The phrase "a thickness of around" is correct and usable in written English.
It can be used when describing an approximate measurement of thickness in various contexts, such as construction, manufacturing, or materials science.
Example: "The board should have a thickness of around 2 inches to ensure stability."
Alternatives: "an approximate thickness of" or "a thickness of approximately".
In addition, especially for the OCT retinal imaging, the retina and choroid have thick multi-layered structures with a thickness of around 0.6 mm, and hence a long focal range is required.
The graphene-tissue composites developed here have a thickness of around 60 µm and areal densities in the 0.6 2.4 mg cm−2 range.
The nano-sheets have a thickness of around 250 nm and the size of the micro-particles is up to around 10 μm.
Compared to the bulk carbon nitride (CN-B), the thin-layered CN-S with a thickness of around 4 nm possessed the large specific surface area, enlarge electronic-band structure, fast photogenerated electron-hole transfer capability, and increased charge lifetime.
The titanium oxide layer (TiO x ) stays present with a thickness of around 35 nm.
The PEG GO system was of about 50 nm and has a thickness of around 1.5 nm, which reaches up to 2 nm after HPPH loading (Fig. 40).
EPD was employed to deposit PZT films directly from the hydrothermal PZT suspensions using a deposition voltage of 4 V for 10 min, leading to the formation of a functional PZT film with a thickness of 5 μm around Pt wire.
This formation consists of red siltstones and shale capped by tan-colored sandstone beds that together reach a thickness of 600 to 700 ft (around 200 m).
As another important finding, silver layer thickness of around 60 nm is found to be highly useful to achieve high values of FOM.
The results show that the graphene oxide layer has uniform thickness of around 1.9 nm with 2 to 3 layers[23].
Five minutes of deposition can form continuous Ag film with the thickness of around 35 nm, as shown in Figure 3b.
