scholarly journals Demonstration of a diffraction-based optical diffuser inspired by the Morpho butterfly

2021 ◽  
Author(s):  
Kazuma Yamashita ◽  
Kentaro Kunitsu ◽  
Takuma Hattori ◽  
Yuji Kuwahara ◽  
Akira Saito
Keyword(s):  
Morpho Butterfly ◽  
Optical Diffuser

scholarly journals Mastering of NIL Stamps with Undercut T-Shaped Features from Single Layer to Multilayer Stamps

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 956
Author(s):  
Philipp Taus ◽  
Adrian Prinz ◽  
Heinz D. Wanzenboeck ◽  
Patrick Schuller ◽  
Anton Tsenov ◽  
...  
Keyword(s):  
Electron Beam Lithography ◽  
Nanoimprint Lithography ◽  
Silicon Oxide ◽  
Three Dimensional ◽  
Single Layer ◽  
Fabrication Technology ◽  
Large Area ◽  
Structural Colors ◽  
Biomimetic Structures ◽  
Morpho Butterfly

Biomimetic structures such as structural colors demand a fabrication technology of complex three-dimensional nanostructures on large areas. Nanoimprint lithography (NIL) is capable of large area replication of three-dimensional structures, but the master stamp fabrication is often a bottleneck. We have demonstrated different approaches allowing for the generation of sophisticated undercut T-shaped masters for NIL replication. With a layer-stack of phase transition material (PTM) on poly-Si, we have demonstrated the successful fabrication of a single layer undercut T-shaped structure. With a multilayer-stack of silicon oxide on silicon, we have shown the successful fabrication of a multilayer undercut T-shaped structures. For patterning optical lithography, electron beam lithography and nanoimprint lithography have been compared and have yielded structures from 10 µm down to 300 nm. The multilayer undercut T-shaped structures closely resemble the geometry of the surface of a Morpho butterfly, and may be used in future to replicate structural colors on artificial surfaces.

Spatial mode exchange technique using volume holograms with a random optical diffuser for reduction of crosstalk

2021 ◽  
Author(s):  
Shuanglu Zhang ◽  
Atsushi Okamoto ◽  
Taijun Shiba ◽  
Hotaka Hayashi ◽  
Kazuhisa Ogawa ◽  
...  
Keyword(s):  
Spatial Mode ◽  
Volume Holograms ◽  
Optical Diffuser ◽  
Exchange Technique

The design and fabrication of an optical diffuser for head-up displays

2015 ◽  
Author(s):  
Chi-Hung Lee ◽  
Ming-Chieh Chou ◽  
Yi-Cheng Chen
Keyword(s):  
Optical Diffuser

3D Network Magnetophotonic Crystals Fabricated on Morpho Butterfly Wing Templates

2012 ◽  
Vol 22 (10) ◽  
pp. 2072-2080 ◽  
Author(s):  
Wenhong Peng ◽  
Shenmin Zhu ◽  
Wanlin Wang ◽  
Wang Zhang ◽  
Jiajun Gu ◽  
...  
Keyword(s):  
Butterfly Wing ◽  
3D Network ◽  
Magnetophotonic Crystals ◽  
Morpho Butterfly

scholarly journals Transparent nanocellulose metamaterial enables controlled optical diffusion and radiative cooling

2020 ◽  
Vol 8 (34) ◽  
pp. 11687-11694
Author(s):  
Sampath Gamage ◽  
Evan S. H. Kang ◽  
Christina Åkerlind ◽  
Samim Sardar ◽  
Jesper Edberg ◽  
...  
Keyword(s):  
Radiative Cooling ◽  
Thermal Emitters ◽  
Optical Diffuser

We embedded IR-resonant microparticles as visible scatterers and thermal emitters in a transparent nanocellulose composite, to form a metamaterial that provides radiative cooling while simultaneously functioning as an optical diffuser.

A switchable optical diffuser based on a polymer/nematic liquid crystal composite film with transient polymer balls-networks microstructure

2019 ◽  
Vol 46 (15) ◽  
pp. 2213-2222 ◽  
Author(s):  
Le Zhou ◽  
Cheng Han ◽  
Mohsin Hassan Saeed ◽  
Cuihong Zhang ◽  
Lanying Zhang
Keyword(s):  
Liquid Crystal ◽  
Composite Film ◽  
Nematic Liquid Crystal ◽  
Crystal Composite ◽  
Optical Diffuser

Vapor detection through dynamic process of molecule desorption from butterfly wings

2020 ◽  
Vol 92 (2) ◽  
pp. 223-232
Author(s):  
Zhen Luo ◽  
Zhaoyue Weng ◽  
Qingchen Shen ◽  
Shun An ◽  
Jiaqing He ◽  
...  
Keyword(s):  
Butterfly Wing ◽  
Detection Mechanism ◽  
Vapor Detection ◽  
Desorption Process ◽  
Mixing Ratios ◽  
Vapor Sensing ◽  
Butterfly Wings ◽  
Components Analysis ◽  
Morpho Butterfly ◽  
Wing Scales

AbstractThis work explores an alternative vapor sensing mechanism through analyzing dynamic desorption process from butterfly wings for the differentiation of both individual and mixed vapors quantitatively. Morpho butterfly wings have been used in differentiating individual vapors, but it is challenging to use them for the differentiation of mixed vapor quantitatively. This paper demonstrates the use of Morpho butterfly wings for the sensitive and selective detection of closely related vapors in mixtures. Principal components analysis (PCA) is used to process the reflectance spectra of the wing scales during dynamic desorption of different vapors. With the desorption-based detection mechanism, individual vapors with different concentrations and mixed vapors with different mixing ratios can be differentiated using the butterfly wing based sensors. Both the original butterfly wings and butterfly wings with surface modification show the capability in distinguishing vapors in mixtures, which may offer a guideline for further improving selectivity and sensitivity of bioinspired sensors.

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