- Available Technologies
This wave-guide biosensor comprised of a multilayer porous silicon (pSi) nanomaterial near 100% (unity) confinement of light using a simple inverse processing technique for high performance, low cost porous silicon photonics. The global market for biosensors is projected to reach $20.7 billion USD by 2020, driven by the emergence of new technologies, the growing need to manage health issues such as diabetes, and robust demand from new application areas. Hence, there is a continued need for the development of high performance sensors, featuring improved optical interaction (higher sensitivity and lower LOD), and low cost. Clemson University researchers have developed a multilayer porous silicone (pSi) wave-guide sensor using a low-cost fabrication approach to achieve a high sensitivity, low limit of detection (LOD) and near unity confinement of light.
Advanced Materials; Medical Diagnostics
This pSi waveguide technology supports high surface adlayer sensitivity, 100x greater than conventional silicon waveguides, which are typically on the order of ~1% to ~5% within certain active sensing regions. The pSi is an effective biosensing platform, capable of achieving a high sensitivity and low limit of detection (LOD) in a variety of optical configurations spanning thin films, multilayers, and waveguides. It offers the prospect of achieving the smallest device size (highest density) combined with an ultra-sensitive and fast response owing to the shallow sub-surface dimension of the core sensing region. Fabrication of the device is enabled by a simple yet unique inverse processing technique, which offers the potential to reach revolutionary device performance per unit cost, impacting disciplines such as data communications (i.e. $/Gbps/W) and medical diagnostics ($/limit of detection LOD).
Proof of Concept
Issued U.S. Patent - 11,275,031
Dr. Judson Ryckman, Gabriel D. Allen, William F. Delaney
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