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Purdue University: 3D Printing Nanoantenna Arrays for Metasurfaces https://ift.tt/2XBXNAL Jithin Prabha of Purdue University explores AM processes using 2 photon polymerization, useful for a variety of applications such as optics, along with metamaterials and surfaces, microfluidics, tissue engineering and bioprinting, and further exploration of innovative ways to deliver drugs. Prabha outlines his work in ‘3D Printing of Nanoantenna Arrays for Optical Metasurfaces,’ discussing how nanostructures can be fabricated in what could be referred to as ‘true 3D printing.’ In this study, Prabha employs 2 photon fabrication to make a metasurface printed via diabolo antenna arrays on a glass substrate, then coated in gold. While microfabrication can be performed in numerous ways, Prabha points out that multiphoton absorption is superior due to the capability for 3D printing complex geometries with just one laser beam.
An 800nm femtosecond laser was used to create the nanoantenna arrays, which were consequently studied using a scanning electron microscope and a Fourier Transform Infrared Spectrometer (FTIR).
In using this method, the antennas were designed in Autodesk Inventorand then sliced into layers using slic3r. The array of antennas was printed at 40×40 µm or 50×50 µm on a coverglass substrate, coated with gold of 55nm in thickness by e-beam evaporation. Varied optimization parameters included:
3D printing is applicable in nearly every industry today but is extremely useful to researchers and scientists endeavoring to create complex geometries and structures, and often on the nano- or micro-scale from fabricating metal structures to making high-resolution parts, and devices for more streamlined microfabrication. What do you think of this news? Let us know your thoughts! Join the discussion of this and other 3D printing topics at 3DPrintBoard.com. [Source / Images: ‘ 3D Printing of Nanoantenna Arrays for Optical Metasurfaces’] Please enable JavaScript to view the comments powered by Disqus.Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com June 28, 2019 at 02:42AM
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