1
|
Tateda M, Iida Y, Miyaji G. Enhancement of plasmonic coupling on Si metallized with intense femtosecond laser pulses. Sci Rep 2023; 13:18414. [PMID: 37891205 PMCID: PMC10611748 DOI: 10.1038/s41598-023-45968-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 10/26/2023] [Indexed: 10/29/2023] Open
Abstract
Using a pump-probe technique, the reflectivity of a silicon grating surface irradiated with intense femtosecond (fs) laser pulses was measured as a function of the incidence angle and the delay time between pulses. After irradiating the surface with an intense s-polarized, 400 nm, 300 fs laser pulse, the reflectivity measured with a weak p-polarized, 800 nm, 100 fs laser pulse exhibited an abrupt decrease for an incidence angle of ~ 24°. The depth of the dip was greatest for a delay time of 0.6-10 ps, for which the reflectivity around the dip was highest. The surface was also found to be ablated most strongly for the conditions causing the deepest dip for a delay time of 5-10 ps. Surface plasmon polaritons (SPPs) on silicon metallized by the intense pulse are resonantly excited by the subsequent pulse, and the strong coherent coupling between the subsequent pulse and SPPs excited on the molten Si surface produced by high-density free electrons induces strong surface ablation due to the intense plasmonic near-field. The results clearly show that fs pulses can be used to significantly modulate the nature of nonmetallic materials and could possibly serve as a basic tool for the excitation of SPPs on nonmetallic materials using ultrafast laser-matter interactions.
Collapse
Affiliation(s)
- Mika Tateda
- Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan
| | - Yuto Iida
- Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan.
| | - Godai Miyaji
- Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan.
| |
Collapse
|
2
|
Bock E, Pfleging W, Tada D, Macedo E, Premazzi N, Sá R, Solheid J, Besser H, Andrade A. Laser-Treated Surfaces for VADs: From Inert Titanium to Potential Biofunctional Materials. BME FRONTIERS 2022; 2022:9782562. [PMID: 37850160 PMCID: PMC10521651 DOI: 10.34133/2022/9782562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/17/2022] [Indexed: 10/19/2023] Open
Abstract
Objective. Laser-treated surfaces for ventricular assist devices. Impact Statement. This work has scientific impact since it proposes a biofunctional surface created with laser processing in bioinert titanium. Introduction. Cardiovascular diseases are the world's leading cause of death. An especially debilitating heart disease is congestive heart failure. Among the possible therapies, heart transplantation and mechanical circulatory assistance are the main treatments for its severe form at a more advanced stage. The development of biomaterials for ventricular assist devices is still being carried out. Although polished titanium is currently employed in several devices, its performance could be improved by enhancing the bioactivity of its surface. Methods. Aiming to improve the titanium without using coatings that can be detached, this work presents the formation of laser-induced periodic surface structures with a topology suitable for cell adhesion and neointimal tissue formation. The surface was modified by femtosecond laser ablation and cell adhesion was evaluated in vitro by using fibroblast cells. Results. The results indicate the formation of the desired topology, since the cells showed the appropriate adhesion compared to the control group. Scanning electron microscopy showed several positive characteristics in the cells shape and their surface distribution. The in vitro results obtained with different topologies point that the proposed LIPSS would provide enhanced cell adhesion and proliferation. Conclusion. The laser processes studied can create new interactions in biomaterials already known and improve the performance of biomaterials for use in ventricular assist devices.
Collapse
Affiliation(s)
- Eduardo Bock
- Laboratory of Bioengineering and Biomaterials, Federal Institute of Technology in Sao Paulo (IFSP), Sao PauloBrazil
- Center of Engineering in Circulatory Assistance, Institute Dante Pazzanese of Cardiology (IDPC), Sao Paulo, Brazil
| | - Wilhelm Pfleging
- Institute for Applied Materials-Applied Materials Physics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Dayane Tada
- Federal University of Sao Paulo (UNIFESP), Sao Jose dos Campos, Brazil
| | - Erenilda Macedo
- Federal University of Sao Paulo (UNIFESP), Sao Jose dos Campos, Brazil
| | - Nathalia Premazzi
- Laboratory of Bioengineering and Biomaterials, Federal Institute of Technology in Sao Paulo (IFSP), Sao PauloBrazil
| | - Rosa Sá
- Center of Engineering in Circulatory Assistance, Institute Dante Pazzanese of Cardiology (IDPC), Sao Paulo, Brazil
- National Institute for Space Research (INPE), Sao Jose dos Campos, Brazil
| | - Juliana Solheid
- Institute for Applied Materials-Applied Materials Physics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Heino Besser
- Institute for Applied Materials-Applied Materials Physics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
| | - Aron Andrade
- Center of Engineering in Circulatory Assistance, Institute Dante Pazzanese of Cardiology (IDPC), Sao Paulo, Brazil
| |
Collapse
|
3
|
Vlahou M, Fraggelakis F, Manganas P, Tsibidis GD, Ranella A, Stratakis E. Fabrication of Biomimetic 2D Nanostructures through Irradiation of Stainless Steel Surfaces with Double Femtosecond Pulses. NANOMATERIALS 2022; 12:nano12040623. [PMID: 35214951 PMCID: PMC8876691 DOI: 10.3390/nano12040623] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 02/06/2023]
Abstract
Femtosecond laser induced changes on the topography of stainless steel with double pulses is investigated to reveal the role of parameters such as the fluence, the energy dose and the interpulse delay on the features of the produced patterns. Our results indicate that short pulse separation (Δτ = 5 ps) favors the formation of 2D Low Spatially Frequency Laser Induced Periodic Surface Structures (LSFL) while longer interpulse delays (Δτ = 20 ps) lead to 2D High Spatially Frequency LIPSS (HSFL). The detailed investigation is complemented with an analysis of the produced surface patterns and characterization of their wetting and cell-adhesion properties. A correlation between the surface roughness and the contact angle is presented which confirms that topographies of variable roughness and complexity exhibit different wetting properties. Furthermore, our analysis indicates that patterns with different spatial characteristics demonstrate variable cell adhesion response which suggests that the methodology can be used as a strategy towards the fabrication of tailored surfaces for the development of functional implants.
Collapse
Affiliation(s)
- Matina Vlahou
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology (FORTH), N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Crete, Greece; (M.V.); (P.M.); (G.D.T.); (A.R.)
| | - Fotis Fraggelakis
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology (FORTH), N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Crete, Greece; (M.V.); (P.M.); (G.D.T.); (A.R.)
- Correspondence: (F.F.); (E.S.)
| | - Phanee Manganas
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology (FORTH), N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Crete, Greece; (M.V.); (P.M.); (G.D.T.); (A.R.)
| | - George D. Tsibidis
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology (FORTH), N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Crete, Greece; (M.V.); (P.M.); (G.D.T.); (A.R.)
| | - Anthi Ranella
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology (FORTH), N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Crete, Greece; (M.V.); (P.M.); (G.D.T.); (A.R.)
| | - Emmanuel Stratakis
- Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology (FORTH), N. Plastira 100, Vassilika Vouton, 70013 Heraklion, Crete, Greece; (M.V.); (P.M.); (G.D.T.); (A.R.)
- Department of Physics, University of Crete, 71003 Heraklion, Crete, Greece
- Correspondence: (F.F.); (E.S.)
| |
Collapse
|
4
|
Meinshausen AK, Herbster M, Zwahr C, Soldera M, Müller A, Halle T, Lasagni AF, Bertrand J. Aspect ratio of nano/microstructures determines Staphylococcus aureus adhesion on PET and titanium surfaces. J Appl Microbiol 2021; 131:1498-1514. [PMID: 33565669 DOI: 10.1111/jam.15033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/26/2021] [Accepted: 02/06/2021] [Indexed: 01/09/2023]
Abstract
AIMS Joint infections cause premature implant failure. The avoidance of bacterial colonization of implant materials by modification of the material surface is therefore the focus of current research. In this in vitro study the complex interaction of periodic structures on PET and titanium surfaces on the adhesion of Staphylococcus aureus is analysed. METHODS AND RESULTS Using direct laser interference patterning as well as roll-to-roll hot embossing methods, structured periodic textures of different spatial distance were produced on surfaces and S. aureus were cultured for 24 h on these. The amount of adhering bacteria was quantified using fluorescence microscopy and the local adhesion behaviour was investigated using scanning electron microscopy. For PET structures, minimal bacterial adhesion was identified for an aspect ratio of about 0·02. On titanium structures, S. aureus adhesion was significantly decreased for profile heights of < 200 nm. Our results show a significantly decreased bacterial adhesion for structures with an aspect ratio range of 0·02 to 0·05. CONCLUSIONS We show that structuring on surfaces can decrease the amount of S. aureus on titanium and PET as common implant materials. SIGNIFICANCE AND IMPACT OF THE STUDY The study highlights the immense potential of applying specific structures to implant materials to prevent implant colonization with pathogen bacteria.
Collapse
Affiliation(s)
- A-K Meinshausen
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - M Herbster
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Institute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - C Zwahr
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany
| | - M Soldera
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany
| | - A Müller
- Institute for Molecular and Clinical Immunology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - T Halle
- Institute of Materials and Joining Technology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - A F Lasagni
- Chair of Large Area Laser Based Surface Structuring, Technische Universität Dresden, Dresden, Germany.,Fraunhofer Institute for Material and Beam Technology IWS, Dresden, Germany
| | - J Bertrand
- Department of Orthopedic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| |
Collapse
|
5
|
Two-Dimensional Periodic Nanostructure Fabricated on Titanium by Femtosecond Green Laser. NANOMATERIALS 2020; 10:nano10091820. [PMID: 32932655 PMCID: PMC7559322 DOI: 10.3390/nano10091820] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/04/2020] [Accepted: 09/08/2020] [Indexed: 11/16/2022]
Abstract
Laser-induced periodic surface structures (LIPSS) is the sub-wavelength periodic nanostructure, which is generally generated by the femtosecond laser. There are two kinds of LIPSS, low spatial frequency LIPSS (LSFL) and high spatial LIPSS (HSFL), and the period size is close and less than half of the laser wavelength, respectively. Fabrication of two-dimensional (2D) LSFL and HSFL on a titanium surface with a linear-polarized femtosecond green laser beam (wavelength 515 nm) and cross-scanning strategies is demonstrated in this study. Four types of LIPSS structures are obtained by controlling the laser fluence, irradiated pulses, and cross-scanning strategies: 1D-LSFL perpendicular to laser polarization with a period of 300–360 nm, 1D-HSFL parallel to laser polarization with a period of 55–75 nm, 2D-LSFL dot-like structures with a period ~200 nm, and 2D-HSFL net-like structures with a period of 50–100 nm.
Collapse
|
6
|
Wöbbeking K, Li M, Hübner EG, Schade W. Conical microstructuring of titanium by reactive gas assisted laser texturing. RSC Adv 2019; 9:37598-37607. [PMID: 35542256 PMCID: PMC9075771 DOI: 10.1039/c9ra05918k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/12/2019] [Indexed: 11/21/2022] Open
Abstract
Microstructuring of titanium with high-power laser systems can be controlled by halogens as additives.
Collapse
Affiliation(s)
- Karl Wöbbeking
- Fraunhofer Heinrich Hertz Institute
- Department Fiber Optical Sensor Systems
- DE-38640 Goslar
- Germany
| | - Mingji Li
- Fraunhofer Heinrich Hertz Institute
- Department Fiber Optical Sensor Systems
- DE-38640 Goslar
- Germany
| | - Eike G. Hübner
- Fraunhofer Heinrich Hertz Institute
- Department Fiber Optical Sensor Systems
- DE-38640 Goslar
- Germany
- Clausthal University of Technology
| | - Wolfgang Schade
- Fraunhofer Heinrich Hertz Institute
- Department Fiber Optical Sensor Systems
- DE-38640 Goslar
- Germany
- Clausthal University of Technology
| |
Collapse
|
7
|
Hamad S, Bharati Moram SS, Yendeti B, Podagatlapalli GK, Nageswara Rao SVS, Pathak AP, Mohiddon MA, Soma VR. Femtosecond Laser-Induced, Nanoparticle-Embedded Periodic Surface Structures on Crystalline Silicon for Reproducible and Multi-utility SERS Platforms. ACS OMEGA 2018; 3:18420-18432. [PMID: 31458414 PMCID: PMC6643903 DOI: 10.1021/acsomega.8b02629] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 12/18/2018] [Indexed: 05/09/2023]
Abstract
Fabrication of reproducible and versatile surface-enhanced Raman scattering (SERS) substrates is crucial for real-time applications such as explosive detection for human safety and biological imaging for cancer diagnosis. However, it still remains a challenging task, even after several methodologies were developed by various research groups, primarily due to (a) a lack of consistency in detection of a variety of molecules (b) cost-effectiveness of the SERS substrates prepared, and (c) byzantine preparation procedures, etc. Herein, we establish a procedure for preparing reproducible SERS-active substrates comprised of laser-induced nanoparticle-embedded periodic surface structures (LINEPSS) and metallization of silicon (Si) LINEPSS. LINEPSS were fabricated using the technique of femtosecond laser ablation of Si in acetone. The versatile SERS-active substrates were then achieved by two ways, including the drop casting of silver (Ag)/gold (Au) nanoparticles (NPs) on Si LINEPSS and Ag plating on the Si LINEPSS structures. By controlling the LINEPSS grating periodicity, the effect of plasmonic nanoparticles/plasmonic plating on the Si NPs embedded periodic surface structures enormously improved the SPR strength, resulting in the consistent and superior Raman enhancements. The reproducible SERS signals were achieved by detecting the molecules of Methylene Blue (MB), 2,4-dinitrotoluene (DNT), and 5-amino-3-nitro-l,2,4-triazole (ANTA). The SERS signal strength is determined by the grating periodicity, which, in turn, is determined by the input laser fluence. The SERS-active platform with grating periodicity of 130 ± 10 nm and 150 ± 5 nm exhibited strong Raman enhancements of ∼108 for MB and ∼107 for ANTA molecules, respectively, and these platforms are demonstrated to be capable, even for multiple usages.
Collapse
Affiliation(s)
- Syed Hamad
- Advanced
Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad, Hyderabad 500046, Telangana, India
| | - Sree Satya Bharati Moram
- Advanced
Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad, Hyderabad 500046, Telangana, India
| | - Balaji Yendeti
- Advanced
Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad, Hyderabad 500046, Telangana, India
| | - G. Krishna Podagatlapalli
- Advanced
Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad, Hyderabad 500046, Telangana, India
| | | | | | - Mahamad Ahamad Mohiddon
- Centre
for Nanoscience and Technology, University
of Hyderabad, Prof. C.
R. Rao Road, Gachibowli, Hyderabad 500046, India
| | - Venugopal Rao Soma
- Advanced
Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad, Hyderabad 500046, Telangana, India
- E-mails: ,
| |
Collapse
|
8
|
Multi-photon absorption enhancement by dual-wavelength double-pulse laser irradiation for efficient dicing of sapphire wafers. Sci Rep 2017; 7:5218. [PMID: 28701791 PMCID: PMC5507870 DOI: 10.1038/s41598-017-05548-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 05/31/2017] [Indexed: 11/30/2022] Open
Abstract
The evidence of multi-photon absorption enhancement by the dual-wavelength double-pulse laser irradiation in transparent sapphire was demonstrated experimentally and explained theoretically for the first time. Two collinearly combined laser beams with the wavelengths of 1064 nm and 355 nm, inter-pulse delay of 0.1 ns, and pulse duration of 10 ps were used to induce intra-volume modifications in sapphire. The theoretical prediction of using a particular orientation angle of 15 degrees of the half-wave plate for the most efficient absorption of laser irradiation is in good agreement with the experimental data. The new innovative effect of multi-photon absorption enhancement by dual-wavelength double-pulse irradiation allowed utilisation of the laser energy up to four times more efficiently for initiation of internal modifications in sapphire. The new absorption enhancement effect has been used for efficient intra-volume dicing and singulation of transparent sapphire wafers. The dicing speed of 150 mm/s was achieved for the 430 μm thick sapphire wafer by using the laser power of 6.8 W at the repetition rate of 100 kHz. This method opens new opportunities for the manufacturers of the GaN-based light-emitting diodes by fast and precise separation of sapphire substrates.
Collapse
|