H2020Индивидуална стипендия2016–2018

INTFACDYN · Studying Interfacial Dynamics by Interferometric Scattering

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2016-06-01 → 2018-05-31
Финансиране от ЕС: 195 455 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Наночастиците при границата между две течности се наблюдават чрез специална микроскопия, за да се разбере как се движат и прикрепят. Това помага за подобряване на химическите катализатори, оптичните устройства и процесите по създаване на емулсии.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Studying Interfacial Dynamics by Interferometric Scattering

Nanoparticles at interfaces are a central research topic in colloidal science. They have various technological applications, related to, for example, emulsification, optical devices, and chemical catalysis. In addition, nanoparticles at interfaces make an ideal experimental model system for investigating topics in condensed matter physics. The primary objective of this work was to utilize the unique imaging properties of scattering microscopy to directly visualize and thereby understand the fast dynamics of nanoparticles (NPs) at fluid-fluid interfaces. Specifically, this work has addressed the following questions: (i) What are the characteristics of inertial behaviour of NPs at fluid interfaces? (ii) Does bulk fluid inertia contribute to this behaviour? (iii) What is the adsorption dynamics of NPs to fluid-interfaces? (iv) Does fast dynamics of NPs at interfaces differ from slow dynamics and, if yes, how and in what way is it affected by time-scales? In addition to the specific questions listed above, the aim of this work was to develop an imaging platform based on scattering microscopy, and to establish it as a powerful tool to study high-speed dynamics of NPs in general with capabilities that are several orders of magnitude beyond what is currently possible with state-of-the-art single particle tracking approaches.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

We propose to apply a cutting-edge optical microscopy based on interferometric scattering microscopy (iSCAT) to directly study the dynamics of the fundamental system of nanoparticles at fluid interfaces. Nanoparticles at interfaces are a central research topic in colloidal science. They have various technological applications, related to, for example, emulsification, optical devices, and chemical catalysis. In addition, nanoparticles at interfaces make an ideal experimental model system for investigating topics in condensed matter physics, such as the dynamics of partially confined fluids and the phase behavior of 2D fluids. While many experimental studies have characterized the self-assembly, structure, and motion of such particles, important questions relating to adsorption/desorption dynamics and inertial effects, remain unanswered due to technical limitations of temporal and spatial resolution. iSCAT offers exclusive accessibility to answer these questions, through unprecedented capabilities of nanoparticle tracking in three dimensions with simultaneous nanometre spatial and microsecond temporal precision. Specifically, we aim at achieving two objectives for the first time; (i) observing and quantifying inertial effects at fluid-fluid interfaces, and (ii) characterizing the three-dimensional interfacial behavior of nanoparticles at interfaces. Overall, these objectives aim at expanding and generalising interfacial microrheology to much shorter time-scales, as well as to provide critical insight to the mechanisms underlying particle stability and self-assembly at interfaces.

Оригинален текст от CORDIS (на английски).

Участници

THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD · OxfordКоординаторОбединеното кралство