L Martinez Maestro
Dielectric anomalous response of water at 60 °C
Martinez Maestro, L; del Valle, JC; Camarillo, E; Gonzalo, JA; Aragó, C; Marqués, M; Jaque, D; Lifante, G; García Solé, J; Santacruz-Gómez, K; Carrillo-Torres, RC; Jaque, F
Authors
JC del Valle
E Camarillo
JA Gonzalo
C Aragó
M Marqués
D Jaque
G Lifante
J García Solé
K Santacruz-Gómez
RC Carrillo-Torres
F Jaque
Abstract
Recently, the paraelectric response of water was investigated in the range 0–100 °C. It showed an almost perfect Curie–Weiss behaviour up to 60 °C, but a slight change in slope of 1/εd versus T at 60 °C was overlooked. In this work, we report optical extinction measurements on metallic (gold and silver) nanoparticles dispersed in water, annealed at various temperatures in the range from 20 to 90 °C. An anomalous response at 60 °C is clearly detectable, which we associate to a subtle structural transformation in the water molecules at that temperature. This water anomaly is also manifested by means of a blue shift in the longitudinal surface plasmon resonance of the metallic nanoparticles for the solutions annealed at temperatures higher than about 60 °C. A reanalysis of 1/εd (T) for water in the whole temperature range leads us to conclude that the water molecule undergoes a subtle transformation from a low temperature (0–60 °C) configuration with a dipole moment μ1 = 2.18 D (close to the molecular dipole moment of ice) to a high temperature (60–100 °C) configuration with μ2 = 1.87 D (identical to the molecular dipole moment in water vapour).
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 10, 2014 |
Online Publication Date | Feb 5, 2015 |
Publication Date | Feb 5, 2015 |
Deposit Date | Dec 5, 2019 |
Journal | Philosophical Magazine |
Print ISSN | 1478-6435 |
Electronic ISSN | 1478-6443 |
Publisher | Taylor and Francis |
Volume | 95 |
Issue | 7 |
Pages | 683-690 |
DOI | https://doi.org/10.1080/14786435.2014.1000419 |
Publisher URL | https://doi.org/10.1080/14786435.2014.1000419 |
Related Public URLs | https://www.tandfonline.com/toc/tphm20/current |
Additional Information | Funders : Spanish Ministerio de Economía y Competitividad;DGPA-UNAM;Secretaría de Estado de Investigación Desarrollo e Innovación of the Spanish Ministerio de Economía y Competitividad |
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