Search results for "Surface pattern"

showing 3 items of 3 documents

Nanostructured molecular surfaces: advances in investigation and patterning tools

2009

This feature article is aimed to showcase advanced soft and radiationless nanotools for the morphological characterization and for the preparation/modification of molecular surfaces, namely solid supported ultrathin films not exceeding 1–2 molecular layers. As to the characterization, the development of dynamic scanning force microscopy in attractive regime is presented as an important progress at least as far as it concerns imaging of nanoscale features of molecular surfaces with minimal probe–sample physical interaction. To date, this tool has been applied only by a few groups in spite of its larger resolution and image quality than the conventional scanning probe methods. As to the prepa…

FabricationNanostructurenanotechnologyChemistryResolution (electron density)surface patterningNanotechnologyGeneral ChemistryCharacterization (materials science)molecular surfaceMaterials ChemistrySelf-assemblyMolecular probeNanoscopic scaleLithographyJournal of Materials Chemistry
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Surface pattern recording in Sb2Se3 thin films

2013

Abstract Results on the modification of Sb 2 Se 3 thin film surface topology by irradiation followed by wet-etching are given. Comparison of study results revealed the possible role of purely electronic and thermal processes in the relief formation. The latter is supposed to be connected with radiation-induced defect creation, free volume increase under the increased fluidity conditions as well as with the possible additional influence of electrostatic forces and stress. Changes in surface characteristics are presented and potential applications of this treatment are discussed.

Materials scienceAtomic force microscopybusiness.industryCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsSurface patternElectron beam irradiationStress (mechanics)OpticsVolume (thermodynamics)ThermalMaterials ChemistryCeramics and CompositesIrradiationThin filmComposite materialbusinessJournal of Non-Crystalline Solids
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Supramolecular hierarchy among halogen and hydrogen bond donors in light-induced surface patterning

2015

Halogen bonding, a noncovalent interaction possessing several unique features compared to the more familiar hydrogen bonding, is emerging as a powerful tool in functional materials design. Herein, we unambiguously show that one of these characteristic features, namely high directionality, renders halogen bonding the interaction of choice when developing azobenzene-containing supramolecular polymers for light-induced surface patterning. The study is conducted by using an extensive library of azobenzene molecules that differ only in terms of the bond-donor unit. We introduce a new tetrafluorophenol-containing azobenzene photoswitch capable of forming strong hydrogen bonds, and show that an io…

RELIEF GRATINGSDENSITY-FUNCTIONAL THEORY CALCULATIONSMaterials sciencePHOTOINDUCED BIREFRINGENCE116 Chemical sciencesta221Supramolecular chemistryPhotochemistrysupramolecular chemistryDENSITY-FUNCTIONAL THEORYchemistry.chemical_compoundMaterials ChemistryMoleculeTHERMAL-ISOMERIZATIONPOLARIZATION DEPENDENCECO-CRYSTALSLIQUID-CRYSTAL ORDERta218chemistry.chemical_classificationta214Halogen bondta114PhotoswitchHydrogen bondPolymers Halogen Bonding Supramolecular Chemistry Photoresponsive AzobenzeneGeneral Chemistryhydrogen bondingPOLYMER-AZOBENZENE COMPLEXESSupramolecular polymersSOLID-STATEchemistryAzobenzeneHALOGEN BONDINGHalogenlight-induced surface patterningSettore CHIM/07 - Fondamenti Chimici Delle TecnologiePHOTONIC APPLICATIONSPOLYMER-AZOBENZENE COMPLEXES; DENSITY-FUNCTIONAL THEORY; LIQUID-CRYSTAL ORDER; RELIEF GRATINGS; SOLID-STATE; PHOTOINDUCED BIREFRINGENCE; POLARIZATION DEPENDENCE; THERMAL-ISOMERIZATION; PHOTONIC APPLICATIONS; CO-CRYSTALSJournal of Materials Chemistry C
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