Utilizing laser interference lithography to fabricate hierarchical optical active nanostructures inspired by the blue Morpho butterfly

Radwanul H. Siddique; Abrar Faisal; Ruben Hünig; Carolin Bartels; Irene Wacker; Uli Lemmer; Hendrik Hoelscher

doi:10.1117/12.2066467

5 September 2014 Utilizing laser interference lithography to fabricate hierarchical optical active nanostructures inspired by the blue Morpho butterfly

Radwanul H. Siddique, Abrar Faisal, Ruben Hünig, Carolin Bartels, Irene Wacker, Uli Lemmer, Hendrik Hoelscher

Author Affiliations +

Proceedings Volume 9187, The Nature of Light: Light in Nature V; 91870E (2014) https://doi.org/10.1117/12.2066467
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

The famous non-iridescent blue of the Morpho butter by is caused by a `Christmas tree' like nanostructure which is a challenge for common fabrication techniques. Here, we introduce a method to fabricate this complex morphology utilizing dual beam interference lithography. We add a reflective coating below the photoresist to create a second interference pattern in vertical direction by exploiting the back reflection from the substrate. This vertical pattern exposes the lamella structure into the photosensitive polymer while the horizontal interference pattern determines the distance of the ridges. The photosensitive polymer is chosen accordingly to create the Christmas tree' like tapered shape. The resulting artificial Morpho replica shows brilliant non-iridescent blue up to an incident angle of 40. Its optical properties are close to the original Morpho structure because the refractive index of the polymer is close to chitin. Moreover, the biomimetic surface is water repellent with a contact angle of 110.

Citation Download Citation

Radwanul H. Siddique, Abrar Faisal, Ruben Hünig, Carolin Bartels, Irene Wacker, Uli Lemmer, and Hendrik Hoelscher "Utilizing laser interference lithography to fabricate hierarchical optical active nanostructures inspired by the blue Morpho butterfly", Proc. SPIE 9187, The Nature of Light: Light in Nature V, 91870E (5 September 2014); https://doi.org/10.1117/12.2066467

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available