UV-Vis Band-Stop Filter Based on Plasmon Resonance for Fluorescent Microscopic Applications

Abstract

Разработана технология синтеза плазмонного фильтра на основе массива наночастиц. Реализо-ван прототип фильтра на основе плазмонного резонанса в массиве наночастиц серебра с двумя по-лосами поглощения 260 и 360 нм. Методом электронно-абсорбционной спектроскопии исследованы характеристики затухания фильтров в зависимости от параметров синтеза. Показана возможность достижения уровня оптического подавления фильтра до 40 дБ путем синтеза массива плазмонных наночастиц, обладающих меньшим разбросом по размерам и фрактальностью. Выявлено превосход-ство данного типа фильтра над интерференционным по диапазону регулировки положения полосы затухания.ПОЛОСНО-ЗАГРАЖДАЮЩИЙ ФИЛЬТР; ПЛАЗМОННЫЙ РЕЗОНАНС; ФЛУОРЕСЦЕНТ-НАЯ МИКРОСКОПИЯ; МОДЕЛЬ ДРУДЕ; ФРАКТАЛЫ; МЕТОД УННО-ИМАИ..A synthesis technique for plasmonic array of silver nanoparticles has been developed. Double absorption band (260 nm and 360 nm) UV-Vis filter based on plasmon resonance of functionalized silver nanoparticles array has been created. The dependence of the prototype's attenuation characteristics on synthesis parameters is investigated utilizing the Electronic Absorption Spectroscopy technique. We have proved it was possible to achieve a sufficient level of optical attenuation (up to 40 d�) by producing an array of plasmonic nanoparticles with less variations in size and less fractality while increasing the anodizing current density of the silicon matrix. The superiority of the plasmon filter over the interference filter in terms of adjusting the attenuation band position has been revealed. �AND-STOP FILTER; PLASMON RESONANCE; FLUORESCENCE MICROSCOPY; DRUDE MODEL; FRACTALS; UNNO-IMAI TECHNIQUE.

Magnetic and Plasmonic Composite Nanostructures for Creating Optical Filters at Substance and Material Diagnostics Systems

“…The results of magnetite nanoparticles size calculations according to the mathematical processing of optical absorption spectra волны полосы поглощения, поскольку диаметр и морфология пор SiO2 определяют размер и развитость агломератов наночастиц FemOn[19].…”

The characterisation of nanostructured porous silicon/silver layers via Raman spectroscopy

“…Composite porous silicon -silver materials can also act as a promising substrate for identification and structural characterization of various biological and chemical structures due to the presence of pronounced surface enhanced Raman scattering effect (SERS) [3] caused by collective oscillations in silver nanoparticle electron density. It should be noted that silver-functionalized porous silicon layers can be used in order to implement optical filters for fiber-optic communication systems [2], since the contemporary thin-film filters are expensive due to the necessity of ultra-high vacuum maintaining during the synthesis process. …”