylate graphene nanopores of sub‐2 nm exhibit excellent Li+ selectivity under the electric field of 1.0 V nm−1. The results show that ion association inspired by electric field may be a key factor affecting...
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