Format

Send to

Choose Destination
ACS Nano. 2018 Sep 25;12(9):9587-9595. doi: 10.1021/acsnano.8b05568. Epub 2018 Aug 22.

Trichogenic Photostimulation Using Monolithic Flexible Vertical AlGaInP Light-Emitting Diodes.

Author information

1
Department of Materials Science and Engineering , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea.
2
Department of Biological Sciences , Korea Advanced Institute of Science and Technology (KAIST) , 291 Daehak-ro , Yuseong-gu, Daejeon 34141 , Republic of Korea.
3
Department of Dermatology and Cutaneous Biology Research Institute , Severance Hospital Yonsei University College of Medicine , 50-1 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Republic of Korea.
4
Wellman Center for Photomedicine , Harvard Medical School and Massachusetts General Hospital , 65 Landsdowne Street Up-5 , Cambridge , Massachusetts 02139 , United States.

Abstract

Alopecia is considered an aesthetic, psychological, and social issue among modern people. Although laser-induced skin stimulation is utilized for depilation treatment, such treatment has significant drawbacks of high energy consumption, huge equipment size, and limited usage in daily life. Here, we present a wearable photostimulator for hair-growth applications using high-performance flexible red vertical light-emitting diodes (f-VLEDs). Flexible microscale LEDs were effectively fabricated by a simple monolithic fabrication process, resulting in high light output (∼30 mW mm-2), low forward voltage (∼2.8 V), and excellent flexibility for wearable biostimulation. Finally, trichogenic stimulation of a hairless mouse was achieved using high-performance red f-VLEDs with high thermal stability, device uniformity, and mechanical durability.

KEYWORDS:

bioelectronics; flexible vertical LED; hair growth; microLED; phototherapy; red LED

PMID:
30125485
DOI:
10.1021/acsnano.8b05568

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center