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Enzyme-Programmable Microgel Lasers for Information Encoding and Anti-Counterfeiting.

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Researchers developed a biologically programmable laser using enzyme-responsive hydrogels for secure information encoding. This biomaterial approach allows tunable lasing wavelengths and spatial control for advanced anti-counterfeiting applications.

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Area of Science:

  • Biomaterials science
  • Optics and photonics
  • Nanotechnology

Background:

  • Microscale lasers offer unique spectral properties for information encoding and anti-counterfeiting.
  • Natural biomaterials provide complex, tunable optical responses compared to artificial materials.
  • Precise control over lasing wavelengths and locations using biomolecules remains a significant challenge.

Purpose of the Study:

  • To develop a biologically programmable laser system.
  • To achieve tunable lasing wavelengths and spatial control using biomolecular activities.
  • To demonstrate advanced anti-counterfeiting and secure communication capabilities.

Main Methods:

  • Utilized enzyme-responsive hydrogel droplets within a Fabry-Pérot microcavity.
  • Exploited hydrogel swelling properties to tune lasing wavelengths.
  • Employed inkjet printing for fabricating multiwavelength laser arrays.
  • Investigated the influence of 3D network structure and droplet curvature on lasing properties.
  • Applied hyperspectral laser imaging for enhanced security features.

Main Results:

  • Demonstrated tunable lasing wavelengths controlled by biomolecular activity.
  • Showcased precise control over lasing thresholds and resonance wavelengths based on hydrogel structure and curvature.
  • Successfully implemented inkjet-printed multiwavelength laser encoding for anti-counterfeiting.
  • Validated the use of hyperspectral laser images for high-level security applications.

Conclusions:

  • Developed a novel biologically programmable laser device.
  • Biomolecular activities can effectively manipulate nanoscale lasing.
  • The technology offers new avenues for biosynthetic laser development, secure communication, and smart sensing.