Article
Chemistry, Multidisciplinary
Cristina Craciun, Florin Andrei, Anca Bonciu, Simona Brajnicov, Tatiana Tozar, Mihaela Filipescu, Alexandra Palla-Papavlu, Maria Dinescu
Summary: This work focuses on the application of MAPLE in the development of electrochemical sensors for nitrite detection in water. The modified carbon-based screen-printed electrodes with a composite coating of CNTs, chitosan, and C32H16FeN8 show improved electrochemical response towards nitrite oxidation. The MAPLE modified electrodes have a low detection limit of 0.12 mu M, making them highly useful for nitrite detection.
Article
Polymer Science
Peng Zhu, Huapeng Zhang, Hongwei Lu
Summary: The study focused on the impact of droplet evaporation on the preparation of PEI nanoparticles through thermally induced phase separation (TIPS). Results showed that simultaneous droplet evaporation and TIPS processes produced smaller and more uniform PEI nanoparticles compared to the sequential process. This work contributes to achieving small and uniform polymer nanoparticles through the TIPS process.
Article
Polymer Science
Valentina Grumezescu, Alexandru Mihai Grumezescu, Anton Ficai, Irina Negut, Bogdan Stefan Vasile, Bianca Galateanu, Ariana Hudita
Summary: This article presents the preparation and characterization of composite coatings based on hydroxyapatite (HAp), chitosan (CS), and FGF2, and investigates their effects on attachment, growth, and differentiation of cells through in vitro experiments. The results suggest that these coatings are suitable for bone tissue engineering applications.
Article
Chemistry, Physical
Xin Zhang, Hongwei Li, Guangda Shao, Jia Gao, Mei Zhan
Summary: This study investigates the effect of pulsed current on texture evolution behavior by comparing the evolution behaviors of a Ni-based superalloy under electrically-assisted and quasi-static tension. The results show that pulsed current promotes the evolution of easy-to-deform texture into hard one while inhibiting the further enhancement of the hard-to-deform texture's intensity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Yiwei Zhao, Haifeng Yuan, Xiaofei Zhang, Guobin Xue, Jiebin Tang, Yuke Chen, Xiaoli Zhang, Weijia Zhou, Hong Liu
Summary: Utilizing solar energy to produce water vapor for pure water production is an environmentally friendly way to alleviate global water shortage crisis. The Co@NCNTs/Si pillars structure efficiently achieves this process, purifying water from seawater and sewage.
CHINESE CHEMICAL LETTERS
(2021)
Article
Thermodynamics
Katsuyuki Hasegawa, Susumu Inasawa
Summary: We investigated the evaporation kinetics of water through an involatile oil layer with amphiphilic molecules dissolved in both phases. The concentration of amphiphilic molecules in the water phase increased as water evaporated, leading to their transfer to the oil phase. The volume of the oil phase increased, causing a decrease in the rate of water evaporation. However, the evaporation flux was also influenced by the amount of dissolved amphiphilic molecules in the oil phase.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Polymer Science
Maria Elena Zarif, Sasa Alexandra Yehia-Alexe, Bogdan Bita, Irina Negut, Claudiu Locovei, Andreea Groza
Summary: In this study, calcium phosphate-chitosan composite layers were synthesized, and the effect of substrate temperature on the incorporation of chitosan was investigated. The degree of chitosan incorporation significantly influenced the properties and adherence strength of the composite layers. The adherence strength was diminished after chitosan deposition.
Article
Chemistry, Multidisciplinary
Maura Cesaria, Marco Mazzeo, Gianluca Quarta, Muhammad Rizwan Aziz, Concetta Nobile, Sonia Carallo, Maurizio Martino, Lucio Calcagnile, Anna Paola Caricato
Summary: This study investigates the growth of CsPbBr3 films using thermally assisted prepared ablation targets through PLD, revealing deviations in film composition due to mass distribution of the PLD-generated plasma plume. It demonstrates that the cation stoichiometry of PLD-grown CsPbBr3 films varies depending on the composition and thermal treatment of the ablation target, contrary to conventional understanding. The enrichment in heavy elements and deficiency in lighter elements in the PLD-grown films are discussed in terms of optical response, providing guidance for future PLD-deposition strategies.
Review
Materials Science, Coatings & Films
Laurenz Thyen, Daniel Splith, Max Kneiss, Marius Grundmann, Holger von Wenckstern
Summary: We introduce a new technique, MARS-PLD, for area-selective physical vapor deposition. By using a movable mask, we can selectively mask any desired area on a substrate to create multinary material composition gradients. We demonstrated the capabilities of this method by fabricating material gradients in (Mg,Zn)O thin films and on predefined two-dimensional patterns.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Engineering, Environmental
Yuejiao Wang, Mengnan Huang, Haibiao Yu, Junshuo Cui, Jing Gao, Zhenning Lou, Xiaogeng Feng, Weijun Shan, Ying Xiong
Summary: Evaporation-induced self-assembly method (EISA) is a reliable and efficient technique for synthesizing porous materials. In this study, we successfully prepared hierarchical porous ionic liquid covalent organic polymers (HPnDNH2) for the removal of ReO4- /TcO4- using CTAB-assisted EISA. The CTAB not only acted as a soft template for pore formation, but also induced an ordered structure in the material. The HPnDNH2 showed higher adsorption capacity and faster kinetics compared to 1DNH2, and exhibited outstanding efficiency in removing ReO4- /TcO4- from alkaline nuclear waste.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoqing Li, Dandan Liu, Hao Sun, Xiaobing Li
Summary: The effect of oil-displacing agent composition on the oil/water interface stability of asphaltene-rich ASP flooding-produced water was investigated. Molecular dynamics simulation and experimental tests were conducted to study the adsorption behavior of oil displacement agents and asphaltenes on the interface, as well as the variations in interfacial properties. The results showed that the interaction between oil displacement agents and asphaltenes enhanced the interfacial film strength and impeded the oil/water separation process.
Article
Chemistry, Physical
Nipa Roy, Ammara Ejaz, Seungwon Jeon
Summary: By introducing an extended Ag nanoparticle network on the surface of carbon nanotubes, the number of electroactive sites is increased, significantly enhancing the catalytic activity of the oxygen reduction reaction; in addition, N-species modification can strengthen the charge interaction between neighboring N and Ag atoms, enhance the interaction with adsorbed oxygen species, further increasing the intrinsic activity of each electroactive site.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Lalit Kumar Sahoo, Dipali Basak, Ashok Kumar Mondal, Biswarup Satpati, Suraj Kumar Karan, Chinmay Basu
Summary: This study discussed the detailed process of preparing LiF/Ag targets using vacuum evaporation. The thickness of the fabricated targets was measured by alpha particle energy loss and estimated to be approximately 0.63 +/- 0.09 μm. The non-uniformity of the targets was within 6.50% and analyzed using a collimator. The surface morphology and elemental composition were investigated using TEM and EDX, while XPS confirmed the presence of LiF phase in the prepared targets. These targets were subsequently used for studying the 7Li(p,n) reaction at the FRENA facility in Kolkata.
Review
Biochemistry & Molecular Biology
Qintao Fan, Yasuhiro Maejima, Lai Wei, Shun Nakagama, Yuka Shiheido-Watanabe, Tetsuo Sasano
Summary: Mitochondria play beneficial and detrimental roles in cells, depending on their functions. The maintenance of cellular physiological state requires a series of mitochondrial quality control pathways. Recent studies have shown that mitochondria can be ejected from cells for degradation or transferred to other cells for metabolic support or signaling regulation. This review summarizes the current understanding of the regulation of mitochondrial transmigration across plasma membranes and discusses its functional significance, particularly in the pathogenesis of cardiovascular diseases. The unrevealed mechanisms underlying mitochondrial ejection and challenges in therapeutic applications are also addressed.
Article
Acoustics
Atalanti Christou, Ioannis J. Stavrou, Constantina P. Kapnissi-Christodoulou
Summary: A study optimized ultrasound-assisted extraction of polyphenols from carob pulp, resulting in higher antioxidant yield and shorter processing time compared to conventional extraction techniques. Solid-phase extraction was used as a clean-up strategy, revealing the importance of gallic acid in carob and the significant influence of ripening stage on carob composition.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Zan Gao, Jiadeng Zhu, Siavash Rajabpour, Kaushik Joshi, Malgorzata Kowalik, Brendan Croom, Yosyp Schwab, Liwen Zhang, Clifton Bumgardner, Kenneth R. Brown, Diana Burden, James William Klett, Adri C. T. van Duin, Leonid Zhigilei, Xiaodong Li
Article
Physics, Applied
Maxim Shugaev, Chengping Wu, Vladimir Yu Zaitsev, Leonid Zhigilei
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Miao He, Eaman T. Karim, Maxim Shugaev, Leonid Zhigilei
Summary: Molecular dynamics simulations were used to investigate the generation of vacancies at a crystal-liquid interface under conditions of undercooling for bcc Cr and fcc Ni metals. The results show that the vacancy concentrations produced can exceed equilibrium values by orders of magnitude. Different trends in vacancy concentration with temperature for Ni and Cr are related to the temperature dependences of the crystallization front velocity predicted for the two metals.
Article
Chemistry, Physical
Cheng-Yu Shih, Chaobo Chen, Christoph Rehbock, Anna Tymoczko, Ulf Wiedwald, Marius Kamp, Ulrich Schuermann, Lorenz Kienle, Stephan Barcikowski, Leonid Zhigilei
Summary: Pulsed laser ablation in liquids (PLAL) is a promising technique for generating colloidal alloy nanoparticles needed in various fields. The study combines computational and experimental methods to investigate the limited mixing of components and formation of different composition nanoparticles in the PLAL process from bilayer films.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Miao He, Kaushik Joshi, Leonid V. Zhigilei
Summary: The presence of a high-quality skin layer is found to increase both the Young's modulus and tensile strength of carbon nanofibers, contrary to the established notion of the deleterious effect of the skin layer. The ability of the skin layer to suppress crack nucleation at the core-skin interface is related to the strengthening of the nanofibers. Computational predictions suggest that new approaches to carbon fiber manufacturing and processing, leading to the generation of a high-quality skin layer while avoiding the introduction of structural defects at the core-skin interface, may significantly enhance the mechanical properties of carbon fibers.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Hao Huang, Leonid Zhigilei
Summary: Short-pulse laser irradiation of a colloidal solution of nanoparticles is an effective method for fragmenting the nanoparticles and producing smaller nanoparticles and atomic clusters with desired properties. A computational model capable of realistic treatment of various processes reveals two distinct channels of formation of the fragmentation products. The nanoparticles experience ultrafast quenching in the water environment, leading to high density of twin boundaries and crystal defects that enhance catalytic applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Multidisciplinary Sciences
Eaman T. Karim, Miao He, Ahmed Salhoumi, Leonid V. Zhigilei, Peter K. Galenko
Summary: The results from molecular dynamics (MD) simulations demonstrate a complex temperature dependence of the crystal-liquid interface velocity during crystallization, with an initial increase at moderate undercooling followed by a gradual decrease at deeper levels of undercooling. Existing theoretical models fail to fully describe the MD results, but using the hodograph equation can provide a better prediction across the entire temperature range.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Physics, Applied
Maxim Shugaev, Leonid Zhigilei
Summary: This study demonstrates that under nonablative thermoelastic irradiation regime, laser pulses with appropriate spot size and energy deposition depth can generate high-intensity surface acoustic waves (SAWs) in Si, with strain amplitudes reaching levels of 10^-4 to 10^-3. These strong SAWs have the potential to drive nonlinear profile sharpening and shock front formation during their propagation, presenting the feasibility of continuous generation of strong nonlinear pulses of SAWs for various applications.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Maxim Shugaev, Leonid Zhigilei
Summary: The phenomenon of acoustic desorption is studied in atomistic simulations, showing a nonthermal nature with a sharp threshold-like dependence on binding energy and mass. Nonlinear sharpening of acoustic waves during propagation plays a key role in creating conditions for desorption/exfoliation. The study has practical implications for laser-induced experiments and new approaches in thin film growth and catalytic activity regeneration.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Editorial Material
Physics, Multidisciplinary
A. Ziefuss, S. Barcikowski, L. Zhigilei
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Article
Physics, Multidisciplinary
Hao Huang, Leonid Zhigilei
Summary: In this study, the effect of energy density on the fragmentation mechanisms in laser fragmentation in liquid was investigated. It was found that the decrease in absorbed laser energy led to the transition from strong phase explosion to nanoparticle fragmentation, resulting in the formation of a core-satellite structure. In the regime of mild phase explosion, some of the hot metal droplets generated by explosive decomposition were reflected back to form a central nanoparticle. At lower energy densities, intense evaporation from the nanoparticle surface and condensation of metal vapor led to the formation of a core-satellite structure.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Editorial Material
Optics
Chaobo Chen, Leonid V. Zhigilei
Summary: Ultrafast pump-probe microscopy has provided new insights into the complex dynamics of laser-induced explosive phase transformations and highlighted the importance of close integration of experimental, computational, and theoretical efforts.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Chemistry, Physical
Miao He, Mikhail I. Arefev, Kaushik Joshi, Leonid Zhigilei
Summary: The mechanisms of tensile deformation and fracture of carbon fibers were investigated through large-scale molecular dynamics simulations. The simulations revealed that the nanostructure of carbon fibers consists of a mixture of stiff and soft regions, allowing for continuous nanoscale load redistribution and enhancing the strength and fracture strain of the fibers.
Article
Multidisciplinary Sciences
Mikhail I. Arefev, Maxim V. Shugaev, Leonid V. Zhigilei
Summary: Melting phenomenon, although well studied, still reveals new findings when triggered by laser excitation, as shown by experiments of nanosecond-scale melting. Atomistic simulations demonstrate that a combined effect of lattice superheating and relaxation of laser-induced stresses ensures the dominance of homogeneous melting mechanism. However, the much longer melting times and the contribution of heterogeneous melting observed in experiments cannot be explained by adjusting the electron-phonon coupling strength.
Article
Materials Science, Multidisciplinary
Chaobo Chen, Leonid V. Zhigilei
Summary: The mechanisms of picosecond pulse laser ablation in liquid were investigated through large-scale atomistic simulations on FeNi targets. Three fluence regimes were identified, each with different dominant mechanisms of material ejection and nanoparticle formation. The simulations provide a comprehensive understanding of the ablation dynamics and can aid in the interpretation of experimental results. Rating: 8/10
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)