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Diana Aznakayeva: Graphene Nanosensor Construction for Environmental and Biological Application

posted 4 Jul 2016, 05:56 by info admin
Diana Aznakayeva, Emir Aznakayev, Igor Yakovenko
School of Physics and Astronomy, University of Manchester, Manchester, M1 3OJ, UK; 
Electronics Department, National Aviation University, Kiev, 03058, Ukraine

The paper addresses the processes of acoustic waves detection through graphene nanosensor [1]. The scheme of passive acoustic nanosensor devise based on graphene has been proposed. Performed numerical simulation reveals the change in the geometry of graphene nanosensor device under the influence of acoustic pressure [2] of different magnitudes for determination spatial position of an object. Functioning organs of living body and the flow of blood in them produce characteristic acoustic image being distorted by their dysfunctions. Determination of spatial position of sources of such disturbances allows nanorobots to be spatially localized and influence them with high precision. In addition, passive acoustic radars with macroscopic sizes can be formed as well from the nanosensors array without any special rotational mechanism. Acoustic pressure is the local pressure deviation from the ambient (equilibrium) atmospheric pressure caused by a sound wave. 
Light intensity incident on the surface of graphene nanosensor couple to the intensity of acoustic wave source and with the distance to the objects. Hence, by measuring the intensity or pressure exerted by acoustic wave on graphene nanosensor surface and determining the intensity of acoustic wave source it is possible to pinpoint the distance to the detected object. If measure acoustic pressure exerted on surface of graphene  nanosensor by the object at the different moment of time, we can define displacement of object.

[1] A. K. Geim and K. S. Novoselov, “The rise of graphene”, Nature Materials, 6, pp. 183 – 191, 2007
[2] D.R. Raichel. The Science and Applications of Acoustics. Springer, New York, 2006

Diana Aznakayeva is currently an 4th year post-graduate student at the Manchester University, UK. She is primarily interested in the photonics and electrical and optical properties of atomically thin materials such as graphene. She received her B.S. (2010) and M.S. (2012) degrees in Physics from the National Aviation University (Kiev, Ukraine) where she studied the electrical, optical and mechanical properties of carbon nanomaterials. After finishing her M.S.program, she spent 1 year as researcher at the National Aviation University and from 2014 she is a post-graduate student at the Manchester University. From 2004 to 2013 she provided the scientific research also in the Institute of Biochemistry, Institute of Physics and Institute of Physics of Metals in nanoscience, optics and electronic properties of nanomaterials. She has more than 50 papers and 1 book. She has different National and International awards for her research.