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SCANNING ELECTROCHEMICAL MICROSCOPY AS A PROBE OF LOCAL FLUID-FLOW THROUGH POROUS SOLIDS - APPLICATION TO THE MEASUREMENT OF CONVECTIVE RATES THROUGH A SINGLE DENTINAL TUBULE
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UNSPECIFIED (1995) SCANNING ELECTROCHEMICAL MICROSCOPY AS A PROBE OF LOCAL FLUID-FLOW THROUGH POROUS SOLIDS - APPLICATION TO THE MEASUREMENT OF CONVECTIVE RATES THROUGH A SINGLE DENTINAL TUBULE. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 91 (9). pp. 1407-1410.
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Abstract
Scanning electrochemical microscopy (SECM) is shown to be a powerful technique for imaging the rate of fluid flow through porous solids. Using a dentine slice (containing tubules of ca. 2 mu m diameter) as an example, local fluid flow rates and topography of the sample are sequentially mapped in situ by monitoring the transport-limited current for the electrolysis of a target mediator (oxidation of aqueous hexacyanoferrate(ll) as a function of tip position, with and without an applied fluid pressure. It is demonstrated, for the first time, that: (i) rates of fluid flow through dentine vary dramatically at the microscopic level and (ii) the flow rate through a single tubule can be quantified.
Item Type: | Journal Item | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Journal or Publication Title: | JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | ||||
Publisher: | ROYAL SOC CHEMISTRY | ||||
ISSN: | 0956-5000 | ||||
Official Date: | 7 May 1995 | ||||
Dates: |
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Volume: | 91 | ||||
Number: | 9 | ||||
Number of Pages: | 4 | ||||
Page Range: | pp. 1407-1410 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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