Novel coatings for transmission electron microscopy sample preparation

Emma Hookham, Oyuna Rybdylova, Simon Busbridge, Robin Holmes, Duncan Perry, Dipak Sarker

Research output: Contribution to conferenceAbstract


Sample preparation of TEM grids can require adaptation of the surface polarity to allow for easy spread of aqueous solutions. This can be done using plasma enhanced chemical vapour deposition (PECVD), but little research has been carried out on modelling the movement of the vapour through a vacuum chamber. This a challenging concept, but one which could be utilised in improving process efficiency and coating quality. Methanol is know
n to produce a hydrophobic coating when deposited using a glow discharge, but how methanol moves through a vacuum has not previously been modelled.
A model of the processes using the Computational Fluid Dynamics software ANSYS CFD has been developed. A 2D compressible flow of chamber species defined by the methanol chemical reactions follows the methodology proposed in [1]. The flow domain is shown in fig. 1 where the distribution of electron density is taken as in [2].
Original languageEnglish
Number of pages1
Publication statusPublished - 2019
EventIOP Plasma Physics Conference - Loughborough, United Kingdom
Duration: 23 Apr 201926 Apr 2019
Conference number: 46


ConferenceIOP Plasma Physics Conference
Country/TerritoryUnited Kingdom
Internet address


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