Results 1 to 10 of about 1,590 (234)

A self-healing ferroelectric liquid crystal electro-optic shutter based on vertical surface-relief grating alignment [PDF]

Nature Communications, 2021
Ferroelectric liquid crystals (FLCs) have faster optical response times than nematic crystals, but they are also less robust to external shock. Here the authors develop an FLC geometry that reduces the sensitivity to external disruption through self ...
Peter J. M. Wyatt, James Bailey, Mamatha Nagaraj, J. Cliff Jones   +3 more
doaj   +2 more sources

Investigating the link between a layer thickness and surface relief depth in an azo poly(ether imide) [PDF]

Scientific Reports
Surface relief grating formation in photo-responsive azo polymers under irradiation is a long-ago-found phenomenon, but all the factors governing its efficiency are still not fully recognized.
Mateusz Nieborek, Dariusz Szmigiel, Paweł Komorowski, Agnieszka Siemion, Jolanta Konieczkowska, Ewa Schab-Balcerzak, Anna Kozanecka-Szmigiel   +6 more
doaj   +2 more sources

Direct Writing of Quasi-Sinusoidal and Blazed Surface Relief Optical Transmission Gratings in Bi₁₂GeO₂₀, Er: LiNbO₃ and Er: Fe: LiNbO₃ Crystals by Nitrogen Ion Microbeams of 5 MeV and 10.5 MeV Energy [PDF]

Sensors
High diffraction efficiency optical transmission gratings with quasi-sinusoidal and saw-tooth surface relief profiles were fabricated in Bi12GeO20, Er: LiNbO3 and Er: Fe: LiNbO3 crystals by ion beam implantation.
István Bányász, Gyula Nagy, Vladimir Havránek, Maria Cinta Pujol, Ágnes Nagyné Szokol, György Kármán, Robert Magnusson, István Rajta   +7 more
doaj   +2 more sources

Surface Relief Grating on Chitosan-N,N-dimethyl-4-(2-pyridylazo)aniline Thin Film. [PDF]

Polymers (Basel), 2022
Atmah NRA, Caliman WR, Pawlicka A, Sabat RG, Nunzi JM.   +4 more
europepmc   +2 more sources

Surface Relief Gratings of Slide-Ring Hydrogels for Label-Free Biosensing [PDF]

Gels
The creation of surface relief gratings using hydrogels for label-free biomolecule detection represents a significant advance in the development of versatile, cutting-edge biosensors.
Aitor Cubells-Gómez, María Isabel Lucío, María-José Bañuls, Ángel Maquieira   +3 more
doaj   +2 more sources

Optimal Design and Analysis of Wide-Band Near-Infrared Hybrid Dielectric Gratings with High Transmission Efficiency [PDF]

Micromachines
Since surface relief transmission gratings have very strict requirements on operators and use environment, according to the semiconductor laser external cavity spectral beam combining system, this paper proposes a design scheme for a semiconductor laser ...
Ye Wang, Yongyi Chen, Li Qin, Lijun Wang
doaj   +2 more sources

Photoinduced surface relief grating formation for a single crystal of 4-aminoazobenzene. [PDF]

Int J Mol Sci, 2010
Nakano H.
europepmc   +2 more sources

Curved geometric-phase optical element fabrication using top-down alignment [PDF]

Nanophotonics
Advanced optical technologies, such as next-generation displays and holographic systems, demand high efficiency, lightweight designs, compact dimensions, and compatibility with curved and thin substrates.
Park Gayeon, Kim Minseok, Won Kanghee, Song Seok Ho   +3 more
doaj   +2 more sources

Real-Time Plasmonic Strain Sensors Based on Surface Relief Diffraction Gratings [PDF]

Micromachines
Large-scale diffraction gratings were fabricated in surface relief on azobenzene thin films and transferred to flexible PDMS substrates using soft lift-off lithography.
Yazan Bdour, Ribal Georges Sabat
doaj   +2 more sources

Two-Dimensional Polarization Holographic Gratings in Azopolymer Thin Films: Polarization Properties in the Presence or Absence of Surface Relief

Photonics, 2023
During polarization holographic recording in azopolymer thin films, usually together with the volume anisotropic grating, a surface relief grating (SRG) is also formed.
Georgi Mateev, Lian Nedelchev, Ludmila Nikolova, Branimir Ivanov, Velichka Strijkova, Elena Stoykova, Kihong Choi, Joongki Park, Dimana Nazarova   +8 more
doaj   +1 more source