| 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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Houssiau, Laurent
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2024Photoluminescence of Germanium-Vacancy Centers in Nanocrystalline Diamond Films: Implications for Quantum Sensing Applicationscitations
- 2024Fluorocarbon Plasma-Polymerized Layer Increases the Release Time of Silver Ions and the Antibacterial Activity of Silver-Based Coatingscitations
- 2024Photoluminescence of Germanium-Vacancy Centers in Nanocrystalline Diamond Films:Implications for Quantum Sensing Applicationscitations
- 2023Secondary ion mass spectrometry, a powerful tool for revealing ink formulations and animal skins in medieval manuscriptscitations
- 2022Low-pressure plasma process for the dry synthesis of cactus-like Au-TiO2 nanocatalysts for toluene degradationcitations
- 2022Low-pressure plasma process for the dry synthesis of cactus-like Au-TiO 2 nanocatalysts for toluene degradationcitations
- 2021Compositional, structural, morphological, and optical properties of ZnO thin films prepared by PECVD techniquecitations
- 2021Ion Implantation as an Approach for Structural Modifications and Functionalization of Ti 3 C 2 T x MXenescitations
- 2021Ion Implantation Induced Structural Modifications and Functionalization of Ti 3 C 2 T x MXenes
- 2021Laser Ablation of Titanium Alloy (Ti64): Effects of Process Parameters on Performance of Laser Welded Ti64 – Polyamide 6.6 Joints.citations
- 2021On the adhesion of diamond-like carbon coatings deposited by low-pressure plasma on 316L stainless steelcitations
- 2020Laser joining of titanium alloy to polyamide:influence of process parameters on the joint strength and qualitycitations
- 2020Highlighting chemical bonding between nylon-6.6 and the native oxide from an aluminum sheet assembled by laser weldingcitations
- 2020Laser joining of titanium alloy to polyamide: influence of process parameters on the joint strength and qualitycitations
- 2019Hybrid perovskites depth profiling with variable-size argon clusters and monatomic ions beamscitations
- 2019Surface modification and direct plasma amination of L605 CoCr alloys:on the optimization of the oxide layer for application in cardiovascular implantscitations
- 2019Carbon-based lanthanum nickelate material La2−x−yNdxPryNiO4+δ (x = 0, 0.3, and 0.5; y = 0 and 0.2) as a bifunctional electrocatalyst for oxygen reduction in alkaline mediacitations
- 2019Influence of Aluminum Laser Ablation on Interfacial Thermal Transfer and Joint Quality of Laser Welded Aluminum–Polyamide Assembliescitations
- 2019Depth Profiling of Organic Light-Emitting Diodes by ToF-SIMS Coupled with Wavelet–Principal Component Analysiscitations
- 2019Carbon-based lanthanum nickelate material La 2−x−y Nd x Pr y NiO 4+δ (x = 0, 0.3, and 0.5; y = 0 and 0.2) as a bifunctional electrocatalyst for oxygen reduction in alkaline mediacitations
- 2019In-depth investigation of the charge extraction efficiency for thermally annealed inverted bulk-heterojunction solar cellscitations
- 2019Defective Pt–Ni/graphene nanomaterials by simultaneous or sequential treatments of organometallic precursors by low-pressure oxygen plasmacitations
- 2018Aging effects in interface-engineered perovskite solar cells with 2D nanomaterials:A depth profile analysiscitations
- 2018Combined AFM and ToF-SIMS analyses for the study of filaments in organic resistive switching memoriescitations
- 2018Aluminum pretreatment by a laser ablation process:influence of processing parameters on the joint strength of laser welded aluminum - Polyamide assembliescitations
- 2018Aluminum pretreatment by a laser ablation process: influence of processing parameters on the joint strength of laser welded aluminum – polyamide assembliescitations
- 2014Composite polymeric-inorganic waveguide fabricated by injection molding for biosensing applicationscitations
- 2012Molecular depth profiling of model biological films using low energy monoatomic ionscitations
- 2006A comparative study between inductively and capacitively coupled plasma deposited polystyrene films:Chemical and morphological characterizationscitations
Places of action
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article
Molecular depth profiling of model biological films using low energy monoatomic ions
Abstract
As time-of-flight secondary ion mass spectrometry (ToF-SIMS) is increasingly used to characterize biological samples, fundamental studies on model samples are needed to better understand the interactions between primary ions and biological matter, and to help interpreting the complex ToF-SIMS data. In this work, model biological films were prepared by thermal evaporation and were characterized by XPS and ToF-SIMS. Eight biomolecules were carefully chosen to cover important physical and chemical properties such as aromaticity and oxygen content. The model films allowed studying systematically the sputter rates, ion yields and amenability to molecular depth profiling when using low energy Xe and Cs etching ions. The results show that aliphatic molecules such as cysteine and aspartic acid can be easily depth profiled using low energy monoatomic primary ions. However, aromatic samples such as phenylalanine could only be depth profiled using reactive Cs ions. The systematic study also revealed that the presence of oxygen strongly reduces the deprotonated ion signal during cesium ion bombardment. Finally, model multilayer structures were depth profiled using 500 eV Xe and Cs primary ions with depth resolutions lower than 10 nm. Isotopic variations of the same biomolecule were used for the first time to create multilayers structures with constant ion yields and etching rates.