Fabrication of a Microneedle/CNT Hierarchical Micro/Nano Surface Electrochemical Sensor and its In-Vitro Glucose Sensing Characterization

dc.contributor.ISNI0000 0001 3865 4673 (Lee, GS)
dc.contributor.authorYoon, Youngsamen_US
dc.contributor.authorLee, Gil Siken_US
dc.contributor.authorYoo, Koangkien_US
dc.contributor.authorLee, Jeong-Bongen_US
dc.date.accessioned2014-08-29T21:36:55Z
dc.date.available2014-08-29T21:36:55Z
dc.date.created2013-12-04
dc.description.abstractWe report fabrication of a microneedle-based three-electrode integrated electrochemical sensor and in-vitro characterization of this sensor for glucose sensing applications. A piece of silicon was sequentially dry and wet etched to form a 15 x 15 array of tall (approximately 380 μm) sharp silicon microneedles. Iron catalyst was deposited through a SU-8 shadow mask to form the working electrode and counter electrode. A multi-walled carbon nanotube forest was grown directly on the silicon microneedle array and platinum nano-particles were electrodeposited. Silver was deposited on the Si microneedle array through another shadow mask and chlorinated to form a Ag/AgCl reference electrode. The 3-electrode electrochemical sensor was tested for various glucose concentrations in the range of 3~20 mM in 0.01 M phosphate buffered saline (PBS) solution. The sensor's amperometric response to the glucose concentration is linear and its sensitivity was found to be 17.73 ± 3 μA/mM-cm². This microneedle-based sensor has a potential to be used for painless diabetes testing applications.;en_US
dc.identifier.bibliographicCitationYoon, Youngsam, Gil S. Lee, Koangki Yoo, and Jeong-Bong Lee. 2013. "Fabrication of a microneedle/CNT hierarchical micro/nano surface electrochemical sensor and its in-vitro glucose sensing characterization." 13(12): 16672-16681.
dc.identifier.issn1424-8220en_US
dc.identifier.issue12en_US
dc.identifier.startpage16672en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/3946
dc.identifier.volume13en_US
dc.relation.urihttp://dx.doi.org/10.3390/s131216672en_US
dc.rightsCC BY 3.0 (Attribution)en_US
dc.rights©2013 The Authorsen_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en_US
dc.source.journalSensors (Basel, Switzerland)en_US
dc.subjectMicroneedlesen_US
dc.subjectGlucose sensingen_US
dc.subjectNanoparticlesen_US
dc.subjectDiabetesen_US
dc.titleFabrication of a Microneedle/CNT Hierarchical Micro/Nano Surface Electrochemical Sensor and its In-Vitro Glucose Sensing Characterizationen_US
dc.type.genrearticleen_US

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