Article
Optics
Yan-Cheng Liang, Yi-En Li, Yi-Hsien Liu, Jia-Fan Kuo, Chung-Wei Cheng, An-Chen Lee
Summary: The laser-induced periodic surface structure (LIPSS) can be induced on the 4H-SiC by femtosecond laser, but there are some problems during the laser process, such as debris dropped on the sample surface. In this study, high-spatial-frequency LIPSS (HSFL) were generated on the 4H-SiC surface using femtosecond laser. Raman spectrum was used to measure HSFL and chemical etching removed the oxidation layer. The results showed a strong correlation between the Raman intensity of amorphous SiC (a-SiC) and the etching rate of HSFL. Additionally, high-quality periodic structures were generated on 4H-SiC after the chemical etching process, with two different morphology observed by transmission electron microscope (TEM).
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Yuchen Zhu, Jian Xu, Haiyan Zhang, Aodong Zhang, Boxin Chen, Bin Zhao, Lei Li, Xuhong Qian, Ya Cheng, Fei Feng
Summary: A straight-sided elliptic micro gas chromatography column (mu GCC) was prepared using ultrafast laser-assisted chemical etching inside a glass substrate. The uniform distribution of flow velocity field and consistent composition of the microchannel resulted in a uniform stationary phase coating. The optimized cross-section structure improved tailing factors and the low manufacturing cost of the glass substrate makes this novel mu GCC economically feasible.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
Kaiwen Ding, Cong Wang, Jian Duan
Summary: In this paper, wet chemical etching is used to improve the surface quality and size of femtosecond laser fabricated microstructures on zinc sulfide (ZnS). Nitric acid solution is chosen as the etchant. The study investigates the changes in surface morphology and size evolution of microgrooves with different etching conditions. The results provide an explanation for the effects of etching on surface quality and size.
Article
Engineering, Chemical
Yu Wang, Bo Xia, Shuai Han, Chunyang Li, Lulu Wan
Summary: Despite the high brittleness of ultra-white glass, surface modification through techniques like vacuum coating and femtosecond laser-assisted chemical etching can induce modified zones on its surface, making the material more suitable for microstructure processing. The experimental optimization of laser and chemical parameters further enhances the efficiency of controlling surface modifications.
Article
Chemistry, Physical
Bao-Xu Wang, Jin-Yong Qi, Yi-Ming Lu, Jia-Xin Zheng, Ying Xu, Xue-Qing Liu
Summary: A hybrid method combining fs-laser scanning, subsequent etching, and annealing was proposed in this work to fabricate micro-optical devices on glass with low roughness. The method not only improved the fabrication efficiency significantly but also decreased the surface roughness, enabling the realization of micro-optical components with excellent properties.
Article
Materials Science, Multidisciplinary
Yawen Yuan, Yishi Wang, Shasha Liu, Xuxue Zhang, Xinzheng Liu, Changhui Sun, Dong Yuan, Yan Zhang, Xiaorong Cao
Summary: Direct growth of high-quality graphene films on glasses by chemical vapor deposition (CVD) method has emerged as a promising route to produce smart glass equipment, with tunable quality, excellent film uniformity, and potential scalability. CF4 plasma etching-assisted CVD method enables the direct synthesis of superhydrophobic light-transmitting graphene glass, with excellent hydrophobicity and transmittance, showing great potential in transparent conductors, smart windows, simple heating devices, and solar-cell electrode fields.
Article
Engineering, Electrical & Electronic
Xue-Qing Liu, Rong Cheng, Jia-Xin Zheng, Shuang-Ning Yang, Bao-Xu Wang, BenFeng Bai, Qi-Dai Chen, Hong-Bo Sun
Summary: Blazed gratings can concentrate light energy to desired diffraction orders in optical detection devices. By utilizing femtosecond laser lithography and reactive ion etching on sapphire substrates, blazed gratings with high mechanical stability were fabricated, providing insights for the construction of micro-optical devices with potential applications under harsh conditions.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yinan Li, Jun Wang, Huixin Li, Liulian Huang, Lihui Chen, Yonghao Ni, Qinghong Zheng
Summary: Transparent actuators, made of cellulose-based film and PTFE two-layered film, show high sensitivity and stability, with bidirectional actuation achieved by controlling ambient humidity and IR light. The unique hygroscopic effect of cellulose contributes to their superior performance compared to petroleum-based actuators.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Composites
Yishan Yang, Yukang Lai, Song Zhao, Hongguang Chen, Renshu Li, Yongjiang Wang
Summary: This study reports the synthesis of a new transparent fiber reinforced polymer material (tGFRP) with high transparency and superior mechanical properties by controlling the refractive index of epoxy resin and using a novel processing technique.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Chemistry, Analytical
Lansheng Zhang, Xiaoyang Chu, Feng Tian, Yang Xu, Huan Hu
Summary: This paper presents a cost-effective and scalable method for producing hierarchical micro-/nanostructured silicon surfaces. By using metal-assisted chemical etching, the researchers achieved superhydrophobic properties and a long ice delay time on the hierarchical micro-/nanostructured surfaces.
Article
Optics
Youwang Hu, Yalong Wang, Xianshan Dong, Xiang Xi, Chao Long, Haoning Zheng, Yao Wang, Xiaoyan Sun, Ji'an Duan
Summary: With the development of technology, fused silica has been widely used in various industrial fields. This paper proposes a method that combines femtosecond laser modification processing and chemical etching technology to cut fused silica. The processing parameters of femtosecond laser modification are explored, and high-quality cutting of millimeter-thick fused silica is achieved.
Article
Nanoscience & Nanotechnology
Yang Liu, Xiaowei Li, Zhipeng Wang, Bin Qin, Shipeng Zhou, Ji Huang, Zhulin Yao
Summary: This study proposes a wet etching assisted spatially modulated femtosecond laser pulse fabricating technology to rapidly fabricate silica microlens arrays (MLAs) with multiple numerical-apertures (NAs). The technology modifies silica using a laser pulse with a large aspect ratio created through axial modulation, resulting in microlenses with larger NAs. Additionally, radial modulation enables the fabrication of MLAs with multiple NAs in a single exposure. The proposed technology has significant potential for various applications.
Article
Biotechnology & Applied Microbiology
Roey Elnathan, Andrew W. Holle, Jennifer Young, Marina A. George, Omri Heifler, Andriy Goychuk, Erwin Frey, Ralf Kemkemer, Joachim P. Spatz, Alon Kosloff, Fernando Patolsky, Nicolas H. Voelcker
Summary: Programmable nano-bio interfaces with tuneable vertically configured nanostructures are powerful tools for cellular manipulations and interrogations. However, the opaque nature of many nanostructured surfaces makes non-destructive, live-cell characterization challenging.
JOURNAL OF NANOBIOTECHNOLOGY
(2021)
Article
Optics
P. H. D. Ferreira, D. C. N. Fabris, M. O. C. Villas Boas, I. G. Bezerra, C. R. Mendonca, E. D. Zanotto
Summary: Transparent glass-ceramics (TGC) shows great potential in ballistic armor and smart phone displays, with superior performance compared to traditional glasses; Using femtosecond laser pulses, optical waveguides were inscribed inside a magnesium aluminum silicate (MAS) precursor glass and glass-ceramic, showing satisfactory mechanical properties for ballistic armor applications.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Lian Duan, Haibo Zhou, Ji-an Duan
Summary: In this study, femtosecond laser ablation was used to machine smooth grooves on optically clear adhesives (OCAs) for optoelectronic module and chip integrated manufacturing. A new method of visual detection was introduced to evaluate the tack of micro-areas. The results demonstrate that laser irradiation decreases both the tack and transmittance of the films, and the partial preservation of certain chemical bonds contributes to the stability of the irradiated structure.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Kana Tomita, Tetsuo Kishi, Tetsuji Yano, Pieter Vlugter, Yves Bellouard
Summary: In this study, arbitrary 3D shapes were fabricated in fused silica with micron precision by combining femtosecond laser exposure with chemical etching. The results suggest that by tuning the material properties and utilizing the acoustic black hole effect, remarkable amplitude decrease in resonance peak of silica microcantilevers can be achieved without the use of damping materials. Additionally, residual effects of the laser exposure on the specimen surface were observed to have noticeable influence on the dynamic behavior of the device through Fourier-transform infrared spectroscopy (FTIR) analysis.
INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
(2021)
Article
Optics
Enrico Casamenti, Tao Yang, Pieter Vlugter, Yves Bellouard
Summary: This study investigates mechanical nonlinearities in suspended glass waveguides for optically retrieving key vibration pattern information. By utilizing optical phase changes to measure optical path elongation and stress caused by vibrations, the method can detect excessive vibrations and identify specific vibration patterns without the need for additional signal processing. The manufacturing process based on femtosecond laser exposure and chemical etching makes the sensing principle simple, compact, robust, and scalable to a broad frequency range.
Article
Materials Science, Multidisciplinary
Gozden Torun, Tetsuo Kishi, Yves Bellouard
Summary: A self-organized process on a potassium-tungsten-tellurite glass surface under repetitive femtosecond laser irradiation was observed, where cumulative effects led to localized melting. Periodic patterns of parallel nanoplanes perpendicular to the laser polarization were forming and extending, involving phase change, elemental redistribution, and deoxygenation. This process was triggered by optical-field strength and reinforced by metallization in an open-air atmosphere.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Optics
Enrico Casamenti, Sacha Pollonghini, Yves Bellouard
Summary: Advanced three-dimensional manufacturing techniques are changing the traditional way of designing and producing sophisticated parts. Overcoming limitations like high-aspect-ratio structures is essential for unleashing the full potential. The use of optical non-linear absorption effects in 3D printing of glass has shown promising results in achieving unprecedented aspect ratio levels.
Article
Engineering, Manufacturing
Luciano Borasi, Enrico Casamenti, Raphael Charvet, Cyril Denereaz, Sacha Pollonghini, Lea Deillon, Tao Yang, Fatmah Ebrahim, Andreas Mortensen, Yves Bellouard
Summary: Producing freeform three-dimensional micro-components out of copper, silver or gold and their alloys remains an engineering challenge, but a faster alternative approach using femtosecond laser micromachining and selective etching in amorphous silica has been introduced. This method allows for the creation of metal micro-components with micron-scale resolution, freeform geometry, dense metal composition, and high processing speed, enabling new micro-device architectures.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Optics
Olivier Bernard, Yves Bellouard
Summary: The use of femtosecond lasers provides a versatile method for encoding information and modifying transparent materials with sub-micron resolution, thanks to the non-linear nature of laser-matter interaction. However, achieving repeatable and accurate results relies heavily on time-consuming machine-specific calibration and experiment-specific fine-tuning due to the complex physical processes involved.
JOURNAL OF PHYSICS-PHOTONICS
(2021)
Article
Physics, Applied
Ruben Ricca, Victor Boureau, Yves Bellouard
Summary: Ultrafast laser exposure can induce localized crystallization and elemental redistribution in amorphous dielectric multi-layers, leading to the formation of silicon nanocrystal clusters with energy channeled transversely to the laser propagation axis. This process under extreme conditions offers a pathway for local and selective crystallization of various compounds and phases that are difficult to obtain otherwise.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Optics
Enrico Casamenti, Gozden Torun, Luciano Borasi, Maxime Lautenbacher, Mathieu Bertrand, Jerome Faist, Andreas Mortensen, Yves Bellouard
Summary: Chalcogenide glass has wide transmission window, high refractive index, and nonlinear optical properties in the infrared range. However, the poor mechanical properties and low chemical and environmental stability make it challenging to produce three-dimensional microstructures. In this study, the combination of femtosecond laser-assisted chemical etching and pressure-assisted infiltration is used to fabricate chalcogenide-silica micro-glass composites with geometrically complex 3D structures. The resulting products have a high refractive index contrast for total-internal-reflection guiding and suitable optical quality roughness level for infrared applications.
Article
Microscopy
Jonathan Barolak, David Goldberger, Jeff Squier, Yves Bellouard, Charles Durfee, Daniel Adams
Summary: This study introduces the experimental demonstration of wavelength-multiplexing in single-shot ptychography, reconstructing complex transmission profiles simultaneously for different probing wavelengths. It discusses the advantages of a more general approach to detector segmentation and presents a minimization technique to correct uncertainties in a priori information. Additionally, it introduces a novel probe constraint without the need for an external reference, enabling various imaging technologies and applications.
Article
Materials Science, Multidisciplinary
Pieter Vlugter, Yves Bellouard
Summary: Materials with thermal-invariant elastic properties are of interest for resonant device frequency and dimensional stability of precision devices. Here, we demonstrate that the temperature coefficient of elasticity (TCE) of amorphous silica can be locally reduced using femtosecond laser irradiation, showing a decrease of the TCE beyond 50% due to the presence of submicron permanent densified zones within the fine multilayer structure of the laser-modified zone.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Physics, Multidisciplinary
Goezden Torun, Anupama Yadav, Kathleen A. Richardson, Yves Bellouard
Summary: This study investigates the formation of regular patterns in chalcogenide glass using self-organization processes during femtosecond laser exposure. The formation of nanostructures correlated to the glass network structural evolution is analyzed using Raman spectroscopy and microscopy analysis.
FRONTIERS IN PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Arunkrishnan Radhakrishnan, Julien Gateau, Pieter Vlugter, Yves Bellouard
Summary: This paper investigates the densification induced by pressure occurring between the foci of two laser beams. The method can be applied to high-pressure physics studies on various transparent substrates and offers higher flexibility compared to traditional methods.
OPTICAL MATERIALS EXPRESS
(2022)
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
Physics, Applied
Ruben Ricca, Yves Bellouard
Summary: We demonstrate extreme laser-induced modification confinement in a stack of dielectric layers along the optical axis without tight focusing. An aperiodic distribution of layer thicknesses leads to the formation of subsurface laser-induced modifications, confined in a predefined layer, without affecting the surrounding material. The confinement is correlated to a local electric field enhancement phenomenon and the presence of nanocrystallites is confirmed.
PHYSICAL REVIEW APPLIED
(2023)
Article
Multidisciplinary Sciences
Tanveer Ul Islam, Yves Bellouard, M. J. Jaap den Toonder
Summary: Cilia, as a fundamental actuating unit in cellular biology, produce motions at submicrometer scales and drive crucial bioprocesses in both vertebrate and invertebrate organisms. By utilizing magnetic materials, artificial cilia with submicrometer dimensions and unprecedented deflection capabilities have been successfully fabricated, allowing for high motility at sizes equal to those of their smallest biological counterparts. This work has crossed the barrier of nanoscale motile cilia fabrication, paving the way for maximum control and manipulation of structures and processes at micro-and nanoscales.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
