Two-photon absorbing molecules fabricate polymer features just 65 nanometers wide

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Scanning electron microscope images of woodpile-type photonic crystal structures fabricated with 520 nanometer excitation at (a) higher power and at (b) lower power using DABP. Magnified images of the structures are shown below their respective overv ...
Scanning electron microscope images of woodpile-type photonic crystal structures fabricated with 520 nanometer excitation at (a) higher power and at (b) lower power using DABP. Magnified images of the structures are shown below their respective overview images. Credit: Wojciech, H. et al.

Producing three-dimensional polymer line structures as small as 65 nanometers wide just became easier with new two-photon absorbing molecules that are sensitive to laser light at short wavelengths, allowing researchers to create them without highly sophisticated fabrication methods.


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