Needle-type dissolved oxygen microelectrode array sensors for in situ measurements
Dissolved oxygen is a critical indicator in a variety of biomedical and environmental processes. This work describes the development of a new needle-type microelectrode array (MEA) sensor for in situ measurements of dissolved oxygen (DO) using microfabrication technologies. A dynamic etching techniq...
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| Veröffentlicht in: | Sensors and actuators. B, Chemical Chemical, 2007-12, Vol.128 (1), p.179-185 |
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| container_title | Sensors and actuators. B, Chemical |
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| creator | Lee, Jin-Hwan Lim, Tae-Sun Seo, Youngwoo Bishop, Paul L. Papautsky, Ian |
| description | Dissolved oxygen is a critical indicator in a variety of biomedical and environmental processes. This work describes the development of a new needle-type microelectrode array (MEA) sensor for
in situ measurements of dissolved oxygen (DO) using microfabrication technologies. A dynamic etching technique was used to fabricate 10
mm long sensor probes and sharpen them to micrometer dimensions. The sensors utilized a gold sensing electrode inside a recess fabricated at the tip of each microelectrode. Electrochemical performance of these DO MEA sensors was fully characterized by measuring the oxygen concentration of saline solutions with a Ag/AgCl reference electrode. The DO MEA exhibited a rapid 15
s linear response in the 0–9
mg/L (0–21% O
2) range. The DO microelectrode array sensor was successfully applied to evaluation of DO microprofiles in a multi-species aerobic bacterial film. The developed new sensors are able to penetrate samples in order to perform DO measurements, and will enable
in situ analysis in many biological applications. |
| doi_str_mv | 10.1016/j.snb.2007.06.008 |
| format | Article |
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in situ measurements of dissolved oxygen (DO) using microfabrication technologies. A dynamic etching technique was used to fabricate 10
mm long sensor probes and sharpen them to micrometer dimensions. The sensors utilized a gold sensing electrode inside a recess fabricated at the tip of each microelectrode. Electrochemical performance of these DO MEA sensors was fully characterized by measuring the oxygen concentration of saline solutions with a Ag/AgCl reference electrode. The DO MEA exhibited a rapid 15
s linear response in the 0–9
mg/L (0–21% O
2) range. The DO microelectrode array sensor was successfully applied to evaluation of DO microprofiles in a multi-species aerobic bacterial film. The developed new sensors are able to penetrate samples in order to perform DO measurements, and will enable
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in situ measurements of dissolved oxygen (DO) using microfabrication technologies. A dynamic etching technique was used to fabricate 10
mm long sensor probes and sharpen them to micrometer dimensions. The sensors utilized a gold sensing electrode inside a recess fabricated at the tip of each microelectrode. Electrochemical performance of these DO MEA sensors was fully characterized by measuring the oxygen concentration of saline solutions with a Ag/AgCl reference electrode. The DO MEA exhibited a rapid 15
s linear response in the 0–9
mg/L (0–21% O
2) range. The DO microelectrode array sensor was successfully applied to evaluation of DO microprofiles in a multi-species aerobic bacterial film. The developed new sensors are able to penetrate samples in order to perform DO measurements, and will enable
in situ analysis in many biological applications.</description><subject>Dissolved oxygen</subject><subject>Microelectrode array</subject><subject>Needle-type sensor</subject><subject>Oxygen sensor</subject><issn>0925-4005</issn><issn>1873-3077</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLxDAUhYMoOI7-AHdZuWu96SNtcCXiCwYF0XVIk1vJ0DZjbkecf2-Gce3qbM458H2MXQrIBQh5vc5p6vICoMlB5gDtEVuItimzEprmmC1AFXVWAdSn7IxoDQBVKWHB3l4Q3YDZvNsgd54oDN_oePjZfeLER29jwAHtHINDbmI0O044UYjE-xC5nzj5ectHNLSNOOI00zk76c1AePGXS_bxcP9-95StXh-f725XmS0bMWdtp-qiAuzRyArLAirbGqn6RpWmrdCZDvtO1rUz4KpCFrZNKYUSyvamU2W5ZFeH300MX1ukWY-eLA6DmTBsSRegVJUoU1EcigmGKGKvN9GPJu60AL23p9c62dN7exqkTvbS5uawwUTw7TFqsh4ni87HpEO74P9Z_wJ3tXm3</recordid><startdate>20071212</startdate><enddate>20071212</enddate><creator>Lee, Jin-Hwan</creator><creator>Lim, Tae-Sun</creator><creator>Seo, Youngwoo</creator><creator>Bishop, Paul L.</creator><creator>Papautsky, Ian</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>C1K</scope></search><sort><creationdate>20071212</creationdate><title>Needle-type dissolved oxygen microelectrode array sensors for in situ measurements</title><author>Lee, Jin-Hwan ; Lim, Tae-Sun ; Seo, Youngwoo ; Bishop, Paul L. ; Papautsky, Ian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c371t-8b95240efea64e3204c8a69f793a84edabefb655da0d4262c80d461919cfab933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Dissolved oxygen</topic><topic>Microelectrode array</topic><topic>Needle-type sensor</topic><topic>Oxygen sensor</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Jin-Hwan</creatorcontrib><creatorcontrib>Lim, Tae-Sun</creatorcontrib><creatorcontrib>Seo, Youngwoo</creatorcontrib><creatorcontrib>Bishop, Paul L.</creatorcontrib><creatorcontrib>Papautsky, Ian</creatorcontrib><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Sensors and actuators. B, Chemical</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Jin-Hwan</au><au>Lim, Tae-Sun</au><au>Seo, Youngwoo</au><au>Bishop, Paul L.</au><au>Papautsky, Ian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Needle-type dissolved oxygen microelectrode array sensors for in situ measurements</atitle><jtitle>Sensors and actuators. B, Chemical</jtitle><date>2007-12-12</date><risdate>2007</risdate><volume>128</volume><issue>1</issue><spage>179</spage><epage>185</epage><pages>179-185</pages><issn>0925-4005</issn><eissn>1873-3077</eissn><abstract>Dissolved oxygen is a critical indicator in a variety of biomedical and environmental processes. This work describes the development of a new needle-type microelectrode array (MEA) sensor for
in situ measurements of dissolved oxygen (DO) using microfabrication technologies. A dynamic etching technique was used to fabricate 10
mm long sensor probes and sharpen them to micrometer dimensions. The sensors utilized a gold sensing electrode inside a recess fabricated at the tip of each microelectrode. Electrochemical performance of these DO MEA sensors was fully characterized by measuring the oxygen concentration of saline solutions with a Ag/AgCl reference electrode. The DO MEA exhibited a rapid 15
s linear response in the 0–9
mg/L (0–21% O
2) range. The DO microelectrode array sensor was successfully applied to evaluation of DO microprofiles in a multi-species aerobic bacterial film. The developed new sensors are able to penetrate samples in order to perform DO measurements, and will enable
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| ispartof | Sensors and actuators. B, Chemical, 2007-12, Vol.128 (1), p.179-185 |
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| subjects | Dissolved oxygen Microelectrode array Needle-type sensor Oxygen sensor |
| title | Needle-type dissolved oxygen microelectrode array sensors for in situ measurements |
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