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Related Concept Videos

UV–Vis Spectrometers01:14

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...

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Short Aromatic Blocks Enhance Styrene Conversion in Polymer Cubosome Formation via Polymerization-Induced Self-Assembly.

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Light-Triggered Reversible Swelling of Azobenzene-Containing Block Copolymer Worms via Confined Deformation Prepared by Polymerization-Induced Self-Assembly.

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Skin-Friendly Flexible Ultraviolet Detectors Based on Reversibly Deformable Worm-Like Polymer Nanoparticles.

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Azobenzene-Containing Liquid Crystalline Twisted Ribbons via Polymerization-Induced Hierarchical Self-Assembly.

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Light-Triggered Reversible Swelling of Polymeric Spheres via Surfactant-Free RAFT Emulsion Polymerization-Induced Self-Assembly.

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Perpendicularly aligned nanodomains on versatile substrates <i>via</i> rapid thermal annealing assisted by liquid crystalline ordering in block copolymer films.

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A Real-Time Solar UVA Dose Monitor Based on Recyclable Azobenzene-Containing Elastomer Fabrics.

Tianhao Chen1, Zhefeng Liu1, Sha Sha1

  • 1School of Materials Science and Engineering, Beihang University, No. 37 Xueyuan Road, Haidian, Beijing, 100191, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|August 7, 2025
PubMed
Summary

A new flexible fabric detector offers real-time UVA monitoring. This wearable device combines advanced materials for accurate solar ultraviolet radiation detection and health protection.

Keywords:
azobenzene‐thermoplastic polyurethanerecyclablesolar UVA monitorstretching‐insensitive

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Wearable Technology

Background:

  • Solar ultraviolet (UV) radiation poses significant health risks, including skin cancer and erythema.
  • There is a critical need for advanced, reliable solar UV detectors for health monitoring and protection.

Purpose of the Study:

  • To develop a novel, intrinsically flexible UVA detector with real-time monitoring capabilities.
  • To engineer a high-performance, recyclable UV detection system for personal solar exposure assessment.

Main Methods:

  • Fabrication of oriented composite fabrics using main-chain azobenzene-thermoplastic polyurethane elastomers (Az-TPU) and piezoelectric poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] nanogenerators.
  • Utilizing azobenzene groups and MDI as hard segments, with PTMG as the soft segment, to create a physical cross-linking network and microphase-separated structure.
  • Integrating Bluetooth communication for real-time data transmission to mobile devices.

Main Results:

  • The developed fabric exhibits superior photoelectrical conversion capabilities due to its unique molecular architecture and internal stress generation.
  • The detector demonstrates a rapid 80 ms response time and maintains excellent linearity (R² = 0.997) over a wide light intensity range (0.05-50 mW·cm⁻²).
  • Dynamic UV light monitoring was achieved under a 10% tensile strain, enabling continuous UVA intensity and dose tracking.

Conclusions:

  • The intrinsically flexible UVA detector offers high performance, recyclability, and real-time monitoring capabilities.
  • This technology has significant potential for industrial applications in wearable solar UV monitoring systems.
  • The device enables continuous UVA monitoring, crucial for protecting against the harmful effects of solar radiation.