These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Optically generated reconfigurable photonic structures of elastic quasiparticles in frustrated cholesteric liquid crystals.
    Author: Smalyukh II, Kaputa D, Kachynski AV, Kuzmin AN, Ackerman PJ, Twombly CW, Lee T, Trivedi RP, Prasad PN.
    Journal: Opt Express; 2012 Mar 26; 20(7):6870-80. PubMed ID: 22453364.
    Abstract:
    We describe laser-induced two-dimensional periodic photonic structures formed by localized particle-like excitations in an untwisted confined cholesteric liquid crystal. The individual particle-like excitations (dubbed "Torons") contain three-dimensional twist of the liquid crystal director matched to the uniform background director field by topological point defects. Using both single-beam-steering and holographic pattern generation approaches, the periodic crystal lattices are tailored by tuning their periodicity, reorienting their crystallographic axes, and introducing defects. Moreover, these lattices can be dynamically reconfigurable: generated, modified, erased and then recreated, depending on the needs of a particular photonic application. This robust control is performed by tightly focused laser beams of power 10-100 mW and by low-frequency electric fields at voltages ~10 V applied to the transparent electrodes.
    [Abstract] [Full Text] [Related] [New Search]