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UV-curable thiol-ene system for broadband infrared transparent objects.

Piaoran Ye1, Zhihan Hong1, Douglas A Loy2,3

  • 1Wyant College of Optical Sciences, The University of Arizona, 1630 E. University Blvd, Tucson, AZ, 85721, USA.

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|December 16, 2023
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Summary

A novel photo-curable liquid material offers wide-spectrum infrared transparency. This thiol-ene resin enables fast fabrication of infrared optics and micro-reactors using 3D printing.

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Area of Science:

  • Materials Science
  • Optics
  • Polymer Chemistry

Background:

  • Conventional infrared transparent materials often require complex thermal or mechanical processing.
  • Existing materials may have limitations in transparency range or fabrication methods.

Purpose of the Study:

  • To develop a photo-curable liquid material for broad infrared transparency.
  • To enable efficient fabrication of infrared optical components and devices.

Main Methods:

  • Utilized a thiol-ene click chemistry strategy with custom-designed C, H, and S containing monomers.
  • Characterized optical, refractive index, thermal, and mechanical properties of the synthesized resin.
  • Employed molding and two-photon 3D printing for object fabrication.

Main Results:

  • Achieved transparency across visible, mid-wave infrared (MWIR), and long-wave infrared (LWIR) spectrum.
  • Successfully fabricated objects with tailored optical and mechanical properties.
  • Demonstrated high-resolution infrared optics and micro-reactors for temperature monitoring.

Conclusions:

  • The UV-curable thiol-ene system provides a versatile and rapid method for fabricating thin, infrared-transparent objects.
  • This material shows significant potential for advanced infrared optics and microfluidic applications.
  • Offers a convenient alternative to traditional processing for infrared transparent materials.