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Journal articles on the topic 'Pulse-plasma processing'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Vincent, T. L., and L. L. Raja. "Optimal Pulse Shaping for Plasma Processing." IEEE Transactions on Control Systems Technology 12, no. 1 (2004): 75–86. http://dx.doi.org/10.1109/tcst.2003.821961.

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2

Ciupiński, Łukas, D. Siemiaszko, Marcin Rosiński, Andrzej Michalski, and Krzysztof Jan Kurzydlowski. "Heat Sink Materials Processing by Pulse Plasma Sintering." Advanced Materials Research 59 (December 2008): 120–24. http://dx.doi.org/10.4028/www.scientific.net/amr.59.120.

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A Pulse Plasma Sintering (PPS) process was employed to manufacture Cu-diamond composites with a 50% volume fraction of each constituent. Pure and Cr (0.8wt.%) alloyed copper matrices were used and commercial diamond powders. The composites were sintered at temperature of 900°C for 20 min and under pressure of 60 MPa. In these sintering conditions diamond becomes thermodynamically unstable. Cu0.8Cr-diamond and Cu-diamond composites with relative densities of 99,7% and 96% respectively were obtained. The thermal conductivity of Cu0.8Cr-diamond composite is equal to 640 W(mK)-1 whereas that of Cu

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3

Cho, Chulhee, Kwangho You, Sijun Kim, Youngseok Lee, Jangjae Lee, and Shinjae You. "Characterization of SiO2 Etching Profiles in Pulse-Modulated Capacitively Coupled Plasmas." Materials 14, no. 17 (2021): 5036. http://dx.doi.org/10.3390/ma14175036.

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Although pulse-modulated plasma has overcome various problems encountered during the development of the high aspect ratio contact hole etching process, there is still a lack of understanding in terms of precisely how the pulse-modulated plasma solves the issues. In this research, to gain insight into previously observed phenomena, SiO2 etching characteristics were investigated under various pulsed plasma conditions and analyzed through plasma diagnostics. Specifically, the disappearance of micro-trenching from the use of pulse-modulated plasma is analyzed via self-bias, and the phenomenon that

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4

Holland, Julian, Rudolf Weber, Marc Sailer, and Thomas Graf. "Influence of Pulse Duration on X-ray Emission during Industrial Ultrafast Laser Processing." Materials 15, no. 6 (2022): 2257. http://dx.doi.org/10.3390/ma15062257.

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Soft X-ray emissions during the processing of industrial materials with ultrafast lasers are of major interest, especially against the background of legal regulations. Potentially hazardous soft X-rays, with photon energies of >5 keV, originate from the fraction of hot electrons in plasma, the temperature of which depends on laser irradiance. The interaction of a laser with the plasma intensifies with growing plasma expansion during the laser pulse, and the fraction of hot electrons is therefore enhanced with increasing pulse duration. Hence, pulse duration is one of the dominant laser para

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5

Liu, Xiaoxu, Xianlong Ni, Osamu Konda, Hiroko Furuhashi, Satoru Maegawa, and Fumihiro Itoigawa. "Clarification of the Mechanism of Pulse Laser Grinding of Nanosecond Lasers Using High-Speed Camera Imaging." Machines 10, no. 3 (2022): 196. http://dx.doi.org/10.3390/machines10030196.

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Pulse laser grinding (PLG), as a cutting tool processing method, can not only achieve edge sharpening with high precision, but it can also produce surface modification. For example, polycrystalline cubic boron nitride (PCBN) tools processed by PLG can show increased hardness due to the reduction in defects. However, the mechanism of edge formation under PLG processing remains unclear. In this study, by observing the plasma generated during processing using a high-speed camera, the elementary process for each laser pulse of the PLG process was visualized. The plasma luminescence moved successiv

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6

Li, Chengde, S. R. Vatsya, and S. K. Nikumb. "Effect of plasma on ultrashort pulse laser material processing." Journal of Laser Applications 19, no. 1 (2007): 26–31. http://dx.doi.org/10.2351/1.2402521.

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7

Ishigaki, Takamasa, and Tadahiro Sakuta. "Pulse-Modulated RF Thermal Plasma for Advanced Materials Processing." Journal of Intelligent Material Systems and Structures 10, no. 7 (1999): 565–68. http://dx.doi.org/10.1106/4jnk-f951-uq6f-vwer.

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8

Wen, Fuh Liang, Yu Lin Lo, C. H. Lin, and Shann Chyi Mou. "A Pulse DC Plasma Deposited Resistor Process." Materials Science Forum 505-507 (January 2006): 865–70. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.865.

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The pulse DC plasma system offers so highly instant power to generate extremely intense plasma density that its applications are widely extended. In this work, the development of pulse DC plasma processing is studied for the sheet resistors, and the manufacturing mechanism relative to the properties of copper particles deposited on plastic materials is discussed by using atomic force microscopy and line-resistance measured technique.

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9

Fan, C. H., J. Sun, and J. P. Longtin. "Plasma Absorption of Femtosecond Laser Pulses in Dielectrics." Journal of Heat Transfer 124, no. 2 (2001): 275–83. http://dx.doi.org/10.1115/1.1445135.

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Dielectric (high bandgap) materials represent an important and diverse class of materials in micro and nanotechnology, including MEMS devices, biomedical and bioengineering systems, multilayer thin film coatings, fiber optics, etc. Micromachining dielectrics using ultrafast lasers is an exciting and promising new research area with many significant advantages, including precision material removal, negligible heating of the workpiece, micron and sub-micron-size feature fabrication, and high aspect ratio features. During ultrafast laser processing of dielectrics, the intense laser pulse ionizes

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10

Chun, S. Y. "Metal Plasma Source Ion Implantation Using a Pulsed Cathodic Arc." Materials Science Forum 534-536 (January 2007): 1397–400. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1397.

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Combining nano-designed plasma source ion implantation and deposition (PSII&D) method has been developed with the pulsed cathodic arc plasma to make a processing system suitable for surface modification of materials such as metals, plastics and ceramics. By controlling the arc plasma pulse and the target pulse, the surface modification can be changed from plasma deposition to ion implantation. Various versions of applying high-voltage pulse bias are described and compared with other methods. Microstructural changes of the nanometered gold films with/without a high voltage bias, concentrati

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11

Zhukeshov, Anuar. "The Improvement of Stainless Steel Properties after Pulse Plasma Processing." International Journal of Materials Science and Applications 2, no. 3 (2013): 115. http://dx.doi.org/10.11648/j.ijmsa.20130203.18.

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12

Ozasa, K. "Selective epitaxy with in situ mask processing and pulse plasma." Advances in Colloid and Interface Science 71-72, no. 1-3 (1997): 3–29. http://dx.doi.org/10.1016/s0001-8686(97)00007-9.

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13

Ozasa, Kazunari. "Selective epitaxy with in situ mask processing and pulse plasma." Advances in Colloid and Interface Science 71-72 (September 1997): 3–29. http://dx.doi.org/10.1016/s0001-8686(97)90007-5.

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14

Bhuiyan, Shariful Islam, Kunpeng Wang, Md Abdullah Hil Baky, Jamie Kraus, Howard Jemison, and David Staack. "Controlling Parameters in the Efficiency of Hydrogen Production via Electrification with Multi-Phase Plasma Processing Technology." Energies 16, no. 14 (2023): 5509. http://dx.doi.org/10.3390/en16145509.

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A nanosecond pulsed non-equilibrium plasma reactor is used to crack hydrocarbons into hydrogen and lighter intermediates at atmospheric pressure and warm temperature. The effects of power, capacitance, breakdown voltage, pulsing frequency, energy per pulse, and carrier gas type are investigated for product generation. Multiple gaseous products including hydrogen and hydrocarbons are calculated and compared at different conditions. A statistical analysis is performed on hydrogen yield for different experimental conditions to determine the significance of the studied parameters. Comparable hydro

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15

Geng, Congrui, Jixing Cai, Yubo Liu, et al. "Study on the Expansion Kinetics of Plasma and Absorption Wave Induced by Millisecond-Nanosecond Combined Pulse Lasers in Fused Quartz." Photonics 10, no. 4 (2023): 411. http://dx.doi.org/10.3390/photonics10040411.

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The transient temperature field, the velocity and pressure of plasma, and the absorption wave of fused quartz induced by millisecond-nanosecond combined pulse lasers are simulated. The theoretical model of plasma and absorption wave produced by fused quartz irradiated by a millisecond-nanosecond pulsed laser is established, in which pulse delay and laser energy are essential variables. The results show that the damaged effect of the millisecond-nanosecond combined pulse laser is different under the damaged effect of different pulse delay conditions. When the energy densities of millisecond-nan

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16

Heberlein, Joachim. "New approaches in thermal plasma technology." Pure and Applied Chemistry 74, no. 3 (2002): 327–35. http://dx.doi.org/10.1351/pac200274030327.

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Thermal plasmas offer unique advantages for materials processing, such as high fluxes of heat and of reactant species. Recent developments have concentrated on improving control of these fluxes across the boundaries surrounding the thermal plasma. Secondary discharges (hybrid plasma generators) and pulse modulation of the plasma have been some of the approaches for this end. The use of such methods is described for selected applications. Plasma characterization through advanced models and diagnostics are concentrating on description of plasma instabilities and various nonequilibrium conditions

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17

Zhukeshov, Anuar, Asylgul Gabdullina, Assem Amrenova, and Svetlana Pak. "Structure and Microhardness of Steel Samples after Pulse Plasma Flows Processing." Materials Sciences and Applications 04, no. 07 (2013): 35–41. http://dx.doi.org/10.4236/msa.2013.47a2006.

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18

Popović, I., and M. Zlatanović. "Equivalent Circuits of Unipolar Pulsed Plasma System for Electrical and Optical Signal Analysis." Materials Science Forum 555 (September 2007): 89–94. http://dx.doi.org/10.4028/www.scientific.net/msf.555.89.

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Matching of pulse plasma generators to various gas discharges for surface treatment of materials depends on plasma processing equipment. In order to investigate the influence of pulse plasma generator and gas discharge parameters on electrical signal waveforms during the process of unipolar pulse plasma nitriding, equivalent electrical circuit was introduced. The influence of parasitic inductance of interconnection lines and vacuum chamber physical properties was also included in the given equivalent circuit. Gas discharge characteristics at different process parameters were investigated. It w

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19

Korolyov, A. Yu, Yu G. Aliakseyeu, V. S. Niss, and A. E. Parshuto. "Electrolyte-Plasma Treatment in Controlled Pulse Modes." Science & Technique 20, no. 4 (2021): 279–86. http://dx.doi.org/10.21122/2227-1031-2021-20-4-279-286.

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Electrolyte-plasma treatment (EPT) has become widespread in industry as an alternative to traditional chemical, electrochemical and mechanical methods of improving the surface quality of products made of metallic materials. The advantages of EPT are a high intensity of smoothing of microroughnesses, the use of low-concentration salt solutions as electrolytes, and the ability to process items of complex shape. The main disadvantage of the method is its high energy consumption; therefore, the method сan be classified as energy-intensive production. To reduce the energy intensity and increase the

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20

Gusarov and Kovalev. "Sequences of Sub-Microsecond Laser Pulses for Material Processing: Modeling of Coupled Gas Dynamics and Heat Transfer." Applied Sciences 9, no. 22 (2019): 4785. http://dx.doi.org/10.3390/app9224785.

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Multipulse laser processing of materials is promising because of the additional possibilities to control the thickness of the treated and the heat-affected zones and the energy efficiency. To study the physics of mutual interaction of pulses at high repetition rate, a model is proposed where heat transfer in the target and gas-dynamics of vapor and ambient gas are coupled by the gas-dynamic boundary conditions of evaporation/condensation. Numerical calculations are accomplished for a substrate of an austenitic steel subjected to a 300 ns single pulse of CO2 laser and a sequence of the similar

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21

Zhang, Yanming, Yusuke Ito, Reina Yoshizaki, et al. "Mechanism and performance evaluation of transient and selective laser processing of glass based on optical monitoring." Optics Express 31, no. 23 (2023): 38191. http://dx.doi.org/10.1364/oe.497360.

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Femtosecond laser processing has been widely applied in glass processing owing to its ability to fabricate microscale components. To improve processing efficiency, a transient and selective laser (TSL) processing technique was previously developed, in which electron excitation was induced inside a transparent medium by a single pulse of femtosecond (fs) laser, and a single pulse of microsecond (µs) laser can be selectively absorbed in this excited region to heat and remove the material. However, because of its high speed removal process, the unclear mechanism and inefficient evaluation of its

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22

Ohta, Takashi, Daisuke Ogasawara, Takahiro Iwai, Hidekazu Miyahara, and Akitoshi Okino. "Development of Ultrasonic Pulsed Plasma Jet Source for Remote Surface Treatment." Applied Sciences 13, no. 1 (2022): 444. http://dx.doi.org/10.3390/app13010444.

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We have developed a supersonic pulsed plasma jet device capable of long-distance and high-speed processing, and investigated its basic characteristics for surface treatment applications, mainly in the material and medical fields. The developed apparatus is equipped with a mechanism to transport active species in the plasma to the object to be treated by jetting the generated high-density plasma outward with supersonic pulse jets, which allows the gas flow velocity to increase significantly during pulse jetting compared with plasma generation. This enables the active species in the plasma to re

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23

Cao, Tian Dong, and Chang Zi Chen. "New Plasma Surface Processing Technology and its Application." Applied Mechanics and Materials 697 (November 2014): 21–26. http://dx.doi.org/10.4028/www.scientific.net/amm.697.21.

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Plasma surface processing technology can improve the mechanical properties, the corrosion resistance and chemical properties of the parts; therefore it has been widely used in industrial field. Advanced plasma surface processing technology is also constantly innovation, high power pulsed magnetron sputtering technique has been studied and explored by many scholars in recent years, and also gradually began to be used in the industry . This paper mainly introduces the study of HiPIMS dynamic and application over the past ten years. The HiPIMS discharge mechanism research method and theory is sum

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24

Fang, Zheng, Tong Zhou, Walter Perrie, et al. "Pulse Burst Generation and Diffraction with Spatial Light Modulators for Dynamic Ultrafast Laser Materials Processing." Materials 15, no. 24 (2022): 9059. http://dx.doi.org/10.3390/ma15249059.

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A pulse burst optical system has been developed, able to alter an energetic, ultrafast 10 ps, 5 kHz output pulse train to 323 MHz intra-burst frequency at the fundamental 5 kHz repetition rate. An optical delay line consisting of a beam-splitting polariser cube, mirrors, and waveplates transforms a high-energy pulse into a pulse burst, circulating around the delay line. Interestingly, the reflected first pulse and subsequent pulses from the delay line have orthogonal linear polarisations. This fact allows independent modulation of these pulses using two-phase-only Spatial Light Modulators (SLM

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25

DENG, Y. Z., H. Y. ZHENG, V. M. MURUKESHAN, X. C. WANG, G. C. LIM, and B. K. A. NGOI. "IN-PROCESS MONITORING OF FEMTOSECOND LASER MATERIAL PROCESSING." International Journal of Nanoscience 04, no. 04 (2005): 761–66. http://dx.doi.org/10.1142/s0219581x05003632.

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Recent research and development on the femtosecond laser has shown that it is a powerful tool for high precision micromachining. However, the femtosecond laser-material interaction is fast and complex due to its ultrashort pulse duration. Consequently, it is not an easy task to optimize process parameters and to ensure high-quality fabrication. In this context, we propose an in-line monitoring technique based on plasma plume diagnostics. By analyzing the spectra of the femtosecond laser-induced plasma, which was detected and analyzed using a spectrometer, the plasma temperature of the copper s

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26

Puchkarev, Victor, and Martin Gundersen. "Energy efficient plasma processing of gaseous emission using a short pulse discharge." Applied Physics Letters 71, no. 23 (1997): 3364–66. http://dx.doi.org/10.1063/1.120338.

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27

Ishigaki, T., N. Okada, N. Ohashi, H. Haneda, and T. Sakuta. "Nonthermal and nonequilibrium effects in high-power pulsed ICP and application to surface modification of materials." Pure and Applied Chemistry 74, no. 3 (2002): 435–39. http://dx.doi.org/10.1351/pac200274030435.

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Newly developed pulse-modulated high-power inductively coupled plasma (ICP) is expected to offer the unique physicochemical condition, such as the increased concentration of chemically reactive species, as well as the appropriate heat flux for materials processing. Two kinds of oxide materials, titanium and zinc oxide, were placed at the downstream of ArH2 ICP and irradiated in the plasma of continuous (CN) and pulse-modulated (PM) modes. The CN-ICP irradiation at the position close to the plasma tail gave rise to the thermal reduction of oxides. In the PM-ICP irradiation, the degree of therm

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28

Titov, Evgeniy Yurevich, Ivan Vasilevich Bodrikov, Anton Igorevich Serov, Yuriy Alekseevich Kurskii, Dmitry Yurievich Titov, and Evgenia Ruslanovna Bodrikova. "Liquid-Phase Non-Thermal Plasma Discharge for Fuel Oil Processing." Energies 15, no. 9 (2022): 3400. http://dx.doi.org/10.3390/en15093400.

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The non-thermal plasma pyrolysis of fuel oil, under the action of low-voltage electric discharges in the liquid phase, has made it possible to develop a new process to obtain valuable petrochemical products. In this study, the main parameters, including pulse energy and the time of impact on the non-thermal plasma pyrolysis process, are studied. The main components of the obtained gaseous products are hydrogen (27.6–49.6 mol%), acetylene (33.6–49.1 mol%), ethylene (6.9–12.1 mol%), methane (3.9–9.1 mol%), and hydrocarbons C3-C5 (3.8–9.3 mol%). Increasing the capacity of electric discharges lead

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29

Okazaki, Ken, Ryouki Tobe, Shin-ichi Yasuda, and Akira Mizuno. "Formation and Sustaining Conditions of High-Voltage Ultrashort Pulse Plasma for CVD Processing." Transactions of the Japan Society of Mechanical Engineers Series B 60, no. 573 (1994): 1785–91. http://dx.doi.org/10.1299/kikaib.60.1785.

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30

Sakuta, T., and T. Ishigaki. "Non-equilibrium effects in pulse modulated induction thermal plasma for advanced material processing." Pure and Applied Chemistry 71, no. 10 (1999): 1845–52. http://dx.doi.org/10.1351/pac199971101845.

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31

Titov, Evgeniy, Ivan Bodrikov, and Dmitry Titov. "Control of the Energy Impact of Electric Discharges in a Liquid Phase." Energies 16, no. 4 (2023): 1683. http://dx.doi.org/10.3390/en16041683.

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This paper describes the scheme and algorithm for controlling a laboratory setup that result in low uncertainty and high convergence with respect to the characteristics of electric discharges under the conditions of variable parameters of a reaction medium. The article presents current and voltage oscillograms when processing hydrocarbon raw materials. Methods for calculating the energy impact of electrical discharge are described. A comparison is made between the parameters of electric discharge with current pulse limitations and those without current pulse duration limitations. The proposed

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32

Schille, Joerg, Sebastian Kraft, Theo Pflug, et al. "Study on X-ray Emission Using Ultrashort Pulsed Lasers in Materials Processing." Materials 14, no. 16 (2021): 4537. http://dx.doi.org/10.3390/ma14164537.

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The interaction of ultrashort pulsed laser radiation with intensities of 1013 W cm−2 and above with materials often results in an unexpected high X-ray photon flux. It has been shown so far, on the one hand, that X-ray photon emissions increase proportionally with higher laser power and the accumulated X-ray dose rates can cause serious health risks for the laser operators. On the other hand, there is clear evidence that little variations of the operational conditions can considerably affect the spectral X-ray photon flux and X-ray emissions dose. In order to enhance the knowledge in this fiel

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33

Ma, Yao, Chao Xin, Wei Zhang, and Guangyong Jin. "Experimental Study of Plasma Plume Analysis of Long Pulse Laser Irradiates CFRP and GFRP Composite Materials." Crystals 11, no. 5 (2021): 545. http://dx.doi.org/10.3390/cryst11050545.

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The application of laser fabrication of fiber-reinforced polymer (FRP) has an irreplaceable advantage. However, the effect of the plasma generated in laser fabrication on the damage process is rarely mentioned. In order to further study the law and mechanism of laser processing, the laser process was measured. CFRP and GFRP materials were damaged by a 1064 nm millisecond pulsed laser. Moreover, the propagation velocity and breakdown time of plasma plume were compared. The results show that GFRP is more vulnerable to breakdown than CFRP under the same conditions. In addition, the variation of p

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34

Grant-Jacob, James A., Ben Mills, and Michalis N. Zervas. "Live imaging of laser machining via plasma deep learning." Optics Express 31, no. 25 (2023): 42581. http://dx.doi.org/10.1364/oe.507708.

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Real-time imaging of laser materials processing can be challenging as the laser generated plasma can prevent direct observation of the sample. However, the spatial structure of the generated plasma is strongly dependent on the surface profile of the sample, and therefore can be interrogated to indirectly provide an image of the sample. In this study, we demonstrate that deep learning can be used to predict the appearance of the surface of silicon before and after the laser pulse, in real-time, when being machined by single femtosecond pulses, directly from camera images of the generated plasma

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35

Hribar, Luka, Peter Gregorčič, Matej Senegačnik, and Matija Jezeršek. "The Influence of the Processing Parameters on the Laser-Ablation of Stainless Steel and Brass during the Engraving by Nanosecond Fiber Laser." Nanomaterials 12, no. 2 (2022): 232. http://dx.doi.org/10.3390/nano12020232.

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In this paper, we investigate the influence of the following parameters: pulse duration, pulse repetition rate, line-to-line and pulse-to-pulse overlaps, and scanning strategy on the ablation of AISI 316L steel and CuZn37 brass with a nanosecond, 1064-nm, Yb fiber laser. The results show that the material removal rate (MRR) increases monotonically with pulse duration up to the characteristic repetition rate (f0) where pulse energy and average power are maximal. The maximum MRR is reached at a repetition rate that is equal or slightly higher as f0. The exact value depends on the correlation bet

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36

Khodyrevskaya, Yulia, Yuliya Kudryavtseva, Gennady Remnev, and Sergei Tverdokhlebov. "Effect of Plasma-Based Chemical Modification on Wettability of Polymer Materials for Cardiovascular Surgery." Advanced Materials Research 1085 (February 2015): 419–23. http://dx.doi.org/10.4028/www.scientific.net/amr.1085.419.

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A method to modify polymer surface properties responsible for wettability and surface free energy has been proposed. Plasma-based chemical modification of polymer surfaces with gas discharges allows adjusting their functional properties. The main changes in polymer wettability occur within short-term exposure of polymer surfaces to pulsed plasma at atmospheric pressure (1-60 sec). The contact angle values for the modified polymers depend on the gaseous medium and the conditions of the plasma processing. Changing the power, the pulse repetition rate and plasma exposure time allow controlling th

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Teresov, A. D., Yu A. Denisova, A. B. Skosyrsky, V. V. Denisov, A. A. Leonov, and E. A. Petrikova. "Modification of the surface of a tungsten carbide composite material by electron-ion-plasma methods." Izvestiya vysshikh uchebnykh zavedenii. Fizika, no. 11 (2022): 163–67. http://dx.doi.org/10.17223/00213411/65/11/163.

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The surface of a porous tungsten carbide pseudoalloy of the WC-WCoNiFe system has been modified by a pulsed electron beam and the method of combined electron-ion-plasma, which includes vacuum arc deposition of a film from VT1-0 titanium alloy (1 μm) and subsequent pulsed electron-beam processing of the"coating/substrate" system. Optimal modes of pulsed electron-beam processing were found depending on the energy density in the pulse (40-65 J/cm2) and the pulse duration (150-200 µs). It is shown that electron-beam surface treatment of a material of this class under optimal conditions of electron

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38

Heinke, Robert, Thomas Arnold, Martin Ehrhardt, Pierre Lorenz, and Klaus Zimmer. "Simultaneous atmospheric pressure plasma jet etching and laser irradiation for ultra-precise optical glass processing." EPJ Web of Conferences 309 (2024): 03022. http://dx.doi.org/10.1051/epjconf/202430903022.

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The use of beam-based technologies to process optical elements with nanoscale precision enables the fabrication of freeform surfaces. In particular, atmospheric pressure plasma jets (APPJs) have desirable properties, e.g., depth precision < 5 nm, low surface roughness and processing at atmospheric conditions. However, the composition of optical glasses and glass ceramics, containing metal oxides, leads to the formation of non-volatile reaction products that remain on the substrate surface. These residues reduce the etching rate and cause severe roughening of the surface. Laser irradiation h

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39

Aliakseyeu, Yu G., A. Yu Korolyov, V. S. Niss, A. E. Parshuto, E. V. Soroka, and A. S. Budnitskiy. "POWER SUPPLY FOR THE INVESTIGATION OF PULSE ELECTROCHEMICAL PROCESSES." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 61, no. 3 (2018): 246–57. http://dx.doi.org/10.21122/1029-7448-2019-61-3-246-257.

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Recently, there has been a tendency in the industry to use electrochemical processing methods based on the use of milli- and microsecond pulses of different polarity and amplitude instead of a direct current. The use of a pulsed current in many cases makes it possible to obtain the desired effect by cheaper means and to provide additional controllability of the electrochemical process by adjusting the time parameters of the current pulses. This also ensures reduction of the energy costs of the polishing and cleaning process of surfaces as compared to direct current processing and increasing th

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40

Tajima, Satomi, Shoichi Tsuchiya, Masashi Matsumori, Shigeki Nakatsuka, and Takanori Ichiki. "On/off Pulse Modulation of Atmospheric-Pressure Helium/Argon Inductively Coupled Plasma Microjet for Plasma Processing of Polymers." Journal of Photopolymer Science and Technology 23, no. 4 (2010): 555–60. http://dx.doi.org/10.2494/photopolymer.23.555.

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41

Kadziela, M., B. Jablonski, P. Perek, and D. Makowski. "Evaluation of the ITER Real-Time Framework for Data Acquisition and Processing from Pulsed Gigasample Digitizers." Journal of Fusion Energy 39, no. 5 (2020): 261–69. http://dx.doi.org/10.1007/s10894-020-00264-3.

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AbstractPlasma diagnostics systems are becoming progressively more advanced. Contemporarily, researchers strive to achieve longer plasma pulses, and therefore, appropriate hardware is required. Analogue-to-Digital Converters are applied for data acquisition in many plasma diagnostic systems. Some diagnostic systems need data acquisition with gigahertz sampling frequency. However, gigasample digitizers working in continuous mode generate an enormous stream of data that requires suitable, high-performance processing systems. This becomes even more complicated and expensive for complex multi-chan

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42

Luo, Junming, Churui Xiao, and Linwei Zhang. "The effect of pulse plasma detonation post-processing on the oxidation of CoNiCrAlY coating." Surface and Coatings Technology 419 (August 2021): 127297. http://dx.doi.org/10.1016/j.surfcoat.2021.127297.

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Deguchi, Mikio, and Ryohei Itatani. "A Novel and Convenient Method for Monitoring Processing Plasma: The Insulated Pulse Probe Method." Japanese Journal of Applied Physics 37, Part 1, No. 3A (1998): 970–80. http://dx.doi.org/10.1143/jjap.37.970.

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SCHADE, WOLFGANG, CHRISTIAN BOHLING, KONRAD HOHMANN, and DIRK SCHEEL. "Laser-induced plasma spectroscopy for mine detection and verification." Laser and Particle Beams 24, no. 2 (2006): 241–47. http://dx.doi.org/10.1017/s0263034606060356.

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Laser-induced breakdown spectroscopy (LIBS) in combination with a conventional mine prodder is applied for remote detection of explosives and mine housing materials. High power subnanosecond laser pulses (pulse powerEp= 0.6 mJ and pulse duration Δt= 650 ps) at 1064 nm with a typical repetition rate of 10 kHz are generated by using a passively Q-switched Cr4+:Nd3+:YAG microchip-laser as seed-laser for an Yb-fiber amplifier. In the present investigation, the ratios of “late” and “early” LIBS intensities for the cyanide (CN) plasma emission at 388 nm and for the C-emission at 248 nm are used for

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SIRAJ, K., M. SHOAIB, SAQIB ALI, M. S. RAFIQUE, and SAIF-UR-REHMAN. "EFFECT OF REPETITIVE PULSED LASER IRRADIATION ON PLASMA PLUME EMISSION INTENSITY AND SURFACE MORPHOLOGY OF 15 MeV ELECTRON-DEFECTED SILICON." International Journal of Modern Physics B 26, no. 26 (2012): 1250153. http://dx.doi.org/10.1142/s0217979212501536.

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In this work, laser induced plasma plume intensity and surface morphology of electron-defected silicon have been studied. For this purpose, the silicon (1 1 1) was irradiated with 15 MeV electrons at different doses (2000–10,000 cGy). The electron-defected silicon samples were analyzed by XRD and SEM, showing increase in number of defects (incubation or absorption centers) by increasing electron dose. Afterward, repetitive Nd:YAG laser pulses were applied to electron-defected silicon. The plasma plume due to each laser pulse was photographed by computer controlled image capture system. From th

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Zhao, Runhan, Chenbin Ma, Xiaojie Gao, Hailong Zhang, and Xingsheng Wang. "Investigation of Overflow-Water-Assisted Femtosecond Laser-Induced Plasma Modulation of Microchannel Morphology." Coatings 13, no. 9 (2023): 1541. http://dx.doi.org/10.3390/coatings13091541.

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Laser-induced plasma micromachining (LIPMM) process is an effective approach to create microfeatures with high aspect ratio (AR) and reduced heat affected zone (HAZ). Therefore, LIPMM plays a crucial role in improving the morphology of microchannels. In this study, microchannels were fabricated using a femtosecond laser with two distinct sets of process parameters under three different processing methods: overflow-water-assisted laser-induced plasma micromachining (OF-LIPMM), laser direct writing (LDW), and static water laser-induced plasma micromachining (S-LIPMM). Furthermore, single-factor

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Zhang, Yong, Qiuyun Wang, Anmin Chen, and Xun Gao. "Effect of laser pulse energy on atomic lines and molecular bands in femtosecond LIBS of aluminum." Laser Physics 33, no. 7 (2023): 076003. http://dx.doi.org/10.1088/1555-6611/acd4ad.

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Abstract This study explored the characteristics of atomic and molecular emissions in Al plasmas generated by femtosecond lasers. The influence of laser pulse energy on Al atoms and AlO molecules time-integrated spectra was examined. As laser pulse energy increased, the intensity of Al atoms increased, while the emission of AlO molecules first increased and then remained unchanged. Secondly, the vibration temperature of AlO was determined and found to result in strong emission at a low temperature. Finally, the influence of laser pulse energy on the time-resolved spectra of Al atom and AlO mol

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Jin, Yaobin, and Li Cheng. "An Inductive Isolation-Based 10 kV Modular Solid Boost-Marx Pulse Generator." Electronics 12, no. 7 (2023): 1586. http://dx.doi.org/10.3390/electronics12071586.

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The solid-state Marx pulse generator is widely used in various fields such as biomedical electroporation, food processing, and plasma material modification. In this paper, an inductor is chosen as an isolation device and by adding a switch to the circuit, a solid-state boost-Marx pulse generator (BMPG) is formed. On the one hand, the inductor forms a boost circuit to multiply the output voltage gain, and on the other hand, it solves the shortcomings of conventional Marx pulse generators where the charging speed and total efficiency during high-frequency pulse generation are drastically affecte

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Freitag, Christian, Leon Pauly, Daniel J. Förster, et al. "Residual heat generated during laser processing of CFRP with picosecond laser pulses." Advanced Optical Technologies 7, no. 3 (2018): 157–63. http://dx.doi.org/10.1515/aot-2018-0001.

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Abstract One of the major reasons for the formation of a heat-affected zone during laser processing of carbon fiber-reinforced plastics (CFRP) with repetitive picosecond (ps) laser pulses is heat accumulation. A fraction of every laser pulse is left as what we termed residual heat in the material also after the completed ablation process and leads to a gradual temperature increase in the processed workpiece. If the time between two consecutive pulses is too short to allow for a sufficient cooling of the material in the interaction zone, the resulting temperature can finally exceed a critical t

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Ehrhardt, Martin, Pierre Lorenz, Jens Bauer, et al. "Dry Etching of Germanium with Laser Induced Reactive Micro Plasma." Lasers in Manufacturing and Materials Processing 8, no. 3 (2021): 237–55. http://dx.doi.org/10.1007/s40516-021-00147-1.

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AbstractHigh-quality, ultra-precise processing of surfaces is of high importance for high-tech industry and requires a good depth control of processing, a low roughness of the machined surface and as little as possible surface and subsurface damage but cannot be realized by laser ablation processes. Contrary, electron/ion beam, plasma processes and dry etching are utilized in microelectronics, optics and photonics. Here, we have demonstrated a laser-induced plasma (LIP) etching of single crystalline germanium by an optically pumped reactive plasma, resulting in high quality etching. A Ti:Sapph

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