Raman scattering measurements on a floating water bridge

Ponterio, Rosina Celeste; Pochylski, Mikołaj; Aliotta, F.; Vasi, C.; Fontanella, M. E.; Saija, Franz

doi:10.1088/0022-3727/43/17/175405

Cited by 58 publications

(53 citation statements)

References 26 publications

(78 reference statements)

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“…We limit ourselves to quote the fascinating experiment of the formation of the floating water bridge [77][78][79][80][81][82][83][84] where surprisingly water gets self-piped in presence of high voltages and becomes able to flow in the absence of any container from one beaker to another. A possible explanation of this effect along the lines of the QED approach has been proposed [85].…”

Section: Discussionmentioning

confidence: 99%

Water Dynamics at the Root of Metamorphosis in Living Organisms

Giudice

Spinetti²,

Tedeschi³

2010

Water

127

116

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Liquid water has been recognized long ago to be the matrix of many processes, including life and also rock dynamics. Interactions among biomolecules occur very differently in a non-aqueous system and are unable to produce life. This ability to make living processes possible implies a very peculiar structure of liquid water. According to modern Quantum Field Theory (QFT), a complementary principle (in the sense of Niels Bohr) holds between the number N of field quanta (including the matter field whose quanta are just the atoms/molecules) and the phase Ф. This means that when we focus on the atomic structure of matter it loses its coherence properties and, vice versa, when we examine the phase dynamics of the system its atomic structure becomes undefined. Superfluid liquid Helium is the first example of this peculiar quantum dynamics. In the present paper we show how consideration of the phase dynamics of liquid water makes the understanding of its peculiar role in the onset of self-organization in living organisms and in ecosystems possible.

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Section: Discussionmentioning

confidence: 99%

Water Dynamics at the Root of Metamorphosis in Living Organisms

Giudice

Spinetti²,

Tedeschi³

2010

Water

127

116

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“…This difference stems from an excess contribution due to not hydrogen bonded molecules. 19 Such a contribution, structural in character, could be related with the supposed polarization effects driving the bridge formation. However, stable bridges form also under alternating electric fields 19 and experiments indicate a very long structural relaxation time for the bridge.…”

Section: Istituto Per I Processi Chimico-fisici Cnr Viale Ferdinandmentioning

confidence: 99%

“…19 Such a contribution, structural in character, could be related with the supposed polarization effects driving the bridge formation. However, stable bridges form also under alternating electric fields 19 and experiments indicate a very long structural relaxation time for the bridge. Further experiments are required to understand which of the proposed mechanisms is responsible for the phenomenon.…”

Section: Istituto Per I Processi Chimico-fisici Cnr Viale Ferdinandmentioning

confidence: 99%

“…19 We performed the experiment with water, PEG, and mPEG; the formation of a column of liquid has been observed in any case. In addition, two nonpolar liquids ͑silicone oil and paraffin oil͒ have been tested.…”

Section: Istituto Per I Processi Chimico-fisici Cnr Viale Ferdinandmentioning

confidence: 99%

“…7,9 Also the effect observed in the OH-stretching Raman spectra of water-bridges can be simply related with the weakness of the original H-bond connectivity due to the increasing ion concentration produced by hydrolysis effects. 19 In this context it should have to be remarked that all water-bridge experiments starts as a capillary water channel which stabilizes and increases in diameter when the applied voltage exceeds a certain value. [5][6][7][8][9][10] Together with the formation of the capillary bridge a significant mass flow is set up from the anode to the cathode beaker.…”

Section: Istituto Per I Processi Chimico-fisici Cnr Viale Ferdinandmentioning

confidence: 99%

See 2 more Smart Citations

Communication: An extended model of liquid bridging

Saija

Aliotta

Fontanella

et al. 2010

The Journal of Chemical Physics

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Recent phenomenological studies have drawn attention to an appealing effect, observed for the first time in 1893, today known as water-bridge. The phenomenon has been ascribed to unknown properties of water. We report some experimental results showing that, contrary to a widely common belief, the phenomenon is not to be related with water neither with a property of hydrogen bonded networks. Using a very simple model, we show that the liquid bridge phenomenon is originated by electrostatic effects and can be reproduced in any dense fluid with no respect of its peculiar molecular properties. This basic approach is able to reproduce many of the experimentally observed features of the bridge formation. In perspective of future investigations, the possible phenomena responsible of the bridge stability, after its formation, are briefly discussed.

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Oil–water transport in clay‐hosted nanopores: Effects of long‐range electrostatic forces

2020

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Charged clay surfaces can impact the storage and mobility of hydrocarbon and water mixtures. Here, we use equilibrium molecular dynamics (MD) and nonequilibrium MD simulations to investigate hydrocarbon‐water mixtures and their transport in slit‐shaped illite nanopores. We construct two illite pore models with different surface chemistries: potassium–hydroxyl (PH) and hydroxyl–hydroxyl (HH) structures. In HH nanopore, we observe water adsorption on the clay surfaces. In PH nanopores, however, we observe the formation of water bridges because of the existence of a local, long‐range electric field. Our NEMD simulations demonstrate that the velocity profiles across the pore depend strongly on water concentration, pore width and the presence or absence of the water bridge. This fundamental study provides a theoretical basis for understanding nanofluidics with charged surfaces and can be applied in such as biological processes, chemical and physical fields, and the oil and gas extraction in clay‐rich formations.

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Raman scattering measurements on a floating water bridge

Cited by 58 publications

References 26 publications

Water Dynamics at the Root of Metamorphosis in Living Organisms

Water Dynamics at the Root of Metamorphosis in Living Organisms

Communication: An extended model of liquid bridging

Oil–water transport in clay‐hosted nanopores: Effects of long‐range electrostatic forces

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