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Niemczyk A, Jędrzejewski R, Piwowarczyk J, Baranowska J. Rubber-like PTFE Thin Coatings Deposited by Pulsed Electron Beam Deposition (PED) Method. Polymers (Basel) 2024; 16:1205. [PMID: 38732674 PMCID: PMC11085439 DOI: 10.3390/polym16091205] [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: 03/27/2024] [Revised: 04/20/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
PTFE coatings were manufactured using the pulsed electron beam deposition (PED) technique and deposited on Si substrates. The deposition was carried out at constant parameters: temperature 24 °C, discharge voltages 12 kV, and 5000 electron pulses with a pulse frequency of 5 Hz. Nitrogen was used as the background gas. The gas pressure varied from 3 to 11 mTorr. The coating adhesion was evaluated using micro scratch testing and the residual scratch morphology was characterized by atomic force microscopy. Detailed studies of the chemical and physical structure were conducted using infrared spectroscopy and X-ray diffraction. These analyses were then correlated with the mechanical response of the coatings observed during the scratch tests. Drawing upon a review of the literature concerning energetic beam interactions with PTFE material, hypotheses were posed to explain why only specific conditions of the PED process yielded PTFE coatings with rubber-like properties.
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Affiliation(s)
- Agata Niemczyk
- Department of Materials Technology, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, Piastów Avenue 19, 70-310 Szczecin, Poland
| | - Roman Jędrzejewski
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland
| | - Joanna Piwowarczyk
- Department of Materials Technology, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, Piastów Avenue 19, 70-310 Szczecin, Poland
| | - Jolanta Baranowska
- Department of Materials Technology, Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, Piastów Avenue 19, 70-310 Szczecin, Poland
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Taha D, Safwat F, Wahsh M. Effect of combining different surface treatments on the surface characteristics of polyetheretherketone-based core materials and shear bond strength to a veneering composite resin. J Prosthet Dent 2022; 127:599.e1-599.e7. [DOI: 10.1016/j.prosdent.2022.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/11/2022] [Accepted: 01/11/2022] [Indexed: 11/30/2022]
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3
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Yabagi JA, Jameel MH, Jabbar AH, Kimpa MI, Qays Malik R, Xin SP, Babakatcha N, Ladan MB, Hamzah MQ, Agam M, Hessien MM, Mersal GAM. Effect of laser irradiated silver doped polystyrene/polyethylene terephthalate (PET) thin film for solar cell applications. RSC Adv 2022; 12:32949-32955. [DOI: 10.1039/d2ra04777b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 11/06/2022] [Indexed: 11/18/2022] Open
Abstract
In the current research, the resist action of silver-doped polystyrene/polyethylene terephthalate (PET) solar thin film towards laser irradiation was observed.
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Affiliation(s)
- Jibrin Alhaji Yabagi
- Departments of Physics, Faculty of Natural Sciences, Ibrahim Badamasi Babangida University Lapai, P.M.B 11, Lapai, Niger State, Nigeria
| | - Muhammad Hasnain Jameel
- Department of Physics and Chemistry, University Tun Hussein Onn Malaysia, 84600 Pagoh, Muar, Johor, Malaysia
| | - Abdullah Hasan Jabbar
- Optical Department, College of Medical and Health Technology, Sawa University, Ministry of Higher Education and Scientific Research, Samawah, Al-Muthanaa, Iraq
| | - Mohammed Isah Kimpa
- Department of Physics, School of Physical Sciences, Federal University of Technology Minna, P.M.B. 65, Minna, Niger State, Nigeria
| | - Rami Qays Malik
- Medical Instrumentation Techniques Engineering Department, Al-Mustaqbal University College, Babylon, Iraq
| | - Sim Pei Xin
- Department of Physics and Chemistry, University Tun Hussein Onn Malaysia, 84600 Pagoh, Muar, Johor, Malaysia
| | - Ndanusa Babakatcha
- Departments of Physics, Faculty of Natural Sciences, Ibrahim Badamasi Babangida University Lapai, P.M.B 11, Lapai, Niger State, Nigeria
| | - Muhammad Bello Ladan
- Departments of Physics, Faculty of Natural Sciences, Ibrahim Badamasi Babangida University Lapai, P.M.B 11, Lapai, Niger State, Nigeria
| | - Maytham Qabel Hamzah
- Department of Physics and Chemistry, University Tun Hussein Onn Malaysia, 84600 Pagoh, Muar, Johor, Malaysia
- Directorate of Education Al-Muthanna, Ministry of Education, Republic of Iraq
| | - MohdArif Agam
- Department of Physics and Chemistry, University Tun Hussein Onn Malaysia, 84600 Pagoh, Muar, Johor, Malaysia
| | - M. M. Hessien
- Department of Chemistry, College of Science, Taif University, P.O Box 11099, Taif, 21944, Saudi Arabia
| | - Gaber A. M. Mersal
- Department of Chemistry, College of Science, Taif University, P.O Box 11099, Taif, 21944, Saudi Arabia
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Tofil S, Barbucha R, Kocik M, Kozera R, Tański M, Arivazhagan N, Yao J, Zrak A. Adhesive Joints with Laser Shaped Surface Microstructures. MATERIALS 2021; 14:ma14247548. [PMID: 34947144 PMCID: PMC8707252 DOI: 10.3390/ma14247548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/27/2021] [Accepted: 12/03/2021] [Indexed: 01/06/2023]
Abstract
One of the most commonly applied methods of joining dissimilar materials is gluing. This could be mainly attributed to the applicability of this technique in various industries. The article presents a method of material surface treatment, which increases the shear strength of adhesive joints for lightweight metals such as aluminum with plastics. For this purpose, laser surface microstructuring was performed on each of the selected construction materials. As a result of the performed treatment, the active surface of the glued area was increased, which increased the adhesive strength. The picosecond laser with UV radiation used in the research is TruMicro 5325c with which material can be removed as a result of the cold ablation phenomenon. The applied parameters of the laser device did not cause thermal damage to the surface of the microstructured materials, which was confirmed by microscopic examination. Laser micromachining did not deteriorate the degree of wetting of the tested materials, either, as was confirmed by the contact angle and surface energy measurements with the use of water as the measuring liquid. In investigated cases of microstructure types, the presented method significantly increased the shear strength of the joints formed, as demonstrated by the presented strength test results. Research has shown that created joints with microstructure made according to the described method, are characterized by a significant increase in strength, up to 376%, compared to materials without microstructure. The presented results are part of a series of tests aimed at selecting the operating laser parameters for the implementation of geometric shapes of microstructures which will increase the strength of adhesive joints in selected materials.
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Affiliation(s)
- Szymon Tofil
- Laser Research Centre, Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Av. Tysiąclecia P.P. 7, 25-314 Kielce, Poland
- Correspondence: ; Tel.: +48-41-34-24-533
| | - Robert Barbucha
- Institute of Fluid Flow Machinery, Polish Academy of Sciences, Generała Stanisława Fiszera 14, 80-231 Gdańsk, Poland; (R.B.); (M.K.); (M.T.)
| | - Marek Kocik
- Institute of Fluid Flow Machinery, Polish Academy of Sciences, Generała Stanisława Fiszera 14, 80-231 Gdańsk, Poland; (R.B.); (M.K.); (M.T.)
| | - Rafał Kozera
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warszawa, Poland;
| | - Mateusz Tański
- Institute of Fluid Flow Machinery, Polish Academy of Sciences, Generała Stanisława Fiszera 14, 80-231 Gdańsk, Poland; (R.B.); (M.K.); (M.T.)
| | | | - Jianhua Yao
- Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, China;
| | - Andrej Zrak
- Faculty of Mechanical Engineering, Žilinská Univerzita v Žiline, Univerzitná 8215/1, 010 26 Žilina, Slovakia;
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Effect of Extreme Ultraviolet (EUV) Radiation and EUV Induced, N 2 and O 2 Based Plasmas on a PEEK Surface's Physico-Chemical Properties and MG63 Cell Adhesion. Int J Mol Sci 2021; 22:ijms22168455. [PMID: 34445159 PMCID: PMC8395134 DOI: 10.3390/ijms22168455] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/28/2021] [Accepted: 08/03/2021] [Indexed: 11/17/2022] Open
Abstract
Polyetheretherketone (PEEK), due to its excellent mechanical and physico-chemical parameters, is an attractive substitute for hard tissues in orthopedic applications. However, PEEK is hydrophobic and lacks surface-active functional groups promoting cell adhesion. Therefore, the PEEK surface must be modified in order to improve its cytocompatibility. In this work, extreme ultraviolet (EUV) radiation and two low-temperature, EUV induced, oxygen and nitrogen plasmas were used for surface modification of polyetheretherketone. Polymer samples were irradiated with 100, 150, and 200 pulses at a 10 Hz repetition rate. The physical and chemical properties of EUV and plasma modified PEEK surfaces, such as changes of the surface topography, chemical composition, and wettability, were examined using atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and goniometry. The human osteoblast-like MG63 cells were used for the analysis of cell viability and cell adhesion on all modified PEEK surfaces. EUV radiation and two types of plasma treatment led to significant changes in surface topography of PEEK, increasing surface roughness and formation of conical structures. Additionally, significant changes in the chemical composition were found and were manifested with the appearance of new functional groups, incorporation of nitrogen atoms up to ~12.3 at.% (when modified in the presence of nitrogen), and doubling the oxygen content up to ~25.7 at.% (when modified in the presence of oxygen), compared to non-modified PEEK. All chemically and physically changed surfaces demonstrated cyto-compatible and non-cytotoxic properties, an enhancement of MG63 cell adhesion was also observed.
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Daskalova A, Angelova L, Filipov E, Aceti D, Mincheva R, Carrete X, Kerdjoudj H, Dubus M, Chevrier J, Trifonov A, Buchvarov I. Biomimetic Hierarchical Structuring of PLA by Ultra-Short Laser Pulses for Processing of Tissue Engineered Matrices: Study of Cellular and Antibacterial Behavior. Polymers (Basel) 2021; 13:2577. [PMID: 34372179 PMCID: PMC8348702 DOI: 10.3390/polym13152577] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/30/2021] [Accepted: 08/01/2021] [Indexed: 11/25/2022] Open
Abstract
The influence of ultra-short laser modification on the surface morphology and possible chemical alteration of poly-lactic acid (PLA) matrix in respect to the optimization of cellular and antibacterial behavior were investigated in this study. Scanning electron microscopy (SEM) morphological examination of the processed PLA surface showed the formation of diverse hierarchical surface microstructures, generated by irradiation with a range of laser fluences (F) and scanning velocities (V) values. By controlling the laser parameters, diverse surface roughness can be achieved, thus influencing cellular dynamics. This surface feedback can be applied to finely tune and control diverse biomaterial surface properties like wettability, reflectivity, and biomimetics. The triggering of thermal effects, leading to the ejection of material with subsequent solidification and formation of raised rims and 3D-like hollow structures along the processed zones, demonstrated a direct correlation to the wettability of the PLA. A transition from superhydrophobic (θ > 150°) to super hydrophilic (θ < 20°) surfaces can be achieved by the creation of grooves with V = 0.6 mm/s, F = 1.7 J/cm2. The achieved hierarchical architecture affected morphology and thickness of the processed samples which were linked to the nature of ultra-short laser-material interaction effects, namely the precipitation of temperature distribution during material processing can be strongly minimized with ultrashort pulses leading to non-thermal and spatially localized effects that can facilitate volume ablation without collateral thermal damage The obtained modification zones were analyzed employing Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), Energy dispersive X-ray analysis (EDX), and optical profilometer. The modification of the PLA surface resulted in an increased roughness value for treatment with lower velocities (V = 0.6 mm/s). Thus, the substrate gains a 3D-like architecture and forms a natural matrix by microprocessing with V = 0.6 mm/s, F = 1.7 J/cm2, and V = 3.8 mm/s, F = 0.8 J/cm2. The tests performed with Mesenchymal stem cells (MSCs) demonstrated that the ultra-short laser surface modification altered the cell orientation and promoted cell growth. The topographical design was tested also for the effectiveness of bacterial attachment concerning chosen parameters for the creation of an array with defined geometrical patterns.
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Affiliation(s)
- Albena Daskalova
- Laboratory of Micro and Nano-Photonics, Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria; (L.A.); (E.F.); (D.A.)
| | - Liliya Angelova
- Laboratory of Micro and Nano-Photonics, Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria; (L.A.); (E.F.); (D.A.)
| | - Emil Filipov
- Laboratory of Micro and Nano-Photonics, Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria; (L.A.); (E.F.); (D.A.)
| | - Dante Aceti
- Laboratory of Micro and Nano-Photonics, Institute of Electronics, Bulgarian Academy of Sciences, 1784 Sofia, Bulgaria; (L.A.); (E.F.); (D.A.)
| | - Rosica Mincheva
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, 7000 Mons, Belgium; (R.M.); (X.C.)
| | - Xavier Carrete
- Laboratory of Polymeric and Composite Materials (LPCM), Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, 7000 Mons, Belgium; (R.M.); (X.C.)
| | - Halima Kerdjoudj
- Bomatériaux et Inflammation en Site Osseux BIOS, Université de Reims Champagne Ardenne, EA 4691, 51100 Reims, France; (H.K.); (M.D.); (J.C.)
- UFR d’odontologie, Université de Reims Champagne Ardenne, 51100 Reims, France
| | - Marie Dubus
- Bomatériaux et Inflammation en Site Osseux BIOS, Université de Reims Champagne Ardenne, EA 4691, 51100 Reims, France; (H.K.); (M.D.); (J.C.)
- UFR d’odontologie, Université de Reims Champagne Ardenne, 51100 Reims, France
| | - Julie Chevrier
- Bomatériaux et Inflammation en Site Osseux BIOS, Université de Reims Champagne Ardenne, EA 4691, 51100 Reims, France; (H.K.); (M.D.); (J.C.)
- UFR d’odontologie, Université de Reims Champagne Ardenne, 51100 Reims, France
| | - Anton Trifonov
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria; (A.T.); (I.B.)
| | - Ivan Buchvarov
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 1164 Sofia, Bulgaria; (A.T.); (I.B.)
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Vinyl and Alkynyl Triazenes: Synthesis, Reactivity, and Applications. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202011031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Suleymanov AA, Severin K. Vinyl and Alkynyl Triazenes: Synthesis, Reactivity, and Applications. Angew Chem Int Ed Engl 2020; 60:6879-6889. [PMID: 33142011 DOI: 10.1002/anie.202011031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Indexed: 12/15/2022]
Abstract
Aromatic compounds containing triazenyl groups (N3 RR') have a profound impact on synthetic organic and medicinal chemistry. In contrast, the chemistry of vinyl and alkynyl triazenes was a largely uncharted territory until recently. The situation has changed over the last five years, and it has become apparent that vinyl and alkynyl triazenes are highly interesting compounds with a unique reactivity. The electron-donating properties of the triazenyl group provide alkynyl triazenes with an ynamide-like reactivity, which can be exploited in reactions of the triple bond. Vinyl triazenes, on the other hand, can be used for electrophilic vinylation reactions. The foundation for this new triazene chemistry are synthetic pathways which allow preparing vinyl and alkynyl triazenes in few steps from readily available starting materials. In this Minireview, we summarize recent developments in this area.
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Affiliation(s)
- Abdusalom A Suleymanov
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
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9
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Application of pulsed laser ablation (PLA) for the size reduction of non-steroidal anti-inflammatory drugs (NSAIDs). Sci Rep 2020; 10:15806. [PMID: 32978489 PMCID: PMC7519063 DOI: 10.1038/s41598-020-72865-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/02/2020] [Indexed: 11/08/2022] Open
Abstract
We studied the application of pulsed laser ablation (PLA) for particle size reduction in non-steroidal anti-inflammatory drugs (NSAIDs). Grinding of the poorly water-soluble NSAID crystallites can considerably increase their solubility and bioavailability, thereby the necessary doses can be reduced significantly. We used tablets of ibuprofen, niflumic acid and meloxicam as targets. Nanosecond laser pulses were applied at various wavelengths (KrF excimer laser, λ = 248 nm, FWHM = 18 ns and Nd:YAG laser, λ1 = 532 nm/λ2 = 1064 nm, FWHM = 6 ns) and at various fluences. FTIR and Raman spectra showed that the chemical compositions of the drugs had not changed during ablation at 532 nm and 1064 nm laser wavelengths. The size distribution of the ablated products was established using two types of particle size analyzers (SMPS and OPC) having complementary measuring ranges. The mean size of the drug crystallites decreased from the initial 30–80 µm to the submicron to nanometer range. For a better understanding of the ablation mechanism we made several investigations (SEM, Ellipsometry, Fast photography) and some model calculations. We have established that PLA offers a chemical-free and simple method for the size reduction of poorly water-soluble drugs and a possible new way for pharmaceutical drug preformulation for nasal administration.
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The Efficiency of UV Picosecond Laser Processing in the Shaping of Surface Structures on Elastomers. Polymers (Basel) 2020; 12:polym12092041. [PMID: 32911674 PMCID: PMC7569905 DOI: 10.3390/polym12092041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/25/2020] [Accepted: 08/28/2020] [Indexed: 01/13/2023] Open
Abstract
Elastomers are used as construction materials in numerous industries, and in particular the biomedical industry, mechatronics, electronics, the automotive industry, and chemical devices. The paper presents the results of tests involving the effects of microprocessing of elastomeric materials using a UV laser emitting picosecond pulses. In particular, it presents an analysis of the influence of the parameters of processing on its efficiency. The paper provides a recommendation of the most advantageous processing parameters for materials such as polyurethane and silicone (MVQ). The authors see prospects for the use of the developed technology in the techniques of sealing and microfluidisation. The final part of the paper presents examples of surface structures generated on elements made of artificial materials and the results of tests involving reduction of friction resistance of sealing rings in a pneumatic actuator.
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Polat B, Ozay Y, Bilici Z, Kucukkara İ, Dizge N. Membrane modification with semiconductor diode laser to reduce membrane biofouling for external MBR system and modelling study. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116747] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Wang R, Duan X, Yao J, Ruan X, Yao Y, Liu T. Processing–structure–property relationship in direct laser writing carbonization of polyimide. J Appl Polym Sci 2020. [DOI: 10.1002/app.48978] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Rui Wang
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Soochow 215123 People's Republic of China
| | - Xiaoshuang Duan
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Soochow 215123 People's Republic of China
| | - Jingwen Yao
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Soochow 215123 People's Republic of China
| | - Xiaojun Ruan
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Soochow 215123 People's Republic of China
| | - Yanbo Yao
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Soochow 215123 People's Republic of China
| | - Tao Liu
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Soochow 215123 People's Republic of China
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XPS and FTIR Studies of Polytetrafluoroethylene Thin Films Obtained by Physical Methods. Polymers (Basel) 2019; 11:polym11101629. [PMID: 31600899 PMCID: PMC6835360 DOI: 10.3390/polym11101629] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 09/23/2019] [Accepted: 10/03/2019] [Indexed: 12/02/2022] Open
Abstract
Two methods—attenuated total reflection Fourier infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS)—have been used to analyze the chemical structure of polytetrafluorethylene (PTFE) thin coatings deposited by pulsed laser (PLD) and pulsed electron beam (PED) ablations. The volume of the analyzed materials is significantly different in these techniques which can be of great importance in the characterization of highly heterogeneous thin films. Optical microscopy, atomic force microscopy (AFM) and scanning electron microscopy (SEM) have been additionally used to examine the coating surface morphology. The studies have shown that in the case of thin polymer coatings deposited by physical methods, the application for chemical structure evaluation of complementary techniques, with different surface sensitivity, together with the use of surface topography imaging, provide unique insight into the film morphology. The results can provide information contributing to an in-depth understanding of the deposition mechanism of polymer coatings.
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Consoli A, Soria E, Caselli N, López C. Random lasing emission tailored by femtosecond and picosecond pulsed polymer ablation. OPTICS LETTERS 2019; 44:518-521. [PMID: 30702668 DOI: 10.1364/ol.44.000518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 12/18/2018] [Indexed: 06/09/2023]
Abstract
We report the realization of random lasers with spatially localized feedback in which the average number of lasing modes is tuned via the fabrication process. The scattering elements required for optical feedback are obtained by short-pulsed laser ablation. By varying the pulse parameters, we control the scattering properties of the induced defects and, thus, the emission spectra. We demonstrate a large variety of spectral signatures typical of resonant random lasing with sub-nanometer linewidths, low thresholds (about 40 pJ/μm2), and single-to-multimode emission. Our simple approach allows us to obtain optical resonators with sharp linewidths at frequencies covering the entire gain window for multiple applications.
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Li G, Cheng M, Li X. Ablation threshold and ablation mechanism transition of polyoxymethylene irradiated by CO 2 laser. APPLIED OPTICS 2016; 55:7042-7049. [PMID: 27607281 DOI: 10.1364/ao.55.007042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Polyoxymethylene (POM) decomposes gradually as it is heated up by the irradiation of CO2 laser; the long-chain molecules of POM are broken into short chains, which leads to the lowering of the melting point and the critical temperature of the ablation products. When the product temperature is above the melting point, ablation comes up in the way of vaporization; when the product temperature is higher than the critical temperature, all liquid products are transformed into gas instantly and the ablation mechanism is changed. The laser fluence at which significant ablation is observed is defined as the ablation threshold, and the fluence corresponding to the ablation mechanism changing is denoted as the flyover threshold. In this paper, random pyrolysis is adopted to describe the pyrolytic decomposition of POM, and consequently, the components of the pyrolysis products under different pyrolysis rates are acquired. The Group Contribution method is used to count the thermodynamic properties of the pyrolysis products, and the melting point and the critical temperature of the product mixture are obtained by the Mixing Law. The Knudsen layer relationship is employed to evaluate the ablation mass removal when the product temperature is below the critical temperature. The gas dynamics conservation laws associated with the Jouguet condition are used to calculate the mass removal when the product temperature is higher than the critical temperature. Based on the model, a set of simulations for various laser intensities and lengths are carried out to generalize the relationships between the thresholds and the laser parameters. Besides the ablated mass areal density, which fits the experimental data quite well, the ablation temperature, pyrolysis rate, and product components are also discussed for a better understanding of the ablation mechanism of POM.
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Olynick DL, Perera P, Schwartzberg A, Kulshreshta P, De Oteyza DG, Jarnagin N, Henderson C, Sun Z, Gunkel I, Russell T, Budden M, Rangelow IW. Selective Laser Ablation in Resists and Block Copolymers for High Resolution Lithographic Patterning. J PHOTOPOLYM SCI TEC 2015. [DOI: 10.2494/photopolymer.28.663] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Pradeep Perera
- Molecular Foundry, Lawrence Berkeley National Laboratory
| | | | | | | | - Nathan Jarnagin
- School of Chemistry and Biochemistry and School of Chemical Engineering, Georgia Institute of Technology
| | - Cliff Henderson
- School of Chemistry and Biochemistry and School of Chemical Engineering, Georgia Institute of Technology
| | - Zhiwei Sun
- Molecular Foundry, Lawrence Berkeley National Laboratory
- Department of Polymer Science and Engineering, University of Massachusetts Amherst
| | - Ilja Gunkel
- Molecular Foundry, Lawrence Berkeley National Laboratory
- Department of Polymer Science and Engineering, University of Massachusetts Amherst
| | - Thomas Russell
- Molecular Foundry, Lawrence Berkeley National Laboratory
- Department of Polymer Science and Engineering, University of Massachusetts Amherst
| | - Matthias Budden
- Department of Micro- and Nanoelectronic Systems (MNES), Ilmenau University of Technology
| | - Ivo W. Rangelow
- Department of Micro- and Nanoelectronic Systems (MNES), Ilmenau University of Technology
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Martín-Fabiani I, Siegel J, Riedel S, Boneberg J, Ezquerra TA, Nogales A. Nanostructuring thin polymer films with optical near fields. ACS APPLIED MATERIALS & INTERFACES 2013; 5:11402-11408. [PMID: 24127989 DOI: 10.1021/am4036543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In the present work, we report on the application of optical near fields to nanostructuring of poly(trimethylene terephthalate) (PTT) thin films. By exposure to a single ultraviolet nanosecond laser pulse, the spatial intensity modulation of the near-field distribution created by a silica microsphere is imprinted into the films. Setting different angles of incidence of the laser, elliptical or circular periodic ring patterns can be produced with periods as small as half the laser wavelength used. These highly complex patterns show optical and topographical contrast and can be characterized by optical microscopy (OM) and atomic force microscopy (AFM). We demonstrate the key role of the laser wavelength and coherence length in achieving smooth, extended patterns in PTT by using excimer laser (193 nm) and Nd:YAG laser (266 nm) pulses. Reference experiments performed in Ge2Sb2Te5 (GST) demonstrate that nanopatterning in PTT is triggered by ablation as opposed to GST, in which nanopatterning originates from laser-induced phase change, accompanied by a small topographical contrast. The experiments presented in this work demonstrate the suitability of optical near fields for structuring polymer films, opening up new possibilities for nanopatterning and paving the way for potential applications where optical near fields and polymer nanostructures are involved.
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Inam Ul Ahad, Bartnik A, Fiedorowicz H, Kostecki J, Korczyc B, Ciach T, Brabazon D. Surface modification of polymers for biocompatibility via exposure to extreme ultraviolet radiation. J Biomed Mater Res A 2013; 102:3298-310. [PMID: 24132935 DOI: 10.1002/jbm.a.34958] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 07/16/2013] [Accepted: 09/09/2013] [Indexed: 01/02/2023]
Abstract
Polymeric biomaterials are being widely used for the treatment of various traumata, diseases and defects in human beings due to ease in their synthesis. As biomaterials have direct interaction with the extracellular environment in the biological world, biocompatibility is a topic of great significance. The introduction or enhancement of biocompatibility in certain polymers is still a challenge to overcome. Polymer biocompatibility can be controlled by surface modification. Various physical and chemical methods (e.g., chemical and plasma treatment, ion implantation, and ultraviolet irradiation etc.) are in use or being developed for the modification of polymer surfaces. However an important limitation in their employment is the alteration of bulk material. Different surface and bulk properties of biomaterials are often desirable for biomedical applications. Because extreme ultraviolet (EUV) radiation penetration is quite limited even in low density mediums, it could be possible to use it for surface modification without influencing the bulk material. This article reviews the degree of biocompatibility of different polymeric biomaterials being currently employed in various biomedical applications, the surface properties required to be modified for biocompatibility control, plasma and laser ablation based surface modification techniques, and research studies indicating possible use of EUV for enhancing biocompatibility.
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Affiliation(s)
- Inam Ul Ahad
- Institute of Optoelectronics, Military University of Technology, 00-908, Warsaw, Poland; Advanced Processing Technology Research Centre, School of Mechanical and Manufacturing Engineering, Faculty of Engineering and Computing, Dublin City University, Dublin 9, Ireland
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Golodkov ON, Ol’khov YA, Allayarov SR, Grakovich PN, Belov GP, Ivanov LF, Kalinin LA, Dixon DA. The effect of γ-irradiation on laser ablation of polyketone. HIGH ENERGY CHEMISTRY 2013. [DOI: 10.1134/s001814391303003x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kim KT, Oh JY, Shin BS, Park DS. Surface Treatment of Polyimide Film by Pulsed UV Laser Ablation and Its Effect on the Electrochemical Characteristics. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.12.3937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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de Oteyza DG, Perera PN, Schmidt M, Falch M, Dhuey SD, Harteneck BD, Schwartzberg AM, Schuck PJ, Cabrini S, Olynick DL. Sub-20 nm laser ablation for lithographic dry development. NANOTECHNOLOGY 2012; 23:185301. [PMID: 22498667 DOI: 10.1088/0957-4484/23/18/185301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Pattern collapse of small or high aspect ratio lines during traditional wet development is a major challenge for miniaturization in nanolithography. Here we report on a new dry process which combines high resolution resist exposure with selective laser ablation to achieve high resolution with high aspect ratios. Using a low power 532 nm laser, we dry develop a normally negative tone methyl acetoxy calix(6)arene in positive tone to reveal sub-20 nm half-pitch features in a ∼100 nm film at aspect ratios unattainable with conventional development with ablation time of 1-2 s per laser pixel (∼600 nm diameter spot). We also demonstrate superior negative tone wet development by combining electron beam exposure with subsequent laser exposure at a non-ablative threshold that requires far less electron beam exposure doses than traditional wet development.
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Affiliation(s)
- D G de Oteyza
- Molecular Foundry, 1 Cyclotron Road, MS 2206R67, CA 94720, USA
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Buruiana EC, Jitaru F, Buruiana T, Olaru N. Polycinnamates and Block Co-polymers Prepared by Atom Transfer Radical Polymerization and Microwave Irradiation. Des Monomers Polym 2012. [DOI: 10.1163/138577210x12634696333398] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- E. C. Buruiana
- a Romanian Academy, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Florentina Jitaru
- b Romanian Academy, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Tinca Buruiana
- c Romanian Academy, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - N. Olaru
- d Romanian Academy, Petru Poni Institute of Macromolecular Chemistry, 41 A Grigore Ghica Voda Alley, 700487 Iasi, Romania
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Buruiana EC, Melinte V, Buruiana T, Simionescu BC. Synthesis and Properties of New Poly(urethane-acrylates) With Pendant Triazene Moieties. Des Monomers Polym 2012. [DOI: 10.1163/156855508x328130] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Emil C. Buruiana
- a Petru Poni Institute of Macromolecular Chemistry, RO-700487 Iasi, Romania
| | - Violeta Melinte
- b Petru Poni Institute of Macromolecular Chemistry, RO-700487 Iasi, Romania
| | - Tinca Buruiana
- c Petru Poni Institute of Macromolecular Chemistry, RO-700487 Iasi, Romania
| | - Bogdan C. Simionescu
- d Petru Poni Institute of Macromolecular Chemistry, RO-700487 Iasi, Romania; Department of Macromolecules, 'Gh. Asachi' Technical University, RO-700050 Iasi, Romania
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Lee KKC, Herman PR, Shoa T, Haque M, Madden JDW, Yang VXD. Microstructuring of polypyrrole by maskless direct femtosecond laser ablation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:1243-1246. [PMID: 22290691 DOI: 10.1002/adma.201104170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Revised: 12/14/2011] [Indexed: 05/31/2023]
Abstract
Ultrafast laser micromachining was optimized for microstructuring polypyrrole as a facile new approach towards tailoring electrochemical and mechanical responses desirable for microactuator, sensors, neural probing, and nerve conduit applications. Laser perforation of high-density and high aspect ratio through-holes generated greater than 5-fold increase in surface area. The flexible machining technique offers micron-size resolution and fast prototyping capability for optimizing properties and opening new directions for polypyrrole-based devices.
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Melinte V, Buruiana T, Tampu D, Buruiana EC. Synthesis of hybrid nanocomposites based on new triazeno copolymers and montmorillonite used for detecting metal ions. POLYM INT 2010. [DOI: 10.1002/pi.2918] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Photoinduced surface relief grating formation for a single crystal of 4-aminoazobenzene. Int J Mol Sci 2010; 11:1311-20. [PMID: 20480021 PMCID: PMC2871117 DOI: 10.3390/ijms11041311] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 03/08/2010] [Accepted: 03/11/2010] [Indexed: 11/17/2022] Open
Abstract
Photoinduced surface relief grating (SRG) formation for a single crystal of 4-aminoazobenzene was investigated. It was found that SRG could be inscribed on the (001) surface of the crystal, which might suggest that the photoinduced SRG formation is a general phenomenon observed for single crystals of azobenzene-based molecules as well as for azobenzene-based amorphous systems. In addition, the dependences of the SRG formation upon the orientation of the sample crystal and upon the polarization of the writing beams were found to be different from those observed for previously reported crystalline systems.
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Ol’khov YA, Allayarov SR, Tolstopyatov EM, Grakovich PN, Kalinin LA, Dobrovol’skii YA, Dixon DA. The effect of continuous CO2 laser radiation on the thermal and molecular—Topological properties of polytetrafluoroethylene. HIGH ENERGY CHEMISTRY 2010. [DOI: 10.1134/s0018143910010108] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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UV Laser Ablation of Polymers: From Structuring to Thin Film Deposition. LASER-SURFACE INTERACTIONS FOR NEW MATERIALS PRODUCTION 2010. [DOI: 10.1007/978-3-642-03307-0_7] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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30
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Schneider CW, Lippert T. Laser Ablation and Thin Film Deposition. LASER PROCESSING OF MATERIALS 2010. [DOI: 10.1007/978-3-642-13281-0_5] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Deng J, Zhou C, Song N. Chiroptically Active Photonics Polymers: Synthesis and Chiroptically Switching Properties of Helical Polyacetylene Bearing Electrochromic Viologens in the Side Chains. Macromolecules 2009. [DOI: 10.1021/ma901326h] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian Deng
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Can Zhou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Naiheng Song
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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Buruiana EC, Hahui L, Buruiana T, Urech L, Lippert T. New polyacrylates with photosensitive triazene groups designed for laser ablation. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2007.10.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18 Coupling CE and microchip-based devices with mass spectrometry. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s0149-6395(07)00018-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Nagel M, Hany R, Lippert T, Molberg M, Nüesch FA, Rentsch D. Aryltriazene Photopolymers for UV-Laser Applications: Improved Synthesis and Photodecomposition Study. MACROMOL CHEM PHYS 2007. [DOI: 10.1002/macp.200600492] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Chen Z, Webster DC. Study of cationic UV curing and UV laser ablation behavior of coatings sensitized by novel sensitizers. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.03.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Buruiana EC, Melinte V, Buruiana T, Simionescu BC. Synthesis and properties of new polyurethanes with triazene moieties in the main chain. J Appl Polym Sci 2005. [DOI: 10.1002/app.21441] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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