Tampere University of Technology

TUTCRIS Research Portal

Humidity Influence on Optical Properties of Nanowire Colloids with Modulated Visual Response to Electrostatic Charge

Research output: Contribution to journalArticleScientific


Original languageEnglish
Pages (from-to)34-37
Number of pages4
JournalColloids and Interface Science Communications
Early online dateDec 2017
Publication statusPublished - 2018
Publication typeB1 Article in a scientific magazine


Electric field created by the nearby electrostatic charge orients the colloidal nanowires in the medium of low dielectric constant, causing a visible color change. We show that the kinetics of subsequent color restoration correlates well to ambient relative humidity. Presented principle could be used for detecting humidity, which affects net surface electrostatic charge possibly via chemical reactions.


  • ZnO nanowire, Colloid, Optical, Electrostatic surface charge, Detecting

Publication forum classification

Field of science, Statistics Finland