Photon upconversion with directed emission

K Börjesson, P Rudquist, V Gray… - Nature …, 2016 - nature.com
Photon upconversion has the potential to increase the efficiency of single bandgap solar
cells beyond the Shockley Queisser limit. Efficient light management is an important point in …

Carbon nanotubes in liquid crystals: fundamental properties and applications

L Lisetski, M Soskin, N Lebovka - … : Proceedings, Kyiv, Ukraine, 23-27 May …, 2015 - Springer
The structure and properties of liquid crystalline suspensions filled by carbon nanotubes
(CNTs) are critically reviewed. Special attention is paid to interactions between CNTs and …

Digital optical memory devices based on polymer-dispersed liquid crystals films: appropriate polymer matrix morphology

A Mouquinho, J Figueirinhas, J Sotomayor - Liquid Crystals, 2020 - Taylor & Francis
Permanent memory effect (PME) in polymer dispersed liquid crystal (PDLC) allows a greater
applicability range than traditional PDLCs. One of the most interesting application could be …

Pre-Polymer Chain Length: Influence on Permanent Memory Effect of PDLC Devices

A Mouquinho, MT Barros, J Sotomayor - Crystals, 2024 - mdpi.com
This study delved into the correlation between the chain length of PEG polymerizable
oligomers and the electro-optical properties exhibited by the resultant PDLC films. A range …

Confinement and surface effects on the molecular dynamics of a nematic mixture investigated by dielectric relaxation spectroscopy

AR Brás, M Dionísio, A Schönhals - The Journal of Physical …, 2008 - ACS Publications
Broadband dielectric spectroscopy (10− 2− 109 Hz) was employed to investigate the
molecular dynamics of the liquid crystalline mixture E7 confined in both untreated and …

Molecular mobility of nematic E7 confined to molecular sieves with a low filling degree

AR Brás, S Frunza, L Guerreiro, IM Fonseca… - The Journal of …, 2010 - pubs.aip.org
The nematic liquid crystalline mixture E7 was confined with similar filling degrees to
molecular sieves with constant composition but different pore diameters (from 2.8 to 6.8 nm) …

Films based on new methacrylate monomers: synthesis, characterisation and electro-optical properties

A Mouquinho, M Saavedra, A Maiau… - … Crystals and Liquid …, 2011 - Taylor & Francis
A number of liquid crystal monomers based on methacrylate derivatives were synthesised
by novel mild and solventless procedures under microwave irradiation. Their photo-and …

Color–Tunable Triple–State “Smart” Window

GH Timmermans, J Wu… - Advanced Photonics …, 2021 - Wiley Online Library
Materials that rapidly change their optical properties in response to external stimuli are
crucial for displays and “smart” window applications. Herein, a fluorescent red dye modified …

The Impact of Curing Temperature and UV Light Intensity on the Performance of Polymer-Dispersed Liquid Crystal Devices Exhibiting a Permanent Memory Effect

A Mouquinho, J Sotomayor - Crystals, 2024 - mdpi.com
PDLC films, synthesized via polymerization-induced phase separation (PIPS) utilizing both
temperature and UV monochromatic radiation, were derived from a blend of E7 nematic …

Electro‐Steering Tapered Fiber‐Optic Device with Liquid Crystal Cladding

J Korec, KA Stasiewicz, O Strzeżysz, P Kula… - Journal of …, 2019 - Wiley Online Library
The paper presents the results of design, manufacturing, and characterization of a hybrid
broad band in‐line fiber‐optic device. It uses nematic liquid crystal as cladding with electro …