scholarly journals Emergency radiation threshold in an ethanolic solution of the kumarin-30 dye with zno nanoparticles under irradiation by femtosecond laser

2020 ◽  
pp. 135-138
Author(s):  
P. A. Babushkin ◽  
◽  
et al.
Keyword(s):  
Femtosecond Laser ◽  
Zno Nanoparticles ◽  
Ethanolic Solution

Femtosecond Laser-Assisted Synthesis of ZnO Nanoparticles in Solvent with Visible Emission for Temperature Sensing

NANO ◽  
2019 ◽  
Vol 14 (05) ◽  
pp. 1950054 ◽  
Author(s):  
Huanhuan Xu ◽  
Lihe Yan ◽  
Jinhai Si ◽  
Yanmin Xu ◽  
Xun Hou
Keyword(s):  
Femtosecond Laser ◽  
Zno Nanoparticles ◽  
Visible Region ◽  
Femtosecond Laser Ablation ◽  
Temperature Sensing ◽  
Water Soluble ◽  
Zno Nanoparticle ◽  
Zno Nps ◽  
Linear Temperature ◽  
Methyl Pyrrolidone

Zinc oxide (ZnO) nanoparticles (NPs) are synthesized by one-step femtosecond laser ablation of zinc powders in n-methyl pyrrolidone (NMP) at room temperature. The as-prepared ZnO NPs are fairly stable, water-soluble and have abundant surface functional groups resulting in a strong fluorescence in the visible region. By further annealing the ZnO NPs in the reacting solvent up to 120∘C, the photoluminescence (PL) intensity of material can be significantly enhanced. Besides, the PL of ZnO NPs can change from blue to green by controlling the annealing temperature. The products exhibit excellent temperature sensing with high temperature sensitivity and a 1.3% change per ∘C response over a linear temperature sensing range (6–84[Formula: see text] in aqueous buffer, which matches well with the physiologically relevant temperatures. Hence, the ZnO nanoparticle system can serve as a promising candidate for practical fluorescent temperatures nanosensors which can be used for accurate temperature monitoring within biological systems.

Femtosecond laser assisted antibacterial activity of ZnO nanoparticles

2017 ◽  
Author(s):  
Natanael Cuando ◽  
Yryx Luna ◽  
Crysthal Alvarez ◽  
David Halaney ◽  
Santiago Camacho ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Femtosecond Laser ◽  
Zno Nanoparticles

Band gap tuning of ZnO nanoparticles via Mg doping by femtosecond laser ablation in liquid environment

2012 ◽  
Vol 258 (23) ◽  
pp. 9408-9411 ◽  
Author(s):  
E. Chelnokov ◽  
M. Rivoal ◽  
Y. Colignon ◽  
D. Gachet ◽  
L. Bekere ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Band Gap ◽  
Zno Nanoparticles ◽  
Femtosecond Laser Ablation ◽  
Laser Ablation In Liquid ◽  
Liquid Environment ◽  
Mg Doping ◽  
Band Gap Tuning

Stimulated Emission Thresholds of Ethanol Solution of Coumarin-30 Dye with Incorporated ZnO Nanoparticles Upon Irradiation with Femtosecond Laser Pulses

2020 ◽  
Vol 63 (8) ◽  
pp. 1438-1441
Author(s):  
P. A. Babushkin ◽  
A. V. Burnashov ◽  
V. A. Donchenko ◽  
Al. A. Zemlyanov ◽  
V. K. Oshlakov ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Zno Nanoparticles ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Ethanol Solution ◽  
Stimulated Emission

Nanosecond laser-induced breakdown assisted by femtosecond laser pre-ionization in air: the effect on spatial resolution and continuous radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20701
Author(s):  
Bo Li ◽  
Xiaofeng Li ◽  
Zhifeng Zhu ◽  
Qiang Gao
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanosecond Laser ◽  
Breakdown Threshold ◽  
Powerful Technique ◽  
Breakdown Spectroscopy ◽  
Continuous Radiation ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for quantitative diagnostics of gases. The spatial resolution of LIBS, however, is limited by the volume of plasma. Here femtosecond-nanosecond dual-pulsed LIBS was demonstrated. Using this method, the breakdown threshold was reduced by 80%, and decay of continuous radiation was shortened. In addition, the volume of the plasma was shrunk by 85% and hence, the spatial resolution of LIBS was significantly improved.

Femtosecond laser assisted penetrating keratoplasty

2006 ◽  
Vol 223 (S 1) ◽  
Author(s):  
MP Holzer ◽  
TM Rabsilber ◽  
GU Auffarth
Keyword(s):  
Femtosecond Laser ◽  
Penetrating Keratoplasty

Polycaprolactone based membranes for the degradation of diclofenac present in water samples using ZnO nanoparticles as the active agent

MRS Advances ◽  
2020 ◽  
Vol 5 (61) ◽  
pp. 3153-3161
Author(s):  
Marco Antonio Juárez Sánchez ◽  
Miguel Ángel Meléndez Lira ◽  
Celestino Odín Rodríguez Nava
Keyword(s):  
Zno Nanoparticles ◽  
Wastewater Treatment Plants ◽  
Active Agent ◽  
Heterogeneous Photocatalysis ◽  
Nano Particles ◽  
Electrical Characteristics ◽  
Unit Operation ◽  
Fields Of Study ◽  
Drug Contamination ◽  
Positive Results

AbstractDrug contamination in water is one of the current fields of study. Since 1990, the presence of drugs in drinking water has been a concern to scientists and public. In Mexico, these organic compounds are not efficiently removed in wastewater treatment plants; therefore, alternative methodologies have been studied that allow these compounds to have a high percentage of degradation or be completely degraded. One example of these techniques is heterogeneous photocatalysis which has obtained positive results in the degradation of drugs using ZnO nanoparticles. These are commonly selected for their electrical characteristics, even though they disperse in water and an additional unit operation is required to separate them from the liquid medium. To eliminate drugs with nano particles in a single stage, polycaprolactone-based membranes with adhered ZnO nanoparticles, by means of electrospinning, were prepared to degrade drugs such as diclofenac. The technique used has shown to efficiently break down diclofenac in 4 hours according to the capillary electrophoresis readings.

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