Some hotel signage etchedpattern is needed, it is how to make the principle of it?
一些酒店的标识牌的花纹是需要蚀刻的,那是如何制作的原理呢?
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Because the etchedpattern will be effected by many factors, many technical difficulties such as getting the ideal etchedpattern and monitoring the etching process have not been solved yet.
Using nanofabrication techniques, the researchers etched tiny holes into the nitride to make a desired pattern, giving the waveguide the cloaking refractive index profile.