Thermal and optical performance of eco-friendly silk fibroin proteins as a cavity encapsulation over LED systems

Name: Thermal and optical performance of eco-friendly silk fibroin proteins as a cavity encapsulation over LED systems
Author: Yuruker, Sevket Umut, Arık, Mehmet, Tamdoğan, Enes, Melikov, R., Nizamoğlu, Sedat, Press, D. A., Durak, Ilkem

İsim	Thermal and optical performance of eco-friendly silk fibroin proteins as a cavity encapsulation over LED systems
Yazar	Yuruker, Sevket Umut, Arık, Mehmet, Tamdoğan, Enes, Melikov, R., Nizamoğlu, Sedat, Press, D. A., Durak, Ilkem
Basım Tarihi:	2015
Basım Yeri	- ASME
Konu	Cavities, Proteins
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	978-0-7918-5690-1
Kayıt Numarası	4062e923-7d2a-4791-8ac5-cab15a96582a
Lokasyon	Mechanical Engineering
Tarih	2015
Örnek Metin	The demand for high power LEDs for illumination applications is increasing. LED package encapsulation is one of most critical materials that affect the optical path of the generated light by LEDs, and may result in lumen degradation. A typical encapsulation material is a mixture of phosphor and a polymer based binder such as silicone. After LED chips are placed at the base of a cavity, phosphor particles are mixed with silicone and carefully placed into the cavity. One of the important technical challenges is to ensure a better thermal conductivity than 0.2 W/m-K of current materials for most of the traditional polymers in SSL applications. In this study, we investigated an unconventional material of the silk fibroin proteins for LED applications, and showed that this biomaterial provides thermal advantages leading to an order of magnitude higher thermal performance than conventional silicones. Silk fibroin is a natural protein and directly extracted from silk cocoons produced by Bombyx mori silkworm. Therefore, it presents a “green” material for photonic applications with its superior properties of biocompatibility and high optical transparency with a minimal absorption. Combining these properties with high thermal performance makes this biomaterial promising for future LED applications. An experimental and computational study to understand the optical and thermal performance is performed. A computational fluid dynamics study with a commercial CFD software was performed and an experimental set-up was developed to validate the computational findings to determine the thermal conductivity of the proposed material.
DOI	10.1115/IPACK2015-48326
Cilt	3

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Thermal and optical performance of eco-friendly silk fibroin proteins as a cavity encapsulation over LED systems

Yazar Yuruker, Sevket Umut, Arık, Mehmet, Tamdoğan, Enes, Melikov, R., Nizamoğlu, Sedat, Press, D. A., Durak, Ilkem

Basım Tarihi 2015

Basım Yeri - ASME

Konu Cavities, Proteins

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 978-0-7918-5690-1

Kayıt Numarası 4062e923-7d2a-4791-8ac5-cab15a96582a

Lokasyon Mechanical Engineering

Tarih 2015

Örnek Metin The demand for high power LEDs for illumination applications is increasing. LED package encapsulation is one of most critical materials that affect the optical path of the generated light by LEDs, and may result in lumen degradation. A typical encapsulation material is a mixture of phosphor and a polymer based binder such as silicone. After LED chips are placed at the base of a cavity, phosphor particles are mixed with silicone and carefully placed into the cavity. One of the important technical challenges is to ensure a better thermal conductivity than 0.2 W/m-K of current materials for most of the traditional polymers in SSL applications. In this study, we investigated an unconventional material of the silk fibroin proteins for LED applications, and showed that this biomaterial provides thermal advantages leading to an order of magnitude higher thermal performance than conventional silicones. Silk fibroin is a natural protein and directly extracted from silk cocoons produced by Bombyx mori silkworm. Therefore, it presents a “green” material for photonic applications with its superior properties of biocompatibility and high optical transparency with a minimal absorption. Combining these properties with high thermal performance makes this biomaterial promising for future LED applications. An experimental and computational study to understand the optical and thermal performance is performed. A computational fluid dynamics study with a commercial CFD software was performed and an experimental set-up was developed to validate the computational findings to determine the thermal conductivity of the proposed material.

DOI 10.1115/IPACK2015-48326

Cilt 3