References

phmath

Вестник Государственного университета просвещения. Серия: Физика-Математика

Bulletin of Federal State University of Education. Series: Physics and Mathematics

2949-50832949-5067

Federal State University of Education

10.18384/2310-7251-2017-4-103-113

phmath-515

Research Article

Статьи

ВЛИЯНИЕ МОРФОЛОГИИ ГРАНУЛИРОВАННЫХ СЕРЕБРЯНЫХ ПЛЁНОК НА ОРИЕНТАЦИЮ МОЛЕКУЛ И ИОННОЕ ЗАГРЯЗНЕНИЕ НЕМАТИЧЕСКОГО ЖИДКОГО КРИСТАЛЛА

EFFECT OF GRANULAR SILVER FILMS MORPHOLOGY ON THE MOLECULES ORIENTATION AND ION CONTAMINATION OF NEMATIC LIQUID CRYSTAL

Коншина

Елена Анатольевна

Konshina

Elena A.

eakonshina@mail.ru

Щербинин

Дмитрий Павлович

Shcherbinin

Dmitrii P.

shcherbinin.dmitrij@gmail.com

Санкт-Петербургский национальный исследовательский университет информационных технологий, механики и оптикиРоссияSaint-Petersburg National Research University of Information Technologies, Mechanics and OpticsRussian Federation

2017

20012023

04103113

2023

Коншина Е.А., Щербинин Д.П.

Konshina E.A., Shcherbinin D.P.

Данная работа распространяется под лицензией Creative Commons Attribution 4.0.

This work is licensed under a Creative Commons Attribution 4.0 License.

https://www.physmathmgou.ru/jour/article/view/515

В данной работе исследуется структура серебряных гранулированных плёнок на межфазных границах ЖК ячеек и их влияние на ориентацию молекул и ионное загрязнение ЖК. Гранулированные серебряные плёнки осаждались на стеклянные подложки покрытые электродами ITO и тонкими пленками a-C:H. После отжига при температуре 200 °C морфология структуры серебряных плёнок изменялась. Серебряные гранулы принимали сфероидную форму со средним диметром 30 нм, каналы между гранулами уширялись. Изменение структуры серебряной пленки привело к увеличению фазовой задержки в слое ЖК и уменьшению угла преднаклона директора от 51° до 7°. Плотность ионных примесей в ЖК ячейке с отожженной серебряной плёнкой была в три раза выше, чем в ячейке с неотоженной плёнкой. Показано влияние ориентации ЖК молекул на поверхности гранулированной серебряной плёнки на интенсивность и батохромный сдвиг пика плазменного резонанса в спектрах поглощения.

The structure of granular silver films at the interface of liquid crystal (LC) cells and their influence on LC molecule orientation and ionic contamination are examined. Granular silver films were deposited on a glass substrate covered with an ITO electrode and a-C:H thin films. The morphology structure of the silver films was changed after their annealing at 200 °C. The silver granules became spheroidal with an average diameter of -30 nm and the channel area between them increased. The change in the structure of the Ag films led to an increase in the phase retardation and a decrease in the pretilt angle of the LC director from 51° to 7°. The density of ionic impurities in the LC cell with the annealed silver film was three times more than in the LC cell with the unannealed film. The impact of the alignment of the LC molecules at the surface of the granular silver films on the intensity of the plasmonic peak and its red shift in the absorption spectra is shown.

серебряные плёнкиa-C:H плёнкинематический жидкий кристаллионные примесиспектры поглощения

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The authors declare that there are no conflicts of interest present.