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Printing Flowers? Custom-Tailored Photonic Cellulose Films with Engineered Surface Topography

42 Pages Posted: 24 Jan 2019 Publication Status: Published

See all articles by Guang Chu

Guang Chu

Technion-Israel Institute of Technology - NanoEngineering Group

Andrea Camposeo

National Research Council (CNR) - NEST

Rita Vilensky

Technion-Israel Institute of Technology - NanoEngineering Group

Gleb Vasilyev

Technion-Israel Institute of Technology - NanoEngineering Group

Patrick Martin

Technion-Israel Institute of Technology - NanoEngineering Group

Dario Pisignano

National Research Council (CNR) - NEST

Eyal Zussman

Technion-Israel Institute of Technology - NanoEngineering Group

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Abstract

Wrought by nature’s wondrous hand, surface topographies are discovered on all length scales in living creatures with variety of functions. Inspired by the floral striations, here we developed a scalable means of fabricating custom-tailored photonic cellulose films that contained cholesteric organization and microscopic wrinkly surface topography. The freestanding films were prepared by moulding cellulose nanocrystal ink onto an oriented wrinkle template through evaporation-assisted nanoimprinting lithography, yielding morphology-induced light scattering at short wavelength as well as optically tuneable structural colour that derived from helical cellulose matrix. Moreover, this wrinkled surface relief on cholesteric cellulose films could be precisely controlled, enabling engineered printing of microscopic patterned images. These bio-inspired films offer a convenient opportunity for the production of coupled photonic crystals which may be of value in advanced optical devices.

Keywords: Cellulose Nanocrystals, Liquid Crystal, Surface Topography, Nanoimprinting, Floral-mimetic Structure

Suggested Citation

Chu, Guang and Camposeo, Andrea and Vilensky, Rita and Vasilyev, Gleb and Martin, Patrick and Pisignano, Dario and Zussman, Eyal, Printing Flowers? Custom-Tailored Photonic Cellulose Films with Engineered Surface Topography (January 23, 2019). Available at SSRN: https://ssrn.com/abstract=3318943 or http://dx.doi.org/10.2139/ssrn.3318943
This version of the paper has not been formally peer reviewed.

Guang Chu (Contact Author)

Technion-Israel Institute of Technology - NanoEngineering Group ( email )

Technion City
Haifa, Haifa 32000
Israel

Andrea Camposeo

National Research Council (CNR) - NEST

Piazza S. Silvestro 12
I-56127 Pisa
Italy

Rita Vilensky

Technion-Israel Institute of Technology - NanoEngineering Group

Technion City
Haifa, Haifa 32000
Israel

Gleb Vasilyev

Technion-Israel Institute of Technology - NanoEngineering Group

Technion City
Haifa, Haifa 32000
Israel

Patrick Martin

Technion-Israel Institute of Technology - NanoEngineering Group

Technion City
Haifa, Haifa 32000
Israel

Dario Pisignano

National Research Council (CNR) - NEST

Piazza S. Silvestro 12
I-56127 Pisa
Italy

Eyal Zussman

Technion-Israel Institute of Technology - NanoEngineering Group

Technion City
Haifa, Haifa 32000
Israel

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