| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Nowicki, Marek
Adam Mickiewicz University in Poznań
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2023Metallodendrimers Unveiled: Investigating the Formation and Features of Double-Decker Silsesquioxane-Based Silylferrocene Dendrimerscitations
- 2022Novel Mesoporous Organosilicas with Task Ionic Liquids: Properties and High Adsorption Performance for Pb(II)citations
- 2019Recovery from bone loss, diminished mineral density and strength in mice after treatment with steroidal and nonsteroidal anti-inflammatory drugs by injection of exosomes enriched with agomir miRNAs
- 2018Polydopamine grafted on an advanced Fe <inf>3</inf> O <inf>4</inf> /lignin hybrid material and its evaluation in biosensingcitations
- 2018Characterization of polymer inclusion membranes (PIM) containing phosphonium ionic liquids and their application for separation of Zn(II) from Fe(III)citations
- 2017Lipase B from candida Antarctica immobilized on a silica-lignin matrix as a stable and reusable biocatalytic systemcitations
- 2015Chemical etching of stainless steel 301 for improving performance of electrochemical capacitors in aqueous electrolytecitations
- 2015Synergistic effect of modified natural fibres with halogen-free fire retardants in reducing flammability of compositescitations
- 2014Morphology and magnetic properties of Fe<inf>3</inf>O<inf>4</inf>-alginic acid nanocomposites
- 2013Synthesis and characterization of modified cellulose acetate propionate nanocomposites via sol-gel processcitations
- 2013Cellulose acetate butyrate nanocomposites synthesized via sol-gel methodcitations
- 2008A nanoindentation study of photo-induced changes in polymers containing azobenzenecitations
- 2006Nanomechanical measurements on glutamine molecularly imprinted nylon filmscitations
- 2003Nanoscale mechanical properties of polymers irradiated by UVcitations
- 2002Polymer studies using Atomic Force Microscopy (AFM). Part I. Principles of AFM and its application in polymer morphology investigationscitations
- 2000Effect of heat treatment on phase behaviour and molecular dynamics of mineral-filled PPScitations
Places of action
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article
A nanoindentation study of photo-induced changes in polymers containing azobenzene
Abstract
<p>Irradiation of materials by light of suitable photon energy can cause structural alterations of either permanent or temporary character that are reflected in their mechanical properties. Nanoindentation is particularly well suited to characterise small representative volume elements of materials with gradual or discrete changes of their mechanical properties. It is, therefore, an ideal technique for investigation of thin films, nanocomposites and other specimens with inhomogeneities in the nanometer to micrometer length scale that are either inherently existing in the material or externally stimulated. In this article, nanoindentation was applied to study the mechanical properties of pDR1 m surface relief gratings containing azobenzene. Hardness and elastic modulus increase after and during irradiation of the pDR1 m film correlated with an increase in the polymer density after light exposure. Permanent structural changes in the pDR1 m film are related to crosslinking and photo-isomerisation. In-situ nanoindentation under controlled periodic light illumination exhibits a week photomechanical switching and results finally in a permanent stiffer polymer network.</p>