A wearable phototherapy device utilizing micro-LEDs.

Area of Science:

• Biomedical Engineering
• Materials Science
• Optoelectronics

Background:

• Phototherapy is a crucial treatment modality across various medical fields.
• Existing wearable phototherapy devices face challenges in conformability and uniform light distribution.
• Advancements in miniaturized electronics and nanomaterials offer opportunities for improved wearable therapeutic devices.

Purpose of the Study:

• To develop a conformable, wearable device for phototherapy applications.
• To achieve uniform light emission from a flexible phototherapy system.
• To demonstrate the feasibility of using micro-LEDs and nanoparticle scattering films in a wearable format.

Main Methods:

• Fabrication of a thin (1 mm) elastomeric membrane as the device substrate.
• Integration of specially designed micro-sized light-emitting diodes (LEDs) for edge-lighting.
• Incorporation of nanoparticle-based scattering films to enhance light extraction and uniformity.

Main Results:

• The developed device exhibits excellent conformability to body contours.
• A uniform light emission of 15 μW/cm² was achieved.
• The uniform emission was sustained over a treatment area of 2 cm².

Conclusions:

• The presented device represents a significant advancement in wearable phototherapy technology.
• The combination of elastomeric materials, micro-LEDs, and nanoparticle films enables effective and uniform light delivery.
• This technology holds promise for future non-invasive, patient-friendly therapeutic applications.