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Wearable Nanoplasmonic Patch Detecting Sun/UV Exposure.

Jessica G Barajas-Carmona1,2, Leydi Francisco-Aldana1,3, Eden Morales-Narváez1

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Summary

A new wearable patch changes color with sun exposure, alerting users to moderate their UV time. This low-cost device uses silver nanoparticles on nanopaper to help prevent skin damage and promote safe sun practices.

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Area of Science:

  • Nanomedicine and Biomaterials Science
  • Photodermatology and Public Health

Background:

  • Sun exposure offers health benefits like vitamin D synthesis but poses risks such as skin cancer.
  • Rising rates of UV-related illnesses necessitate strategies for safe sun exposure management.

Purpose of the Study:

  • To engineer a wearable nanoplasmonic patch for visually detecting and alerting users to excessive sun/UV exposure.
  • To develop a low-cost, accessible tool for promoting moderate sun exposure and preventing skin damage.

Main Methods:

  • A nanoplasmonic patch was fabricated using nanopaper as the scaffold and silver nanoparticles (AgNP) as the UV-responsive agent.
  • The patch's color change upon UV exposure was evaluated, particularly its visibility on different skin types (I-VI).

Main Results:

  • The AgNP-decorated nanopaper patch exhibited visually detectable color changes in response to UV light.
  • Color change was more pronounced on lighter skin types (I-IV), indicating higher UV sensitivity.
  • The device demonstrated potential for use in low-resource settings.

Conclusions:

  • The engineered nanoplasmonic patch serves as an effective, low-cost visual indicator for safe sun exposure.
  • This wearable technology can help mitigate risks associated with excessive UV radiation, particularly for individuals with lighter skin types.