Звіт по науково-дослідній роботі. Данько Віктор Андрійович. Нові плазмонні наноматеріали на основі латерально-впорядкованих структур благородних металів для точного експрес-аналізу високомолекулярних сполук методом спектроскопії поверхнево-підсиленого раманівського розсіювання світла. 2 етап: Виготовлення експериментальних зразків підкладок з уточненими характеристиками нанопорожнин та вивчення їх морфологічних а також оптичних характеристик.

Registration Number

0221U101544, 0120U103688 , R & D reports

Title

"New plasmonic nanomaterials based on laterally-ordered structures of noble metals for precise, rapid analysis of macromolecular compounds by spectroscopy of surface-enhanced Raman light scattering". Stage 2: Production of experimental samples of substrates with clarified characteristics of nanocavities and study of their morphological and optical characteristics.

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Head

Danko Viktor A., Кандидат фізико-математичних наук

Registration Date

22-01-2021

Organization

V. Lashkaryov Institute of semiconductor physics

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 As a result of numerical simulation of the distribution of the electric field strength in nanocavities based on noble metals and at their surface upon excitation of surface plasmons, it was found that a region of increased strength is formed inside the cavity, which, for certain cases, extends to most of its volume. This effect is practically identical both for cavities in silver layers and in layers of other substances conformally coated with a silver layer. Were made prototype samples of SERS - substrates with refined parameters for recording the spectra of high-molecular compounds, and investigated their characteristics. It is shown that the technology of interference lithography based on two-layer chalcogenide photoresists makes it possible to form effective SERS - substrates for detecting high-molecular compounds in the form of laterally ordered matrices of nanovoids with specified morphological characteristics. This is confirmed by the registration of reproducible SERS spectra of lysozyme molecules adsorbed from an aqueous solution with a concentration of 10-6 M on the surface of such substrates, and the intensity of the SERS signal from lysozyme molecules adsorbed on silver nanovoids is three times higher than on gold ones.

Product Description

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Indutnyi Ivan Z.
Lukaniuk Maria V.
Mynko Viktor I.
Sopinskyy Mykola V.

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2021-01-22