New Generation Optoelectronic Devices for Medical Applications

Yuanzhe Li, Xie He, Shirong Qiu, Ni Zhao

 Department of Electronic Engineering, The Chinese University of Hong Kong (nzhao@ee.cuhk.edu.hk)

Abstract

The increasing global demand on personalized healthcare technologies calls for a new generation of wearable sensors that are high-performance, low-cost, and compatible with arbitrary platforms including human organs. Low-temperature processed hybrid and nanostructured materials are an enabler of such devices because they can be directly patterned to various 2D and 3D substrates through low-cost printing processes and their electronic and mechanical properties can be easily tuned through composition or morphology tuning. In this talk, I will describe how this class of materials enables novel wearable medical devices with unprecedented performances. In particular, I will focus on the design of flexible optical devices for noninvasive physiological measurements. Firstly, I will introduce the development of high-sensitivity optical probes for continuous tracking of heart rate variability, arterial blood pressure and cerebral oxygenation. Secondly, I will talk about the design of single-point spectrometer for hyperspectral imaging. Finally, I will introduce a new physiological model that can be universally applied to wearable sensors to enable dynamic tracking of arterial stiffness and blood pressure.