Gözen Köklü

Thesis Title: Design and Implementation of CMOS Image Sensors for Biomedical Applications

Year: 2014

Designing a CMOS Image Sensor for Nutrition Analysis

Gözen Köklü, PhD Student, EPFL-IC-LSI
Sandro Carrara
Lecturer and Senior Scientist, EPFL-IC-LSI

CMOS image sensor, imager, camera, lab-on-chip (LOC), system on chip (SOC), nutrition analysis, toll-like receptors, surface receptors

The NutriChip project aims to develop a platform for testing the impact of dairy food digestion on the human health. This platform includes an artificial gastro intestinal tract that mimics the human gastro-intestinal tract,  a controller unit, a high resolution and high Signal to Noise Ratio, CMOS image sensor and an image processing unit for the acquired images.





In this research, we work on methods and architectures to create a new family of high-sensitivity, low-noise CMOS imagers compatible with the requirements of the NutriChip project.

CMOS image sensors have been chosen for the benefit of this project due to their inherent advantages i.e low power consumption, high integration and low cost compared to Charge Coupled Devices (CCDs) which make them better candidates for Lab on a Chip Platforms.

The CMOS imager consisting of several blocks as vertical access circuitry, array of pixels, horizontal access circuitry and analog to digital converter are basically shown in the figure below.


[1] Gözen Köklü, Yusuf Leblebici, and Sandro Carrara. A Switched Capacitor Fully Differential Correlated Double Sampling Circuit for CMOS Image Sensors. In Proceedings of the 5th International Symposium on Medical Information and Communication Technology, pages 113-116, Montreux, Switzerland, March 27-30, 2011.
[2] Mehmet Kaynak, Mehmet Uzunkol, Gözen Köklü, Ibrahim Tekin and Yasar Gürbüz,  Realization of a Single and Multi-Power Amplifier Using IHP 0.25 um SiGe HBT Technology. TARGET DAYS, Rome – Italy, 2007.