Natural features, wettability, and optical diffraction patterns on an elastomeric replica of a superhydrophobic leaf derived via soft lithography

Marco Laurence M. Budlayan; Dina C. Palangyos; Jonathan N. Patricio; Susan D. Arco; Raphael A. Guerrero

doi:10.1117/12.3008323

20 September 2023 Natural features, wettability, and optical diffraction patterns on an elastomeric replica of a superhydrophobic leaf derived via soft lithography

Marco Laurence M. Budlayan, Dina C. Palangyos, Jonathan N. Patricio, Susan D. Arco, Raphael A. Guerrero

Author Affiliations +

Proceedings Volume 12606, Optical Manipulation and Structured Materials Conference; 1260609 (2023) https://doi.org/10.1117/12.3008323
Event: Optics and Photonics International Congress, 2023, Yokohama, Japan

Abstract

Surface features of natural materials such as cuticles, shells, and leaves continue to be used as models for creating sophisticated infrastructure, landscape, and microdevice designs. Optical microscopy is the easiest and most accessible tool for examining such surface features and micropatterns. This method, however, fails to probe opaque surfaces like thick skin and leaves since it needs enough light to penetrate the sample. In this work, we demonstrate the feasibility of probing the natural structures of a superhydrophobic leaf using simple optical microscopy by replicating the leaf surface on an elastomer via soft lithography. Optical images of the replica revealed intricate details of features present on the leaf, including the stoma, cuticle boundary, and trichome. Contact angle measurements were also conducted to investigate the wettability of the real leaves and their replicas. Finally, we utilized the fabricated replicas as optical gratings that were observed to generate various diffraction patterns with fluctuating intensities. Our work offers a new perspective on alternative optical microscopy strategies and optical beam tuning using biomimetic, low-cost materials.

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Marco Laurence M. Budlayan, Dina C. Palangyos, Jonathan N. Patricio, Susan D. Arco, and Raphael A. Guerrero "Natural features, wettability, and optical diffraction patterns on an elastomeric replica of a superhydrophobic leaf derived via soft lithography", Proc. SPIE 12606, Optical Manipulation and Structured Materials Conference, 1260609 (20 September 2023); https://doi.org/10.1117/12.3008323

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KEYWORDS

Lithography

Diffraction

Optical surfaces

Biomimetics

Optical microscopy

Polymers

Opacity

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