Results 21 to 30 of about 205 (138)
Cyclo-Octasulfur Crystals as Light-Controlled Molecular Muscles. [PDF]
Angew Chem Int Ed EnglBending and stretching effect provoked by the repeated application of 385‐nm radiation (purple) and 475‐nm radiation (blue) on sulfur microcrystals. Abstract Here, we describe the synthesis and photo‐responsive properties of 2D cyclo‐octasulfur microcrystals (α‐S8 MCs), produced using a quick, simple, cost‐effective, and environmentally friendly ...
Solano-Rodríguez E +5 more
europepmc +3 more sources
ON BIAXIALITY OF PHOTOINDUCED STRUCTURES IN AZOPOLYMER FILMS [PDF]
Condensed Matter Physics, 2001 Spatial orientational structures in the layers of liquid crystalline polymalonates are investigated using UV absorption method and the results of the null ellipsometry technique. Preferential in-plane alignment of azobenzene fragments and in-plane reorientation under irradiation with polarized UV light are established.
Kiselev, A. +3 more
openaire +2 more sources
A short review of the photomechanical effect in azo-containing amorphous (glassy) polymers
eXPRESS Polymer Letters, 2021 The photomechanical effect has been studied so far mainly in elastomers, but recently more and more publications, in which this effect is studied for other materials too, so-called glassy or amorphous polymers (in particular polyimides), have appeared ...
J. Konieczkowska +2 more
doaj +1 more source
Biomimetic Adhesion/Detachment Using Layered Polymers with Light-Induced Rapid Shape Changes. [PDF]
Angew Chem Int Ed EnglGeckos achieve rapid adhesion and detachment through their hierarchically structured toe pads. Inspired by this, we developed a crosslinked polymer film with a nanoscale layered structure that undergoes high‐speed, reversible expansion, and contraction under UV light.
Yue Y, Norikane Y, Nishibori E.
europepmc +3 more sources
Optical storage properties in cast films of an azopolymer
Materials Research, 2003 In this paper we discuss the properties of optically induced birefringence in DR19-MDI cast films that may be used in optical storage applications. The selection of DR19-MDI cast films was based on a comparative study of optical storage properties of ...
Ubaldo Martins das Neves +7 more
doaj +1 more source
Photoinduced birefringence in azopolymers measured at 1550 nm [PDF]
EPJ Web of ConferencesAzobenzenes are a class of compounds presenting photoisomerization capabilities that allow the writing and erasure of birefringence along a desired direction.
Soares Beatriz +3 more
doaj +1 more source
From nanoscopic to macroscopic photo-driven motion in azobenzene-containing materials
Nanophotonics, 2018 The illumination of azobenzene molecules with UV/visible light efficiently converts the molecules between trans and cis isomerization states. Isomerization is accompanied by a large photo-induced molecular motion, which is able to significantly affect ...
Oscurato Stefano L. +3 more
doaj +1 more source
Modeling Light‐Induced Synaptic Behavior and Visual Memory of Azopolymeric Compounds
Advanced Optical Materials, Volume 14, Issue 29, 7 August 2026.In the framework of neuromorphic hardware it is essential to predict the evolution of the internal state of the devices mimicking synaptic functionalities to perform in‐silico modeling of specific computational tasks. Here, we provide a rate‐balance equation model to describe the synaptic‐like response of light‐actuated azopolymeric compounds and ...
Mateo Rosero‐Realpe +3 more
wiley +1 more source
Electro– and photosensitive azopolymer for alignment of liquid crystals
Optics Express, 2015 We report an electro- and photosensitive metal containing polymer material for alignment of liquid crystals (LCs). Irradiation with polarized light and/or application of dc-field result in an anisotropy of the polymer and formation of an easy orientation axes of a LC on the polymer surface.
Denis, Kasyanyuk +4 more
openaire +2 more sources
Pixelated Laser with Tailored Emission Spectrum Photopatterned by Digital Holographic Microscopy
Advanced Optical Materials, Volume 14, Issue 17, 8 May 2026.Azobenzene‐based surface‐relief gratings inscribed via DHM‐integrated holographic lithography enable programmable pixelated DFB laser architectures. This approach allows independent control of grating parameters across a 2D array, enabling spatially tailored emission spectra.
Sudharsana Bhashyam Pillailokam +2 more
wiley +1 more source