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ศ.ดร.อรวรรณ ชัยลภากุล

Due to the recent growing in the demands on food, environmental and clinical monitoring approaches, numerous sensors have been continuously developed. Our research has predominantly focused on the development of electrochemical and optical sensors employing a novel nano-based material. These developed sensors are an alternative attractive analytical device for various practical applications due to its several advantages including simplicity, portability, disposability and inexpensiveness. Herein, the presentation will be discussed on our previous and present researches interests including the development of polymer- and paper-based sensors. First, our group has aimed at the development of new materials on polymer-based sensor for enhancing the detection sensitivity of electrochemical sensors. These novel materials include graphene (G), carbon nanotubes (CNTs), and metal nanoparticles (MNPs. Our research group are also interested in the novel detection platform called “paper-based analytical device (PAD)”. PADs were successfully utilized to create a low-cost, portable, and disposable platform for both electrochemical and colorimetric sensors. The flow in PADs can be generated via capillary forces, precluding the need for mechanical or electrical pumps. These advantages make the PADs attractive as a new tool for analytical automation. General paper-based sensors are focused on microfluidic delivery of a solution to the detection site whereas more advanced complex 3-D designs can also be operated by using the same microfluidic principles. Furthermore, the assay on PADs can integrate both detection techniques (electrochemical and colorimetric detections) into a single device for simultaneous detection of heavy metals. Based on this research, our group has opened the doors for a portable analytical device that is suitable for various field analysis. Moreover, these introduced sensors can possibly be developed to be employed as a new automatic platform for screening and determining of various predictors such as health status, disease development, food quality control, and environmental monitoring. These approaches might be the alternative sensing devices for a health care testing of end users in the near future.

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