Electrically induced dynamic surface topographies

In many applications, especially touch-input devices, electric field is the preferred trigger. Based on the knowledge required on the light-induced dynamics in LCNs, our approach is based on (di)electrically induced changes of the order parameter and subsequently the dynamic induced volumetric space between them rather than a macroscopic reorientation of the molecular rods. The electrical response will be extra triggered by added polar and ionic materials and/or by poled dipoles. The high-dielectric anisotropy should induce a strong coupling with the electrical field.


Danqing Liu, Nicholas B. Tito, and Dirk J. Broer, Protruding organic surfaces triggered by in-plane electric fieldsNature Communications 2017, 8, 1526.

Wei Feng, Dirk J. Broer and Danqing Liu*, Combined light and electric response of topographic liquid crystal network surfacesAdvanced Functional Materials, 1901681, 2019.

Wei Feng, Dirk J. Broer and Danqing Liu*, Oscillating chiral-nematic fingerprints wipe away dust, Advanced Materials 2018, 30, 1704970

Researcher: Wei Feng (PhD candidate)