Compact UV LED lamp with low heat emissions for biological research applications

Pirc, Matija (avtor), Caserman, Simon (avtor), Ferk, Polonca (avtor), Topič, Marko (avtor)

Much biomedical research focuses on the effects of UV light on human cells. UV light sources are a prerequisite for such research. This paper presents the design and achieved performance of a UVA (Ultraviolet A: 320–400 nm) and a UVB (Ultraviolet B: 290–320 nm) LED-based lamp suitable for use in bioassays, as well as inside an incubator. Numerical simulations were used to optimise the number, layout and output power of LEDs to achieve good irradiance homogeneity while maintaining low costs. Design was optimised for the efficient transfer of generated heat away from the irradiated samples through the heatsink at the back of the lamps. The average irradiance of the target surface by the UVA lamp was 70.1 W/m$^2$ with a maximum deviation of 4.9%, and the average irradiance by the UVB lamp was 3.1 W/m$^2$ with a maximum deviation of 4.8%. With the UVA and UVB lamps, the temperature of samples undergoing irradiation in the incubator rises from 37 to 42 °C within 40 and 67 min, respectively. This by far exceeds the required UV irradiation time in most cases. Tests on Jurkat and HEK-293 cell cultures confirmed the suitability of our lamps for biomedical research.

• Jezik: Angleški jezik
• Ključne besede: UV lamp, LED, UVA, UVB, incubator, bioassay
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FE - Fakulteta za elektrotehniko; MF - Medicinska fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2019
• Št. strani: 18 str.
• Številčenje: Vol. 8, iss. 3, art. 343
• PID: 20.500.12556/RUL-107466
• UDK: 621.383.51
• ISSN pri članku: 2079-9292
• DOI: 10.3390/electronics8030343
• COBISS.SI-ID: 12414804
• Datum objave v RUL: 17.04.2019

Gradivo je del revije

• Naslov: Electronics
• Skrajšan naslov: Electronics
• Založnik: MDPI
• ISSN: 2079-9292
• COBISS.SI-ID: 523068953

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 21.03.2019

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: UV svetilka, svetleče diode, UVB, inkubator, biološki testi

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0197
• Naslov: Fotovoltaika in elektronika