The phrase "a coating of a" is grammatically correct and can be used in written English.
It is typically used to describe a layer or film that covers a surface, often in contexts related to materials, food, or coatings.
Example: "The cake was finished with a coating of a rich chocolate ganache that added both flavor and elegance."
Alternatives: "a layer of" or "a film of".
Many flagellates have a thin, firm pellicle (outer covering) or a coating of a jellylike substance.
Adding a coating of a conductive polymer to the yarn (shown in pink, inset) further increases the capacitor's charge capacity.
The thionine functionalized MWCNTs were then abrasively transferred onto a paraffin impregnated graphite electrode followed by a coating of a thin film of nafion (Nf).
On a surface patterned with tiny pillars (white squares), and with a coating of a lubricant liquid that fills the spaces between the pillars, dome-shaped droplets of water condense but remain free to move quickly across the surface, unlike on conventional flat surfaces or ones with just the patterning, where they tend to stay stuck in place.
The key to the improved hydrophobic (water-shedding) surface is a combination of microscopic patterning — a surface covered with tiny bumps or posts just 10 micrometers (millionths of a meter) across, about the size of a red blood cell — and a coating of a lubricant, such as oil.
The study of the composition of a coating of a sand grain indicated complex path of the genesis of the soils: initially the coatings have been formed by allophanes with Fe humus complexes, then by allophanes with humus, and then by Fe humus and Al humus components.
The bedroom, too, may eventually get a coat of a soft yellow.
Google Shopping, for example, will search for the best deal on a coat of a certain design, color, and size.
"The collar puts a coat of a waterbuck over a cow; as the herd moves along, the flies sense the cow as a waterbuck and stay away".
Prior to skimming, a coat of a PVA (polyvinyl acetate) "bonding" is applied to stabilise the surface to provide something for the plaster to stick to.
I have been asked to bring a bridesmaid her purse, check a coat of a guest, and bring gifts over to the gift table.
