The alignment of nematic liquid crystal by the Ti layer processed by nonlinear laser lithography

Simple item page
buir.contributor.authorPavlov, Ihor
buir.contributor.authorİlday, Fatih Ömer
dc.citation.epage1271en_US
dc.citation.issueNumber9en_US
dc.citation.spage1265en_US
dc.citation.volumeNumber45en_US
dc.contributor.authorPavlov, Ihoren_US
dc.contributor.authorRybak, A.en_US
dc.contributor.authorDobrovolskiy, A.en_US
dc.contributor.authorKadan, V.en_US
dc.contributor.authorBlonskiy, I.en_US
dc.contributor.authorİlday, Fatih Ömeren_US
dc.contributor.authorKazantseva, Z.en_US
dc.contributor.authorGvozdovskyy, I.en_US
dc.date.accessioned2019-02-21T16:03:08Z
dc.date.available2019-02-21T16:03:08Z
dc.date.issued2018en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractIt is well known that the alignment of liquid crystals (LCs) can be realised by rubbing or photoalignment technologies. Recently, nonlinear laser lithography (NLL) was introduced as a fast, relatively low-cost method for large area nano-grating fabrication based on laser-induced periodic surface structuring. In this letter for the first time, the usage of the NLL as a perspective method of the alignment of nematics was presented. By NLL, nanogrooves with about 0.92 μm period were formed on Ti layer. The nanostructured Ti layer (NSTL) was coated with oxidianiline-polyimide film with annealing of the polymer followed without any further processing. Aligning properties of NSTLs were examined with combined twist LC cell. The dependencies of the twist angle of LC cells and azimuthal anchoring energy (AE) of layers on scanning speed and power of laser beam during processing of the Ti layer were the focus of our studies as well. The maximum azimuthal AE, obtained for pure NSTL, is comparable with photoalignment technology. It was found that the deposition of polyimide film on NSTL leads to the gain effect of the azimuthal AE. Also, atomic force microscopy (AFM) study of aligning surfaces was carried out.
dc.description.sponsorshipIhor Pavlov and Fatih Ö. İlday acknowledge financial support from European Research Council (ERC) Consolidator, Grant “Nonlinear Laser Lithography”, No: ERC-617521 NLL.
dc.identifier.doi10.1080/02678292.2018.1429027
dc.identifier.issn0267-8292
dc.identifier.urihttp://hdl.handle.net/11693/50077
dc.language.isoEnglish
dc.publisherTaylor and Francis
dc.relation.isversionofhttps://doi.org/10.1080/02678292.2018.1429027
dc.relation.projectBilkent Üniversitesi - European Research Council, ERC: ERC-617521 - Kent State University, KSU - European Research Council, ERC: ERC-617521
dc.source.titleLiquid Crystalsen_US
dc.subjectAligning layersen_US
dc.subjectAzimuthal anchoring energyen_US
dc.subjectNanostructured titanium layersen_US
dc.subjectNematic liquid crystalsen_US
dc.subjectNonlinear laser lithographyen_US
dc.subjectPolyimideen_US
dc.titleThe alignment of nematic liquid crystal by the Ti layer processed by nonlinear laser lithographyen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
The_alignment_of_nematic_liquid_crystal_by_the_Ti_layer_processed_by_nonlinear_laser_lithography.pdf
Size:
1.13 MB
Format:
Adobe Portable Document Format
Description:
View / Download
Download

Collections

Department of Physics
Department of Electrical and Electronics Engineering
Institute of Materials Science and Nanotechnology (UNAM)
Nanotechnology Research Center (NANOTAM)