Non plasmonic semiconductor quantum SERS probe as a pathway for in vitro cancer detection.
Non plasmonic semiconductor quantum SERS probe as a pathway for in vitro cancer detection.
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DOI:
10.1038/s41467-018-05237-x
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发表时间:
2018-08-03
影响因子:
16.6
通讯作者:
Tan B
中科院分区:
文献类型:
--
作者:
Haldavnekar R;Venkatakrishnan K;Tan B
Surface-enhanced Raman scattering (SERS)-based cancer diagnostics is an important analytical tool in early detection of cancer. Current work in SERS focuses on plasmonic nanomaterials that suffer from coagulation, selectivity, and adverse biocompatibility when used in vitro, limiting this research to stand-alone biomolecule sensing. Here we introduce a label-free, biocompatible, ZnO-based, 3D semiconductor quantum probe as a pathway for in vitro diagnosis of cancer. By reducing size of the probes to quantum scale, we observed a unique phenomenon of exponential increase in the SERS enhancement up to ~106 at nanomolar concentration. The quantum probes are decorated on a nano-dendrite platform functionalized for cell adhesion, proliferation, and label-free application. The quantum probes demonstrate discrimination of cancerous and non-cancerous cells along with biomolecular sensing of DNA, RNA, proteins and lipids in vitro. The limit of detection is up to a single-cell-level detection. Surface enhanced Raman scattering is a bio-analytical tool and the development and optimisation of probes is an active area of investigation. Here, the authors report on the development and testing of biocompatible semiconductor zinc oxide quantum probes on a platform for cell adhesion and analysis.
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DOI:
10.1007/s00339-004-2933-2
发表时间:
2004-12-01
影响因子:
2.7
作者:
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通讯作者:
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影响因子:
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通讯作者:
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通讯作者:
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