Next Article in Journal
Increased Adipogenic and Decreased Chondrogenic Differentiation of Adipose Derived Stem Cells on Nanowire Surfaces
Next Article in Special Issue
Preparation of Nanocomposite Plasmonic Films Made from Cellulose Nanocrystals or Mesoporous Silica Decorated with Unidirectionally Aligned Gold Nanorods
Previous Article in Journal
Bismuth Telluride and Its Alloys as Materials for Thermoelectric Generation
Previous Article in Special Issue
Passive Temperature Stabilization of Silicon Photonic Devices Using Liquid Crystals
Open AccessArticle

Liquid Crystal Lensacons, Logarithmic and Linear Axicons

Electronic Technology Department, Carlos III University of Madrid, Butarque 15, E28911, Madrid, Spain
Author to whom correspondence should be addressed.
Materials 2014, 7(4), 2593-2604;
Received: 21 February 2014 / Revised: 12 March 2014 / Accepted: 24 March 2014 / Published: 28 March 2014
(This article belongs to the Special Issue Liquid Crystals)
Until now, several attempts have been made to obtain axicons by using liquid crystals. Previous results had always a considerable deviation from the linear response and the resulting aperture is square. In addition, classical fabrications methods are expensive and only produce fixed phase profiles. In this study, a novel structure to obtain tunable axicons with a perfect conical shape and a circular aperture is proposed and theoretically studied. The proposed optical device is based on nematic liquid crystal and phase shifted electrical signals. A simulation program consisted of Finite Elements Method to solve the voltage distribution combined with the Frank-Oseen equation to solve the molecular position of the nematic liquid crystal is employed. This device is totally reconfigurable by using low voltage signals. The focus depth and the position of this one can be controlled electrically. View Full-Text
Keywords: axicons; liquid crystal devices; optical trapping axicons; liquid crystal devices; optical trapping
MDPI and ACS Style

Algorri, J.F.; Urruchi, V.; García-Cámara, B.; Sánchez-Pena, J.M. Liquid Crystal Lensacons, Logarithmic and Linear Axicons. Materials 2014, 7, 2593-2604.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

Only visits after 24 November 2015 are recorded.
Back to TopTop