{"id":{"repo_id":"washington","oai_identifier":"oai:digital.lib.washington.edu:1773/44384"},"canonical_url":"https://search.dev.ndltd.org/etd/washington/oai:digital.lib.washington.edu:1773/44384","repository":{"repo_id":"washington","name":"University of Washington","base_url":"https://digital.lib.washington.edu/server/oai/request"},"display":{"title":"Carbon Nanotube-Based Wearable Sweat Sensors; Design and Fabrication","abstract":"Wearable sweat sensors enable non-invasive diagnosis of various diseases and real-time health monitoring. Few sensors exhibit pH measurement on skin due to interference by sodium chloride ions. This thesis presents a multiplexing wearable sweat sensor using single and multi-walled carbon nanotubes. The wearable device houses pH, humidity, temperature and sodium chloride sensors. The potential change of a pH sensor is calibrated by measuring sodium chloride ion concentration with resistance. Each sensor’s response is studied in terms of resistance or potential change. Sensor accuracy, sensitivity and usability is tested through a simulated sweat experiment, where the sensing parameters are measured in real-time. This multiplexing sweat sensor provides an accurate, low-cost, integrated platform to monitor multiple physiological parameters in sweat.","abstract_html":"Wearable sweat sensors enable non-invasive diagnosis of various diseases and real-time health monitoring. Few sensors exhibit pH measurement on skin due to interference by sodium chloride ions. This thesis presents a multiplexing wearable sweat sensor using single and multi-walled carbon nanotubes. The wearable device houses pH, humidity, temperature and sodium chloride sensors. The potential change of a pH sensor is calibrated by measuring sodium chloride ion concentration with resistance. Each sensor’s response is studied in terms of resistance or potential change. Sensor accuracy, sensitivity and usability is tested through a simulated sweat experiment, where the sensing parameters are measured in real-time. 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