A semiconductor laser element has the following structure. Said mechanism would consist principally of a panel located generally below the armpit. The plug can be inserted into a jack, which can operate to open one or more switches within the jack, thereby freeing any debris that may have accumulated under the switches. The method divides the image to be compressed into a plurality of regions. The method includes: lithographically forming a plasmonic nanostructure on a substrate; encapsulating the plasmonic nanostructure in high temperature resistant material; annealing the plasmonic nanostructure; and removing the high temperature resistant material to reveal the annealed plasmonic nanostructure.