Article
Materials Science, Ceramics
Weijie Zhou, Rao Li, Min Li, Pan Tao, Xunsi Wang, Shixun Dai, Baoan Song, Wei Zhang, Changgui Lin, Xiang Shen, Tiefeng Xu, Peiqing Zhang
Summary: This paper presents the fabrication of microlens arrays with good optical quality using wet-etching assisted femtosecond laser direct writing technology. The microlenses exhibit a wide range of diameters and achieve uniform dense stacking in the mid-infrared wavelength range. The fabricated microlens arrays have significant applications in cutting-edge mid-infrared fields.
CERAMICS INTERNATIONAL
(2022)
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
Materials Science, Ceramics
Rao Li, Chengkang Li, Mengfei Yan, Min Li, Changgui Lin, Shixun Dai, Baoan Song, Tiefeng Xu, Peiqing Zhang
Summary: This study fabricated convex microlens arrays on chalcogenide glass surface using femtosecond laser direct writing and precision molding. Regularly arranged damage craters were induced on silica glass surface by femtosecond laser writing. The surface of silica was then etched with hydrofluoric acid to obtain a smooth concave microlens, which was replicated on the surface of chalcogenide glass by precision molding. The resulting chalcogenide glass microlens array showed uniform structure, clear image, and good focusing effect. The method provides an efficient way to prepare large-scale microlens array masks and microlens.
CERAMICS INTERNATIONAL
(2023)
Article
Optics
Qi Hu, Haomin Guo, Haiwen Liu, Runmin Wu, Chengyun Zhang
Summary: The letter proposes a processing method based on laser-induced backward transfer (LIBT) technique, where the sample is placed in a bound state to achieve equal-thickness interference, and laser direct writing (LDW) ablation and interference effect are combined to induce 2D biperiodic microstructures. The effects of laser power and interference pattern on the microstructures are studied.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Xiaochuan Ding, Yao Zhao, Ali Hassan, Yunlu Sun, Zhishan Hou, Wei Xue, Yu Cao
Summary: With the increase in information density, signal crosstalk and crossover pose challenges to the further development of chip integration and packaging density. This study proposes a novel waveguide structure, the photonic jumper wire, to overcome technical restrictions in waveguide crossing and parallel line wrapping, thereby enabling improved integration of photonic chips.
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
Optics
Yujie Xiong, Shixiang Wang, Zhixiang Chen, Xiaoli Sun, Hongliang Liu, Yuechen Jia, Feng Chen
Summary: Waveguide lasers with compact packages have gained significant interest in recent years due to the development of integrated photonics and demand for miniaturized photonic devices. This study utilizes femtosecond laser direct writing (FsLDW) technology to fabricate cladding waveguides in Tm:YLF crystal. A low-threshold waveguide laser at 1877 nm is achieved using a Ti:sapphire laser pump at 779 nm. In addition, a pulsed Q-switched Tm:YLF waveguide laser is demonstrated by employing a Bi2Se3-based saturable absorber (SA) element. The experimental results highlight the potential of Tm:YLF and FsLDW in constructing compact mid-infrared lasers.
OPTICS AND LASER TECHNOLOGY
(2023)
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)
Review
Chemistry, Multidisciplinary
Shuai Xu, Yangfan Zhang, Ting Wang, Le Zhang
Summary: Micro-optics based on artificial adjustment of physical dimensions, such as phase, polarization, and wavelength, play a vital role in contemporary information optoelectronic technology and offer an important approach to overcome the future bottleneck of microelectronic technology. Geometric phase optical components, achieved through nanometer-scale unit structure arrangement, allow precise control of the properties of the light field, including polarization, phase, and amplitude, at the sub-wavelength scale. These components have gained extensive attention in the fields of holographic imaging and polarization optics. This paper reviews the physical mechanisms and research progress of various methods for preparing polarization converters and geometric phase optics using femtosecond laser technology, while discussing the challenges associated with fabricating ultrafast optical devices.
Article
Optics
Jiafeng Lu, Jing Tian, Bertrand Poumellec, Enrique Garcia-Caurel, Razvigor Ossikovski, Xianglong Zeng, Matthieu Lancry
Summary: Chiral nanostructures in glass can exhibit polarization-selective optical properties, which can be controlled using femtosecond laser direct writing. A phenomenological model based on two-layers phase shifters has been proposed to explain laser-induced optical chirality in initially achiral materials. This model allows for optical rotation in silica glass with the highest value reported in glass to date, providing new opportunities for photonics applications.
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Chemistry, Physical
J. Smolik, P. Knotek, J. Schwarz, E. Cernoskova, P. Kutalek, V. Kralova, L. Tichy
Summary: (English Summary:)
New microlenses with potential applications in optics were successfully created on the surfaces of glasses in the (PbO)(x)(Ga2O3)(1-x) system. The most promising composition found was (PbO)(0.747)(Ga2O3)(0.253), which showed the highest thermal stability and lowest fragility factor. The microlenses' height increased with higher exposition time and laser power density, while the threshold value for their formation decreased significantly with prolonged exposure time.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Shu-Yu Liang, Yue-Feng Liu, Shen-Yuan Wang, Zhi-Kun Ji, Hong Xia, Ben-Feng Bai, Hong-Bo Sun
Summary: This study develops a facile femtosecond laser direct writing method for fabricating arbitrarily patterned 2D perovskite films with well-defined profiles and uniform fluorescence properties. The high-resolution, reliable, and efficient patterning technique enables the creation of fluorescent anti-counterfeiting labels with high humidity stability.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Optics
Wenkai Yang, Lige Liu, Dashan Dong, Xin Zhang, Han Lin, Yunkun Wang, Hong Yang, Yunan Gao, Haizheng Zhong, Baohua Jia, Kebin Shi
Summary: This article introduces a novel approach to achieve efficient optical phase modulation by combining detour phase design with ultrathin perovskite films composed of nanosized crystalline particles. The binary amplitude patterning simplifies the fabrication process and enables high-performance 3D focusing and high-quality imaging capability.
PHOTONICS RESEARCH
(2022)
Article
Physics, Applied
Jialiang Zhang, Qing Yang, Qingyun Ma, Fangzheng Ren, Haoyu Li, Chengjun Zhang, Yang Cheng, Feng Chen
Summary: The study prepared a slippery surface with excellent self-cleaning, stability, and self-healing properties, inspired by the Nepenthes plant. The stretchability of the slippery surface is essential for application in flexible sensor surfaces. By using femtosecond laser, an interconnected porous structure was prepared on pre-stretched polydimethylsiloxane, and then infused with lubricant to create the slippery surface. This stretchable slippery surface maintained its performance even under tensile conditions and after multiple stretch cycles, demonstrating remarkable self-cleaning and chemical stability. The femtosecond laser direct writing technique holds promise for stable surfaces in various extreme environmental applications of flexible electronic devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Andrea Toulouse, Simon Thiele, Kai Hirzel, Michael Schmid, Ksenia Weber, Maria Zyrianova, Harlad Giessen, Alois M. Herkommer, Michael Heymann
Summary: Wrapped writing mode is a simple and cost-effective approach to multiphoton stereolithography, offering wide application prospects. By using a thin cling foil to shield the objective, it ensures writing resolution without direct contact. Moreover, this method is not limited by the working distance height of the objective and can be used for prototyping various formulations.
OPTICAL MATERIALS EXPRESS
(2022)
Review
Chemistry, Multidisciplinary
Shao-Feng Liu, Zheng-Wei Hou, Linhan Lin, Zhengcao Li, Hong-Bo Sun
Summary: 3D laser nanoprinting revolutionizes manufacturing by allowing maskless fabrication of 3D nanostructures at a resolution beyond the optical diffraction limit. It offers printed structures with unique physical, chemical, or mechanical properties not seen at the macro scale. However, its reliance on photopolymerization limits its usability to certain materials and functionalities. The ability to print diverse functional materials and the development of laser nanoprinting techniques beyond photopolymerization open up exciting new applications in nanophotonics and microelectronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shun-Xin Li, Hong Xia, Tian-Yu Liu, He Zhu, Jia-Cheng Feng, Yang An, Xu-Lin Zhang, Hong-Bo Sun
Summary: Nanostructures offer a cost-effective method to enhance the light-trapping capability of optoelectronic devices. However, the instability of perovskite materials restricts the practical application of nanostructured optoelectronic devices. In this study, in situ encapsulated moire lattice perovskite photodetectors were fabricated using nanograting-structured soft templates with relative rotation angles. The moire lattice structure improved the light-harvesting ability of the perovskite crystal, resulting in enhanced device performance and long-term stability.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Shuo Zhao, Zheyu Li, Suyao Yin, Qi-dai Chen, Hong-bo Sun, Liping Wen, Lei Jiang, Kai Sun
Summary: Biomimetic materials that mimic competitive interactions in ecosystems offer a promising solution to address bacterial resistance. This study demonstrates the feasibility of using spiny particles to compete with bacteria for nutrients and inhibit their growth without inducing bacterial resistance. The material also shows good biocompatibility, making it a potential candidate for applications in reducing bacterial resistance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Guan-Yao Huang, Linhan Lin, Shuang Zhao, Wenbin Li, Xiaonan Deng, Simian Zhang, Chen Wang, Xiao-Ze Li, Yan Zhang, Hong -Hua Fang, Yixuan Zou, Peng Li, Benfeng Bai, Hong -Bo Sun, Tairan Fu
Summary: Excitons are quasi-particles composed of electron-hole pairs and play a crucial role in determining the optical properties of monolayer TMDs. Manipulating their charge states in a reversible manner remains challenging. By utilizing femtosecond-laser-driven atomic defect generation, electron transfer, and surface molecular desorption/adsorption, we have developed an all-optical approach to control the charge states of excitons in monolayer MoS2, enabling reconfigurable optical encoding.
Article
Nanoscience & Nanotechnology
Ming-Yu Ma, Nian-Ke Chen, Dan Wang, Dong Han, Hong-Bo Sun, Shengbai Zhang, Xian-Bin Li
Summary: Using first-principles calculations, this study systematically investigates the properties of intrinsic defects and extrinsic dopants in monolayer AgI, revealing that Ag vacancy (VAg) and Be substitution on Ag site (BeAg) are the most promising p-type and n-type doping candidates, respectively, laying the foundation for the development of 2D electronic devices.
MATERIALS TODAY NANO
(2023)
Article
Materials Science, Multidisciplinary
Chaobin Bi, Lei Wang, Ruifan Li, Lin Zhao, Tianyu Xue, Chaoquan Hu, Xiaoyi Wang, Qidai Chen, Weitao Zheng
Summary: This study identifies stoichiometric germanium monotelluride solid solutions as promising phase change materials with dielectric-metallic transition (DMT) properties in the visible spectrum. These materials can be used as versatile platforms for fabricating programmable metasurfaces. The researchers demonstrate that the DMT performance of stoichiometric Ge0.9Sn0.1Te is superior to that of commonly studied non-stoichiometric PCMs, and that it can be written, erased, and modified at the subwavelength level using ultrashort-pulse lasers.
Article
Chemistry, Multidisciplinary
Shu-Yu Liang, Yue-Feng Liu, Zhi-Kun Ji, Shen-Yuan Wang, Hong Xia, Hong-Bo Sun
Summary: Researchers have developed a femtosecond laser-induced forward transfer (FsLIFT) technology for programmable fabrication of high-resolution full-color perovskite quantum dot (PQD) arrays and arbitrary micropatterns. This technology does not require chemical reagent treatment or mask contact, ensuring the preservation of the photophysical properties of PQDs. The high-resolution PQD array achieved using FsLIFT can facilitate the development of diverse practical applications based on patterned PQDs.
Article
Chemistry, Multidisciplinary
Xiao-Jie Wang, Shuang Zhao, Hong-Hua Fang, Renhao Xing, Yuan Chai, Xiao-Ze Li, Yun-Ke Zhou, Yan Zhang, Guan-Yao Huang, Cong Hu, Hong-Bo Sun
Summary: Laser-induced quantum emitters in aluminum nitride demonstrate robust emission with strong zero phonon line, narrow line width, and weak phonon side bands. These results illustrate the potential of laser writing to create high-quality quantum emitters for quantum technologies and provide further insight into laser writing defects in relevant materials.
Article
Optics
Yi-shi Xu, Zhen-ze Li, Zi-han Wang, Hong Xia, Yue-feng Liu, Saulius Juodkazis, Qi-dai Chen, Lei Wang
Summary: Femtosecond laser-induced deep-subwavelength structures have gained attention as a nanoscale surface texturization technique. Non-reciprocal writing via tailored optical far-field exposure is demonstrated, achieving continuous manipulation of ripple period on indium tin oxide (ITO) film. A full electromagnetic model is developed to explain the formation of ripples and the asymmetry of focal spot determines the non-reciprocity. This non-reciprocal writing technique offers new possibilities for precise and controllable nanoscale surface texturing.
Article
Chemistry, Multidisciplinary
Jian-Guan Hua, Hang Ren, Jiatai Huang, Mei-Ling Luan, Qi-Dai Chen, Saulius Juodkazis, Hong-Bo Sun
Summary: Femtosecond lasers enable flexible and thermal-damage-free ablation of solid materials, but true 3D nano-sculpturing has not been achieved due to technical challenges. This article proposes a new technique using cavitation dynamics and backside ablation to achieve stable material removal for precise 3D fabrication. With this technique, 3D devices with surface roughness less than 10 nm can be produced, enabling novel structural and functional micro-nano optics and non-silicon micro-electro-mechanical systems.
Article
Physics, Applied
Xiao-Jie Wang, Jia-Tai Huang, Hong-Hua Fang, Yun Zhao, Yuan Chai, Ben-Feng Bai, Hong-Bo Sun
Summary: By using dielectric microspheres for laser focusing, we have successfully created high brightness single-photon emitters in hexagonal boron nitride and enhanced the emission via photonic coupling. This approach provides a feasible way to generate high-performance single-photon emitters while enabling precise coupling with optical resonators.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Dong-Dong Han, Ye-Can Zhang, Ji-Chao Li, Hao Zhou, Jiang-Wei Mao, Yong-Lai Zhang, Hong-Bo Sun
Summary: This study presents a conformal active-material loading strategy using laser-induced graphene (LIG-O) electrodes for high-performance planar microsupercapacitors (MSCs). The planar MSCs showed a 10-fold improvement in areal capacitances and functioned as energy storage devices for a flexible ink display system.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Optics
Xue-Peng Pan, C. A. Sun, Shan-Ren Liu, B. O. Wang, Meng-Meng Gao, Q. Guo, Qi-Dai Chen, Hong-Bo Sun, Yong-Sen Yu
Summary: This paper proposes and demonstrates a novel high-sensitivity temperature sensor based on a chirped thin-core fiber Bragg grating Fabry-Perot interferometer (CTFBG-FPI) and the Vernier effect. Two CTFBG-FPIs with different interferometric cavity lengths are inscribed inside a thin-core fiber using femtosecond laser direct writing technology to form a Vernier effect system. The measured temperature sensitivity of this sensor is -1.084 nm/degrees C in a range of 40-90 degrees C. This sensor is expected to play a crucial role in precision temperature measurement applications.
Article
Optics
Dong-Dong Han, Yong -Lai Zhang, Zhao-Di Chen, Ji-Chao Li, Jia-Nan Ma, Jiang -Wei Mao, Hao Zhou, Hong -Bo Sun
Summary: This article reports a moisture responsive shape-morphing slippery surface that enables simultaneous moisture responsive shape-morphing and oil-lubricated water repellency. It is prepared by creating biomimetic microstructures on graphene oxide membrane and subsequent lubricating with a thin layer of oil on the laser structured reduced GO surface. The integration of this surface with an LRGO/GO bilayer actuator enables droplet sliding ability and enhanced moisture deformation performance, demonstrating versatility for active/passive trapping, droplet manipulation, and sensing.
OPTO-ELECTRONIC ADVANCES
(2023)
Article
Engineering, Electrical & Electronic
Xiao-Liang Ge, Jun-Hao Yang, Hang Ren, Zhi-Jun Qin, Qi-Dai Chen, Dong-Dong Han, Yong-Lai Zhang, Su Xu, Hong-Bo Sun
Summary: This study demonstrates the first experimental application of self-superhydrophobic antennas, which can maintain stability in terms of return loss, radiation pattern, and efficiency across multiple frequency bands. The compatibility of writing hydrophobic nanostructures on both dielectrics and metals with commercial printed circuitry techniques makes this technique a powerful and generalized solution for all-weather wireless communication systems.
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
(2023)
