He's a master in the art of printmaking...or the process of creating
etchings.
The British Museum in London has announced it will house a free display, called At Home: Royal
Etchings By Queen Victoria And Prince Albert, from July 18 to September to mark the bicentenary of both their births.
From these advances arose processing technologies such as any-layer or everylayer printing and
etching and advanced tenting processing (ATP).
Throughout the past years, many studies have focused on finding alternative methods to conventional acid
etching that are less damaging to the tooth structure and simultaneously yield optimum bond strength.
Over the last decades, laser
etching especially has been developed as a suggested alternative technique for enamel surface pretreatment in response to the disadvantages of the conventional acid
etching method (14-16).
Whistler and Pennell:
Etching the City features 38 prints that capture the changing landscape of New York and London (and their surrounding areas), in the final years of the industrial revolution.
Etching as a printing method is thought to go as far back as the 15th century and the exhibition features artwork created by several different forms of the process.
Acid texturing for DWS mc silicon wafers by
etching in HF/HN[O.sub.3]/[H.sub.2]O/additive solution (49wt% HF: 65wt% HN[O.sub.3]: [H.sub.2]O=1:2:1.2 by volume, 10[degrees]C) and subsequent cleaning in KOH solution and HF/HCl solution via RENA Inline text machine.
Therefore, preliminary phosphoric acid
etching was recommended to improve the adhesion to enamel.19,20,21
The alkaline solution etches <111> planes with a very low
etching rate compared with other planes, especially <100> planes (the
etching rate ratio for <100> to <111> planes is 10~35).