[HN Gopher] New mirror that can be flexibly shaped improves X-ra...
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       New mirror that can be flexibly shaped improves X-ray microscopes
        
       Author : PaulHoule
       Score  : 45 points
       Date   : 2024-05-08 17:13 UTC (3 days ago)
        
 (HTM) web link (phys.org)
 (TXT) w3m dump (phys.org)
        
       | nraynaud wrote:
       | For the curious people, there are no practical refractive
       | materials for x-rays, and mirror shapes have to be 4 times more
       | accurate than equivalent refractive systems for the same
       | diffraction limit.
        
         | pmayrgundter wrote:
         | Do you know what the objective limits are with current mirrors?
         | They just say that nanometer objectives are not possible with
         | current mirrors, but no measure of SOTA
        
           | nraynaud wrote:
           | no, sorry, the friend who told me all that left the country.
        
             | pmayrgundter wrote:
             | Thanks anyways
        
       | isawityesterday wrote:
       | This article reads like it was written by GPT. Bendable X-ray
       | mirrors are an extremely common thing (using a conventional
       | linear actuator to bend silicon, for example). The novelty here
       | seems to be:
       | 
       | "Single-crystal lithium niobate is useful in X-ray technology
       | because it can be expanded and contracted by an electric field
       | and polished to make a highly reflective surface. This allows it
       | to serve as both the actuator and the reflective surface,
       | simplifying the device."
       | 
       | Pretty interesting kernel of info there, but it would be nice to
       | know how fast they're able to make corrections, and how they're
       | measuring the aberration. From the sparse info provided, they
       | take an image, look at this '2' character, and tweak 'something'
       | until it looks a little better. This suggests it's a slow
       | process, so the advantage over conventional methods is how fine a
       | correction you can make? And how much control over the surface do
       | you have, is it just 1 dimensional?
        
         | novaRom wrote:
         | Most articles today are written with LLMs. I found even entire
         | web sites devoted to certain niche hobbies are LLM generated
         | and ranked high on duck/google.
        
         | gtsnexp wrote:
         | I ran the text through gptzero.me and it scored 91% probability
         | of AI generated
        
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       (page generated 2024-05-11 23:01 UTC)