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Carbon nanotube(CNT)-based fluidic systems hold a great potential for emerging medical applications such as drug delivery systems for cancer therapy. CNTs can be used to deliver anticancer drugs into a target site under a magnetic field guidance. One of the critical issues in designing such systems is how to avoid the vibration induced by the fluid flow, which is undesirable and may even promote the structural instability. The main objective of the present research is to understand the fluid structure interaction (FSI) andÌýthe associated flutter instability of a CNTÌýwhen it is inserted to human body for drug delivery andÌýcontrolled by magnetic field.ÌýÌý

-ÌýConfiguration of CNT conveying magnetic fluid embedded in biological tissue subjected to a longitudinal magnetic field.

- Example stability diagram for fluid-structure interaction with cantilevered CNTÌýunder magnetic field. It shows the critical speed (u_cr), which demonstratesÌýthe coupled effects of the magnetic field and viscoelastic parameters on it, as a function of the non-dimensional mass ratio βÌý(Ï„=0.05,ÌýKn=0.001);Ï„Ìýis a nondimensionalÌývariable given byÌýÏ„=²¹±ð₀/L where a is the internal characteristic length,Ìýe_0Ìýis the material constant, and L is the length of CNT. Kn is the Knudsen number.

This research has been conducted in collaboration with Prof. Hyock-Ju Kwon.

Related publication

• Sadeghi-Goughari, M. ., Jeon, S. ., & Kwon, H.-J. . (2020).ÌýFluid Structure Interaction of Cantilever Micro and Nanotubes Conveying Magnetic Fluid with Small Size Effects Under a Transverse Magnetic Field.ÌýJournal of Fluids and Structures,Ìý94.

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  Sadeghi-Goughari, M. ., Jeon, S. ., & Kwon, H.-J. . (2018).ÌýFlutter instability of cantilevered carbon nanotubes caused by magnetic fluid flow subjected to a longitudinal magnetic field.ÌýPhysica E: Low-Dimensional Systems and Nanostructures,Ìý98, 184-190.

• Sadeghi-Goughari, M. ., Jeon, S. ., & Kwon, H.-J. . (2017).ÌýEffects of magnetic-fluid flow on structural instability of a carbon nanotube conveying nanoflow under a longitudinal magnetic field.ÌýPhysics Letters A,Ìý381, 2898\textendash2905.