As seen in Figures 1 and 2, two methods are employed to achieve microtube arrays, depending on etchant speed and uniformity: timed etching (process #1) and anchored membranes (process #2), for slow and fast etches, respectively.
PEEK single splat image analysis showed that splats per mm2 were highest on the steel grit blasted substrate followed by degreased and etched respectively.
Etch rates of 400 nm min− 1 and 3.4 nm min− 1 were determined for wet and dry etching, respectively.
The thin layers of Si3N4 and SiO2, are used as etching masks, and patterned by reactive etching and buffered oxide etch (BOE), respectively.
Anisotropy (A) increased as decrease in pressure and O2 gas flow rate, and increase in platen power (straight and dash lines represent anisotropy and etch rate, respectively) [51].
The efficiencies of early cell adhesion, which is necessary for the growth and proliferation of cells, were 62, 17, and 65% on the pristine, fluorinated, and etched graphene surface, respectively, for 6 h of cell culture.
Figure 1a, b shows, respectively, the etch rate and porosity as a function of the current density used for the two different electrolytes.
Specimens were Nb- and Cr-ion etched before coating deposition, respectively.
But in 1997 they made a triumphant return, releasing Urban Hymns and two anthemic singles, Bittersweet Symphony and The Drugs Don't Work, which reached No 2 and No 1 respectively, and etched themselves on the nation's musical landscape.
Etching involves use of dilute nitric acid, Dutch mordant (hydrochloric acid plus potassium chlorate) or ferric chloride to etch the zinc or copper (respectively) metal plate.
