scholarly journals Functional Photonic Elements Based on Liquid Crystal Metasurfaces

2021 ◽  
Vol 2015 (1) ◽  
pp. 012050
Author(s):  
Maxim V. Gorkunov ◽  
Irina V. Kasyanova ◽  
Vladimir V. Artemov ◽  
Artur R. Geivandov ◽  
Ivan V. Simdyankin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Soft Matter ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Beam Splitting ◽  
Beam Path ◽  
Self Assembling ◽  
Alignment Layers ◽  
Polymer Alignment

Abstract We study versatile soft-matter metasurfaces based on self-assembling of nematic liquid crystal on polymer alignment layers processed with a focused ion beam. Digital control of the beam path allows imprinting patterns that induce different complex distributions of the refractive index within several micrometer thick liquid crystal layers. We optimize them to implement various optical functionalities, such as broadband anomalous refraction, wide-aperture focusing, and beam splitting in tens of channels.

Microscopic Studies of Alignment Layers Processed by a Focused Ion Beam for the Creation of Liquid Crystal Metasurfaces

2021 ◽  
Vol 66 (4) ◽  
pp. 673-681
Author(s):  
V. V. Artemov ◽  
D. N. Khmelinin ◽  
A. V. Mamonova ◽  
M. V. Gorkunov ◽  
A. A. Ezhov
Keyword(s):  
Liquid Crystal ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Microscopic Studies ◽  
The Creation ◽  
Alignment Layers

scholarly journals Note: Optical fiber milled by focused ion beam and its application for Fabry-Pérot refractive index sensor

2011 ◽  
Vol 82 (7) ◽  
pp. 076103 ◽  
Author(s):  
Wu Yuan ◽  
Fei Wang ◽  
Alexey Savenko ◽  
Dirch Hjorth Petersen ◽  
Ole Bang
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Refractive Index Sensor ◽  
Fabry Perot

Liquid crystal microlenses based on binary surface alignment controlled by focused ion beam treatment

2021 ◽  
Author(s):  
Serguei Palto ◽  
Artur Geivandov ◽  
Irina Kasyanova ◽  
Ivan Simdyankin ◽  
Vladimir Artemov ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Surface Alignment ◽  
Ion Beam Treatment

Poly(styrene–maleic anhydride) films as alignment layers for liquid crystal systems via ion-beam irradiation

RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 76743-76747 ◽  
Author(s):  
H.-Y. Mun ◽  
H.-C. Jeong ◽  
J. H. Lee ◽  
J.-H. Won ◽  
H.-G. Park ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Maleic Anhydride ◽  
Ion Beam ◽  
Beam Irradiation ◽  
Ion Beam Irradiation ◽  
Styrene Maleic Anhydride ◽  
Alignment Layers

We report an investigation of poly(styrene–maleic anhydride) (SMA) films as liquid crystal (LC) alignment layers fabricated by ion-beam (IB) irradiation.

Development of Functional Surfaces on High-Density Polyethylene (HDPE) via Gas-Assisted Etching (GAE) Using Focused Ion Beams

2015 ◽  
Vol 21 (6) ◽  
pp. 1379-1386
Author(s):  
Meltem Sezen ◽  
Feray Bakan
Keyword(s):  
Surface Properties ◽  
High Density Polyethylene ◽  
Soft Matter ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Polymer Surface ◽  
High Density ◽  
Irradiation Damage ◽  
Physical Chemical ◽  
Functional Surfaces

AbstractIrradiation damage, caused by the use of beams in electron and ion microscopes, leads to undesired physical/chemical material property changes or uncontrollable modification of structures. Particularly, soft matter such as polymers or biological materials is highly susceptible and very much prone to react on electron/ion beam irradiation. Nevertheless, it is possible to turn degradation-dependent physical/chemical changes from negative to positive use when materials are intentionally exposed to beams. Especially, controllable surface modification allows tuning of surface properties for targeted purposes and thus provides the use of ultimate materials and their systems at the micro/nanoscale for creating functional surfaces. In this work, XeF2 and I2 gases were used in the focused ion beam scanning electron microscope instrument in combination with gallium ion etching of high-density polyethylene surfaces with different beam currents and accordingly different gas exposure times resulting at the same ion dose to optimize and develop new polymer surface properties and to create functional polymer surfaces. Alterations in the surface morphologies and surface chemistry due to gas-assisted etching-based nanostructuring with various processing parameters were tracked using high-resolution SEM imaging, complementary energy-dispersive spectroscopic analyses, and atomic force microscopic investigations.

Surface reformation and electro-optical characteristics of liquid crystal alignment layers using ion beam irradiation

2008 ◽  
Vol 104 (6) ◽  
pp. 064502 ◽  
Author(s):  
Byeong-Yun Oh ◽  
Kang-Min Lee ◽  
Byoung-Yong Kim ◽  
Young-Hwan Kim ◽  
Jin-Woo Han ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Ion Beam ◽  
Optical Characteristics ◽  
Beam Irradiation ◽  
Ion Beam Irradiation ◽  
Liquid Crystal Alignment ◽  
Crystal Alignment ◽  
Alignment Layers

Liquid-Crystal Metasurfaces Self-Assembled on Focused Ion Beam Patterned Polymer Layers: Electro-Optical Control of Light Diffraction and Transmission

2020 ◽  
Vol 12 (27) ◽  
pp. 30815-30823 ◽  
Author(s):  
Maxim V. Gorkunov ◽  
Irina V. Kasyanova ◽  
Vladimir V. Artemov ◽  
Alexander A. Ezhov ◽  
Alena V. Mamonova ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Light Diffraction ◽  
Optical Control ◽  
Polymer Layers ◽  
Self Assembled

P-85: Hybrid Aligned Nematic Liquid Crystal Cell of Two Domains using Two Identical Alignment Layers Treated by Ion Beam

2004 ◽  
Vol 35 (1) ◽  
pp. 570
Author(s):  
Jin Seog Gwag ◽  
Kyong-Ho Park ◽  
Mi Jun Jung ◽  
Jong Lac Lee ◽  
Gi-Dong Lee ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Ion Beam ◽  
Liquid Crystal Cell ◽  
Crystal Cell ◽  
Alignment Layers

scholarly journals Photonic bandgaps in selectively filled photonic crystal fibers

2017 ◽  
Vol 9 (3) ◽  
pp. 79 ◽  
Author(s):  
Olga H. Jaworska ◽  
Sławomir Ertman
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Optical Fibers ◽  
Focused Ion Beam ◽  
Photonic Crystal Fibers ◽  
Ion Beam ◽  
Photonic Bandgaps ◽  
Practical Applications ◽  
Enhanced Sensitivity ◽  
Crystal Fibers

Simulations of selectively filled photonic crystal fibers using finite elements method were performed. Different patterns of filling were modeled and compared to an empty and fully filled fiber. Dependence of effective refractive indices of guided modes, phase birefringence and confinement losses on guided wavelength was investigated. A comparison of width of photonic bandgaps in different structures was made. Full Text: PDF ReferencesPh. St. J. Russell, "Photonic-Crystal Fibers", J. Lightwave Technol. 24, 4729 (2006) CrossRef Y. Han, S. Tan, M. K. K. Oo, D. Pristinski, S. Sukhishvili, and H. Du, "Towards Full-Length Accumulative Surface-Enhanced Raman Scattering-Active Photonic Crystal Fibers", Adv. Mat. 22, 2647 (2010) CrossRef S. Ertman, A. H. Rodríguez, M. M. Tefelska, M. S. Chychłowski, D. Pysz, R. Buczyński, E. Nowinowski-Kruszelnicki, R. Dąbrowski, and T. R. Woliński, "Index Guiding Photonic Liquid Crystal Fibers for Practical Applications", J. Lightwave Technol. 30, 1208 (2012) CrossRef K. Mileńko, S. Ertman, T. R. Woliński, "Numerical Analysis of the Phase Birefringence of the Photonic Crystal Fibers Selectively Filled with Liquid Crystal", Mol. Cryst. Liq. Cryst. 596, 4 (2014) CrossRef Y. Wang, C. Liao, X. Zhong, Z. Li, Y. Liu, J. Zhou, and K. Yang, "Selective-fluid-filled photonic crystal fibers and applications", Proc. SPIE 8914, 89140J-1 (2013) CrossRef F. Wang, W. Yuan, O. Hansen, and O. Bang, "Selective filling of photonic crystal fibers using focused ion beam milled microchannels", Opt. Express 19, 17585 (2011) CrossRef T. Martynkien, G. Statkiewicz-Barabach, J. Olszewski et al., "Highly birefringent microstructured fibers with enhanced sensitivity to hydrostatic pressure", Opt. Express 18, 15113 (2010) CrossRef B. T. Kuhlmey, R.C. McPhedran, C. M. de Sterke, "Modal cutoff in microstructured optical fibers", Opt. Lett. 27, 1684 (2002) CrossRef

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