Development of MWCNT/SU-8 nanofiber composite using electrospinning technique for biosensing applications

M, Durga Prakash and Vanjari, Siva Rama Krishna and Dutta, Asudeb and Challa, Subrahmanya Sastry and Singh, Shiv Govind (2014) Development of MWCNT/SU-8 nanofiber composite using electrospinning technique for biosensing applications. In: SENSORS, 2014 IEEE, 2-5 Nov, 2014, Valencia.

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Abstract

This paper reports the synthesis and characterization of Multiwall Carbon nanotube (MWCNTs) embedded SU-8 negative photoresist nanofibers. These nanofiber composites were synthesized using electrospinning technique, a simple, robust and low cost technique for synthesizing nanofibers. MWCNTs were dispersed mechanically in SU-8 by high shear mixing using an ultrasonic homogenizer device. The mixture was then electrospun onto a pre-fabricated copper electrodes array on silicon substrate. The parameters of electrospinning are optimized to precisely position nanofibers in between two electrodes of the array. The electrical and morphological analyses of the electrospun MWCNTs embedded SU-8 nanofibers were carried out by current voltage measurements (I-V), scanning electron microscopy (SEM) method respectively. Also interaction between MWCNTs and SU-8 in the electrospun nanofibers was studied by XRD spectra and Raman spectra analysis. The maximum conductivity is achieved at 11% loading of carbon nanotubes and is suitable for conductometric based biosensors.

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IITH Creators:

IITH Creators	ORCiD
Vanjari, Siva Rama Krishna	UNSPECIFIED
Dutta, Asudeb	UNSPECIFIED
Challa, Subrahmanya Sastry	UNSPECIFIED
Singh, Shiv Govind	http://orcid.org/0000-0001-7319-879X