Article
Chemistry, Physical
Elena Fakhrutdinova, Olesia Reutova, Liubov Maliy, Tamara Kharlamova, Olga Vodyankina, Valery Svetlichnyi
Summary: In this study, the use of pristine and Pt-modified dark titanium dioxide for photocatalytic hydrogen evolution was investigated. The samples demonstrated high photocatalytic efficiency under soft UV and blue LED irradiation. The effects of thermal treatment and platinum modification on the dark titania materials were studied, and optimal experimental conditions were determined.
Review
Physics, Multidisciplinary
Laysa M. Frias Batista, Ashish Nag, Victoria K. Meader, Katharine Moore Tibbetts
Summary: Nanomaterials with tailored structures and surface chemistry are in high demand for their applications in various fields. Laser-synthesis techniques, particularly laser ablation in liquid (LAL), have attracted attention for their potential in producing unique nanomaterials. This review focuses on the emerging reactive laser-synthesis methods and their chemical reaction mechanisms, providing guidance for researchers interested in designing novel nanomaterial production.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2022)
Article
Physics, Multidisciplinary
C. Tailliez, X. Davoine, A. Debayle, L. Gremillet, L. Berge
Summary: Through multidimensional particle-in-cell simulations, we demonstrate the generation of high-field THz bursts from helium gas plasmas embedded in strong magnetic fields. Adjusting the plasma density and selecting a suitable ratio between relativistic electron cyclotron and plasma frequencies are necessary for efficient THz generation.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Boris P. Aduev, Yaroslav V. Kraft, Denis R. Nurmukhametov, Gennadiy M. Belokurov, Natalia V. Nelubina, Zinfer R. Ismagilov
Summary: The possibility of hydrogen production by using laser pulses on a suspension containing aluminum nanoparticles in water is demonstrated. The aluminum nanoparticles absorb the laser energy, disrupt the oxide film, and react with water to produce hydrogen. The maximum hydrogen yield is independent of the energy density of the laser radiation, while the time to reach the maximum yield decreases with increasing energy density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Physics, Multidisciplinary
M. Lewenstein, M. F. Ciappina, E. Pisanty, J. Rivera-Dean, P. Stammer, Th Lamprou, P. Tzallas
Summary: The study shows that intense laser-atom interactions can generate highly non-classical light states by using high-harmonic generation in atoms, leading to the production of Schrodinger cat states. Controlling these non-classical states may be achieved through exploring physical processes relevant to high-harmonic generation.
Article
Chemistry, Physical
Atefeh Nasri, Babak Jaleh, Ensiye Shabanlou, Mahmoud Nasrollahzadeh, Hossein Ali Khonakdar, Benjamin Kruppke
Summary: The growing energy requirements and environmental issues have led to the exploration of pure and sustainable energy generation, storage, and usage technologies. The efficient production of hydrogen (H-2) offers a clean fuel source for various applications, and methods such as hydrolysis, electrochemical, and photocatalytic processes have proven to be effective and affordable. Additionally, there is increasing research interest in utilizing ionic liquid-based catalysts for the cost-effective and straightforward production of high purity H-2.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Jiyu Xu, Daqiang Chen, Sheng Meng
Summary: Understanding the photoexcitation dynamics in liquid water is crucial, but tracking the initial atomistic movements and energy transfer pathways post laser irradiation is challenging due to the complex interaction and ultrafast timescale. The study revealed that the strong-field effects and electronic excitations dominate the heating process in water.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Optics
Yuxuan Chen, Yuhang He, Liyuan Liu, Zhen Tian, Jianming Dai
Summary: In this experiment, we generate broadband coherent terahertz (THz) radiation through the interaction of colliding laser pulses with gas plasma. The THz radiation shows a dipole-like emission pattern perpendicular to the laser propagation direction, with the detected peak electric field one order of magnitude higher than that by single pulse excitation. This study provides insights into laser-plasma interaction and offers a promising option for plasma-based THz sources.
PHOTONICS RESEARCH
(2023)
Article
Optics
Zhuang-Wei Ding, Yi-Ben Wang, Zheng-Liang Li, Xue-Bin Bian
Summary: High-order harmonic generation (HHG) can be produced by the interaction of intense laser pulses with liquid targets, which is a nonlinear and nonperturbative optical phenomenon. The computational efficiency of theoretical studies on HHG in liquids based on full dimensional simulations is very low. In this study, an efficient numerical method based on statistical mechanics in two-dimensional space is developed, which accurately reproduces experimental HHG measurements. The findings also reveal that near-circularly-polarized harmonics with different ellipticities can be generated in counterrotating driving lasers, and the cutoff energy of HHG in counter- and corotating driving lasers shows a similar dependence on laser field strength and wavelength as that in the case of a linearly polarized driving laser field. This work paves the way for controlling ultrafast electron dynamics in liquids by manipulating laser fields.
Article
Chemistry, Physical
Jifeng Deng, Kurbannisa Kadeer, Chaoyuan Hu, Zewei Xie, Yu Shi, Xiao Liu, Lei Xie, Jinrong Xu, Jie Zheng, Xingguo Li
Summary: In this study, a sponge catalyst for hydrogen generation from liquid hydrogen carriers was developed. The commercial melamine formaldehyde (MF) sponge was modified by grafting polyvinyl alcohol (PVA) through acid-catalyzed acetalization with formaldehyde. The resulting polyvinyl formal/MF (PVF/MF) composite sponge exhibited excellent characteristics as a catalyst, including high activity, high hydrogen storage density, easy catalyst recycling, and quasi-solid state behavior during H-2 generation, as demonstrated in the applications of NaBH4 solution and thermal dehydrogenation of perhydro N-ethylcarbazole.
JOURNAL OF POWER SOURCES
(2023)
Article
Optics
Roberto Boyero-Garcia, Ana Garcia-Cabrera, Oscar Zurron-Cifuentes, Carlos Hernandez-Garcia, Luis Plaja
Summary: Recent studies have shown that high-order harmonic generation (HHG) in solid targets exhibits rich electronic dynamics compared to atomic and molecular cases. The imperfect recollisions of electron-hole pairs play a significant role in HHG emission, reflecting the quantum nature of the process. This study demonstrates the signature of imperfect recollisions in monolayer graphene and highlights the contribution of imperfect multiple-order recollisions in the harmonic emission.
Article
Chemistry, Physical
W. Strek, P. Wiewiorski, W. Mista, R. Tomala, M. Stefanski
Summary: Laser-induced generation of hydrogen from methanol vapor by irradiation of graphene aerogel has been achieved, with H-2, CO, and CH4 as main components of the produced gases. The efficiency of hydrogen generation increases with excitation power of applied laser and concentration of methanol in vapor, suggesting potential application for producing H-2-rich and O-2-free syngas for fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
B. Ghomashi, S. Walker, A. Becker
Summary: Enabling elliptically polarized high-order harmonics overcomes a historical limitation in the generation of nonlinear processes in atomic, molecular and optical physics. We shed new light on a controversy between experimental observations and theoretical predictions on generating large ellipticity harmonics using cross-polarized laser pulses. Numerical calculations confirm that even harmonics with large ellipticity can be obtained in short laser pulses, while odd harmonics have low ellipticity. The ellipticity can be controlled by the relative phase, intensity ratio and duration of the pulses.
SCIENTIFIC REPORTS
(2023)
Article
Optics
Heinrich Hora, Alex Fuerbach, Francois Ladouceur, Warren McKenzie
Summary: A recent report recommends that the United States should start a national program to research and develop a compact pilot plant for fusion energy production. Fusion, which releases millions of times more energy than fossil fuel combustion, is seen as a promising alternative for decarbonizing the global energy system. However, the main challenge lies in heating the fuel to extremely high temperatures and maintaining stability under extreme pressure. Recent research shows that this challenge can be overcome by utilizing nonthermal radiation pressure generated by laser systems, leading to the fusion of hydrogen and boron-11 nuclei and clean energy production.
OPTICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Arobinda Kakoti, Jhorna Borah, Uddit Narayan Hazarika, Siddhartha Protim Bharadwaj, Pankaj Dutta, Prithiviraj Khakhlary
Summary: An inexpensive bisphenol based optical sensor (BP) was synthesized to recognize a wide range of solvents and detect H2O2 effectively. The sensor showed high detection capabilities for water and heavy water content in organic solvents, as well as selective detection of H2O2 over other peroxides. Immobilization of BP in a hydrogel matrix allowed for solid state detection of H2O2 in purely aqueous systems with significant stability.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Applied
M. A. Sevostyanov, A. S. Baikin, K. V. Sergienko, L. A. Shatova, A. A. Kirsankin, I. V. Baymler, A. V. Shkirin, S. V. Gudkov
REACTIVE & FUNCTIONAL POLYMERS
(2020)
Article
Chemistry, Multidisciplinary
Sergey Gudkov, Georgy A. Shafeev, Alexey P. Glinushkin, Alexey Shkirin, Ekaterina Barmina, Ignat I. Rakov, Alexander Simakin, Anatoly Kislov, Maxim E. Astashev, Vladimir A. Vodeneev, Valery P. Kalinitchenko
Article
Chemistry, Physical
Valery V. Smirnov, Margarita Zhilnikova, Ekaterina Barmina, Georgy A. Shafeev, Vitaly D. Kobtsev, Sergey A. Kostritsa, Svetlana M. Pridvorova
Summary: Experimental study was conducted on laser fragmentation of Al nanoparticles in liquid isopropanol, reducing their size from over 100 nm to 10 nm. These nanoparticles are seen as potential additives to liquid hydrocarbon fuels.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Ilya V. Baimler, Andrey B. Lisitsyn, Sergey V. Gudkov
FRONTIERS IN PHYSICS
(2020)
Article
Physics, Atomic, Molecular & Chemical
Andrey V. Pento, Aygul B. Bukharina, Sergei M. Nikiforov, Yaroslav O. Simanovsky, Boris G. Sartakov, Roman S. Ablizen, Victor I. Fabelinsky, Valery V. Smirnov, Aleksander A. Grechnikov
Summary: Laser-induced plasma is utilized to ionize organic compounds in gases at atmospheric pressure by exposing a metal target to pulsed laser radiation with a power density of about 70 GW cm(-2). The plasma temperature, estimated through analysis of plasma emission spectra, exceeds 5.5 x 10(4) K in the first few nanoseconds. The optimal gas environment for analysis is found to be pure argon, as the ionization efficiency of organic compounds is up to a hundred times higher compared to atmospheric air and pure nitrogen.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2021)
Article
Physics, Multidisciplinary
Ilya V. Baimler, Viktor K. Chevokin, Vitaliy A. Podvyaznikov, Sergey V. Gudkov
Summary: The study revealed that optical breakdown plasma flashes in aqueous solutions of Fe nanoparticles under Nd: YAG laser radiation exhibit specific characteristics, with the sizes of plasma flares, plasma glow intensity, and time to reach maximum intensity concentrated around certain values. The movement speed and range of the water-vapor boundary at the initial stage of breakdown process also show distinct numerical features.
FRONTIERS IN PHYSICS
(2021)
Article
Chemistry, Physical
Ilya Baimler, Alexander Simakin, Viktor K. Chevokin, Vitaliy A. Podvyaznikov, Sergey Gudkov
Summary: The dynamics of plasma flashes during optical breakdown in aqueous solutions of Fe2O3 nanoparticles were studied using a streak camera. It was found that optical breakdown can occur in two scenarios - on a single nanoparticle or on two closely located nanoparticles. When optical breakdown occurs on two nanoparticles, cavitation bubbles move away from each other with a velocity of 3000 m/s over a distance of 50 μm under the action of shock waves. The estimated pressure at the shock wave front is around 2300 MPa.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Spectroscopy
Grigory M. Arzumanyan, Kahramon Z. Mamatkulov, Mariya Y. Vorobyeva, Sergey N. Orlov, Yury N. Polivanov, Victor I. Fabelinsky, Dimitrii N. Kozlov, Valery V. Smirnov, Hanna V. Bandarenka, Nadzeya V. Khinevich, Siarhei A. Zavatski
Summary: The study focuses on surface-enhanced Raman scattering using silver nanoscale particles of various dimensions and shapes for biochemically relevant organic reporter molecules. The spectral analysis helps to quantify the contributions of different parameters to the Raman-active transitions.
JOURNAL OF RAMAN SPECTROSCOPY
(2021)
Article
Physics, Fluids & Plasmas
I. Baimler, A. Simakin, S. Gudkov
Summary: The study investigates the optical breakdown process under laser irradiation by nanosecond pulses with energy of 650 mJ in aqueous solutions of Ni nanoparticles. It was found that various parameters such as the number of breakdowns, plasma size, luminosity, acoustic signals, and formation rates of dissociation products change monotonically with irradiation time. Additionally, the measured values change non-monotonically with an increase in nanoparticle concentration.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
E. V. Barmina, V. D. Kobtsev, S. A. Kostritsa, S. N. Orlov, V. V. Smirnov, M. I. Zhilnikova, O. V. Uvarov, G. A. Shafeev
Summary: This study analyzed the diffusive combustion of a composite fuel formed by adding aluminum nanoparticles to isopropanol in oxygen. The size distribution of Al NPs was determined and the combustion process was experimentally studied using a diagnostic system based on CARS. Temperature distributions were measured in different directions for both pure isopropanol and isopropanol with Al nanoparticles added.
QUANTUM ELECTRONICS
(2022)
Article
Mechanics
E. V. Barmina, M. I. Zhilnikova, K. O. Aiyyzhy, V. D. Kobtsev, D. N. Kozlov, S. A. Kostritsa, S. N. Orlov, A. M. Saveliev, V. V. Smirnov, N. S. Titova, G. A. Shafeev
Summary: In this study, the temperature distribution in the diffusion flame during the combustion of isopropanol or isopropanol with the addition of boron nanoparticles was experimentally studied using CARS spectroscopy. The results showed that the addition of boron resulted in a temperature increase of 150 K in the flame front.
Article
Chemistry, Physical
Sergey V. Gudkov, Maxim E. Astashev, Ilya V. Baimler, Oleg V. Uvarov, Valery V. Voronov, Alexander V. Simakin
Summary: The influence of the number of oxidized terbium nanoparticles on the intensity of physicochemical processes during optical breakdown in aqueous colloidal solutions has been investigated. The study found that this influence is significantly dependent on the fluence of laser radiation.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Thermodynamics
V. D. Kobtsev, S. A. Kostritsa, A. V. Pelevkin, V. V. Smirnov, N. S. Titova, S. A. Torokhov, S. Yu. Volkov
Summary: Experimental and numerical studies were conducted on the ignition and combustion of an H-2 -O-2 mixture initiated by a pulsed excimer ArF-laser. It was demonstrated that the ignition region can be increased by changing the focusing of the laser beam. The shape of the ignition region and the combustion front velocity vary with different lens focal lengths.
COMBUSTION AND FLAME
(2022)
Article
Biochemistry & Molecular Biology
Egor Nagaev, Ilya Baimler, Alexey S. Baryshev, Maxim E. Astashev, Sergey Gudkov
Summary: The influence of surgical laser radiation on the physicochemical properties of Bovine Serum Albumin (BSA) protein was studied. The study found that the optical breakdown characteristics weakly depend on the protein concentration. Laser radiation increased the optical density of protein solutions, while the fluorescence intensity and position remained relatively unchanged. Raman spectrum indicated partial denaturation of BSA molecules and the formation of aggregates. The viscosity of BSA solutions increased after laser radiation.
Article
Physics, Multidisciplinary
S. M. Pridvorova, M. Zhilnikova, E. Barmina, G. A. Shafeev
Summary: Laser ablation was used to generate Ag2O nanoparticles with an average size of around 20 nm, which can serve as antibacterial coating. The nanoparticles were characterized using optical absorption spectroscopy and transmission electron microscopy.
PHYSICS OF WAVE PHENOMENA
(2021)
