Article
Chemistry, Analytical
Hua Tan, Jiahui Pan, Xiaojia Zheng, Xiaoquan Fu, Yuxun Zhang, Yanxing Liu, Qiheng Huang
Summary: This study utilizes femtosecond laser glass welding technology to form four different porous structures of welding spots through specific manufacturing processes. The welding spot fabricated by the flattened Gaussian beam exhibits smooth edges and a flat pore bottom. The welding spot manufactured with alternating high repetition rates introduces multiple refractive indices.
Article
Materials Science, Multidisciplinary
Yagiz Morova, Berna Morova, Hadi Jahangiri, Isinsu Baylam, Alberto Di Lieto, Giovanni Cittadino, Eugenio Damiano, Mauro Tonelli, Alphan Sennaroglu
Summary: In this experiment, we demonstrate for the first time the robust operation of a Nd3(+:)BaY(2)F(8) waveguide laser at 1.3 μm without any parasitic lasing. The use of femtosecond laser writing allowed us to fabricate a depressed cladding waveguide with excellent power performance.
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
Materials Science, Multidisciplinary
Nicholas A. Smith, Mark D. Mackenzie, James M. Morris, Ajoy K. Kar, Henry T. Bookey
Summary: A single-crystal Nd:YAG cylindrical rod fabricated through femtosecond laser-induced preferential etching is studied for its laser characteristics and thermal stability. This fabrication technology is expected to be utilized in composite micro-optical devices.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Chemistry, Multidisciplinary
Gozden Torun, Tetsuo Kishi, Diego Pugliese, Daniel Milanese, Yves Bellouard
Summary: This article discusses the formation of elemental trigonal tellurium (t-Te) on tellurite glass surfaces exposed to femtosecond laser pulses. The underlying elemental crystallization phenomenon is investigated by altering laser parameters in common tellurite glass compositions under various ambient conditions. The research reveals the complex phase transformation and potential to fabricate functional transparent electronic micro/nanodevices.
ADVANCED MATERIALS
(2023)
Article
Optics
Junxian Luo, Kanghu Zhou, Yingqing Ma, Yu Lei, Hanwen Liu, Hongwei Tong, Richard Xiao, Yuwen Wang, Ye Chen, Zhuo Chen, Fei Xu
Summary: This article introduces an epoxy-free bonding method using femtosecond laser welding borosilicate glass and optical fibers. Experimental results demonstrate the low-loss and polarization-independent fiber-to-fiber coupling reliability of this method.
Article
Optics
Hua Tan, Jiahui Pan, Xiaojia Zheng, Xiaoquan Fu
Summary: This research introduces a method of making magnetic glass by welding magnetic powder with a femtosecond laser. The study highlights the impact of high repetition rate on welding quality, and proposes an efficient, accurate, and environmentally friendly approach for fabricating magnetic glass for various applications.
LASER PHYSICS LETTERS
(2021)
Article
Optics
Jianping Yu, Jian Xu, Qiaonan Dong, Jia Qi, Jianfang Chen, Aodong Zhang, Yunpeng Song, Wei Chen, Ya Cheng
Summary: This paper presents a method for fabricating low-loss optofluidic waveguides in fused silica glass by using femtosecond laser microfabrication and carbon dioxide laser irradiation. Circular microchannels and open extra-access ports are first created using spatially-shaped femtosecond laser-assisted chemical etching. Then, carbon dioxide laser direct writing is applied to achieve a thermal reflow effect, which polishes all internal surfaces of the channels and seals the extra-access ports. By filling a mixture solution of decane and liquid paraffin into a laser-polished microchannel, a single-mode microfluidic optical waveguide with a propagation loss of -0.78 dB/cm at 1310 nm is obtained.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yongchao Yu, Pooran Joshi, Denzel Bridges, David Fieser, Anming Hu
Summary: This paper reports multileveled resistance states of tellurium (Te) nanotube based on the clean-room free femtosecond laser nano-joining method, providing a new approach for fabricating high-quality and stable memristors.
Article
Chemistry, Physical
Stoffel D. Janssens, David Vazquez-Cortes, Burhannudin Sutisna, Eliot Fried
Summary: This novel approach presents a method for creating durable nanochannels by using a femtosecond laser to directly write optically accessible nanochannels. The dimensions of these nanochannels can be tuned by adjusting the laser pulse energy. The mechanism of nanostrip formation and the patterning of the film through laser writing are also investigated. The applicability of the laser-written nanochannels is demonstrated by fabricating a nanofluidic device that fills with water via capillary action.
Article
Chemistry, Physical
Cezhi Du, Huilu Yuan, Xinna Zhu, Tao Zhang, Zhihua Liu, Chengyong Wang
Summary: Zirconium-based bulk metallic glasses (Zr-BMGs) with biomimetic structures were created using femtosecond laser, and their antifouling and antibacterial properties were evaluated. The results showed that the rice leaf-like and butterfly wing-like structures had the best antifouling effect, while the shark skin-like structure exhibited the highest bactericidal performance. Crystallization was observed on the surfaces with laser energy intensities greater than 2.38 J/mm2, but the substrate remained amorphous. The Nepenthes-like structure with disordered nano bulges showed the best balance between antifouling, bactericidal, and biocompatibility. These laser fabricated biomimetic structures can enhance the antibacterial activity of Zr-BMG medical devices, thereby improving medical treatment quality.
SURFACES AND INTERFACES
(2023)
Review
Chemistry, Analytical
Agne Butkute, Linas Jonusauskas
Summary: The rapid expansion of femtosecond laser technology has enabled significant advances in the 3D processing of transparent materials, leading to the production of high-precision structures like nanophotonic elements and microfluidic systems. This review discusses the underlying physical mechanism of material interaction with ultrashort pulses, its applications in 3D processing, and possible limitations. Further directions for field development, including synergies with other fs-laser-based manufacturing techniques, are highlighted.
Article
Optics
Haotian Deng, Dongfeng Qi, Xiaomeng Wang, Yuhan Liu, Shiyong Shangguan, Jianguo Zhang, Xiang Shen, Xueyun Liu, Jing Wang, Hongyu Zheng
Summary: In this paper, infrared microlens arrays with an area of 0.64 mm2 were prepared on As2Se3 using femtosecond laser technology. The prepared microlens array showed excellent surface morphology and smoothness. The uniform IR microlens array achieved high transparency of up to 60% in the mid-infrared region, with no significant change in transmittance before and after laser processing, showing outstanding application prospects.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Jiafeng Lu, Enrique Garcia-Caurel, Razvigor Ossikovski, Francois Courvoisier, Xianglong Zeng, Bertrand Poumellec, Matthieu Lancry
Summary: Chirality transfer from femtosecond laser direct writing in achiral transparent materials is caused by the interplay between anisotropic nanogratings and mechanical stress with non-parallel and non-perpendicular neutral axes. However, laser fabrication also induces significant linear birefringence. To precisely manipulate circular polarization properties and minimize linear birefringence, we propose a geometry-inspired multilayer method for direct writing of chiral waveplates. Theoretical analysis shows that our method achieves strong circular birefringence and provides a facile platform for chiral device exploration with minimal linear property existence.
Article
Materials Science, Multidisciplinary
Shaokun Wang, Fan Zhang, Qing Yang, Minjing Li, Xun Hou, Feng Chen
Summary: This study proposes a method of fabricating glass infrared artificial compound eyes (ACE) using femtosecond laser wet etching and precision glass molding. The fabricated glass infrared ACE demonstrates high resolution, large field of view, and low aberration. Additionally, the proposed technology offers advantages of low cost and high efficiency.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Neurosciences
Sung Young Park, Sang-Ho Song, Brandon Palmateer, Akash Pal, Eric D. Petersen, Gabrielle P. Shall, Ryan M. Welchko, Keiji Ibata, Atsushi Miyawaki, George J. Augustine, Ute Hochgeschwender
JOURNAL OF NEUROSCIENCE RESEARCH
(2020)
Article
Multidisciplinary Sciences
Margarete Diaz-Cuadros, Daniel E. Wagner, Christoph Budjan, Alexis Hubaud, Oscar A. Tarazona, Sophia Donelly, Arthur Michaut, Ziad Al Tanoury, Kumiko Yoshioka-Kobayashi, Yusuke Niino, Ryoichiro Kageyama, Atsushi Miyawaki, Jonathan Touboul, Olivier Pourquie
Article
Multidisciplinary Sciences
Kumiko Yoshioka-Kobayashi, Marina Matsumiya, Yusuke Niino, Akihiro Isomura, Hiroshi Kori, Atsushi Miyawaki, Ryoichiro Kageyama
Article
Multidisciplinary Sciences
Bing Xue, Yuuki Tamaru, Yuxi Fu, Hua Yuan, Pengfei Lan, Oliver D. Muecke, Akira Suda, Katsumi Midorikawa, Eiji J. Takahashi
Article
Materials Science, Multidisciplinary
Felix Sima, Hiroyuki Kawano, Masahiko Hirano, Atsushi Miyawaki, Kotaro Obata, Daniela Serien, Koji Sugioka
ADVANCED MATERIALS TECHNOLOGIES
(2020)
Article
Instruments & Instrumentation
Kotaro Nishimura, Yuxi Fu, Akira Suda, Katsumi Midorikawa, Eiji J. Takahashi
Summary: In this study, an approach for energy-scaling of high-order harmonic generation in the water-window region under a neutral-medium condition was developed, leading to a nanojoule-class water-window soft x-ray harmonic beam. By combining a terawatt-class mid-infrared femtosecond laser and a loose-focusing geometry, the generated beam is more than 100 times intense compared to previously reported results.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Editorial Material
Engineering, Manufacturing
Koji Sugioka
Summary: The GHz burst mode of femtosecond laser pulses can improve ablation efficiency without deteriorating ablation quality. However, optimizing the parameters involved in GHz burst mode poses challenges for practical implementation. The author’s perspective article examines the history, current status, and future challenges and prospects of this new strategy in femtosecond laser processing.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Francesc Caballero-Lucas, Kotaro Obata, Koji Sugioka
Summary: Ultrashort laser pulses can achieve precise material ablation by confining the processing area and suppressing heat diffusion. However, challenges arise when high speed material removal and higher ablation efficiencies are required. A study found that combining GHz bursts with MHz bursts in BiBurst mode significantly improves the ablation efficiency of silicon. Under optimal conditions, BiBurst mode can ablate a volume 4.5 times larger than single pulse mode ablation while delivering the same total energy.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2022)
Review
Optics
Katsumi Midorikawa
Summary: Research on isolated attosecond pulses (IAPs) based on high-order harmonic generation underwent significant changes around 2010. The use of mid-infrared optical parametric amplifier as the driving source led to improved performance of IAPs in terms of pulse width, intensity, and photon energy. However, the limited flux of IAPs still restricts their applications.
Article
Engineering, Manufacturing
Shota Kawabata, Shi Bai, Kotaro Obata, Godai Miyaji, Koji Sugioka
Summary: This study explores the ability of GHz burst mode femtosecond laser pulses to create two-dimensional laser-induced periodic surface structures (LIPSS) on silicon. The formation mechanism of these structures is attributed to the synergistic contribution of the electromagnetic mechanism and the hydrodynamic mechanism, including the generation of hot spots and convection flow.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Kotaro Obata, Francesc Caballero-Lucas, Shota Kawabata, Godai Miyaji, Koji Sugioka
Summary: To achieve high-throughput material removal, higher laser intensities are preferred, but they can have detrimental effects on ablation quality. This paper introduces a BiBurst femtosecond laser pulse method that prevents air breakdown and increases ablation speed by a factor of 23 without deteriorating ablation quality under conditions where air ionization is avoided.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2023)
Article
Engineering, Biomedical
Daniela Serien, Aiko Narazaki, Koji Sugioka
Summary: Femtosecond laser direct write (fs-LDW) is a promising technology for high-resolution, flexible, and versatile three-dimensional printing using protein solution as a precursor. The diverse proteins with different native functions enable various applications of this technology. However, the lack of understanding of the printing mechanism hampers the design and generation of 3D microstructures for biomedical applications. In this study, we used eight commercially available homopeptides as precursors and found that tyrosine, histidine, glutamic acid, and lysine contribute more to the fabrication process, indicating the involvement of ions in addition to the previously proposed radical mechanism. The findings suggest that the uneven electron density over larger amino acid molecules plays a significant role in aiding fs-LDW.
ACTA BIOMATERIALIA
(2023)
Article
Optics
Yu-Chieh Lin, Katsumi Midorikawa, Yasuo Nabekawa
Summary: In this study, we report on the measurement and control of the spatial wavefront of a subcycle optical vortex (OV) pulse by adjusting the carrier-envelope phase (CEP). By utilizing an optical system with spectral adaptability, we were able to observe the impact of CEP manipulation on the wavefront.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Proceedings Paper
Nanoscience & Nanotechnology
Daniela Serien, Hiroyuki Kawano, Atsushi Miyawaki, Koji Sugioka
LASER-BASED MICRO- AND NANOPROCESSING XIV
(2020)
Meeting Abstract
Biophysics
Yoh Shitashima, Atsushi Miyawaki
BIOPHYSICAL JOURNAL
(2020)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)
