Oled-based thin film surfaces for rapid acrylamide detection
An OLED-based analytical platform for detecting acrylamide, a food carcinogen, using thin film surface engineering. The technology targets low-cost (<$10/test), rapid (<15 min) detection with high accuracy (0.5 ppb), suitable for food safety applications and integration with laboratory information management systems.
Overview
This research proposes an OLED-based thin film sensing platform designed for the rapid detection of acrylamide, a known food carcinogen. The approach leverages the interaction between acrylamide and the metallic cathode of an organic light-emitting diode (OLED), where the presence of acrylamide modulates the intensity of emitted light. A photodiode converts this optical signal into an electrical signal that can be read via an oscilloscope, enabling quantitative measurement. The platform targets key performance criteria for practical food safety monitoring, including a low limit of quantification, minimal cost per test (under $10), rapid analysis time (15 minutes or less), and accuracy of 0.5 ppb. Additional design goals include compatibility with laboratory information management systems, in-line measurement capability, adherence to green chemistry principles, and ease of use by plant personnel.
Technical specifications
- Sensing mechanism: Acrylamide interacts with the metallic cathode of an OLED, altering the electrostatic forces between electrons and holes and resulting in observable changes in emitted light intensity.
- Signal transduction: A photodiode converts the modulated visible light into an electrical signal readable by an oscilloscope.
- OLED advantages: High fluorescent efficiency across the visible spectrum, color versatility, high brightness, wide angular emission profile, and lightweight construction make OLEDs well suited for chemical, biochemical, and gas sensing.
- Thin film architecture: Multilayer organic thin films stacked to form the OLED device structure.
- Target performance: Limit of quantification at 0.5 ppb accuracy, analysis cost under $10 per test, and results within 15 minutes.
- Integration features: Designed for potential integration with laboratory information management systems and in-line measurement workflows.
Technology readiness level
This technology is at an early research stage. Planned validation activities include fabricating the OLED multilayer structure, assembling the OLED device, investigating the interaction between food carcinogens and OLED-based thin films, and performing real sample analysis. The estimated timeline for completing these objectives is six months to one year. The current proposal represents foundational research toward demonstrating the sensing principle before advancing to prototype development and field validation.
About University of Malaya
University of Malaya is Malaysia’s oldest comprehensive public research university with broad disciplinary depth and a strong national role. Its Kuala Lumpur campus places corporate partners minutes from regional headquarters and supply‑chain nodes, while specialized labs and shared core facilities support contract R&D, testing, and validation. Integration with an on‑campus teaching hospital enables clinical studies and translational work, and industry liaison and professional education groups streamline access to talent and upskilling. Research is supported by competitive funding from Malaysian government agencies and international sponsors, complemented by direct industry collaborations. A dedicated technology transfer office manages IP, licensing, and startup formation with clear pathways for rapid engagement.
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