|
ИСТИНА |
Войти в систему Регистрация |
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
SYNTHESIS AND OPTICAL PROPERTIES OF THIN FILMS COMPOSED FROM WS2 NANOTUBES DECORATED WITH GOLD NANOPARTICLESтезисы доклада
- Авторы: Alexander Polyakov, Varvara Zubyuk, Tatiana Dolgova, Lena Yadgarov, Bojana Visic, Andrey Fedyanin, Reshef Tenne, Eugene Goodilin
- Сборник: Absrats of NaNoIsrael 2016, The 5th International Nanotechnology Conference & Exhibition
- Тезисы
- Год издания: 2016
- Место издания: Kenes Exhibitions Israel
- Первая страница: [477]
- Аннотация: Thin films of WS2 nanotubes (INT-WS2) decorated with gold nanoparticles are prepared using nanocomposite assemblage on the water-heptane interface and film transition onto optically transparent or semiconducting surfaces. Almost all nanotubes were found to be aligned horizontally within the 1-2 layered films. The film morphology resembles a mosaic structure of 10-25 square micron areas with in-plane textured nanotubes. Within these areas, composite particles change the reflected light polarization identically, as visualized optical microscopy in a near-crossed analyzer configuration. Optical extinction spectra of the films demonstrate several features around 490, 545, and 675 nm similar to the ones in suspension spectra, but with altered intensity ratio, possibly due to high anisotropy of the nanotubes and their texturing peculiarities in the films. At the same time, decoration with gold nanoparticles did not result in appearance of any additional peaks in both suspension and film spectra of the nanocomposites relative to the ones of pristine nanotubes. The same was observed previously for Au-INT-WS2 suspensions and described by low-barrier contact between gold nanoparticles and nanotubes. Reflectance spectra of the INT-WS2 and Au-INT-WS2 films measured using a p-polarized beam revealed an angular dependence of both films reflectance spectra, thus evidencing for the possibility of new optical applications of WS2-based materials in the future. AYP and EAG thank The Russian Scientific Foundation for financial support (grant 14-13-00871).
- Добавил в систему: Поляков Александр Юрьевич