Article
Materials Science, Ceramics
Sean Locker, Jennifer A. Clark, S. K. Sundaram
Summary: Femtosecond pulse laser radiation on alkali and alkaline earth modified soda-lime silicate glasses leads to densification on the surface, with the degree of density changes depending on pulse energy and glass-network connectivity. Raman spectroscopy study confirms the role of modifier ions in affecting the structural rigidity and disorder degree of the glass.
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
(2021)
Article
Materials Science, Coatings & Films
Tie Li, Yang Guo, Masayoshi Mizutani, Shaolin Xu
Summary: In this paper, a method using femtosecond laser double-pulse irradiation is proposed to smooth the surface of Zr-based BMG without inducing laser-induced periodic surface structures and crystallization. The optimized parameters include a first laser pulse energy of 0.06 mu J, an energy ratio of 40% between the first and second pulses, and a time delay of 20 ps. By applying this method, a significant decrease in surface roughness is achieved, demonstrating the feasibility of this approach in BMGs polishing.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Nicholas J. Tostanoski, Edwin J. Heilweil, Peter F. Wachtel, J. David Musgraves, S. K. Sundaram
Summary: In this study, the structure-terahertz (THz) property relationship of various non-oxide chalcogenide glasses, including unary, binary, and ternary systems, was investigated. Raman spectroscopy was used to examine the glass structure, while terahertz time-domain spectroscopy (THz-TDS) was used to measure the THz refractive index. The study found that vitreous selenium had the lowest THz refractive index value, followed by arsenic sulfide and arsenic selenide glasses. Germanium selenide glasses showed an increased THz refractive index with increasing germanium content. A correlation between long-wave infrared and THz refractive index was also presented for all studied chalcogenide glasses, which is useful for designing integrated optical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Review
Optics
Guangrui Mao, Feifei Chen, Wenfeng Wang, Ziliang Li, Chengtao Jia, Yongxing Liu, Baoan Song, Changgui Lin, Ying Xie, Tiefeng Xu
Summary: The composition dependent photostability of chalcogenide thinfilms within a germanium-sulfur binary system was investigated using femtosecond laser irradiation. The presence of [GeS6] octahedra was found to be the key factor influencing the photostability of the films. A GeS1.5 film with equal amounts of [GeS6] octahedra and [GeS4] tetrahedra exhibited the highest fs-laser stability, making it a promising substrate for high pumping power micro-nano nonlinear photonic devices.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mason L. L. Valentine, Guoxin Yin, Julius J. J. Oppenheim, Mircea Dinca, Wei Xiong
Summary: We investigated the water H-bond network and its dynamics in Ni2Cl2BTDD using linear and ultrafast IR spectroscopy. We found that water forms an extensive H-bonding network in Ni2Cl2BTDD, which can rearrange within a confined cone up to 50 degrees within 1.3 ps. This reorientation indicates H-bond rearrangement, similar to bulk water. The picosecond H-bond rearrangement in Ni2Cl2BTDD supports its reversibility in water sorption.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
S. Katsiaounis, N. Chourdakis, E. Michail, M. Fakis, I Polyzos, J. Parthenios, K. Papagelis
Summary: In this work, we introduce an experimental protocol to engineer nanometer scale pores in CVD graphene membranes under ambient conditions, using low power ultra-short laser pulses and overcoming the drawbacks of other perforation techniques. We visualized and quantified the nanopore network using Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM), while Raman spectroscopy is utilized to correlate the nano-perforated area with the nanotopographic imaging. Our results suggest that Raman imaging provides the identification of nanoporous area and, in combination with AFM, we provide solid evidence for the reproducibility of the method, as nanopores of a certain size distribution are formed under these experimental conditions.
Article
Multidisciplinary Sciences
Alena K. Bell, Jonas Kind, Maximilian Hartmann, Benjamin Kresse, Mark V. Hoefler, Benedikt B. Straub, Guenter K. Auernhammer, Michael Vogel, Christina M. Thiele, Robert W. Stark
Summary: Understanding the evaporation process of binary sessile droplets is crucial for optimizing technical processes. This study employs confocal Raman microscopy and spatially resolved NMR spectroscopy to measure the concentration gradients in evaporating droplets on a hydrophobic surface.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Materials Science, Multidisciplinary
Patrice Umenne
Summary: In this article, narrow constrictions in the micron and sub-micron range are fabricated on superconducting YBa2Cu3O7 thin films using a femtosecond laser and scanned with an atomic force microscope (AFM). AFM images of the fabricated constrictions are shown, with widths ranging from 1.24 μm to 812 nm. The laser ablation spot size is set at 15.8 μm, and the separation distance between centers of laser ablation spots varies between (16-17) μm, resulting in variable constriction widths for different superconductive bridges. The AFM images provide surface morphology, dimensions, and physical continuity of the fabricated constriction qubits. The electrical continuity and superconductivity of the fabricated constrictions are validated through measurement of their I-V characteristics.
Article
Materials Science, Ceramics
J-M Delaye, A. Le Gac, S. Macaluso, F. Angeli, F. Lodesani, T. Charpentier, S. Peuget
Summary: The study focused on structural modifications in alumino-silicate glasses as CaO replaces Na2O and Al2O3 replaces SiO2, as well as the impact of increasing Al2O3 content. Results showed that Al is always 4-coordinated, and the number of Al-O-Al bonds increases with higher Al2O3 or CaO content. The study also confirmed the attribution of Raman bands to specific bonding configurations, and demonstrated the effectiveness of classical molecular dynamics potentials in replicating experimental results.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Geochemistry & Geophysics
H. W. Nesbitt, G. S. Henderson, G. M. Bancroft, D. R. Neuville
Summary: By conducting Si-29 NMR experimental studies on glasses, the abundances of Q species can be accurately determined, allowing for the establishment of Raman Q(3) and Q(2) cross sections for specific compositions. The Q(2) band in the Raman spectrum is Lorentzian in shape, while the Q(3) band is asymmetric, with increasing asymmetry correlated with higher alkali content due to alkali-BO interactions. This increase in alkali content weakens Si-O coulombic interactions, leading to asymmetric Q(3) line shapes. With these cross sections established, Raman spectroscopy can now provide highly accurate estimates of Q species in silicate glasses and melts.
Article
Archaeology
Evan Maina Maingi, Maria Pilar Alonso, German F. de la Fuente, Stephan Dubernet, Yannick Lefrais, Remy Chapoulie, Elodie Vally, Luis A. Angurel
Summary: Laser irradiation is used for safe and controlled removal of surface deposits on different materials. In this study, an ultraviolet femtosecond pulsed laser was used to remove encrustation from a stained-glass sample, while preserving the underlying layers. The laser cleaning process proved to be effective without damaging the glass surface.
JOURNAL OF CULTURAL HERITAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Zdenek Cernosek, Monika Chladkova, Jana Holubova
Summary: The study found that molybdenum significantly influenced the chemical composition of phosphate glasses prepared in different batch compositions, shifting ultraphosphate glass towards the metaphosphate region and other glasses towards lower phosphorus content of pyrophosphates. The results highlighted the stability of the glasses and provided insights into the relationship between chemical composition and properties such as glass transition temperature and coefficient of thermal expansion.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Aleksandr Kolchin, Dmitrii Shuleiko, Mikhail Martyshov, Aleksandra Efimova, Leonid Golovan, Denis Presnov, Tatiana Kunkel, Victoriia Glukhenkaya, Petr Lazarenko, Pavel Kashkarov, Stanislav Zabotnov, Sergey Kozyukhin
Summary: This study demonstrates the fabrication of periodic structures with crystallization and anisotropic properties using femtosecond laser treatment on GST225 films. The produced structures exhibit artificial optical and electrophysical anisotropy, enabling potential applications in designing high-density GST225-based memory devices.
Article
Materials Science, Ceramics
J. -M. Delaye, A. Le Gac, S. Macaluso, F. Angeli, F. Lodesani, T. Charpentier, S. Peuget
Summary: A set of SiO2-Al2O3-Na2O-CaO glasses with varying Si/Al and Na/Ca ratios was experimentally irradiated with Au4+ ions at 7.3MeV. Depending on the glass composition, the density could increase or decrease. Through simulations and experimental comparisons, a phenomenological density change model was proposed to explain the observations.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Natalia Sanchez-Arribas, Pablo Diaz-Nunez, Jose Osio Barcina, Emilio Aicart, Elena Junquera, Andres Guerrero-Martinez
Summary: This study demonstrates that the use of AuNSs combined with gemini cationic lipoplexes allows control over pDNA release under ultrafast laser irradiation, showing potential for efficient gene therapy applications.
Review
Environmental Sciences
Herbert Legall, Joern Bonse, Joerg Krueger
Summary: Ultra-short laser pulse processing enables high precision and high throughput material machining, but may generate hazardous X-ray radiation. At high laser repetition rates, the X-ray dose can pose health risks, necessitating the consideration of radiation protection measures.
JOURNAL OF RADIOLOGICAL PROTECTION
(2021)
Article
Engineering, Mechanical
J. J. Ayerdi, A. Aginagalde, I Llavori, J. Bonse, D. Spaltmann, A. Zabala
Summary: This study provides a critical assessment of wear volume determination methods for ball-on-flat linear reciprocating sliding tribological tests, highlighting the potential errors associated with the ASTM D7755-11 standard and the lack of complete procedural information in commonly used methods. The study also reveals a lack of explicit reporting of wear computation methods in the literature, emphasizing the importance of correct selection, implementation, and reporting of wear volume computation methods.
Article
Chemistry, Physical
Camilo Florian, Daniel Fischer, Katharina Freiberg, Matthias Duwe, Mario Sahre, Stefan Schneider, Andreas Hertwig, Joerg Krueger, Markus Rettenmayr, Uwe Beck, Andreas Undisz, Joern Bonse
Summary: Superficial amorphization and re-crystallization of silicon after irradiation by femtosecond laser pulses were studied using optical imaging and transmission electron microscopy. The thickness and shape of the amorphous layer on the surface of silicon were quantitatively determined through techniques like SIE and HRTEM. Experimental verification of the calculations was conducted, providing a comprehensive picture of the process of superficial re-solidification of silicon after local melting by femtosecond laser pulses.
Editorial Material
Chemistry, Multidisciplinary
Peter Simon, Juergen Ihlemann, Joern Bonse
Article
Chemistry, Multidisciplinary
Luis Porta-Velilla, Neslihan Turan, Alvaro Cubero, Wei Shao, Hongtao Li, German F. de la Fuente, Elena Martinez, Angel Larrea, Miguel Castro, Haluk Koralay, Sukru Cavdar, Joern Bonse, Luis A. Angurel
Summary: This study investigates the surface nanostructures and microstructures formed on nickel tungsten alloy tapes under ultraviolet laser processing. The impact of material initial grain orientation on the induced surface structures is explored. Electron-based techniques are employed to characterize the surface morphology, and it is found that the formation of surface structures is significantly affected by the material's initial grain orientation.
Article
Materials Science, Multidisciplinary
Jorn Bonse, Jorg Kruger
Summary: Modern life and global communication heavily rely on technologically tailored thin films, which are widely used in daily applications. In some cases, local removal or modification of the films is necessary, and ultrashort laser pulses with femtosecond and picosecond durations offer unique advantages in industrial-scale schemes. This article reviews the current state of research and industrial transfer in the structuring of thin films using ultrashort pulsed lasers, exploring historic developments, physical and chemical effects, ultimate limits, and selected applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Sebastian Lifka, Kristof Harsanyi, Erich Baumgartner, Lukas Pichler, Dariya Baiko, Karsten Wasmuth, Johannes Heitz, Marco Meyer, Anna-Christin Joel, Joern Bonse, Werner Baumgartner
Summary: This study presents a theoretical model of the interaction between linear nanofibers and sinusoidally corrugated surfaces. Using ultrashort pulse laser processing, a technical analog of nanoripples was produced on metal surfaces, which significantly reduced the adhesion of electrospun nanofiber nonwovens compared to polished surfaces.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Editorial Material
Chemistry, Physical
Joerg Krueger, Joern Bonse
Article
Chemistry, Physical
Katrin Boettcher, Mayka Schmitt Rahner, Ulf Stolzenberg, Sebastian Kraft, Joern Bonse, Carsten Feist, Daniel Albrecht, Bjoern Pullner, Joerg Krueger
Summary: Spectral X-ray emissions were investigated during ultrashort pulse laser processing of tungsten and steel. It was found that burst mode laser processing significantly increases dose rates and X-ray photon energies.
Editorial Material
Chemistry, Multidisciplinary
Florenta Costache, Stephane Valette, Joern Bonse
Article
Materials Science, Multidisciplinary
Sebastian Kraft, Joerg Schille, Joern Bonse, Udo Loeschner, Joerg Krueger
Summary: Ablative laser processing with ultrashort pulsed laser beams can cause secondary emission of hazardous X-rays. However, the X-ray emission rates during ablative processing of biological tissue materials have not been widely explored. In this study, biological materials were ablated with ultrashort laser pulses and in-situ X-ray dose rate measurements were performed. The results showed the secondary emission of laser-induced X-rays in all the studied biological materials.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Chemistry, Physical
M. Wolff, R. Wonneberger, K. E. Freiberg, A. Hertwig, J. Bonse, L. Giebeler, A. Koitzsch, C. Kunz, H. Weber, J. K. Hufenbach, F. A. Mueller, S. Graef
Summary: This study investigates the formation of femtosecond laser-induced periodic surface structures on different compositions of BMGs. The results show that despite the different chemical compositions, the generated surface patterns by laser irradiation exhibit similar properties.
SURFACES AND INTERFACES
(2023)
Article
Optics
Luis Porta-Velilla, Elena Martinez, Alejandro Frechilla, Miguel Castro, German Francisco de la Fuente, Joern Bonse, Luis Alberto Angurel
Summary: The study investigates the formation of laser-induced periodic surface structures (LIPSS) on stainless steel surfaces. By optimizing processing parameters and varying laser incidence angles and polarizations, different ripple surface morphologies are generated on distinct grains. The crystallographic orientation of the grains has a significant impact on LIPSS formation, and multi-step processes are suggested to improve their manufacturing.
LASER & PHOTONICS REVIEWS
(2023)
Review
Optics
Karin Schwibbert, Anja M. Richter, Joerg Krueger, Joern Bonse
Summary: Bacterial biofilms pose challenges in medical and industrial settings, with increasing resistance against biocides. Laser-texturing surfaces offers a promising bacteria-repellent strategy without the use of chemicals or antibiotics. This article reviews laser-surface subtractive texturing approaches and discusses challenges and future directions.
LASER & PHOTONICS REVIEWS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Camilo Florian, Jean-Luc Deziel, Sabrina Kirner, Jan Siegel, Joern Bonse
Summary: Micro- and nanostructuring with laser-induced periodic surface structures (LIPSS) has been proven feasible in various materials, creating diverse applications in fields such as optics, tribology, and medicine. However, a common side effect in air environment is the formation of a thin surface oxide layer. This study experimentally explores the effect of laser-induced oxide graded layers on the formation of low-spatial frequency LIPSS in chromium nitride (CrN).
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
