Digital holographic microscopy for real-time observation of surface-relief grating formation on azobenzene-containing films

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Light-induced surface structuring of azobenzene-containing films allows for creation of complex surface relief patterns with varying heights, patterns which would be difficult to create using conventional lithography tools. In order to realize the full potential of these patternable surfaces, understanding their formation dynamics and response to different types of light fields is crucial. In the present work we introduce digital holographic microscopy (DHM) for real time, in-situ observation of surface-relief grating (SRG) formation on azobenzene-containing films. This instrument allows us to measure the surface topography of films while illuminating them with two individually controlled laser beams for creating periodically varying patterns. By utilizing the information of the grating formation dynamics, we combine multiple grating patterns to create pixels with wide gamut structural colors as well as blazed grating structures on the film surface. As long as the material behaviour is linear, any Fourier optical surface can be created utilizing this multiple patterning approach. The DHM instrument presented here has the potential for creating complex 3D surface reliefs with nanometric precision.

Original languageEnglish
Article number19642
JournalScientific Reports
Volume10
Issue number1
DOIs
Publication statusPublished - 2020
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • General

Fingerprint

Dive into the research topics of 'Digital holographic microscopy for real-time observation of surface-relief grating formation on azobenzene-containing films'. Together they form a unique fingerprint.

Cite this