Review
Chemistry, Multidisciplinary
Muidh Alheshibro
Summary: This article provides an overview of pulsed laser ablation in a liquid method for the synthesis of Au-Ag bimetallic nanoparticles. It explores the critical factors, including material composition, laser parameters, and environmental conditions. The article also highlights the promising applications in antibacterial, photothermal, and diagnostic fields, while acknowledging the existing limitations and challenges.
Article
Optics
Jessy Simon, B. Anugop, V. P. N. Nampoori, M. Kailasnath
Summary: Bimetallic Au/Ag nanoparticles were successfully synthesized using laser ablation technique, with silver plate ablated in colloidal gold solution. Confirmation of bimetallic nanoparticles formation was done through TEM and absorption spectroscopy, while stability was established through zeta potential analysis and thermal diffusivity was determined with a dual-beam mode matched thermal lens technique.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Alexey Rybaltovsky, Evgeniy Epifanov, Dmitriy Khmelenin, Andrey Shubny, Yuriy Zavorotny, Vladimir Yusupov, Nikita Minaev
Summary: Two methods are proposed for synthesizing bimetallic Au/Ag nanoparticles, utilizing different geometric configurations and laser sources. The first configuration demonstrates the possibility of obtaining Ag/Au alloy nanoparticles, while the second configuration shows the possibility of obtaining core-shell bimetallic Au/Ag nanoparticles.
Article
Materials Science, Multidisciplinary
Reshma Beeram, Venugopal Rao Soma
Summary: Choosing a wavelength close to the electronic excitation of the analyte molecules enhances the Surface Enhanced Raman Spectroscopy (SERS) signal, known as Surface Enhanced Resonance Raman Spectroscopy (SERRS). This study demonstrates the use of SERRS for ultra-trace detection of different molecules. Diverse SERS substrates were fabricated through laser ablation and the debris of nanoparticles, usually considered undesirable, was utilized for enhanced detection.
Article
Chemistry, Analytical
Jing Tang, Tao Hu, Nali Li, Yanli Zhu, Jie Li, Shengbiao Zheng, Jiahao Guo
Summary: In this study, Ag-CoNi-MOF was developed as a material for electrochemical determination of luteolin. The Ag-CoNi-MOF sensor showed a broader linear response range, higher sensitivity, and better anti-interference properties compared to traditional electrochemical sensors, making it a potential material for the food industry.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Sravani Kaja, Amit Nag
Summary: Bimetallic Ag-Cu alloy microflowers were fabricated as SERS substrates with tunable surface compositions, achieving a limit of detection in the zeptomolar range for analyte molecules like R6G. Through varying reaction conditions, it was found that 10% Ag-Cu alloy microflowers produced the maximum SERS intensity for resonant R6G molecules.
Article
Chemistry, Physical
Mohamed Almokhtar, Hesham Fares, Koichi Inoue, Kazuhiko Matsumoto
Summary: Raman spectra of graphene on single Ag nanoparticles exhibit promising features for quantum and imaging/sensing applications in the nanoscale regime, with the graphene acting as a Raman Thermometry and the Ag NPs serving as plasmonic nanoheaters excited by the probe laser. Thermal probing resolution can reach nanometer scale determined by the graphene area attached to the Ag NPs.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Multidisciplinary
Khaled A. Elsayed, Munther Alomari, Q. A. Drmosh, Muidh Alheshibri, Abbad Al Baroot, T. S. Kayed, Abdullah A. Manda, Amal L. Al-Alotaibi
Summary: In this study, collidal bimentalic nanoparticles of ZnO-Ag were synthesized using laser ablation technique. The synthesized nanoparticles were characterized and it was found that their size distribution ranged from 30 to 130 nm. The anticancer activity of the ZnO-Ag composite was confirmed through cell cytotoxicity testing, indicating its potential as a cancer treatment.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Materials Science, Biomaterials
Xiaoying Zhang, Xin Wang, Peng Wang, Qiuyue Fu, Zhaozhen Zhu, Chaocai Luo, Jieyi Chen, Yanjiao Zhang, Shaoxin Li
Summary: A facile strategy for the fabrication of a novel transition metal telluride-based 2D-metal SERS substrate is proposed in this study. Ag-niobium ditelluride nanocomposites are synthesized and used as ultrasensitive SERS probes to identify and classify three types of muscle tissues, as well as monitor the skeletal muscle stretching process.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Chemistry, Physical
Bakhtiar Ali, Han Xu, Dashavir Chetty, Robert T. Sang, Igor Litvinyuk, Maksym Rybachuk
Summary: The degree of laser-induced graphitization in single crystal chemical vapor deposited diamond was studied. The sp(3) phase transitions to sp(2) aromatic crystalline graphitic fraction below a critical fluence, above which amorphous carbon is formed. The increase in fluence leads to a significant increase in the depth of graphitized areas and cleavage of C=O bonds.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Spectroscopy
Annah M. Ondieki, Zephania Birech, Kenneth A. Kaduki, Peter W. Mwangi, Nancy M. Mwenze, Moses Juma, Carolyne Jeptoo, M. S. Dlamini, Malik Maaza
Summary: This research introduces surface-enhanced Raman spectroscopy (SERS) substrates based on colloidal silver nanoparticles (AgNPs) produced by laser ablation of silver granules. The optimal parameters were determined by investigating the effects of laser power, pulse repetition frequency, and ablation duration on the Surface Plasmon Resonance peak of AgNPs solutions. The synthesized AgNPs were characterized and found to have potential applications in forensics, drug efficacy monitoring, disease diagnostics, and pathogen detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Engineering, Multidisciplinary
Wahyudiono, Shota Kawai, Mardiansyah Mardis, Siti Machmudah, Hideki Kanda, Yaping Zhao, Motonobu Goto
Summary: Bimetallic nanoparticles were formed by pulsed laser ablation on a gold titanium film, with experiments conducted at room temperature. The study demonstrated the dispersion of gold, titanium, and gold-titanium nanoparticles in the aqueous solution products.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Sravani Kaja, Ashin Varghese Mathews, Venkata Vamsi Krishna Venuganti, Amit Nag
Summary: Surface-enhanced Raman spectroscopy (SERS) is a promising label-free technology for clinical monitoring due to its high sensitivity and multiplexing ability. It can accelerate the screening of important drugs in the blood and plasma of cancer patients in a simpler, faster, and less-expensive manner.
Article
Materials Science, Multidisciplinary
Stefan Andrei Irimiciuc, Sergii Chertopalov, Jiri Bulir, Ladislav Fekete, Martin Vondracek, Michal Novotny, Valentin Craciun, Jan Lancok
Summary: Transitioning PLD technique from experimental to industrial use requires complex tools for monitoring deposition processes; LP and OES measurements showed the influence of Ar pressure on ion distribution during PLD of silver films. OES confirmed generation of energetic ions with Ar addition; perturbative effects were observed at pressures above 10 Pa, affecting plasma stability. The correlation between plasma electronic distribution and thin film thickness profile highlights the importance of monitoring and controlling plasma dynamics in thin film deposition.
Article
Chemistry, Physical
Laya Anjo, Ana Khajehnezhad, Amir Hossein Sari, Seyed Ali Sebt, Mukhlis M. Ismail
Summary: Fe20:Ag80, Fe50:Ag50, and Fe80:Ag20 bimetallic nanoparticles were prepared using laser ablation method on Fe/Ag/polyvinyl alcohol (PVA) composite. The ratio of Fe to Ag atoms and the ablation time affected the wavelength, intensity, and width of the plasmon absorption peak. An increase in Fe content resulted in a redshift and a decrease in intensity, as well as an increase in the width of the plasmon absorption peaks. Transmission electron microscopy (TEM) analysis revealed three types of particles: Ag nanoparticles, Ag/Fe core/shells, and Fe nanoparticles. The formation of a core-shell structure between Fe and Ag caused a decrease in Ag plasmon resonance frequency and a redshift in its absorption peak. Vibrating sample magnetometer (VSM) measurements showed that the Fe/Ag bimetallic nanoparticles exhibited superparamagnetic properties.