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Investigation of TiO thick films as sensing layers in conductimetric pH sensors

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Show simple item record Arshak, Khalil Gill, Edric I. Arshak, Arousian Korostynska, Olga 2011-07-01T15:53:48Z 2011-07-01T15:53:48Z 2007
dc.description peer-reviewed
dc.description.abstract Due to the increasing demand for accurate, reliable and highly sensitive pH sensors, research is ongoing to find new materials and methods to achieve this goal. An approach that shows promise in the pH-sensing field is the conductimetric pH sensor. It has the advantage of simpler construction over its potentiometric counterpart and may prove less expensive in mass production. It also meets the criteria for possible future miniaturization. This work attempts to qualify tin oxides (SnO and SnO2) as sensing materials in conductimetric interdigitated pH sensors. Both materials are tested over a range of frequencies that cover all major operating areas of the devices. Sensors are subjected to testing with pH buffers in the range pH 2–11, and all changes in their electrical parameters are recorded. It was found that SnO and SnO2 operated at low frequencies produces the best response to pH change. Tests produced a notable increase in conductance for both materials, and the magnitude of the increase in conductance is directly related to the pH of the test solution. No meaningful relationship was observed for either material at higher frequencies. en_US
dc.publisher IEEE Computer Society en_US
dc.relation.ispartofseries SAS 2007 - IEEE Sensors Applications Symposium;
dc.rights ©2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. en_US
dc.subject interdigitated electrodes en_US
dc.subject conductimetric en_US
dc.subject pH
dc.subject sensors
dc.title Investigation of TiO thick films as sensing layers in conductimetric pH sensors en_US
dc.type Conference item en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.type.restriction none en

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