| Full text | |
| Author(s): |
Santos, Leandra P.
;
da Silva, Douglas S.
;
Galembeck, Andre
;
Galembeck, Fernando
Total Authors: 4
|
| Document type: | Journal article |
| Source: | IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS; v. 58, n. 2, p. 6-pg., 2022-03-01. |
| Abstract | |
Applying 0.3-1.25 kV/cm electric potential gradients to cooled water vapor triggers the copious formation of electrified ice needles, as long as 36 mm. This is completely different from the meager ice formation in the same setup but in the absence of the external field. Needle excess electric charge is evidenced by its attraction toward the electrodes and by its shape change, when the field is withdrawn. These observations are explained considering the effect of the electric potential on ice surface tension, thus decreasing or eliminating the energy barrier to ice nucleation; and the elongated ice habit that allows the accumulation of charge sufficient to create fields higher than those initially applied. Applying this information to other crystallization phenomena in various systems can contribute to improve industrial processes while preventing the consequences of undesired electrification, in industrial plants and products. (AU) | |
| FAPESP's process: | 14/50906-9 - INCT 2014: in Functional Complex Materials |
| Grantee: | Fernando Galembeck |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 18/00834-2 - Conductive inks, adhesives and coatings made with exfoliated graphite, applied to making electrical components and circuits |
| Grantee: | Fernando Galembeck |
| Support Opportunities: | Research Grants - Innovative Research in Small Business - PIPE |
| FAPESP's process: | 19/04565-9 - Conductive inks, adhesives and coatings made with exfoliated graphite, applied to making electrical components and circuits |
| Grantee: | Leandra Pereira dos Santos |
| Support Opportunities: | Scholarships in Brazil - Innovative Research in Small Business - PIPE |