ERIC Number: EJ1163750
Record Type: Journal
Publication Date: 2017-Dec
Abstractor: As Provided
Fabrication of Solid-State Gas Sensors by Drawing: An Undergraduate and High School Introduction to Functional Nanomaterials and Chemical Detection
Smith, Merry K.; Martin-Peralta, Daphnie G.; Pivak, Polina A.; Mirica, Katherine A.
Journal of Chemical Education, v94 n12 p1933-1938 Dec 2017
Carbon nanomaterials have promising utility in chemical sensing including applications in preserving occupational safety, monitoring of environmental pollution, and human health. While recent advances in device fabrication and molecular design of functional materials have enabled rapid fabrication of chemical sensors from carbon nanomaterials, limited efforts have focused on translating these discoveries into undergraduate curriculum. This paper describes a safe and engaging laboratory exercise that introduces undergraduates and younger students to modern nanoscience while illustrating fundamental principles of general chemistry that include concepts of orbital hybridization, allotropes, and intermolecular interactions. Solid-state devices are prepared on shrinkable polymer film substrates equipped with hand-drawn graphite electrodes. Chemiresistive sensing materials, carbon nanotubes (CNTs) and graphite powder, are compressed into pellets and drawn directly into this device architecture to produce functional sensors capable of detecting and differentiating gases and vapors based on differences in intermolecular interactions.
Descriptors: Science Instruction, College Science, Secondary School Science, Undergraduate Study, Hands on Science, Science Laboratories, Organic Chemistry, Molecular Structure, Laboratory Equipment, Science Experiments, Laboratory Experiments
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: email@example.com; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Authoring Institution: N/A
Identifiers - Location: Vermont; New York; New Hampshire
Grant or Contract Numbers: N/A