Article
Optics
Jessy Simon, B. Anugop, V. P. N. Nampoori, M. Kailasnath
Summary: Bimetallic Au/Ag nanoparticles were successfully synthesized using laser ablation technique, with silver plate ablated in colloidal gold solution. Confirmation of bimetallic nanoparticles formation was done through TEM and absorption spectroscopy, while stability was established through zeta potential analysis and thermal diffusivity was determined with a dual-beam mode matched thermal lens technique.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Taiping Hu, Pengfei Li, Wei Zhang, Yixing Ye, Jun Liu, Yunyu Cai, Guofeng Zhang, Kai Dai, Changhao Liang
Summary: Designing high-performance catalysts for electrocatalytic hydrogen production remains a significant challenge. Small-size bimetallic alloy nanoparticles have garnered considerable attention in the field of electrocatalysis due to their large exposure of effective active sites and optimal geometric/electronic effects. In this study, ultra-small bimetallic PtM (M=Ni, Co) alloy nanoparticles (approximately 1.7 nm) were synthesized on carbon supports through laser irradiation in liquids. This unique method leverages the effective absorption of pulse laser energy by carbon supports to generate high temperatures, enabling the reduction of metallic ions precursors by ethanol molecules and the subsequent formation of alloy nanoparticles. The resulting bimetallic PtNi alloy nanoparticles exhibited significantly improved catalytic performance in the hydrogen evolution reaction (HER).
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biophysics
Han -Wei Chu, Binesh Unnikrishnan, Amit Nain, Scott G. Harroun, Huan-Tsung Chang, Chih-Ching Huang
Summary: This study demonstrates the potential of using cluster ions generated from pulsed laser irradiation of aggregated nanoparticles in bioassays. By treating silver and gold nanoparticles with thrombin and analyzing the resulting clots, intense Ag-Au alloy cluster ions were used to detect thrombin concentration in human plasma, showing a dynamic range of 2.5-50 pM.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
F. Fraggelakis, G. D. Tsibidis, E. Stratakis
Summary: This study investigates the fundamental mechanisms for the formation of laser-induced topographies on stainless steel using DLIP and ULP, enhancing control over the structure and providing insights into the formation process.
Article
Chemistry, Physical
Taiping Hu, Yisong Fan, Yixing Ye, Yunyu Cai, Jun Liu, Yao Ma, Pengfei Li, Changhao Liang
Summary: A simple method to prepare PtX (X = Ag, Cu, Co, Ni) alloy nanomaterials by laser irradiation is reported in this study. The experimental results show that photothermal evaporation induced by laser irradiation can cause the fragmentation of bulk Pt and alloying with Ag atoms extracted from Ag+, resulting in the formation of PtAg alloys. These alloys were used as electrocatalysts for the hydrogen evolution reaction, showing potential application.
Article
Chemistry, Physical
Debajyoti Bhaduri, Tina Ghara, Pavel Penchev, Soumitra Paul, Catalin Pruncu, Stefan Dimov, David Morgan
Summary: A novel LP strategy was proposed to improve the re-melting of aluminium alloys by introducing a thermally insulating ceramic baseplate, resulting in significant reductions in surface roughness and residual stresses. The study highlights the importance of controlling heat dissipation in laser polishing of thermally conductive materials to achieve desired surface integrity properties.
APPLIED SURFACE SCIENCE
(2021)
Review
Materials Science, Multidisciplinary
Yoshie Ishikawa, Takeshi Tsuji, Shota Sakaki, Naoto Koshizaki
Summary: This review comprehensively summarizes the historical background, basic mechanism, parameters affecting particle size and morphology, possible application examples, specialized issues for characterization and mass production, and future directions of pulsed laser melting in liquid (PLML) for fabricating crystalline sub-micrometer particles (SMPs).
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Elham Mohebi, Amir Hossein Sari, Davoud Dorranian, Shaghayegh AdibAmini
Summary: The main goal of this experimental study is to investigate the impact of different silver concentrations on the optical characteristics of Ag-shell/Au-core bimetallic nanoparticles. The nanoparticles are created through the pulsed laser ablation in liquid (PLAL) technique and chemical reduction process. Various characterization methods such as XRD, spectroscopy, DLS, EDS, PL, and FT-IR are used to identify and analyze the nanoparticles. The reactivity and catalytic properties of the bimetallic system with variable silver concentration's shell thickness are also examined.
Article
Physics, Applied
Guillermo Gonzalez-Rubio, Wiebke Albrecht
Summary: Gold nanocrystals have attracted significant interest in the scientific community due to their ability to interact with light. When irradiated with ultrafast pulsed lasers, gold nanocrystals undergo rapid temperature increase, leading to morphological and structural modifications and the formation of metastable nanostructures. The control of heating and cooling dynamics is crucial for achieving desired reshaping and restructuring of gold nanocrystals. Advanced electron microscopy techniques and single-particle studies are necessary for understanding the atomic mechanisms behind these modifications. Ultrafast laser irradiation represents a unique tool for fabricating unprecedented nanomaterials and catalysts.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Masayuki Yoshida, Itsuki Nishibata, Tomoki Matsuda, Yusuke Ito, Naohiko Sugita, Ayumi Shiro, Takahisa Shobu, Kazuto Arakawa, Akio Hirose, Tomokazu Sano
Summary: This study investigates the influence of pulse duration on the mechanical properties and dislocation density of an aluminum alloy treated using dry laser peening. The results show that a pulse duration of 1 ps achieves the maximum peening effects by generating the strongest shock pressure, suppressing optical nonlinear effects, and minimizing thermal effects.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Andrzej Grabowski, Tomasz Florian, Jakub Wieczorek, Marcin Adamiak
Summary: Experimental data on the structure, chemical composition, and wear resistance of a titanium alloy Ti6Al4V after pulsed laser treatment show that rapid solidification forms a new microstructure, affecting the surface's topography. Different laser pulse parameters can lead to desired surface texture, and femtosecond and picosecond pulse treatment creates micro/nano structures with good wear resistance. Nanosecond laser treatment results in an extended metal-oxide foam surface with transformed alpha-Ti phase.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Jung Won Choi, Daseul Ham, Seonghyun Han, Do Young Noh, Hyon Chol Kang
Summary: This study reported the soft wetting behavior of cobalt nanoparticles on a soft sapphire substrate during pulsed laser-induced dewetting, showing unique wetting angles and nanoscale structures. The observed soft wetting behavior strongly indicates that the sapphire substrate underwent deformable changes during PLID.
Article
Metallurgy & Metallurgical Engineering
S. Fajardo, L. Miguelez, M. A. Arenas, J. de Damborenea, I Llorente, S. Feliu
Summary: The effect of laser surface melting on the corrosion resistance of AZ31 Mg alloy was investigated. The results showed that laser treatment significantly increased the corrosion resistance of the alloy, which could be attributed to the increased surface concentration and the formation of a passive-like region.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Chemistry, Physical
Taylor N. Lewis, Chen Wang, John R. Daniel, Madhav Dhital, Christopher J. Bardeen, Boerge Hemmerling
Summary: Research indicates that pulsed-laser ablation of stable, non-toxic mixtures of aluminum with alkali or alkaline earth chlorides can provide a reliable source of cold AlCl molecules. The chemical identity of XCln and the Al : XCln molar ratio affect the yield of AlCl, while the non-equilibrium recombination process limits the production of AlCl.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Engineering, Chemical
Hiroki Yoshihara, Naoto Koshizaki, Yuji Yamauchi, Yoshie Ishikawa
Summary: This study investigates the effect of viscosity on the formation process of spherical submicrometer particles (SMPs) fabricated by pulsed laser melting in liquid (PLML). It is found that in highly viscous liquid, smaller SMPs are generated due to the ineffective aggregation process. Simulation results show that the temporal evolution of SMP size can be controlled by viscosity, prior disaggregation time, and liquid temperature, considering constraints such as non-melting at larger sizes and evaporation for smaller particles due to overheating.
Article
Chemistry, Physical
Kentaro Suehara, Ryosuke Takai, Yoshie Ishikawa, Naoto Koshizaki, Kazunobu Omura, Harunori Nagata, Yuji Yamauchi
Summary: Pulsed Laser Melting in Liquid (PLML) is a technique used to fabricate submicrometer spherical particles (SMPs) by transiently heating raw particles above the melting point in liquid and inducing thermally induced bubbles. The reduction of metal-oxide nanoparticles in ethanol during PLML process is mediated by molecules decomposed from ethanol, such as ethylene, resulting in a decrease in Gibbs free energies of oxide reduction reactions.
Review
Chemistry, Multidisciplinary
Zaneta Swiatkowska-Warkocka
Summary: This review article discusses the synthesis and applications of CuFe bimetallic nanoparticles, highlighting their importance in material science and potential roles in catalysis.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Yasunori Tabayashi, Shota Sakaki, Naoto Koshizaki, Yuji Yamauchi, Yoshie Ishikawa
Summary: Pulsed laser melting in liquid (PLML) is a technique used to produce submicrometer spherical particles (SMPs). By monitoring transmittance measurements of monodisperse Au SMP colloidal solutions on a transient time scale, the temporal dependence of the thickness of thermally induced nanobubbles (TINBs) and the pressure within the bubble can be studied. These TINBs play a crucial role in promoting the formation of large particles via particle merging during laser heating in the PLML process.
Article
Chemistry, Multidisciplinary
Daizen Nakamura, Naoto Koshizaki, Nobuyuki Shishido, Shoji Kamiya, Yoshie Ishikawa
Summary: Hard ceramic carbide particles are typically angulated, making it difficult to control particle size below the micrometer scale. By using instantaneous pulsed laser heating in a liquid, submicrometer particles with spherical shape can be experimentally fabricated, showing potential for mechanical applications. Mechanical behaviors of these particles were examined through compressing them on various substrates, providing insights into their fracture strength and local hardness measurement.
Article
Chemistry, Multidisciplinary
Anton A. Popov, Zaneta Swiatkowska-Warkocka, Marta Marszalek, Gleb Tselikov, Ivan Zelepukin, Ahmed Al-Kattan, Sergey M. Deyev, Sergey M. Klimentov, Tatiana E. Itina, Andrei Kabashin
Summary: This research describes a method to synthesize nanocomposites by laser ablation and gold nanoparticles, which combines magnetic and plasmonic properties and has potential applications in the treatment of cancer and other diseases.
Article
Nanoscience & Nanotechnology
Yoshihiro Shimoyama, Kenji Koga, Hiroyasu Tabe, Yusuke Yamada, Yoshihiro Kon, Dachao Hong
Summary: Ruthenium oxide nanoparticles embedded in graphitic carbon nitride were successfully prepared and demonstrated to be effective photocatalysts for H-2 evolution, with improved efficiency under basic pH conditions. The nanoparticles functioned as oxidation sites for alkanolamines conversion, leading to enhanced H-2 evolution rates. The nanocomposites showed saturation behavior in H-2 evolution rates, indicating equilibrium adsorption of hydroxyl groups on the nanoparticle surfaces.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Hao Yu, Mohammad Sadegh Shakeri, Abbas Sabahi Namini, Seyed Ali Delbari, Quyet Van Le, Jiyoung Lee, Soo Young Kim, Sea-Hoon Lee, Ho Won Jang, Zaneta Swiatkowska-Warkocka, Mohammadreza Shokouhimehr
Summary: The microstructural characterization of TiB2-20SiC-5Si(3)N(4) composite prepared by spark plasma sintering (SPS) was investigated using HRTEM and XPS. In-situ TiN phase, TiBxNy solid solution, and h-BN phase were formed during the SPS process. Strong interfaces between TiB2, SiC, and BN phases were observed, while weak interfaces were generated due to the formation of amorphous phases. Structural defects and distortions in TiB2 and h-BN were identified as the main channels for the diffusion and transportation of boron atoms into the Si3N4 matrix for the formation of in-situ h-BN phase.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Dachao Hong, Aditya Sharma, Dianping Jiang, Elena Stellino, Tomohiro Ishiyama, Paolo Postorino, Ernesto Placidi, Yoshihiro Kon, Kenji Koga
Summary: Regulating H-2 production from formic acid dehydrogenation using recyclable photocatalyst films is an important approach. In this study, Au-Cu nanoalloys were successfully prepared and deposited on TiO2 photocatalyst films. The Au-Cu/TiO2 films exhibited high efficiency for H-2 production under LED irradiation. Au20Cu80/TiO2 showed the highest H-2 evolution rate.
Article
Chemistry, Multidisciplinary
Xiaoyu Tang, Xiaosa Xu, Miao Bai, Min Zhang, Heling Wang, Zhiqiao Wang, Ahu Shao, Hongqing Wang, Yue Ma
Summary: PEO-based solid polymer electrolyte has interfacial compatibility with high-capacity metallic anodes in all-solid-state batteries (ASSBs). However, the construction of the prototype is hindered by parasitic ohmic resistance, insufficient ionic pathway of the high loading cathode, and PEO oxidation tendency. A laser-assisted strategy is presented for ultra-efficient cathode modification, which involves constructing a continuous, multi-scale artificial cathode/electrolyte interface (CEI) using a pulsed laser beam. This strategy provides unprecedented opportunities for high-energy-density polymer-based ASSBs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hongyue Wang, Peng Liu, Miao Zhang, Bin Han, Guanghui Wang, Jingyun Zhang, Siliang Hu, Huixin Li, Yangyang Guo, Guanguan Zhao, Jialiang Gao, Zeyi Cheng, Hongqiang Wang
Summary: A strategy of inch-scale perovskite microwire film fabrication using spray-coating deposition of intermediate suspension is presented, leading to high flatness and narrow performance distribution of the microwire film for efficient photodetector arrays.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Huixin Li, Pengfei Guo, Hongyue Wang, Yangyang Guo, Yang Wei, Fengren Cao, Liang Li, Hongqiang Wang
Summary: This study systematically analyzes the recent achievements and specific functionalities of embedding a series of nanocrystals (NCs) in perovskite solar cells (PSCs). The functionalities include carrier dynamic modulation, crystallinity enhancement, defect passivation, light trapping, and stability enhancement. The study provides a guide for developing high-performance PSCs with NCs-based additives.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mandeep K. Chahal, Masato Sumita, Jan Labuta, Daniel T. Payne, Jonathan P. Hill, Yusuke Yamauchi, Takashi Nakanishi, Takeshi Tanaka, Hiromichi Kataura, Kenji Koga, Hiroyuki Miyamura, Yoshihiro Kon, Dachao Hong, Shinsuke Ishihara
Summary: This study reports a chemiresistive sensor array composed of modified hydroxylamine salts and single-walled carbon nanotubes that can selectively detect formaldehyde vapor. By screening different types of salts, an ideal sensor array has been identified that can clearly discriminate trace amounts of formaldehyde from acetaldehyde. This system offers portable and reliable chemical sensors for advanced environmental monitoring and healthcare applications.
Article
Chemistry, Multidisciplinary
Wan Li, Tianxiang Li, Yu Tong, Yaochen Li, Hao Wang, Heng Qi, Kun Wang, Hongqiang Wang
Summary: This study reports an effective strategy to significantly enhance the performance of perovskite LEDs by introducing an interface modifier that reduces interfacial defects and improves perovskite crystallinity. The strategy successfully eliminates the humidity-induced aggregation of self-assembled monolayer, resulting in improved photoluminescence efficiency and more efficient charge injection. The green perovskite LEDs achieved a high external quantum efficiency and luminance, representing record values for perovskite LEDs processed under ambient-air conditions.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yangyang Guo, Zeyi Cheng, Penghui Yang, Miao Zhang, Huixin Li, Jialiang Gao, Peng Liu, Siliang Hu, Hongyue Wang, Hongqiang Wang
Summary: This work presents a strategy of laser-induced transient nonequilibrium thermodynamic processes for synthesizing shape-controlled colloidal perovskite nanocrystals in the liquid phase. Hexagonal CsPbBr3 nanocrystals and cubic CsBr nanocrystals were successfully achieved with tunable band structures and varied photoluminescence emission. Green perovskite light-emitting diodes (LEDs) based on hexagonal CsPbBr3 nanocrystals were fabricated, showing promising application in LEDs.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yanxia Su, Zheshen Mu, Yuqian Qiu, Guangshen Jiang, Atef Shenouda, Xinren Zhang, Fei Xu, Hongqiang Wang
Summary: In this study, nanosized TiO2 fillers were prepared by laser irradiation and coated with polyacetonitrile to improve the practical applications of PEO-based solid polymer electrolytes in lithium metal batteries. The electrolytes with nanosized TiO2 showed high ionic conductivity, Li+ transference number, electrochemical stability, and mechanical robustness. The lithium symmetric batteries and full Li metal batteries with nanosized TiO2 composite solid electrolytes exhibited stable cycling life and superior durability, and the proof-of-concept pouch cells demonstrated excellent safety performance under harsh conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
