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Related Concept Videos

Bioplastics01:27

Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
Total Internal Reflection Fluorescence Microscopy01:05

Total Internal Reflection Fluorescence Microscopy

Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid surface with a higher refractive index, such as a glass coverslip. TIRF only allows fluorophores in proximity to the solid surface to be excited. When light from a medium with a lower refractive index (such as air) hits the glass coverslip at a critical angle, the light undergoes total internal reflection stead of passing through the glass.

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Updated: Jul 8, 2026

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
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Toward Sustainable Optics: Fully Biomass-Based Vitrimer Film for Near-Infrared Transparency.

Zihao Feng1,2, Yuhan Huang1, Jiatian Zhu1

  • 1School of Food and Liquor Engineering, Sichuan University of Science and Engineering, Yibin 644000, P. R. China.

Biomacromolecules
|July 7, 2026
PubMed
Summary

Researchers developed a sustainable, biomass-derived film transparent to near-infrared (NIR) light. This novel material offers excellent optical properties and self-healing capabilities for advanced applications like night vision and anticounterfeiting.

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Soft Lithographic Procedure for Producing Plastic Microfluidic Devices with View-ports Transparent to Visible and Infrared Light

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Sustainable Materials

Background:

  • Visible-opaque, near-infrared (NIR)-transparent materials are crucial for security, night vision, and anticounterfeiting.
  • Current materials often rely on inorganic compounds or petroleum-derived polymers, posing sustainability and environmental challenges.

Purpose of the Study:

  • To develop a fully biomass-derived, NIR-transparent vitrimer film.
  • To address the limitations of conventional materials regarding sustainability and environmental impact.

Main Methods:

  • Synthesized a vitrimer film using diglycidyl ether of daidzein (DGED), dimer fatty acid (DFA), and lignin.
  • Characterized the film's optical transmittance, mechanical strength, stability, and self-healing properties.

Main Results:

  • The film achieved >80% transmittance in the NIR region and blocked >90% of visible light.
  • Demonstrated high mechanical strength, excellent stability (water, solvents, heat), and remarkable self-healing/reprocessing capabilities.
  • The preparation process avoided toxic organic solvents.

Conclusions:

  • The biomass-derived vitrimer film offers a sustainable and versatile alternative for advanced NIR optical applications.
  • Potential applications include privacy protection, secure anticounterfeiting, and night vision imaging.
  • Highlights the potential of bio-based dynamic covalent networks for high-performance materials.