The phrase "a layer of gold" is correct and usable in written English.
It can be used when describing a physical layer or coating made of gold, often in contexts related to jewelry, electronics, or materials science.
Example: "The ring was beautifully crafted with a layer of gold that shimmered in the light."
Alternatives: "a coating of gold" or "a film of gold."
Going platinum: An electron microscope image shows platinum accumulated on a layer of gold.
The matchmaking Mrs. Jennings appears in a rust and burgundy gown with a layer of gold polka dots.
There are several other options for storing those pictures, like "archive quality" recordable discs that use a layer of gold to preserve information.
The reduction of Au(111) cations by the pDA film, forming a layer of gold particles, was monitored using SPR.
In the typical process used to make costume jewelry, a layer of gold is electroplated over a base of nickel and other alloys.
A layer of gold was plated on the surface of the heating tube in order to reflect and focus infrared light and enhance the effect of heating.
These data indicated the formation of a layer of gold-silver alloy on the nanocores and not the formation of discrete gold and silver nanoparticles, which would have shown six individual peaks: 38.2°, 44.4°, and 64.6° corresponding to (111), (200), and (220) planes for gold [59] and 38.4°, 44.3°, and 64.7° corresponding to (111), (200), and (220) planes for silver [60], respectively.
The samples are cut with a scalpel and coated with a thin layer of gold using an ion sputter apparatus E-10100 Ion Sputter, Hitachi Ltd ,Tokyo, Japan).
Thereafter, slides were washed twice in PBS, dehydrated through a series of graded ethanol, critical-point-dried, and coated with a layer of palladium-gold.
His objects composed of industrial waste were sometimes painted with a thin layer of gold, a signature move for César, who also designed the French Movie Award, known commonly as the "César".
Next the researchers deposited an ultrathin, dilute layer of carbon nanotubes to act as a source electrode, followed by a layer of organic materials to act as the channel, and finally a top layer of gold as a drain electrode.
