Characterization and Electrochemical Analysis of Microelectrodes and the Interface with a Fabricated 3D-Printed Microfluidic Chip in an Upper-Division Analytical Course

Autor/inn/en	DeLeon, Chelsea; Tabibi, Tara; Alagic, Asmira
Titel	Characterization and Electrochemical Analysis of Microelectrodes and the Interface with a Fabricated 3D-Printed Microfluidic Chip in an Upper-Division Analytical Course
Quelle	In: Journal of Chemical Education, 97 (2020) 12, S.4453-4461 (9 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Alagic, Asmira)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
Schlagwörter	Science Instruction; Chemistry; Science Laboratories; Laboratory Equipment; Printing; Design; Scientific Concepts; Concept Formation; College Science; Undergraduate Study; Hands on Science + Suchen Sie Ihr Suchwort? Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Chemie; Laborausstattung; Buchdruck; Drucken; Concept learning; Begriffsbildung; Grundstudium
Abstract	This work explores the interface between 3D-printing, material sciences, and microfluidics with electrochemical detection in an undergraduate laboratory. This work includes a module for the characterization and electrochemical analysis of microelectrodes that spans 4 weeks (3 h per week). Laboratory exercises include the fabrication of a 3D-printed device, examination of 3D-printing techniques, scanning electron microscopy (SEM), and electrochemistry. This interdisciplinary curricula exposed students to the process of designing a functioning microfluidic device. Students began by designing the microfluidic chip with AutoDesk Inventor. To gain a better understanding of the microelectrodes utilized in a microfluidic system, students explored the surfaces of various microelectrodes with SEM. On the basis of the visualization of the microelectrodes with SEM, students formed a hypothesis on the impact of electrode surface area on the sensitivity and limit of detection. Cyclic voltammetry in a classical three-electrode system was used to experimentally examine the relationship between electrode surface area and sensitivity. The module concluded with the use of the fabricated 3D-printed chip and amperometry to develop a calibration curve and determination of an unknown concentration of analyte. This work highlights the integration of 3D-printing, SEM, microfluidics, and electrochemistry into the upper-level undergraduate curriculum. (As Provided).
Anmerkungen	Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01