Graphene-Based Nanotube Biosensor Could Detect Single Biomolecules Efficiently

Graphene-Based Nanotube Biosensor Could Detect Single Biomolecules Efficiently - Featured Graphene Medical
Edward Honein holding a microfluidic nanotube biosensor. © Alain Herzog/EPFL


Edward Honein has joined the Laboratory of Nanobiotechnology at EPFL from the American University of Beirut. Under the guidance of Professor Ardemis Boghossian, Honein’s summer project aims to develop a nanotube-based biosensor.

Biosensors are devices that can detect biological molecules (“analytes”) in blood, air or water. They are increasingly being used in the fields of biological , diagnostics, drug development and even security. In spite of ongoing advancements, there is still a demand for enhanced portable bio sensing devices that are convenient to use for Doctors as well as patients. The development of such devices would provide methods for continuous, real-time monitoring of biomarker levels, which is essential for a number of diseases such as diabetes.

Edward Honein’s summer project plays a major role exactly in this situation: He is specifically designing an optical, microfluidic biosensor that can detect single biomolecules in a scalable, high-throughput method.

The biosensor itself is made up of carbon nano tubes, which are rolled-up sheets of . Nanotubes have lengths up to several centimeters and diameters as small as 1 nanometer. Their unique physical properties have paved the way for a whole new world of technologies. One of these properties is emitting light in the near-infrared spectrum (700 to 2500 nm wavelength) when excited with a laser.


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Source: AZO NANO