Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Fuchs, EC; Cherukupally, A; Paulitsch-Fuchs, AH; Agostinho, LLF; Wexler, AD; Woisetschlager, J; Freund, FT.
Investigation of the mid-infrared emission of a floating water bridge
J PHYS D APPL PHYS. 2012; 45(47): 475401
Doi: 10.1088/0022-3727/45/47/475401
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- Co-Autor*innen der Med Uni Graz
- Paulitsch-Fuchs Astrid Helga
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- Abstract:
- We report on the infrared emission of aqueous bridges under the application of high dc voltage (;'floating water bridge') over the range between 400 and 2500 cm(-1) (4.0-10.3 mu m). Comparison with bulk water of the same temperature reveals an additional broad peak at similar to 2200 cm(-1) as well as water vapour emission lines. Two complementary explanations are presented for the broad peak: first, a cooperative proton transfer comprising an orientational motion along the direction of conduction is suggested. Second, the electrolysis-less current flow is explained by a proton/defect-proton band mechanism, which is in line with the cooperative proton transfer. The water vapour emissions occur due to collision ionization of space charges with micro-and nano-droplets which are electrosprayed from the liquid/gas interface.