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IOP PUBLISHING LTD
DOI: 10.1088/1742-6596/329/1/012003
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Funding
- Dutch Ministry of Economic Affairs
- European Union Regional Development Fund
- Province of Fryslan
- City of Leeuwarden
- EZ/Kompas program of the Samenwerkingsverband Noord - Nederland
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When a high-voltage direct-current is applied to two beakers filled with water or polar liquid dielectrica, a horizontal bridge forms between the two beakers. In this work such bridges made of methanol, ethanol, 1-propanol and 2-propanol are investigated with polarimetry and thermography. Whereas methanol, ethanol and 1-propanol bridges become warm like a water bridge, a 2-propanol bridge cools down relative to the surroundings. It is shown how the different stability of the primary and secondary alcoholate ions and the resulting small difference in conductivity between 1-propanol and 2-propanol is responsible for this novel effect.
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