Details
| Original language | English |
|---|---|
| Pages (from-to) | 19055-19058 |
| Number of pages | 4 |
| Journal | Journal of Physical Chemistry |
| Volume | 100 |
| Issue number | 49 |
| Publication status | Published - 5 Dec 1996 |
Abstract
A mercury drop covered by an aqueous solution which is brought into contact with a metal tip at a fixed potential can be excited to sustained electromechanical oscillations ("beating mercury heart"). The driving force for these pulsations is the electrocapillary effect. We investigated these excitations for the traditional watch glass geometry and for linear and ring-shaped geometries with different lengths and diameters, respectively, varying the potential of the metal tip. We find standing waves in the linear geometry with the number of nodes depending on the potential. In the ring geometry we observe a fast pulsation mode and a slow mode with 2-fold symmetry axis. In addition, we find solitary waves circulating on the ring.
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of Physical Chemistry, Vol. 100, No. 49, 05.12.1996, p. 19055-19058.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Hydrodynamic modes of the "beating mercury heart" in varying geometries
AU - Smolin, S.
AU - Imbihl, R.
PY - 1996/12/5
Y1 - 1996/12/5
N2 - A mercury drop covered by an aqueous solution which is brought into contact with a metal tip at a fixed potential can be excited to sustained electromechanical oscillations ("beating mercury heart"). The driving force for these pulsations is the electrocapillary effect. We investigated these excitations for the traditional watch glass geometry and for linear and ring-shaped geometries with different lengths and diameters, respectively, varying the potential of the metal tip. We find standing waves in the linear geometry with the number of nodes depending on the potential. In the ring geometry we observe a fast pulsation mode and a slow mode with 2-fold symmetry axis. In addition, we find solitary waves circulating on the ring.
AB - A mercury drop covered by an aqueous solution which is brought into contact with a metal tip at a fixed potential can be excited to sustained electromechanical oscillations ("beating mercury heart"). The driving force for these pulsations is the electrocapillary effect. We investigated these excitations for the traditional watch glass geometry and for linear and ring-shaped geometries with different lengths and diameters, respectively, varying the potential of the metal tip. We find standing waves in the linear geometry with the number of nodes depending on the potential. In the ring geometry we observe a fast pulsation mode and a slow mode with 2-fold symmetry axis. In addition, we find solitary waves circulating on the ring.
UR - http://www.scopus.com/inward/record.url?scp=0001155125&partnerID=8YFLogxK
U2 - 10.1021/jp9616425
DO - 10.1021/jp9616425
M3 - Article
AN - SCOPUS:0001155125
VL - 100
SP - 19055
EP - 19058
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
SN - 0022-3654
IS - 49
ER -