Wikipedia article about PhD thesis During my PhD, I developed a new microscopy technique and soon I will submit a major paper presenting the work. I am now in the job market looking for postdocs, not necessarily in the same field where I did my PhD work. 

Would it be a good idea to make a Wikipedia page on the technique I developed? Would it be perceived as a signal that I have no good science to show (I don't think so)? Thanks!
No, it would not be advisable to create a Wikipedia page solely devoted to the new technique. If you are one of the sole people responsible for the technique and its development, you run the risk of creating a conflict of interest. Even without that issue, a new technique likely has few published sources to support it, so you will have difficulty establishing notability. Without additional support from reliable sources, your new page may be deleted.

Luckily, there are numerous other options for promoting your work in laymen-friendly ways. It may be feasible (and may even provide better visibility of your work, even to prospective employers) to write a few blog entries about the approach, produce a short Youtube video about it, or even a dedicated wiki, if you see the technique undergoing changes or optimizations in the near future.