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Title: Alignment engineering in liquid crystalline elastomers: Free-form microstructures with multiple functionalities

Abstract

We report a method to fabricate polymer microstructures with local control over the molecular orientation. Alignment control is achieved on molecular level in a structure of arbitrary form that can be from 1 to 100 μm in size, by fixing the local boundary conditions with micro-grating patterns. The method makes use of two-photon polymerization (Direct Laser Writing) and is demonstrated specifically in liquid-crystalline elastomers. This concept allows for the realization of free-form polymeric structures with multiple functionalities which are not possible to realize with existing techniques and which can be locally controlled by light in the micrometer scale.

Authors:
; ;  [1];  [1];  [2];  [1];  [3];  [1];  [3]
  1. European Laboratory for Non Linear Spectroscopy (LENS), University of Florence, via Nello Carrara 1, 50019 Sesto Fiorentino (Italy)
  2. (Poland)
  3. (Italy)
Publication Date:
OSTI Identifier:
22395751
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALIGNMENT; BOUNDARY CONDITIONS; ELASTOMERS; LIQUID CRYSTALS; MICROSTRUCTURE; ORIENTATION; PHOTONS; POLYMERIZATION; VISIBLE RADIATION

Citation Formats

Zeng, Hao, Cerretti, Giacomo, Wiersma, Diederik S., E-mail: camilla.parmeggiani@lens.unifi.it, E-mail: wiersma@lens.unifi.it, Wasylczyk, Piotr, Faculty of Physics, Institute of Experimental Physics, University of Warsaw, ul. Hoza 69, Warszawa 00-681, Martella, Daniele, Dipartimento di Chimica “Ugo Schiff,” University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Parmeggiani, Camilla, E-mail: camilla.parmeggiani@lens.unifi.it, E-mail: wiersma@lens.unifi.it, and CNR-INO, via Nello Carrara 1, 50019 Sesto Fiorentino. Alignment engineering in liquid crystalline elastomers: Free-form microstructures with multiple functionalities. United States: N. p., 2015. Web. doi:10.1063/1.4915268.
Zeng, Hao, Cerretti, Giacomo, Wiersma, Diederik S., E-mail: camilla.parmeggiani@lens.unifi.it, E-mail: wiersma@lens.unifi.it, Wasylczyk, Piotr, Faculty of Physics, Institute of Experimental Physics, University of Warsaw, ul. Hoza 69, Warszawa 00-681, Martella, Daniele, Dipartimento di Chimica “Ugo Schiff,” University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Parmeggiani, Camilla, E-mail: camilla.parmeggiani@lens.unifi.it, E-mail: wiersma@lens.unifi.it, & CNR-INO, via Nello Carrara 1, 50019 Sesto Fiorentino. Alignment engineering in liquid crystalline elastomers: Free-form microstructures with multiple functionalities. United States. doi:10.1063/1.4915268.
Zeng, Hao, Cerretti, Giacomo, Wiersma, Diederik S., E-mail: camilla.parmeggiani@lens.unifi.it, E-mail: wiersma@lens.unifi.it, Wasylczyk, Piotr, Faculty of Physics, Institute of Experimental Physics, University of Warsaw, ul. Hoza 69, Warszawa 00-681, Martella, Daniele, Dipartimento di Chimica “Ugo Schiff,” University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino, Parmeggiani, Camilla, E-mail: camilla.parmeggiani@lens.unifi.it, E-mail: wiersma@lens.unifi.it, and CNR-INO, via Nello Carrara 1, 50019 Sesto Fiorentino. Mon . "Alignment engineering in liquid crystalline elastomers: Free-form microstructures with multiple functionalities". United States. doi:10.1063/1.4915268.
@article{osti_22395751,
title = {Alignment engineering in liquid crystalline elastomers: Free-form microstructures with multiple functionalities},
author = {Zeng, Hao and Cerretti, Giacomo and Wiersma, Diederik S., E-mail: camilla.parmeggiani@lens.unifi.it, E-mail: wiersma@lens.unifi.it and Wasylczyk, Piotr and Faculty of Physics, Institute of Experimental Physics, University of Warsaw, ul. Hoza 69, Warszawa 00-681 and Martella, Daniele and Dipartimento di Chimica “Ugo Schiff,” University of Florence, via della Lastruccia 3-13, 50019 Sesto Fiorentino and Parmeggiani, Camilla, E-mail: camilla.parmeggiani@lens.unifi.it, E-mail: wiersma@lens.unifi.it and CNR-INO, via Nello Carrara 1, 50019 Sesto Fiorentino},
abstractNote = {We report a method to fabricate polymer microstructures with local control over the molecular orientation. Alignment control is achieved on molecular level in a structure of arbitrary form that can be from 1 to 100 μm in size, by fixing the local boundary conditions with micro-grating patterns. The method makes use of two-photon polymerization (Direct Laser Writing) and is demonstrated specifically in liquid-crystalline elastomers. This concept allows for the realization of free-form polymeric structures with multiple functionalities which are not possible to realize with existing techniques and which can be locally controlled by light in the micrometer scale.},
doi = {10.1063/1.4915268},
journal = {Applied Physics Letters},
number = 11,
volume = 106,
place = {United States},
year = {Mon Mar 16 00:00:00 EDT 2015},
month = {Mon Mar 16 00:00:00 EDT 2015}
}