June 23, 2013
June 23, 2013
June 26, 2013
K-12 & Pre-College Engineering
23.1039.1 - 23.1039.5
Research Experience for K-12 STEM Teachers : Charecterization of Electrospun Carbon Nanofibers (ECNF)AbstractA group of three teachers are recruited through the NSF funded Research Experiences forTeachers. The group has investigated the charecteristics of Electrospun Carbon Nanofibers(ECNFs) for biosensing applications. The research project is an exciting topic for teachingconcepts of mathematics, science, and technology in middle and high schools. The teachers havelearned about the engineering design concepts of carbon nanofiber (CNF) based biosensorsthrough active participation in the engineering research labs. Based on the resecrh results theteachers develop lecture modules which they implement in their classes in the following schoolyear. This project consists of two parts – 1) To study the characteristics of ECNF in varioussolutions and 2) To develop a prototype of ECNF based glucose biosensor. All five dry ECNFsamples are found to be ohmic and exhibit linear behavior within the range -2.226 V to 2.992 Vand the operating frequency is within the range of 13 Hz to 850 kHz. Loose ECNF are added toan aqueous bienzyme solution to evaluate its effectiveness as part of a glucose detector. As theECNF samples’ length increase and their cross-sectional area remain constant, it is predicted thattheir resistance increases and thus lower their output current. Data beyond this range behaved ina nonlinear manner. In addition, this study shows that ECNF does allow glucose to be detected.Its lower cost makes it a more economical choice over vertically aligned carbon nanofibers(VACNFs).Carbon nanofiber is one of the potential candidates for biosensors, specifically to detect glucose,an important biosignatures to diagnose diabetes. The use of this type of biosensor in othermedical applications such as in detecting other maladies would greatly benefit the generalpopulation. Through this participation the teachers have enhanced their knowledge inengineering and develpoed the skills to translate this into their classroom practices, thusimpacting their students and motivating them towards science, technology, and engineeringdisciplines. References :  Willner and B. Willner, “Biomolecule-Based Nanomaterials and Nanostructures”, Nano Lett., vol. 10, pp.3805–3815, 2010.  B. Islam et al., “A Mediator Free Amperometric Bienzymatic Glucose Biosensor Using Vertically Aligned Carbon Nanoﬁbers (VACNFs)”, IEEE Sensors Journal, vol. 11, pp. 2798-2804, 2011  D.A. Skoog et al., Principles of Instrumental Analysis, Saunders College Publishing, 849 p., 1998.
Huq, H., & Ben Ghalia, M. (2013, June), Research Experience for K-12 STEM Teachers : Charecterization of Electrospun Carbon Nanofibers (ECNF) Paper presented at 2013 ASEE Annual Conference & Exposition, Atlanta, Georgia. https://peer.asee.org/22424
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