A rapid-­‐response carbon dioxide sensor Exis/ng carbon dioxide (CO2) monitors are bulky, slow, and prone to error. Building on recent advances with graphene in materials and device engineering, this project aims to research and develop a reliable carbon dioxide sensor with rapid response to overcome deficiencies in current infrared detectors. The integra/on of our device with op/cal fibre network affords the capability to map the instantaneous concentra/on gradient of CO2 in a small and collapsible space without dangerous delay. This technology has been suggested to have applica/ons in endotracheal intuba/on and may also be used as laboratory experimental instrument and in mining and aerospace industries. Technology Applica/ons Schema/c of process to develop the fibre-­‐type CO2 detector; (a) graphene-­‐based FET for mid-­‐IR detector; (b) graphene-­‐based FET on fibre; (c) fibre-­‐type CO2 detector; (d) 3D network detector system. Advantages Building on recent advances with graphene in materials and device engineering, we will develop a mid-­‐
IR photoelectric detector to overcome deficiencies in current IR detectors. We will use theory, numerical methods, and experimental work to improve the coupling between op/cal fibre and a distributed microdetector array for in-­‐vivo tes/ng of CO2 gradients. An automated tracheal CO2 detector Opportuni/es for Collabora/on 1.  Large area, high quality graphene films synthesis techniques: CVD & low-­‐temperature PECVD methods. 2.  Graphene transfer technologies. Such a smart, ultra-­‐fast, highly sensi/ve, and long-­‐term stability carbon dioxide monitor system developed in this project will have applica/on in medicine, health, and environment, as well as bring health, economic, scien/fic, social, and educa/onal benefits. 3.  Innova/ve fabrica/on technologies of graphene-­‐based photodetector. 4.  Innova/ve fabrica/on technologies of microscale, flexible, fibre-­‐type photodetector and CO2 detector. 5.  Innova/ve fabrica/on technologies of auto-­‐integrated system for tracheal intuba/on. IP & Key Publica/ons §
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H. Qiao, Q. Bao* et al. Broadband Photodetectors Based on Graphene-­‐Bi2Te3 Heterostructure. ACS Nano, 2015, 9(2): 1886. C. Chen, Q. Bao* et al. Highly Responsive MoS2 Photodetectors Enhanced by Graphene Quantum Dots. Scien,fic Reports, 2015, 5: 11830. Y. Wang, Q. Bao* et al. Hybrid Graphene-­‐Perovskite Phototransistors with Ultrahigh Responsivity and Gain. Advanced Op,cal Materials, 2015, DOI: 10.1002/
adom.201500150. Q. Bao, K. P. Loh. Graphene Photonics, Plasmonics, and Broadband Optoelectronic Devices. ACS Nano, invited review, 2012, 6(5): 3677. Key Contact Dr. Qiaoliang Bao Senior Lecturer, Department of Materials Science & Engineering Phone: +613 9905 4927 Email: qiaoliang.bao@monash.edu