Amyloid Transition of Ubiquitin on Silver Nanoparticles Produced by Pulsed Laser Ablation in Liquid as a Function of Stabilizer and Single-Point Mutations

2014 ◽  
Vol 20 (34) ◽  
pp. 10745-10751 ◽  
Author(s):  
Vincenzo Mangini ◽  
Marcella Dell'Aglio ◽  
Angelo De Stradis ◽  
Alessandro De Giacomo ◽  
Olga De Pascale ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Laser Ablation ◽  
Single Point ◽  
Point Mutations ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Laser Ablation In Liquid ◽  
Single Point Mutations

Synthesis of silver nanoparticles and antimony oxide nanocrystals by pulsed laser ablation in liquid media

2012 ◽  
Vol 110 (4) ◽  
pp. 809-816 ◽  
Author(s):  
M. I. Mendivil ◽  
B. Krishnan ◽  
F. A. Sanchez ◽  
S. Martinez ◽  
J. A. Aguilar-Martinez ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Antimony Oxide ◽  
Liquid Media ◽  
Laser Ablation In Liquid

scholarly journals METHODS FOR OBTAINING SILVER NANOPARTICLES - A REVIEW.

2021 ◽  
Vol 3 ◽  
pp. 78-83
Author(s):  
Risham Singh Ghalot ◽  
Lyubomir Lazov
Keyword(s):  
Silver Nanoparticles ◽  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Cost Effective ◽  
Aqueous Environment ◽  
Laser Ablation In Liquid ◽  
Environment Friendly ◽  
Relevant Today

Silver has been part of active medical use for treatment and disinfection from ages, even in the present times. Particularly relevant today is the question of the effect of silver nanoparticles on bacteria and viruses, including against COVID-19. The study reviews distinct methods for producing silver nanoparticles. The comparison and preferences of different methods based on their classification and features are reviewed. The main goal of this study is to reveal the top-notch method and their benefits and prospects of the possibilities of the method - laser ablation, as a cost-effective and environment friendly technology for generating silver nanoparticles in an aqueous environment. The method of Pulsed Laser Ablation in Liquid for obtaining nanoparticles is explained in detail. The paper is divided into several main parts, starting with a briefing on silver and its nanoparticles and is followed by various methods for their production. 

scholarly journals Antibacterial activity of silver nanoparticles obtained by pulsed laser ablation in pure water and in chloride solution

2016 ◽  
Vol 7 ◽  
pp. 465-473 ◽  
Author(s):  
Brunella Perito ◽  
Emilia Giorgetti ◽  
Paolo Marsili ◽  
Maurizio Muniz-Miranda
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Laser Ablation ◽  
Active Sites ◽  
Colloidal Stability ◽  
Pure Water ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Surface Reactivity ◽  
Laser Ablation In Liquid

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.

scholarly journals Template-free, single step preparation of hollow Coo nano spheres using pulsed laser ablation in liquid environment

2021 ◽  
pp. 103317
Author(s):  
Muidh Alheshibri ◽  
Sultan Akhtar ◽  
Abbad Al Baroot ◽  
Khaled Elsayed ◽  
Hassan S Al Qahtani ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Single Step ◽  
Laser Ablation In Liquid ◽  
Liquid Environment ◽  
Template Free

Laser assisted synthesis of WS2 nanorods by pulsed laser ablation in liquid environment

2021 ◽  
pp. 2140007
Author(s):  
Pankaj Koinkar ◽  
Kohei Sasaki ◽  
Tetsuro Katayama ◽  
Akihiro Furube ◽  
Satoshi Sugano
Keyword(s):  
Electron Microscopy ◽  
Laser Ablation ◽  
2D Materials ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Laser Ablation In Liquid ◽  
Simple Method ◽  
Liquid Environment ◽  
Transmission Electron ◽  
Specific Morphology

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.

Sign in / Sign up

Export Citation Format

Share Document