Article
Polymer Science
Xingyu Wu, Mehdi Belqat, Benjamin Leuschel, Guillaume Noirbent, Frederic Dumur, Karine Mougin, Arnaud Spangenberg
Summary: This study utilizes fluorescence lifetime measurements to investigate two-photon polymerization. A molecular rotor is successfully used as a viscosity probe to reveal heterogeneity in multi-material microstructures made by two-photon polymerization. Additionally, a correlation between laser intensity and local viscosity changes in the polymerized microstructures is established.
Article
Polymer Science
Zhi-Xiong Fei, Ji Lan, Jingrui Sun, Chenxiao Yin, Ling-Ying Shi
Summary: In this study, flexible ionic conductors with excellent mechanical properties, stability and conductivity were successfully fabricated using a green and efficient technique. The ionic conductors were composed of a polymerization of polymerizable deep eutectic solvent (PDES) reinforced by hydroxyethyl cellulose (HEC). The addition of HEC enhanced the mechanical strength of the ionic conductor, and its electrical conductivity reached 2 x 10-2 S/m at room temperature. A flexible sensor was assembled to accurately detect finger movements and monitor environmental temperature changes, showing the potential of these conductors in multifunctional sensors with long-term durability.
Article
Polymer Science
Qiujie Zhao, Peter Bennington, Paul F. Nealey, Shrayesh N. Patel, Christopher M. Evans
Summary: Acrylate-based polymerized ionic liquids (PILs) with different cations and anions were spin coated onto gold interdigitated electrodes on silica to study the nanoconfinement effects on ion transport. The results showed a significant reduction in in-plane conductivity in some thin PIL films with thickness below 100 nm, with Am BF4 PIL exhibiting the largest conductivity drop. The study also discussed the potential factors contributing to the difference in conductivity drop, such as differences in interfacial layer thickness and potential changes in glass transition temperature under confinement.
Article
Polymer Science
Katelyn F. Long, Howard Wang, Trace T. Dimos, Christopher N. Bowman
Summary: The kinetic effects of thiol substitution and functionality in thiol-Michael reactions were examined, showing that different systems exhibit varying reaction rates and conversions. For monofunctional systems, electronic and steric interactions play a role in determining reaction rates, while in systems with multifunctional thiols, the substitution and functionality lead to different outcomes.
Article
Engineering, Manufacturing
Fei Liu, Hanwei He, Lijin Cheng, Hao Li, Mohsen Abdel-Naeim Hassan Mohamed, Ning Hu, Shaojun Liu
Summary: Temperature-field-assisted vat photopolymerization was used to prepare Mg2TiO4 ceramics with reduced defects and dielectric loss. The excellent properties were attributed to decreased viscosity and increased curing depth of ceramic slurry due to temperature increase. The technique resulted in successful printing of Mg2TiO4 ceramics with high solid loading, fewer defects, and comparable quality factor to dry-pressed ceramics.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Environmental
Zihui Wang, Langming Bai, Jinlong Wang, Qian Zhao, Heng Liang, Guibai Li
Summary: A photopolymerized thin-film composite NF membrane with a ridged surface was developed by integrating interfacial polymerization and photopolymerization for environmental water treatment. The effects of light on membrane surface and physicochemical properties were investigated and confirmed using infrared thermal images and response surface methodology. Molecular dynamics simulations and density functional theory simulations were conducted to understand the crosslinking mechanism and illustrate the surface characteristics and selective separation performance of the membrane. The photopolymerized membrane showed improved permeability, selective separation efficiency, organic contaminant removal, and antifouling capacity compared to the pristine membrane, making it a promising solution for environmental challenges.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Andrea Camposeo, Aristein Arkadii, Luigi Romano, Francesca D'Elia, Filippo Fabbri, Eyal Zussman, Dario Pisignano
Summary: This study investigates the impact of layer thickness on photopolymerization through an optical system. It reveals that decreasing polymerization volume increases the time needed for complete curing. These findings are important for optimizing photocuring-based additive manufacturing.
ADDITIVE MANUFACTURING
(2022)
Article
Pharmacology & Pharmacy
Jozsef Bako, Ferenc Toth, Jozsef Gall, Renato Kovacs, Attila Csik, Istvan Varga, Anton Sculean, Romana Zelko, Csaba Hegedus
Summary: The development of a pH-sensitive nanocomposite hydrogel (NCHG) as a drug delivery system for dental treatment shows great potential. The NCHG, prepared through blue-light photopolymerization, exhibits a short setting time and stable structure. The released drugs from the NCHG can maintain an ideal concentration for an extended period of time in the periodontal pocket.
Article
Polymer Science
Sachio Yamamoto, Shoko Yano, Mitsuhiro Kinoshita, Shigeo Suzuki
Summary: An improved method for online preconcentration, derivatization, and separation of phosphorylated compounds was developed using a Phos-tag acrylamide gel in a polydimethylsiloxane/glass multichannel microfluidic chip. Phosphorylated peptides were specifically concentrated in the gel and derivatized with DTAF for sensitive analysis. This method enabled the sensitive analysis of phosphorylated peptides through a complex elution process.
Article
Polymer Science
Gang Wang, Yanran Li, Xiayun Huang, Daoyong Chen
Summary: The research team successfully fabricated a pure bluish-green phase polydiacetylene and its composites through a facile method, and found that the addition of metal ions not only increases the conjugation length, but also tunes the type of optical absorption.
Article
Acoustics
Noko Kuratomo, Haruna Miyakawa, Soh Masuko, Toshimasa Yamanaka, Keiichi Zempo
Summary: Utilizing an On-Demand pinpoint audio system can reduce the impact of sound emitted by digital signage on passersby, maintaining acoustic comfort and improving advertisement recallability. Experimental results indicate that music-dominating advertisements are more memorable, suggesting the potential for personalization of advertising information and perceptual spaces.
Article
Dentistry, Oral Surgery & Medicine
Hamad Algamaiah, Nikolaos Silikas, David C. Watts
Summary: The study found that PFill group with addition fragmentation chain transfer (AFCT) agent had significantly lower polymerization shrinkage rates compared to the comparator ECeram, regardless of the irradiation protocol. In contrast, the PFlow group exhibited comparable results to EFlow and ECeram under different irradiation protocols. Overall, PFill consistently showed lower shrinkage stress results than ECeram and were comparable for both high irradiance protocols.
Article
Pharmacology & Pharmacy
Natalia Rekowska, Jennifer Huling, Andreas Brietzke, Daniela Arbeiter, Thomas Eickner, Jan Konasch, Alexander Riess, Robert Mau, Hermann Seitz, Niels Grabow, Michael Teske
Summary: Novel fabrication techniques based on photopolymerization enable the preparation of complex multi-material constructs for biomedical applications. Our study analyzed the properties of photopolymerized poly(ethyleneglycol) diacrylate (PEGDA) and specific copolymers with different photoinitiator (PI) concentrations, and confirmed their biocompatibility and potential for personalized medical devices.
Article
Engineering, Chemical
Theodore J. Hammer, Coleen Pugh, Mark D. Soucek
Summary: A series of branched UV-curable polyester oligomers were successfully synthesized and their thermal, rheological, and mechanical properties were investigated. The study revealed that the extent of branching and the functionality of the end group affect the performance of the polyester resins. Optimizing the extent of branching was found to be important for UV-curable polyester coating resins.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Analytical
Tingting Zhao, Xinyue Ding, Chenchen Lin, Xucong Lin, Zenghong Xie
Summary: A photo-initiated polymerized oligonucleotide-grafted hydrophilic affinity monolithic column was synthesized in situ for selective in-tube solid phase micro-extraction (IT-SPME) protocol towards sensitive detection of ochratoxin A (OTA). The method showed highly specific online recognition performance with extremely low nonspecific adsorption, indicating promising potential for trace mycotoxin detection.
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
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
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
Optics
Ze-Zheng Li, Zhen-Nan Tian, Zhong-Tian Li, Yang Ouyang, Qi-Dai Chen, Hong-Bo Sun
Summary: The composite waveguide method is proposed to increase the range of photon propagation constant beta, which significantly expands the variation range of beta. With this method, the researchers successfully constructed the most compact FsLDW directional couplers and achieved the reconstruction of the Hamiltonian of a Hermitian array. This study represents a further step towards fine control of waveguide coupling and compact integration of FsLDW photonic integrated circuits.
PHOTONICS RESEARCH
(2023)
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
Chemistry, Physical
Monan Liu, Qing Wang, Ai-Wu Li, Hong-Bo Sun
Summary: This article summarizes recent research and proposes an all-light solution using graphene-oxide-based soft robots. The study demonstrates that lasers can precisely define actuators to form joints and facilitate efficient energy storage and release, enabling complex motion control.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
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)
