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Graphene Foam Detects Hazardous Gases

Fazel Yavari, a mechanical engineering student at Rensselaer Polytechnic Institute, has developed a new sensor to detect extremely small quantities of hazardous gases such as ammonia and nitrogen dioxide. Made from a 3D foam of graphene - the world's thinnest material - this sensor is durable, inexpensive to make, and opens the door to a new generation of gas detectors. Yavari's sensor is ideal for use by bomb squads, defense, and law enforcement officials, and has applications in environmental monitoring.

Topics:
Defense Detectors Environmental Monitoring Green Design & Manufacturing Materials Nanotechnology Sensors

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    Transcript

    00:00:00 my name is Fel Yari my major is mechanical engineering and I am from esphahan Iran my project is using graphine form to detect low traces of dangerous Gases such as ammonia and nitrogen dioxide sensitively and cheaply this material is called graphine foam which is graphine sheets that are grown on a template the advantage of this sensor is that graphine sheets in the

    00:00:27 foam are Exposed on both sides to the gases that increases the sensitivity of the device it is a macroscale structure and it is scalable and easy to fabricate sensors with we estimate that the cost of this sensor would be 5 to 10 times cheaper than uh commercial sensors that are available in the market ammonia and nitrogen dioxide sensors have a lot of applications in nox reduction emission

    00:00:55 of hazardous gases from combustion processes and it also has a lot of applications in environmental monitoring and also for public security because of the recent regulations on NO2 or nox reduction and there has been a huge demand for nox sensors it is forecasted that by 2017 177 million gas sensors will be required every year after this work was published

    00:01:29 we have received cont context from industry to apply this technology I have been always interested in cutting technology and more specifically uh Nano structured materials and nano technology and when I joined RPI I realized that Professor katar's group works on Nano structures and uh it is a very application based lab and he always acknowledges Innovation whenever you

    00:01:55 come up with a new idea in the future I would like to carry on doing research and solving real world problems either in an academic setting or in an industrial setting where I get challenged every day