Pinhole microLED Array as Point Source Illumination for Miniaturized Lensless Cell Monitoring Systems

Proceedings

Syamsu, Iqbal¹  Scholz, Gregor²  Mariana, Shinta³  Dharmawan, Agus Budi⁴  Prades, Joan Daniel⁵  Yu, Feng⁶ 

[1] Authors to whom correspondence should be addressed.;Faculty of Information Technology, Universitas Tarumanagara, 11440 Jakarta, Indonesia;Institute of Semiconductor Technology (IHT) and Laboratory for Emerging Nanometrology (LENA), Technische Universität Braunschweig, 38106 Braunschweig, Germany;MIND, Department of Electronic and Biomedical Engineering, Universitat de Barcelona, 08028 Barcelona, Spain;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018;Research Center for Electronics and Telecommunication, Indonesian Institute of Sciences (LIPI), 40135 Bandung, Indonesia

关键词: microLED;    pinhole;    point light source;    cell monitoring;    compact lensless holographic microscope;    microfabrication;    cell imaging;   

DOI  :  10.3390/proceedings2130866

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Pinhole‐shaped light‐emitting diode (LED) arrays with dimension ranging from 100 μm down to 5 μm have been developed as point illumination sources. The proposed microLED arrays, which are based on gallium nitride (GaN) technology and emitting in the blue spectral region (λ = 465 nm), are integrated into a compact lensless holographic microscope for a non‐invasive, label‐free cell sensing and imaging. From the experimental results using single pinhole LEDs having a diameter of 90 μm, the reconstructed images display better resolution and enhanced image quality compared to those captured using a commercial surface‐mount device (SMD)‐based LED.

【 授权许可】

CC BY