Olesya O Kapitanova, Anastasiya V Kornilova, Nikita D Mitiushev, Irina A Veselova, Viktor Yu Timoshenko, Andrei N Baranov
{"title":"ZnO/Ag纳米结构表面增强拉曼光谱：楔形微腔的影响。","authors":"Olesya O Kapitanova, Anastasiya V Kornilova, Nikita D Mitiushev, Irina A Veselova, Viktor Yu Timoshenko, Andrei N Baranov","doi":"10.1088/1361-6528/ae01ab","DOIUrl":null,"url":null,"abstract":"<p><p>Zinc oxide (ZnO) nanostructures with deposited silver (Ag) nanoparticles (NPs) exhibit exceptional opportunities for highly sensitive molecular diagnostics by means of the surface-enhanced Raman spectroscopy(SERS). Here we use the well known method of the hydrothermal synthesis of arrays of ZnO nanorods (NRs), followed with deposition of Ag-NPs by facile photochemical reduction under UV-light illumination to obtain ZnO-NRs/Ag-NPs hybrid structures with superior SERS activity. SERS spectra of a probe analyte, i.e. Rhodamine R6G molecules absorbed in an optimized ZnO-NRs/Ag-NPs structures, are detected in a wide range of the analyte concentration from 10<sup>-6</sup>to 10<sup>-14</sup>M. Numerical simulations of the light scattering in ZnO-NRs/Ag-NPs structures allow us to show that the wedge-like morphology of ZnO-NRs plays a crucial role in the 3D electromagnetic enhancement of the SERS signal, which can be as high as 3•10<sup>8</sup>for the lowest analyte concentration. The revealed high SERS activity of the obtained ZnO/Ag hybrid nanostructures together with the simplicity of their preparation open new prospects for their application in analytical chemistry, sensorics and photonics.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"ZnO/Ag nanostructures for surface-enhanced Raman spectroscopy: effect of wedge microcavity.\",\"authors\":\"Olesya O Kapitanova, Anastasiya V Kornilova, Nikita D Mitiushev, Irina A Veselova, Viktor Yu Timoshenko, Andrei N Baranov\",\"doi\":\"10.1088/1361-6528/ae01ab\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Zinc oxide (ZnO) nanostructures with deposited silver (Ag) nanoparticles (NPs) exhibit exceptional opportunities for highly sensitive molecular diagnostics by means of the surface-enhanced Raman spectroscopy(SERS). Here we use the well known method of the hydrothermal synthesis of arrays of ZnO nanorods (NRs), followed with deposition of Ag-NPs by facile photochemical reduction under UV-light illumination to obtain ZnO-NRs/Ag-NPs hybrid structures with superior SERS activity. SERS spectra of a probe analyte, i.e. Rhodamine R6G molecules absorbed in an optimized ZnO-NRs/Ag-NPs structures, are detected in a wide range of the analyte concentration from 10<sup>-6</sup>to 10<sup>-14</sup>M. Numerical simulations of the light scattering in ZnO-NRs/Ag-NPs structures allow us to show that the wedge-like morphology of ZnO-NRs plays a crucial role in the 3D electromagnetic enhancement of the SERS signal, which can be as high as 3•10<sup>8</sup>for the lowest analyte concentration. The revealed high SERS activity of the obtained ZnO/Ag hybrid nanostructures together with the simplicity of their preparation open new prospects for their application in analytical chemistry, sensorics and photonics.</p>\",\"PeriodicalId\":19035,\"journal\":{\"name\":\"Nanotechnology\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nanotechnology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1088/1361-6528/ae01ab\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanotechnology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1088/1361-6528/ae01ab","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
ZnO/Ag nanostructures for surface-enhanced Raman spectroscopy: effect of wedge microcavity.
Zinc oxide (ZnO) nanostructures with deposited silver (Ag) nanoparticles (NPs) exhibit exceptional opportunities for highly sensitive molecular diagnostics by means of the surface-enhanced Raman spectroscopy(SERS). Here we use the well known method of the hydrothermal synthesis of arrays of ZnO nanorods (NRs), followed with deposition of Ag-NPs by facile photochemical reduction under UV-light illumination to obtain ZnO-NRs/Ag-NPs hybrid structures with superior SERS activity. SERS spectra of a probe analyte, i.e. Rhodamine R6G molecules absorbed in an optimized ZnO-NRs/Ag-NPs structures, are detected in a wide range of the analyte concentration from 10-6to 10-14M. Numerical simulations of the light scattering in ZnO-NRs/Ag-NPs structures allow us to show that the wedge-like morphology of ZnO-NRs plays a crucial role in the 3D electromagnetic enhancement of the SERS signal, which can be as high as 3•108for the lowest analyte concentration. The revealed high SERS activity of the obtained ZnO/Ag hybrid nanostructures together with the simplicity of their preparation open new prospects for their application in analytical chemistry, sensorics and photonics.
期刊介绍：
The journal aims to publish papers at the forefront of nanoscale science and technology and especially those of an interdisciplinary nature. Here, nanotechnology is taken to include the ability to individually address, control, and modify structures, materials and devices with nanometre precision, and the synthesis of such structures into systems of micro- and macroscopic dimensions such as MEMS based devices. It encompasses the understanding of the fundamental physics, chemistry, biology and technology of nanometre-scale objects and how such objects can be used in the areas of computation, sensors, nanostructured materials and nano-biotechnology.
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