Pregled bibliografske jedinice broj: 815956
Micropatterning of light-sensitive liquid-crystal elastomers
Micropatterning of light-sensitive liquid-crystal elastomers // Physical Review E, 80 (2009), 5; 050701-1 doi:10.1103/PhysRevE.80.050701 (međunarodna recenzija, članak, znanstveni)
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Naslov
Micropatterning of light-sensitive liquid-crystal elastomers
Autori
Devetak, Miha ; Zupančić, Blaž ; Lebar, Andrija ; Umek, Polona ; Zalar, Boštjan ; Domenici, Valentina ; Ambrožić, Gabriela ; Žigon, Majda ; Čopič, Martin ; Drevenšek-Olenik, Irena
Izvornik
Physical Review E (1539-3755) 80
(2009), 5;
050701-1
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
elastomers ; holographic gratings ; isomerisation ; liquid crystal phase transformations ; nematic liquid crystals ; photochemistry ; thin films
Sažetak
We demonstrate that photoisomerizable liquid-crystal elastomer soft films can be used as tunable holographic gratings. Optomechanical mechanism of imprinting one-dimensional grating structure into the soft matrix by two-beam uv laser interference can be clearly resolved from the time dependence of the reading beam diffraction patterns. We analyze the observed response in terms of cis-trans isomerization-controlled modulation of the grating profile. The grating period can be tuned reversibly by stretching or contraction of the specimen, either thermomechanically or by applying external stress. Temperature-induced modifications of the grating parameters in the vicinity of the nematic-paranematic phase transition are also examined.
Izvorni jezik
Engleski
Znanstvena područja
Fizika, Kemija
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE
