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Need a macro lens focusing to less than 1µm distance?
  • karlkarl

    Then this development is for you:

    The result is a very strong and flexible flat optical lens that is 300 times thinner than a sheet of paper and weighs a microgram — next to nothing. At the same time, it has a precise and adjustable three-dimensional focus that allows a detailed view of objects as small as 200 nanometres long at wavelengths ranging from visible to near infrared.

    Link: News Article

    Link: Scientific paper

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