Relevant bibliographies by topics / PLAL / Journal articles
To see the other types of publications on this topic, follow the link: PLAL.

Journal articles on the topic 'PLAL'

Author: Grafiati
Published: 21 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'PLAL.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Dell’Aglio, Marcella, and Alessandro De Giacomo. "Optical Diagnostics during Pulsed Laser Ablation in Liquid (PLAL) for the Production of Metallic Nanoparticles." Applied Sciences 11, no. 21 (November 3, 2021): 10344. http://dx.doi.org/10.3390/app112110344.

Full text
Abstract:
Pulsed laser ablation in liquid (PLAL) is gaining an important role as a methodology for producing nanostructures without the use of chemicals and stabilizers. Several nanomaterials have been produced and the engineering of PLAL is becoming an important task for the dissemination of this approach for nanostructure production. Monitoring the processes involved in the PLAL during nanostructure production can be extremely useful for improving the experimental methods and for pushing PLAL to new material formation. In this paper, we discuss the use of optical techniques for investigating the specific stages involved in the production of nanomaterials with PLAL. In particular, the recent advancements of these optical techniques for each specific stage of the PLAL process will be discussed: optical emission spectroscopy and imaging for the investigation of the plasma phase, shadowgraph imaging for the investigation of the cavitation bubble dynamics and different scattering techniques for the visualization of the produced nanostructure.
APA, Harvard, Vancouver, ISO, and other styles
2

Mehta, Kavil, and Prahlad K. Baruah. "A comprehensive review and outlook on the experimental techniques to investigate the complex dynamics of pulsed laser ablation in liquid for nanoparticle synthesis." Review of Scientific Instruments 93, no. 9 (September 1, 2022): 091501. http://dx.doi.org/10.1063/5.0084803.

Full text
Abstract:
Pulsed laser ablation in liquid (PLAL) has been established as one of the most efficient and impactful methods for producing pure and ligand-free nanoparticles (NPs). PLAL has successfully been utilized for the synthesis of metal NPs, semiconductor NPs, ceramic NPs, and even nanocomposites. A variety of NPs, including core–shell, nanocubes, nanorods, and many other complex structures, can be synthesized using PLAL. The versatility associated with PLAL has led to the synthesis of NPs that have found applications in the field of biomedicine, sensing technology, energy harvesting, and various industries. Despite all the aforementioned advantages, there has been an ambiguity in terms of conditions/parameters for the nanoparticle synthesis as reported by various research groups. This has led to a perception that PLAL provides little or no control over the properties of the synthesized NPs. The properties of the NPs are reliant on transient dynamics caused due to a high-intensity laser’s interaction with the target material. To understand the process of nanoparticle synthesis and to control the properties of NPs, it is critical to understand the various processes that occur during PLAL. The investigation of PLAL is essential for understanding the dynamical processes involved. However, the investigation techniques employed to probe PLAL present their own set of difficulties, as high temporal as well as spatial resolution is a prerequisite to probe PLAL. Hence, the purpose of this Review is to understand the dynamical processes of PLAL and gain an insight into the various investigation techniques and their data interpretation. In addition to the current challenges, some ways of overcoming these challenges are also presented. The benefits of concurrent investigations with special emphasis on the simultaneous investigation by multiple techniques are summarized, and furthermore, a few examples are also provided to help the readers understand how the simultaneous investigation works.
APA, Harvard, Vancouver, ISO, and other styles
3

Salim, Ali Aqeel, Noriah Bidin, Ahmad Shehab Lafi, and Fahrul Zaman Huyop. "Antibacterial activity of PLAL synthesized nanocinnamon." Materials & Design 132 (October 2017): 486–95. http://dx.doi.org/10.1016/j.matdes.2017.07.014.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Nyabadza, Anesu, Mercedes Vazquez, and Dermot Brabazon. "A Review of Bimetallic and Monometallic Nanoparticle Synthesis via Laser Ablation in Liquid." Crystals 13, no. 2 (February 1, 2023): 253. http://dx.doi.org/10.3390/cryst13020253.

Full text
Abstract:
Pulsed laser ablation in liquid (PLAL) is a physical and top-down approach used to fabricate nanoparticles (NPs). Herein, the research methods and current trends in PLAL literature are reviewed, including the recent uses of PLAL for fabricating bimetallic nanoparticles (BNPs) and composites. BNPs have gained attention owing to their advanced physicochemical properties over monometallic NPs. PLAL involves the irradiation of a solid target (usually a rod, plate, or thin film) under a liquid medium. The liquid collects the ejected NPs resulting from the laser processing, which produces a colloid that can be in various applications, including plasmon sensing, energy harvesting, and drug delivery. The most used fabrication techniques, including the use of microorganisms, do not have precise NP size control and require the separation of the microorganisms from the produced NPs. PLAL is quicker at producing NPs than bottom-up methods. The drawbacks of PLAL include the need to find the required laser processing parameters, which requires extensive experimentation, and the complex and non-linear relationships between the inputs and the outputs (e.g., NP size).
APA, Harvard, Vancouver, ISO, and other styles
5

Altuwirqi, Reem M. "Graphene Nanostructures by Pulsed Laser Ablation in Liquids: A Review." Materials 15, no. 17 (August 27, 2022): 5925. http://dx.doi.org/10.3390/ma15175925.

Full text
Abstract:
High-quality graphene has demonstrated remarkable mechanical, thermal, electronic, and optical properties. These features have paved the road for the introduction of graphene into numerous applications such as optoelectronics and energy devices, photodegradation, bioimaging, photodetectors, sensors, and biosensors. Due to this, graphene research has accelerated exponentially, with the aim of reaching a sustainable large-scale production process of high-quality graphene that can produce graphene-based technologies at an industrial scale. There exist numerous routes for graphene fabrication; however, pulsed laser ablation in liquids (PLAL) has emerged as a simple, fast, green, and environmentally friendly method as it does not require the use of toxic chemicals. Moreover, it does not involve the use of expensive vacuum chambers or clean rooms. However, the great advantage of PLAL is its ability to control the size, shape, and structure of the produced nanostructures through the choice of laser parameters and liquid used. Consequently, this review will focus on recent research on the synthesis of graphene nanosheets and graphene quantum dots via PLAL and the effect of experimental parameters such as laser wavelength, pulse width, pulse energy, repetition rate, irradiation time, and liquid media on the produced nanostructures. Moreover, it will discuss extended PLAL techniques which incorporate other methods into PLAL. Finally, different applications that utilize nanostructures produced by PLAL will be highlighted. We hope that this review will provide a useful guide for researchers to further develop the PLAL technique and the fabrication of graphene-based materials.
APA, Harvard, Vancouver, ISO, and other styles
6

Ganash, Entesar A. "Synthesis of silver nanoparticles using pulsed laser ablation in liquid: a review." Laser Physics Letters 20, no. 1 (December 21, 2022): 013001. http://dx.doi.org/10.1088/1612-202x/acab57.

Full text
Abstract:
Abstract Pulsed laser ablation in liquid (PLAL) is an important method for synthesizing metal nanoparticles (NPs). Recently, it has garnered increasing interest as it is simple, rapid, and ecofriendly. Herein, PLAL is proposed as an approach to produce varied sizes of silver nanoparticles (Ag NPs) because NP size plays a vital role in their characteristics and several applications in the physical, chemical, biological, and medical fields. In PLAL, metal NP size could be controlled by either adjusting the laser parameters, such as wavelength, energy, fluence, reptation rate, ablation time, and focusing lens, or by modifying the ablation solvent properties. Herein, PLAL is proved as an effective and simple method for fabricating Ag NPs. This can provide guidance for synthesizing nanomaterials in diverse sizes, types, and shapes for applications in different fields.
APA, Harvard, Vancouver, ISO, and other styles
7

Roske, Christopher W., Jeffery W. Lefler, and Astrid M. Müller. "Complex nanomineral formation utilizing kinetic control by PLAL." Journal of Colloid and Interface Science 489 (March 2017): 68–75. http://dx.doi.org/10.1016/j.jcis.2016.08.079.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Mat Isa, Siti Zaleha, Rafidah Zainon, and Mahbubunnabi Tamal. "State of the Art in Gold Nanoparticle Synthesisation via Pulsed Laser Ablation in Liquid and Its Characterisation for Molecular Imaging: A Review." Materials 15, no. 3 (January 24, 2022): 875. http://dx.doi.org/10.3390/ma15030875.

Full text
Abstract:
With recent advances in nanotechnology, various nanomaterials have been used as drug carriers in molecular imaging for the treatment of cancer. The unique physiochemical properties and biocompatibility of gold nanoparticles have developed a breakthrough in molecular imaging, which allows exploration of gold nanoparticles in drug delivery for diagnostic purpose. The conventional gold nanoparticles synthetisation methods have limitations with chemical contaminations during the synthesisation process and the use of higher energy. Thus, various innovative approaches in gold nanoparticles synthetisation are under development. Recently, studies have been focused on the development of eco-friendly, non-toxic, cost-effective and simple gold nanoparticle synthesisation. The pulsed laser ablation in liquid (PLAL) technique is a versatile synthetic and convincing technique due to its high efficiency, eco-friendly and facile method to produce gold nanoparticle. Therefore, this study aimed to review the eco-friendly gold nanoparticle synthesisation method via the PLAL method and to characterise the gold nanoparticles properties for molecular imaging. This review paper provides new insight to understand the PLAL technique in producing gold nanoparticles and the PLAL parameters that affect gold nanoparticle properties to meet the desired needs in molecular imaging.
APA, Harvard, Vancouver, ISO, and other styles
9

Fazio, Enza, Angela Maria Mezzasalma, Luisa D’Urso, Salvatore Spadaro, Francesco Barreca, Giovanni Gallo, Fortunato Neri, and Giuseppe Compagnini. "N-TiO2-x Nanocatalysts: PLAL Synthesis and Photocatalytic Activity." Journal of Nanomaterials 2020 (June 11, 2020): 1–10. http://dx.doi.org/10.1155/2020/2901516.

Full text
Abstract:
N-TiO2-x nanocatalysts are developed by the pulsed laser ablation in liquid (PLAL) technique, a simple and surfactant-free preparation method. The PLAL approach allows synthesizing chemical-morphological fine-tuning water TiO2-based nanomaterials, starting from targets of different nature (powders and commercial high purity targets). The catalytic activity was investigated using methylene blue (cationic dye) and methyl orange (azo dye). A different photocatalytic response was found for the various kinds of N-TiO2-x. In the first 20 min, under UV and visible light, about 50% and 10% of the methyl orange were removed using the N-TiO2-x and TiO2 colloids, respectively. In addition, we observe that the response towards the methylene blue is comparable in all the synthesized samples under UV irradiation while differing by about 30% under a visible lamp. The enhanced photocatalytic response of the N-TiO2-x nanocatalysts with respect to the TiO2 one is dependent on the content of the nitrogen dopant, surface area, and nitrogen-oxygen bonding configurations.
APA, Harvard, Vancouver, ISO, and other styles
10

Ohsumi, Yu, Pankaj Koinkar, Akihiro Furube, Keh Moh Lin, Subhash Kondawar, and Mahendra A. More. "A study on the field emission properties of Bi2Se3 nanostructures prepared by laser ablation." Modern Physics Letters B 33, no. 14n15 (May 28, 2019): 1940050. http://dx.doi.org/10.1142/s0217984919400505.

Full text
Abstract:
One of the effective methods known as pulse laser ablation in liquid (PLAL), in which a solid target material is immersed in an organic solvent and laser beam is irradiated through liquid on a target material, is a direct method used to generate nanoparticles in liquid medium. The present work is focused on the preparation of bismuth selenide (Bi2Se3) nanoparticles using PLAL to study their field emission characteristics. The PLAL was performed under nanosecond (ns) laser with different ablation time of 120 min and 240 min. The field emission characteristics were measured in the planer “diode” configuration in all metal ultra-high vacuum (UHV) chamber. The prepared Bi2Se3 nanoparticles were analyzed with different characterization techniques such as scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-visible spectroscopy in order to study the surface morphology and structural information. The generation of Bi2Se3 nanoparticles is found after PLAL, which clearly suggests that bulk Bi2Se3 microsheet is transformed into Bi2Se3 nanoparticles. The X-ray spectra and UV spectra show the formation of nanoparticles upon laser ablation. The improvement in the field emission properties is found for laser-ablated Bi2Se3 nanoparticles. The field emission characteristics lead to increase in current density, which can be ascribed to the reduction in size of Bi2Se3 nanoparticles due to laser ablation. The prepared Bi2Se3 nanoparticles could be considered for novel applications in optoelectronics devices.
APA, Harvard, Vancouver, ISO, and other styles
11

Mendivil Palma, Maria Isabel, Bindu Krishnan, Guadalupe Alan Castillo Rodriguez, Tushar Kanti Das Roy, David Avellaneda Avellaneda, and Sadasivan Shaji. "Synthesis and Properties of Platinum Nanoparticles by Pulsed Laser Ablation in Liquid." Journal of Nanomaterials 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/9651637.

Full text
Abstract:
Platinum (Pt) nanoparticles were synthesized by pulsed laser ablation in liquid (PLAL) technique in different liquids (acetone, ethanol, and methanol). Ablation was performed using a Q-switched Nd:YAG laser with output energy of 230 mJ/pulse for 532 nm wavelength. Ablation time and laser energy fluence were varied for all the liquids. Effects of laser energy fluence, ablation time, and nature of the liquid were reported. The mean size, size distributions, shape, elemental composition, and optical properties of Pt nanoparticles synthesized by PLAL were examined by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and UV-Visible absorption spectroscopy.
APA, Harvard, Vancouver, ISO, and other styles
12

Herrmann, Stefan-Martin, Odette Poirier, Pedro Marques-Vidal, Alun Evans, Dominique Arveiler, Gerald Luc, Joseph Emmerich, and François Cambien. "The Leu33/Pro Polymorphism (PIA1/PIA2 ) of the Glycoprotein IIIa (GPIIIa) Receptor Is Not Related to Myocardial Infarction in the ECTIM Study." Thrombosis and Haemostasis 77, no. 06 (1997): 1179–81. http://dx.doi.org/10.1055/s-0038-1656134.

Full text
Abstract:
SummaryThe GPIIb/IIIa receptor complex may contribute to acute coronary syndromes by mediating platelet aggregation. The Leu33/Pro polymorphism (PlAl/PlA2) of the GPIIIa has recently been shown to be associated with CHD in a small case-control study. We have investigated this polymorphism in a large multicenter study of patients with myocardial infarction and controls and found no difference in the distribution of allele and genotype frequencies between cases and controls.
APA, Harvard, Vancouver, ISO, and other styles
13

Soares, M. R. N., M. Ferro, F. M. Costa, and T. Monteiro. "Upconversion luminescence and blackbody radiation in tetragonal YSZ co-doped with Tm3+ and Yb3+." Nanoscale 7, no. 47 (2015): 19958–69. http://dx.doi.org/10.1039/c5nr04052c.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Rashid, Sahar Naji, Thuraya Yarb Sabri, Saif Aamer Mahdi, and Awatif Sabir Jasim. "One-Step Fabricate of Copper Nanoparticles via Pulsed Laser Ablation in Liquid: Influence of Energies on Physical Characterization." Defect and Diffusion Forum 421 (December 22, 2022): 45–52. http://dx.doi.org/10.4028/p-h83031.

Full text
Abstract:
Pulsed laser ablation in liquid (PLAL) is considered a relatively fast, simple to manipulate, cost-effective abraoch, and enables the fabrecation of multiscale micro-nanostructures in one step, facilitating the fabrication process. Copper nanoparticles solution was prepared by PLAL technique using Nd:YAG laser in deionized water at (532 nm), (1000 pulse), and the energies (700 mJ, 800 mJ, 900 mJ, and 1000 mJ) with a fixed distance between the laser source and the sample, fixed amount of liquid, and the liquid rise above the copper was (5 mm). The effect of the excess of the laser energy in the preparation process was tested by analyzing the optical properties of the fabrecated samples by UV-Visible spectrophotometer, SEM, XRD, and EDX measurements.
APA, Harvard, Vancouver, ISO, and other styles
15

Fazio, E., A. Cacciola, A. M. Mezzasalma, G. Mondio, F. Neri, and R. Saija. "Modelling of the optical absorption spectra of PLAL prepared ZnO colloids." Journal of Quantitative Spectroscopy and Radiative Transfer 124 (July 2013): 86–93. http://dx.doi.org/10.1016/j.jqsrt.2013.02.028.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Simão, Teresa, Pascale Chevallier, Jean Lagueux, Marie-France Côté, Christoph Rehbock, Stephan Barcikowski, Marc-André Fortin, and Daniel Guay. "Laser-synthesized ligand-free Au nanoparticles for contrast agent applications in computed tomography and magnetic resonance imaging." Journal of Materials Chemistry B 4, no. 39 (2016): 6413–27. http://dx.doi.org/10.1039/c6tb01162d.

Full text
Abstract:
Pulsed laser ablation in liquids (PLAL) has emerged as a new green chemistry method, advantageous to produce gold nanoparticles-based contrast agents with strong blood retention and for multimodal imaging.
APA, Harvard, Vancouver, ISO, and other styles
17

Fahad, Malak Mohammed, Munaf S. Majeed, and Emad Talib Hashim. "Carbon Nanoparticles Synthesis By Different Nd:Yag Laser Pulse Energy." Journal of Engineering 27, no. 7 (July 1, 2021): 1–12. http://dx.doi.org/10.31026/j.eng.2021.07.01.

Full text
Abstract:
One of the most important techniques for preparing nanoparticle material is Pulsed Laser Ablation in Liquid technique (PLAL). Carbon nanoparticles were prepared using PLAL, and the carbon target was immersed in Ultrapure water (UPW) then irradiated with Q-switched Nd:YAG laser (1064 nm) and six ns pulse duration. In this process, an Nd:YAG laser beam was focused near the carbon surface. Nanoparticles synthesized using laser irradiation were studied by observing the effects of varying incident laser pulse intensities (250, 500, 750, 1000) mJ on the particle size (20.52, 36.97, 48.72, and 61.53) nm, respectively. In addition, nanoparticles were characterized by means of the Atomic Force Microscopy (AFM) test, pH easurement, and an Electrical Conductivity (EC) test of the nano solution. The smallest particle size was produced with (250) mJ laser pulse energy.
APA, Harvard, Vancouver, ISO, and other styles
18

Khdr, Noor Fakher, Bassam G. Rasheed, and Baida M. Ahmed. "Optical and Morphological Properties of Silver Nanoparticles Synthesis by Q-Switched Nd-YAG Laser." Materials Science Forum 1039 (July 20, 2021): 215–24. http://dx.doi.org/10.4028/www.scientific.net/msf.1039.215.

Full text
Abstract:
Abstract. Laser ablation of a silver target immersed in distilled water utilizing Nd: YAG laser with wavelengths of 532nm,1064nm, and 1320nm was carried out to fabricate silver nanoparticles. The synthesis of Ag NPs was carried out using various laser energy (200-1000 mJ) and different pulses (200-1000 pulse). Optical properties for the Ag nanoparticles solution were tested using UV-Visible spectrum, while the morphological properties for the Ag-nanoparticles solution after deposited on glass were tested using the atomic force microscope (AFM). The results showed that the synthesis of the Ag-nanoparticles using pulsed laser ablation in liquid (PLAL) (water) gives nanoparticles with homogeneous grain distribution and uniform surface roughness. It was found that the absorption peaks of Ag NPs increase by increasing the number of pulses shoot for the same laser wavelength and laser energy, and the reported maximum value of absorption peak is 0.363 when using 1000 pulses shoot. AFM results showed that the average diameter of the Ag NPs prepared by PLAL increases with increasing the laser wavelength. However, when using laser wavelengths of 1320nm,1064nm, and 532nm, the resulted average diameter of silver nanoparticles will be 55.38nm, 34.18nm, and 30.3nm, respectively. Finally, the average surface roughness of the Ag NPs prepared by PLAL increased with increasing the laser wavelength. The obtained average surface roughness of silver nanoparticles when using wavelengths of 1320nm,1064nm, and 532nm were 2.75nm, 1.19nm, and1.06nm, respectively.
APA, Harvard, Vancouver, ISO, and other styles
19

Kang, Sukhyun, Jeong Ho Ryu, Byoungsoo Lee, Kyung Hwan Jung, Kwang Bo Shim, Hyuksu Han, and Kang Min Kim. "Laser wavelength modulated pulsed laser ablation for selective and efficient production of graphene quantum dots." RSC Advances 9, no. 24 (2019): 13658–63. http://dx.doi.org/10.1039/c9ra02087j.

Full text
Abstract:
Graphene quantum dots (GQDs) and graphene oxide quantum dots (GOQDs) can be selectively produced by wavelength-modulated pulsed laser ablation in liquid (PLAL) method, which can used in different applications such as optoelectronic and biomedical applications, respectively.
APA, Harvard, Vancouver, ISO, and other styles
20

Salim, Ali Aqeel, Hazri Bakhtiar, Noriah Bidin, and S. K. Ghoshal. "Antibacterial activity of decahedral cinnamon nanoparticles prepared in honey using PLAL technique." Materials Letters 232 (December 2018): 183–86. http://dx.doi.org/10.1016/j.matlet.2018.08.128.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Yudasari, N., M. M. Suliyanti, and C. Imawan. "ZnO-Mg Nanoparticles Produced by Pulsed Laser Ablation in Liquid (PLAL) Technique." Journal of Physics: Conference Series 1552 (May 2020): 012005. http://dx.doi.org/10.1088/1742-6596/1552/1/012005.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Hopp, Béla, Eszter Nagy, Franciska Peták, Tomi Smausz, Judit Kopniczky, Csaba Tápai, Judit Budai, et al. "Production of meloxicam suspension using pulsed laser ablation in liquid (PLAL) technique." Journal of Physics D: Applied Physics 51, no. 16 (March 28, 2018): 165401. http://dx.doi.org/10.1088/1361-6463/aab4be.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

J. Haider, Mohammed, and Mohammed S. Mahdi. "Effect of Laser Wavelengths on the Silver Nanoparticles Size Prepared by PLAL." Engineering and Technology Journal 34, no. 7 (July 1, 2016): 1324–34. http://dx.doi.org/10.30684/etj.34.7a.6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Kaczmarek, Agata, Jacek Hoffman, Jerzy Morgiel, Tomasz Mościcki, Leszek Stobiński, Zygmunt Szymański, and Artur Małolepszy. "Luminescent Carbon Dots Synthesized by the Laser Ablation of Graphite in Polyethylenimine and Ethylenediamine." Materials 14, no. 4 (February 4, 2021): 729. http://dx.doi.org/10.3390/ma14040729.

Full text
Abstract:
Fluorescent carbon dots (CDs) synthesized by pulsed laser ablation in liquid (PLAL) are still interesting materials due to their possible applications. However, unlike CDs produced by the hydrothermal method, CDs produced the synthesis products by the PLAL method were never separated by dialysis, which differentiates the synthesis products and allows the identification of the main source of fluorescence. In this work, the synthesis of fluorescent carbon dots (CDs) was performed by nanosecond laser ablation of a graphite target immersed in polyethyleneimine (PEI) and ethylenediamine (EDA), and the synthesis products were separated by dialysis. The results of optical measurements showed that the main source of luminescence of the obtained nanostructures are fluorescent particles or quasi-molecular fluorophores created in the ablation process. In the case of ablation in PEI, most of the produced molecular fluorophores are associated with carbogenic nanostructures, while in the case of EDA, free fluorescent molecules dominate.
APA, Harvard, Vancouver, ISO, and other styles
25

Rashid, Sahar Naji, Awatif Sabir Jasim, and Kadhim A. Aadimb. "Influence of Number of Pulses on Characterization of Nanoparticles of Copper and its Oxides Synthesized by Nd: YAG Laser Ablation Technique and its Antibacterial Activity." NeuroQuantology 20, no. 3 (March 26, 2022): 150–59. http://dx.doi.org/10.14704/nq.2022.20.3.nq22054.

Full text
Abstract:
Pulsed laser ablation in liquid (PLAL) technique can produce high purity nanoparticles, it is a top-down physical method based on the principle of dividing metal ion bulk precursors into metal atoms, this method is used in this work to synthesis copper nanoparticals (CuPNs) by use Nd: YAG laser with two wavelengths (355 nm) and (532 nm) at energies (500 mJ) and (600 mJ) respectively, with number of pulses (700, 800, 900, 1000, and 1100 P) for each wavelength. The properties of the prepared nanoparticles were studied by UV-Vis, XRD, SEM with EDX, AFM, and FTIR analysis and then study its antibacterial activity by applying it on two types of bacteria with Gram-positive (Staphylococcus aureus, Streptococcus mutans) and two Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa) isolated from the oral cavity. The findings show that CuNPs made using the PLAL approach have antibacterial activity and could be employed to kill hazardous and pathogenic bacteria.
APA, Harvard, Vancouver, ISO, and other styles
26

Ali, Sevan. "Preparation of colloidal Tin sulfide nanoparticles by Pulse Laser Ablation in Liquid (PLAL)." Polytechnic Journal 8, no. 3 (August 2018): 1–12. http://dx.doi.org/10.25156/ptj.2018.8.3.164.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Salim, Ali Aqeel, Noriah Bidin, Sib Krishna Ghoshal, Shumaila Islam, and Hazri Bakhtiar. "Synthesis of truncated tetrahedral cinnamon nanoparticles in citric acid media via PLAL technique." Materials Letters 217 (April 2018): 267–70. http://dx.doi.org/10.1016/j.matlet.2018.01.103.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Fazio, Enza, Luisa D'Urso, Rosalba Saija, Saveria Santangelo, and Fortunato Neri. "Light-matter Interaction Under Intense Field Conditions: Nonlinear Optical Properties of Metallic-dielectric Nanostructures." Current Nanomaterials 4, no. 1 (July 11, 2019): 51–62. http://dx.doi.org/10.2174/2405461504666190510130720.

Full text
Abstract:
Background: Metallic–dielectric plasmonic nanoparticles have recently aroused great interest in view of many and novel technological applications, based on the interaction between light and matter under intense field conditions, in nonlinear integrated photonics and opto-fluidics, thanks to the possibility of tuning their electronic and optical properties through a fine control of the synthesis parameters and their nanoparticles under a high-power laser, like the one used during z-scan measures. Objective: The goal of this work is the study of nonlinear optical properties (as nonlinear refraction, scattering, two-photon absorption, optical limiting) of colloids synthesized in different liquid media by Pulsed laser ablation in liquids (PLAL), which is a photo-assisted synthesis technique ensuring the formation of stable, contaminant-free colloids directly during the ablation process. Methods: Noble metal nanoparticles, metal oxides hybrid nanostructures and silicon-based nanomaterials, were prepared by nanosecond and picosecond PLAL technique, in different media. The third-order nonlinear optical (NLO) properties have been studied by the use of a single beam z-scan technique with Q-switched frequency doubled Nd:YAG laser (λ=532 nm) at 5 ns pulse. Results: 1) A good stability of the PLAL nanocolloids under a high laser power; 2) the limiting threshold reduction inducted by the Ag-Au nanoparticles, the increase of the NLO absorption coefficient β, the reduction of the transmittance/scattering signal and the presence of a pronounced asymmetry of the peak/valley profile of the metal decorated metal oxide nanomaterials compared to the separately produced components. Conclusion: An intriguing coupling between the nature of the optical limiting response and the nanostructures rearrangement upon intense field conditions, explaining z-scan data by a classical approach able to account for the nanoparticles asymmetry and plasmonic effects, are the main results found.
APA, Harvard, Vancouver, ISO, and other styles
29

Scandurra, Antonino, Valentina Iacono, Stefano Boscarino, Silvia Scalese, Maria Grazia Grimaldi, and Francesco Ruffino. "Alkaline Electro-Sorption of Hydrogen Onto Nanoparticles of Pt, Pd, Pt80Pd20 and Cu(OH)2 Obtained by Pulsed Laser Ablation." Nanomaterials 13, no. 3 (January 30, 2023): 561. http://dx.doi.org/10.3390/nano13030561.

Full text
Abstract:
Recently, hydrogen evolution reaction (HER) in alkaline media has received a renewed interest both in the fundamental research as well as in practical applications. Pulsed Laser Ablation in Liquid (PLAL) has been demonstrated as a very useful technique for the unconventional preparation of nanomaterials with amazing electro-catalyst properties toward HER, compared to those of nanomaterials prepared by conventional methods. In this paper, we compared the electro-sorption properties of hydrogen in alkaline media by Pt, Pd, Pt80Pd20, and Cu(OH)2 nanoparticles (NPs) prepared by PLAL. The NPs were placed onto graphene paper (GP). Noble metal particles have an almost spherical shape, whereas Cu(OH)2 presents a flower-bud-like shape, formed by very thin nanowalls. XPS analyses of Cu(OH)2 are compatible with a high co-ordination of Cu(II) centers by OH and H2O. A thin layer of perfluorosulfone ionomer placed onto the surface of nanoparticles (NPs) enhances their distribution on the surface of graphene paper (GP), thereby improving their electro-catalytic properties. The proposed mechanisms for hydrogen evolution reaction (HER) on noble metals and Cu(OH)2 are in line with the adsorption energies of H, OH, and H2O on the surfaces of Pt, Pd, and oxidized copper. A significant spillover mechanism was observed for the noble metals when supported by graphene paper. Cu(OH)2 prepared by PLAL shows a competitive efficiency toward HER that is attributed to its high hydrophilicity which, in turn, is due to the high co-ordination of Cu(II) centers in very thin Cu(OH)2 layers by OH- and H2O. We propose the formation of an intermediate complex with water which can reduce the barrier energy of water adsorption and dissociation.
APA, Harvard, Vancouver, ISO, and other styles
30

Trout, Cory J., Paul Kumpf, Karli Sipps, Julianne C. Griepenburg, and Sean M. O’Malley. "The Influence of Alkanethiols on the Production of Hydrophobic Gold Nanoparticles via Pulsed Laser Ablation in Liquids." Nanomanufacturing 1, no. 3 (September 22, 2021): 98–108. http://dx.doi.org/10.3390/nanomanufacturing1030009.

Full text
Abstract:
The ability to suspend plasmonic metal nanoparticles in apolar environments is an important feat towards harnessing their optical properties for use in amphiphilic biological environments. Pulsed laser Ablation in Liquids (PLAL) is a well-established method for the production of gold nanoparticles (AuNPs) in aqueous environments; however, ablation in organic liquids for the synthesis of hydrophobic AuNPs still has many unknowns, such as the relationship between colloidal stability and the ligand shell. In this study, hydrophobic AuNPs were produced by PLAL of gold in a 1-alkanethiol/n-decane solution and treated with laser fragmentation. Results demonstrate that longer chain length ATs produced particles with a smaller average size; however, there was no strong correlation between alkanethiol (AT) concentration and particle size. Stability was investigated by monitoring the temporal evolution of the extinction spectra which revealed that lower concentrations of AT stabilize the colloids while higher concentrations tend to result in quicker particle aggregation. Furthermore, longer chain length ATs demonstrated improved stability. Additionally, vibrational spectroscopy was employed to examine the AuNP surface chemistry, which pointed to the presence of oxidized carbon species and graphitic carbon.
APA, Harvard, Vancouver, ISO, and other styles
31

Mahmoud, Adel K. "Manufacturing of Zirconia (ZrO2) Nanoparticlesin Sodium Dodecyl Sulfate Surfactant Solution Using Laser Ablation Technique." Advanced Materials Research 871 (December 2013): 194–99. http://dx.doi.org/10.4028/www.scientific.net/amr.871.194.

Full text
Abstract:
Pulsed Laser Ablation in Liquid (PLAL) has become an increasingly important technique for metals production and metal oxides nanoparticles (NPs) and others. This technique has its many advantages compared with other conventional techniques (physical and chemical). This work was devoted for production of Zirconia (ZrO2) nanoparticles via PLAL technique from a solid zirconium target immersed in a group of wet environments in order to study the effect of different surfactants on the optical properties and structure of ZrO2 nanoparticles. The solutions which used for this purpose are sodium dodecyl sulfate (SDS). The produces NPs were characterized by mean of many tests such as UV-visible (UV-Vis.), Transmission Electron Microscope (TEM) and Z-Potential. The UVVis spectra show a blue shift in the presence of SDS solution which indicates quantum confinement property of the NPs. The TEM test shows less than 10 nm average particle sizes with spherical and irregular shapes. It was found that use surfactant solution leads to significantly higher ablation efficiency accomplished with finer spherical nanoparticles sizes. Z-Potential test shows values in the range of (-41.3) mV and (+56.1) mV which indicate for NPs stability with extremely low agglomeration solution.
APA, Harvard, Vancouver, ISO, and other styles
32

Perito, Brunella, Emilia Giorgetti, Paolo Marsili, and Maurizio Muniz-Miranda. "Antibacterial activity of silver nanoparticles obtained by pulsed laser ablation in pure water and in chloride solution." Beilstein Journal of Nanotechnology 7 (March 18, 2016): 465–73. http://dx.doi.org/10.3762/bjnano.7.40.

Full text
Abstract:
Silver nanoparticles (AgNPs) have increasingly gained importance as antibacterial agents with applications in several fields due to their strong, broad-range antimicrobial properties. AgNP synthesis by pulsed laser ablation in liquid (PLAL) permits the preparation of stable Ag colloids in pure solvents without capping or stabilizing agents, producing AgNPs more suitable for biomedical applications than those prepared with common, wet chemical preparation techniques. To date, only a few investigations into the antimicrobial effect of AgNPs produced by PLAL have been performed. These have mainly been performed by ablation in water with nanosecond pulse widths. We previously observed a strong surface-enhanced Raman scattering (SERS) signal from such AgNPs by “activating” the NP surface by the addition of a small quantity of LiCl to the colloid. Such surface effects could also influence the antimicrobial activity of the NPs. Their activity, on the other hand, could also be affected by other parameters linked to the ablation conditions, such as the pulse width. The antibacterial activity of AgNPs was evaluated for NPs obtained either by nanosecond (ns) or picosecond (ps) PLAL using a 1064 nm ablation wavelength, in pure water or in LiCl aqueous solution, withEscherichia coliandBacillus subtilisas references for Gram-negative and Gram-positive bacteria, respectively. In all cases, AgNPs with an average diameter less than 10 nm were obtained, which has been shown in previous works to be the most effective size for bactericidal activity. The measured zeta-potential values were very negative, indicating excellent long-term colloidal stability. Antibacterial activity was observed against both microorganisms for the four AgNP formulations, but the ps-ablated nanoparticles were shown to more effectively inhibit the growth of both microorganisms. Moreover, LiCl modified AgNPs were the most effective, showing minimum inhibitory concentration (MIC) values in a restricted range of 1.0–3.7 µg/mL. An explanation is proposed for this result based on the increased surface reactivity of the metal surface due to the presence of positively charged active sites.
APA, Harvard, Vancouver, ISO, and other styles
33

Mohammed, Salman A. A., Khawla S. Khashan, Majid S. Jabir, Farah A. Abdulameer, Ghassan M. Sulaiman, Mohsen S. Al-Omar, Hamdoon A. Mohammed, Aseel A. Hadi, and Riaz A. Khan. "Copper Oxide Nanoparticle-Decorated Carbon Nanoparticle Composite Colloidal Preparation through Laser Ablation for Antimicrobial and Antiproliferative Actions against Breast Cancer Cell Line, MCF-7." BioMed Research International 2022 (March 8, 2022): 1–13. http://dx.doi.org/10.1155/2022/9863616.

Full text
Abstract:
Copper oxide (CuO) nanoparticle- (NP-) decorated carbon NPs (CNPs) were produced as colloidal suspension through pulsed laser ablation technique in liquid (PLAL) medium. The antimicrobial activity of the produced NPs was tested against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), and anticancer activity was tested against breast cancer cell line, MCF-7, together with the biocompatibility assessment of these NPs. The X-ray diffraction (XRD) patterns of the obtained CNPs showed peaks at 26.58° and 43.78° (2θ) identical to (002) and (111) planes, respectively, of the carbon phases. It also displayed new peaks at 38.5° and 48.64° (2θ) after doping with CuO NPs. Transmission electron microscope (TEM) images revealed the crystalline nature with the spherical shape of the prepared CNPs with 5-40 nm diameter ranges. In addition, the NP effects on the bacterial cell walls and nucleic acid were confirmed using a scanning electron microscope (SEM) and microscopic fluorescence analysis. The NPs showed antibacterial activity through SEM examinations against the pathogenic microbial species, S. aureus and E. coli. In the cellular material release assay, the optical density of the bacterial cells, treated with NPs, displayed a significant increase with the time of exposure to NPs, and the cytotoxicity reached more than 80% of the level for the CNPs decorated with CuO NPs. The morphology of the MCF-7 cells treated with NPs decreased numbers, and the loss of contact with the surrounding cells was observed. These results confirmed that the CNPs decorated with CuO NPs have no observable side effects and can be safely used for therapeutic applications. It is also noteworthy that it is the first report of preparation of CuO NPs decorated with CNPs (CuO NPs-CNPs) by PLAL, and the produced NPs showed antimicrobial antiproliferative activities against breast cancer cell lines, MCF-7. The main advantage of the PLAL technique of synthesizing CuO NPs-CNPs provided a two-step, cost-effective, and eco-friendly method.
APA, Harvard, Vancouver, ISO, and other styles
34

Popov, Anton A., Gleb V. Tikhonowski, Pavel V. Shakhov, Elena A. Popova-Kuznetsova, Gleb I. Tselikov, Roman I. Romanov, Andrey M. Markeev, Sergey M. Klimentov, and Andrei V. Kabashin. "Synthesis of Titanium Nitride Nanoparticles by Pulsed Laser Ablation in Different Aqueous and Organic Solutions." Nanomaterials 12, no. 10 (May 13, 2022): 1672. http://dx.doi.org/10.3390/nano12101672.

Full text
Abstract:
Owing to a strong photothermal response in the near-IR spectral range and very low toxicity, titanium nitride (TiN) nanoparticles (NPs) synthesized by pulsed laser ablation in liquids (PLAL) present a novel appealing object for photo-induced therapy of cancer, but the properties of these NPs still require detailed investigation. Here, we have elaborated methods of femtosecond laser ablation from the TiN target in a variety of liquid solutions, including acetonitrile, dimethylformamide, acetone, water, and H2O2, to synthesize TiN NPs and clarify the effect of liquid type on the composition and properties of the formed NPs. The ablation in all solvents led to the formation of spherical NPs with a mean size depending on the liquid type, while the composition of the NPs ranged from partly oxidized TiN to almost pure TiO2, which conditioned variations of plasmonic peak in the region of relative tissue transparency (670–700 nm). The degree of NP oxidation depended on the solvent, with much stronger oxidation for NPs prepared in aqueous solutions (especially in H2O2), while the ablation in organic solvents resulted in a partial formation of titanium carbides as by-products. The obtained results contribute to better understanding of the processes in reactive PLAL and can be used to design TiN NPs with desired properties for biomedical applications.
APA, Harvard, Vancouver, ISO, and other styles
35

Aziz, Halla M., Mohammed H. K. Al-Mamoori, and Lazein Hassan Aboud. "Synthesis and Characterization of Tio2-Rgo Nanocomposite by Pulsed Laser Ablation in Liquid (PLAL-Method)." Journal of Physics: Conference Series 1818, no. 1 (March 1, 2021): 012206. http://dx.doi.org/10.1088/1742-6596/1818/1/012206.

Full text
APA, Harvard, Vancouver, ISO, and other styles
36

Aqeel Salim, Ali, Noriah Bidin, Hazri Bakhtiar, Sib Krishna Ghoshal, Mohammed Al Azawi, and Ganesan Krishnan. "Optical and structure characterization of cinnamon nanoparticles synthesized by pulse laser ablation in liquid (PLAL)." Journal of Physics: Conference Series 1027 (May 2018): 012002. http://dx.doi.org/10.1088/1742-6596/1027/1/012002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

Tian, Fei, Hong Yang, Yong Guang Zhao, and Hong Mei Cao. "Size Effect on the Transformation from Graphite to Nanodiamonds." Materials Science Forum 787 (April 2014): 412–18. http://dx.doi.org/10.4028/www.scientific.net/msf.787.412.

Full text
Abstract:
The synthesis of nanodiamonds by pulsed-laser ablation in liquid (PLAL) is an attractive research field in developing well-dispersed fluorescent nanodiamonds for bioimaging and life science. However, nanodiamonds are quite different from their widely pursued carbon allotropes both in synthesis conditions and physical properties. It is a great challenge to synthesize metastable phase nanodiamonds that prefer high temperature and high pressure. Despite the progress in the synthesis of nanodiamond by pulsed-laser ablation of graphite target using different laser power densities under room conditions, the transformation from graphite to nanodiamonds are not yet well explained. In order to have a better understanding to the formation of metastable nanodiamonds upon PLAL, the formation of nanodiamond has been elucidated from both the aspects of thermodynamics and kinetics. Due to low laser intensity and long wavelength, synthesis of nanodiamonds is the result of high cooling velocity of high-pressure and high-temperature carbon vapor condensation formed under laser vaporization of graphite particles. When diamond nuclei grow into the right size, they cannot increase and the graphite nucleation begins to form and grow on the diamond at given conditions due to long pulse width for ms-pulsed laser. In fact, the diamond particles enwrapped several layers of graphite have obtained. Moreover, the reasons related 3~6nm diamonds prepared by this new process and having narrow size distribution are also discussed.
APA, Harvard, Vancouver, ISO, and other styles
38

Fernández-Arias, Zimbone, Boutinguiza, Val, Riveiro, Privitera, Grimaldi, and Pou. "Synthesis and Deposition of Ag Nanoparticles by Combining Laser Ablation and Electrophoretic Deposition Techniques." Coatings 9, no. 9 (September 6, 2019): 571. http://dx.doi.org/10.3390/coatings9090571.

Full text
Abstract:
Silver nanostructured thin films have been fabricated on silicon substrate by combining simultaneously pulsed laser ablation in liquid (PLAL) and electrophoretic deposition (ED) techniques. The composition, topography, crystalline structure, surface topography, and optical properties of the obtained films have been studied by energy dispersive X-ray spectroscopy (EDS), high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and UV-visible spectrophotometry. The coatings were composed of Ag nanoparticles ranging from a few to hundred nm. The films exhibited homogenous morphology, uniform appearance, and a clear localized surface plasmon resonance (LSPR) around 400 nm.
APA, Harvard, Vancouver, ISO, and other styles
39

Salim, Ali Aqeel, Sib Krishna Ghoshal, Lau Pik Suan, Noriah Bidin, Khaidzir Hamzah, Maisarah Duralim, and Hazri Bakhtiar. "Liquid media regulated growth of cinnamon nanoparticles: Absorption and emission traits." Malaysian Journal of Fundamental and Applied Sciences 14 (October 25, 2018): 447–49. http://dx.doi.org/10.11113/mjfas.v14n0.1276.

Full text
Abstract:
Customized cinnamon-based nanostructures are of great demand for broad arrays of nanomedical, biomedical and photocatalytic purposes. Conventional methods for cinnamon nanomaterials production with desirable optical absorption and emission properties are still limited. This communication elucidates the role of growth media (liquid ethanol and methanol) in controlling the optical qualities of cinnamon nanoparticles (CNPs). Such CNPs of varied morphologies were prepared using pulsed laser ablation in liquid (PLAL) technique (a simple, an inexpensive, and an eco-friendly approach). In the PLAL process, clean cinnamon sticks (as target material purchased from supermarket) were ablated via Q-switched Nd:YAG laser pulse of wavelength 532 nm operated at optimum fluence of 5.73 J/cm2. As-synthesized CNPs were characterized at room temperature using ultraviolet-visible (UV-Vis) absorption and photoluminescence (PL) emission spectroscopy. Uniformly dispersed high purity colloidal CNPs with narrow size distribution was achieved. The UV-Vis absorption and the PL spectra of CNPs revealed prominent peaks. These observed distinctive absorption and emission traits of studied CNPs were ascribed to the effects of oxygen deficiency, quantum confinement, crystal defects and existence of cinnamaldehyde compounds. In short, the nucleation and growth of CNPs was significantly sensitive to the chemical character of liquid suspension that provided a favorable thermodynamic condition via entropy driven free energy minimization. It was demonstrated that the structural, morphological, physical, optical properties of such CNPs can be tailored by intuitively selecting the liquid growth media. This disclosure affirmed that the present systematic approach can constitute a basis for the large-scale production of CNPs effective for widespread applications.
APA, Harvard, Vancouver, ISO, and other styles
40

Ferman, A. K. h., G. h. S. Jaber, and W. Mahmood. "Fabrication of Zinc Oxide Nanoparticles by pulsed laser ablation in liquid – PLAL and Study their physical Properties." Journal of Physics: Conference Series 1900, no. 1 (May 1, 2021): 012008. http://dx.doi.org/10.1088/1742-6596/1900/1/012008.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Kornecki, Elizabeth, Si-Yin Chung, John C. Holt, Czeslaw S. Cierniewski, George P. Tuszynski, and Stefan Niewiarowski. "Identification of PlAl alloantigen domain on a 66 kDa protein derived from glycoprotein IIIa of human platelets." Biochimica et Biophysica Acta (BBA) - Biomembranes 818, no. 3 (September 1985): 285–90. http://dx.doi.org/10.1016/0005-2736(85)90001-x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Almessiere, Munirah A., Sadik Güner, Yassine Slimani, Mohammed Hassan, Abdulhadi Baykal, Mohammed Ashraf Gondal, Umair Baig, Sergei V. Trukhanov, and Alex V. Trukhanov. "Structural and Magnetic Properties of Co0.5Ni0.5Ga0.01Gd0.01Fe1.98O4/ZnFe2O4 Spinel Ferrite Nanocomposites: Comparative Study between Sol-Gel and Pulsed Laser Ablation in Liquid Approaches." Nanomaterials 11, no. 9 (September 21, 2021): 2461. http://dx.doi.org/10.3390/nano11092461.

Full text
Abstract:
In this study, the samples of the ZnFe2O4 (ZFO) spinel ferrites nanoparticles (SFNPs), Co0.5Ni0.5Ga0.01Gd0.01Fe1.98O4 (CNGaGdFO) SFNPs and (Co0.5Ni0.5Ga0.01Gd0.01Fe1.98O4)x/(ZnFe2O4)y (x:y = 1:1, 1:2, 1:3, 2:1, 3:1 and 4:1) (CNGaGdFO)x/(ZFO)y spinel ferrite nanocomposites (NC) have been synthesized by both sol-gel and Green pulsed laser ablation in liquid (PLAL) approaches. All products were characterized by X-ray powder diffraction (XRD), scanning and transmission electron microscopies (SEM and TEM), elemental mappings and energy dispersive X-ray spectroscopy (EDX). It was objected to tune the magnetic properties of a soft spinel ferrite material with a softer one by mixing them with different fractions. Some key findings are as follows. M-H investigations revealed the exhibition of ferrimagnetic phases for all synthesized samples (except ZnFe2O4) that were synthesized by sol-gel or PLAL methods at both 300 K and 10 K. ZnFe2O4 ferrite NPs exhibits almost paramagnetic feature at 300 K and glass-like phase at very low temperatures below 19.23 K. At RT analyses, maximum saturation magnetization (MS) of 66.53 emu/g belongs to nanocomposite samples that was synthesized by sol-gel method and x:y ratio of 1:3. At 10 K analyses, MS,max = 118.71 emu/g belongs to same nanocomposite samples with ratio of 1:3. Maximum coercivities are 625 Oe belonging to CNGaGdFO and 3564 Oe belonging to NC sample that was obtained by sol-gel route having the 3:1 ratio. Squareness ratio (SQRs = Mr/MS) of NC sample (sol-gel, 4:1 ratio) is 0.371 as maximum and other samples have much lower values until a minimum of 0.121 (laser, 3:1) assign the multi-domain wall structure for all samples at 300 K. At 10 K data, just CNGaGdFO has 0.495 SQR value assigning single domain nature. The maximum values of effective crystal anisotropy constant (Keff) are 5.92 × 104 Erg/g and 2.4 × 105 Erg/g belonging to CNGaGdFO at 300 K and 10 K, respectively. Further, this sample has an internal anisotropy field Ha of 1953 Oe as largest at 300 K. At 10 K another sample (sol-gel, 3:1 ratio) has Ha,max of 11138 Oe which can also be classified as a soft magnetic material similar to other samples. Briefly, most magnetic parameters of NCs that were synthesized by sol-gel route are stronger than magnetic parameters of the NCs that were synthesized by PLAL at both temperatures. Some NC samples were observed to have stronger magnetic data as compared to magnetic parameters of Co0.5Ni0.5Ga0.01Gd0.01Fe1.98O4 NPs at 10 K.
APA, Harvard, Vancouver, ISO, and other styles
43

Koinkar, Pankaj, Kohei Sasaki, Tetsuro Katayama, Akihiro Furube, and Satoshi Sugano. "Laser assisted synthesis of WS2 nanorods by pulsed laser ablation in liquid environment." International Journal of Modern Physics B 35, no. 14n16 (June 24, 2021): 2140007. http://dx.doi.org/10.1142/s0217979221400075.

Full text
Abstract:
Two dimensional (2D) materials are widely attracting the interest of researchers due to their unique crystal structure and diverse properties. In the present work, tungsten disulfide (WS[Formula: see text] nanorods were synthesized by a simple method of pulsed laser ablation in liquid (PLAL) environment. The prepared WS2 are analyzed by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), UV-visible spectroscopy (UV-vis) and Raman spectroscopy to confirm the surface morphology, phase and structure. A possible growth mechanism of WS2 is proposed. This study indicates new door for the preparation of 2D materials with specific morphology.
APA, Harvard, Vancouver, ISO, and other styles
44

Salim, A. A., S. K. Ghoshal, and H. Bakhtiar. "Prominent absorption and luminescence characteristics of novel silver-cinnamon core-shell nanoparticles prepared in ethanol using PLAL method." Radiation Physics and Chemistry 190 (January 2022): 109794. http://dx.doi.org/10.1016/j.radphyschem.2021.109794.

Full text
APA, Harvard, Vancouver, ISO, and other styles
45

Al-Maher, Mohammed, Najwa Al-Barhawi, and Mushtaq Al-Jubbori. "Study the effect of gamma ray on silver nanoparticles prepared by pulse laser ablation in liquid technique (PLAL)." JOURNAL OF EDUCATION AND SCIENCE 30, no. 2 (February 11, 2021): 101–10. http://dx.doi.org/10.33899/edusj.2021.129320.1136.

Full text
APA, Harvard, Vancouver, ISO, and other styles
46

Salim, Ali Aqeel, Hazri Bakhtiar, Noriah Bidin, and Sib Krishna Ghoshal. "Unique attributes of spherical cinnamon nanoparticles produced via PLAL technique: Synergy between methanol media and ablating laser wavelength." Optical Materials 85 (November 2018): 100–105. http://dx.doi.org/10.1016/j.optmat.2018.08.054.

Full text
APA, Harvard, Vancouver, ISO, and other styles
47

Kamil, A. A., N. A. Bakr, T. H. Mubarak, and J. Al-Zanganawee. "Synthesis and study of the optical and structural properties of Au and Ag nanoparticles by pulsed laser ablation (PLAL) technique." Digest Journal of Nanomaterials and Biostructures 16, no. 4 (October 2021): 1219–26. http://dx.doi.org/10.15251/djnb.2021.164.1219.

Full text
Abstract:
Gold and silver nanoparticles (NPs) were synthesized by Q-switched (Nd:YAG) Pulsed Laser Ablation in Liquid (PLAL). The colloidal solutions are prepared separately using wavelength between 532-1064 nm pulsed laser ablation of gold and silver targets that are immersed in distilled water. The absorption spectra and color variations of gold and silver NPs at six different laser pulses (150, 250,350, 450, 550, 650 pulses) were investigated. UV–Vis spectroscopy test displayed bands ranged between 520 nm for gold and 404-410 nm for silver. TEM revealed a spherical shape of gold and a semi-spherical shape of silver NPs with an average sizes of (7.95 nm to 11.36 nm) and (15.62 nm to 20.49 nm) from two pulses (150 and 650), respectively. At all numbers of pulses applied, XRD showed a cubic crystalline structure of Au particles, as well as the creation of a pure cubic crystal structure of Ag particles and another cubic crystal structure attributed to AgO particles.
APA, Harvard, Vancouver, ISO, and other styles
48

Khaniabadi, Pegah Moradi, Naser M. Ahmed, Mohammed Ali Dheyab, Azlan Abdul Aziz, and M. A. Almessiere. "Structure, morphology and absorption characteristics of gold nanoparticles produced via PLAL method: Role of low energy X-ray dosage." Surfaces and Interfaces 24 (June 2021): 101139. http://dx.doi.org/10.1016/j.surfin.2021.101139.

Full text
APA, Harvard, Vancouver, ISO, and other styles
49

Yudasari, Nurfina, Rahma Anugrahwidya, Dahlang Tahir, Maria M. Suliyanti, Yuliati Herbani, Cuk Imawan, Munawar Khalil, and Dede Djuhana. "Enhanced photocatalytic degradation of rhodamine 6G (R6G) using ZnO–Ag nanoparticles synthesized by pulsed laser ablation in liquid (PLAL)." Journal of Alloys and Compounds 886 (December 2021): 161291. http://dx.doi.org/10.1016/j.jallcom.2021.161291.

Full text
APA, Harvard, Vancouver, ISO, and other styles
50

Norsyuhada, W., W. Mohd Shukri, Hazri Bakhtiar, Shumaila Islam, and Noriah Bidin. "Synthesis and Characterization of Gold-Silver Nanoparticles in Deionized Water by Pulsed Laser Ablation (PLAL) Technique at Different Laser Parameter." International Journal of Nanoscience 18, no. 01 (January 24, 2019): 1850015. http://dx.doi.org/10.1142/s0219581x18500151.

Full text
Abstract:
Gold and silver nanoparticles (NPs) are physically synthesized using Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG)-pulsed laser ablation in liquid (PLAL) technique which is a rapid, simple and efficient one-step synthesis. The gold and silver colloidal solutions are separately prepared by 1064[Formula: see text]nm of pulsed laser ablation of metallic target (gold and silver) which is immersed in deionized water. Ultraviolet–visible spectroscopy (UV–Vis) analysis shows the absorption band of gold and silver NPs at [Formula: see text][Formula: see text]nm and [Formula: see text][Formula: see text]nm, respectively. The absorption spectra and color variations of gold and silver NPs at three different laser parameters (output laser energies, target distances from focal point and laser time exposures). High-resolution transmission electron microscopy shows the spherical shape of gold and silver NPs with 34[Formula: see text]nm and 33[Formula: see text]nm diameter of size, respectively, are reported. The aggregation and particle sizes of gold and silver NPs due to minimum energy (75[Formula: see text]mJ) and maximum energy (311[Formula: see text]mJ) are observed.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'PLAL' for other source types:
Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography