Effect of Ambient Humidity on the Transmission of UV/Visible Light through Model Human Epidermis
| Autor: | Anup Sharma, Carlton Farley, Aschalew Kassu, Sandra Sadate |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Epidermis (botany) business.industry food and beverages 01 natural sciences humanities law.invention 010309 optics 03 medical and health sciences Wavelength 0302 clinical medicine Transmission (telecommunications) 030202 anesthesiology law Ambient humidity 0103 physical sciences Optoelectronics business Visible spectrum Light-emitting diode |
| Zdroj: | Open Journal of Applied Sciences. :153-157 |
| ISSN: | 2165-3925 2165-3917 |
| Popis: | Transmission of light through model human epidermal samples is investigated at four different wavelengths and at varying ambient humidity. Light from light emitting diodes (LEDs) is used for transmission measurements through the samples at a UVA wavelength of 365 nm, and visible wavelengths of 460 nm, 500 nm, and 595 nm. Ambient air-humidity is varied between 20% and 100%. Results show that for high ambient humidity, near 100%, transmission of light through the epidermis is higher than at low ambient humidity, 60% or lower. These results are explained with a simple model of epidermis as a turbid medium and the effect of adsorbed water in reducing light-scattering by refractive-index-matching. Biological implications of increased light-transmission through epidermis at high ambient humidity are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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