Elliptic polarisation of light scattered by colloidal solutions

1954 ◽  
Vol 40 (3) ◽  
Author(s):  
R. S. Krishnan ◽  
P. S. Narayanan ◽  
S. R. Sivarajan
Keyword(s):  
Colloidal Solutions ◽  
Elliptic Polarisation

New Computer System for Recognizing Micro- and Nano-Sized Objects in Semiconductors and Colloidal Solutions

2016 ◽  
Vol 8 (4(2)) ◽  
pp. 04060-1-04060-9 ◽  
Author(s):  
L. Diachenko ◽  
◽  
E. Minov ◽  
S. Ostapov ◽  
P. Fochuk ◽  
...  
Keyword(s):  
Computer System ◽  
Colloidal Solutions

THE EXAMINATION OF COLLOIDAL SOLUTIONS

BMJ ◽  
1923 ◽  
Vol 1 (3254) ◽  
pp. 834-834 ◽  
Author(s):  
A. J. Clark
Keyword(s):  
Colloidal Solutions

scholarly journals Development of Antibacterial Protective Coatings Active against MSSA and MRSA on Biodegradable Polymers

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 659
Author(s):  
Iva Rezić ◽  
Mislav Majdak ◽  
Vanja Ljoljić Bilić ◽  
Ivan Pokrovac ◽  
Lela Martinaga ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Biodegradable Polymers ◽  
Chronic Wounds ◽  
Protective Coatings ◽  
Metal Oxide Nanoparticles ◽  
Colloidal Solutions ◽  
Fused Deposition ◽  
Antimicrobial Nanoparticles ◽  
Mrsa Strains

In this work the in vitro antimicrobial activity of colloidal solutions of nine different commercially available nanoparticles were investigated against Staphylococcus aureus strains, both methicillin-sensitive (MSSA) and methicillin-resistant (MRSA). Research covered antimicrobial investigation of different metal and metal-oxide nanoparticles, including Ag 10 nm, Ag 40 nm, Al2O3 100 nm, Au 20 nm, Pt 4 nm, TiO2 100 nm, Y2O3 100 nm, ZnO 100 nm and ZrO2 100 nm nanoparticles. Such materials were foreseen to be applied as coatings on 3D-printed biodegradable polymers: i.e., catheters, disposable materials, hospital bedding items, disposable antimicrobial linings and bandages for chronic wounds. Therefore, the antimicrobial activity of the nanoparticles was determined by agar well diffusion assays and serial microdilution broth assays. In addition, the chromatographic characterization of elements present in trace amounts was performed as a method for tracing the nanoparticles. Moreover, the potential of preparing the rough surface of biodegradable polymers for coating with antimicrobial nanoparticles was tested by 3D-printing fused deposition methodology. The in vitro results have shown that particular nanoparticles provided powerful antimicrobial effects against MSSA and MRSA strains, and can be easily applied on different biopolymers.

scholarly journals A preliminary investigation of the conditions which determine the stability of irreversible hydrosols

1900 ◽  
Vol 66 (424-433) ◽  
pp. 110-125 ◽  
Keyword(s):  
Slow Rate ◽  
Preliminary Investigation ◽  
Colloidal Solutions ◽  
Solid Matter ◽  
The Stability

It has long been held that a large number of colloidal solutions are related to or identical with suspensions of solid matter in a fluid in which the particles of solid are so small as to settle at an infinitely slow rate. Such solutions are the colloidal solutions of metals and of sulphides such as those of antimony, arsenic, and cadmium.

scholarly journals Red Light-Emitting Diodes with All-Inorganic CsPbI3/TOPO Composite Nanowires Color Conversion Films

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Lung-Chien Chen ◽  
Yi-Tsung Chang ◽  
Ching-Ho Tien ◽  
Yu-Chun Yeh ◽  
Zong-Liang Tseng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Emitting Diode ◽  
Red Light ◽  
Trioctylphosphine Oxide ◽  
Optical And Electrical Properties ◽  
Colloidal Solutions ◽  
High Quality ◽  
Light Emitting ◽  
Hot Injection ◽  
Color Conversion

AbstractThis work presents a method for obtaining a color-converted red light source through a combination of a blue GaN light-emitting diode and a red fluorescent color conversion film of a perovskite CsPbI3/TOPO composite. High-quality CsPbI3 quantum dots (QDs) were prepared using the hot-injection method. The colloidal QD solutions were mixed with different ratios of trioctylphosphine oxide (TOPO) to form nanowires. The color conversion films prepared by the mixed ultraviolet resin and colloidal solutions were coated on blue LEDs. The optical and electrical properties of the devices were measured and analyzed at an injection current of 50 mA; it was observed that the strongest red light intensity was 93.1 cd/m2 and the external quantum efficiency was 5.7% at a wavelength of approximately 708 nm when CsPbI3/TOPO was 1:0.35.

scholarly journals Reactivity and Chemical Sintering of Carey Lea Silver Nanoparticles

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1525
Author(s):  
Sergey Vorobyev ◽  
Elena Vishnyakova ◽  
Maxim Likhatski ◽  
Alexander Romanchenko ◽  
Ivan Nemtsev ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Flexible Electronics ◽  
Photoelectron Spectroscopy ◽  
Colloidal Solutions ◽  
Ag Nps ◽  
Wide Range ◽  
Carboxylic Groups ◽  
The Media ◽  
Sulfide Ions

Carey Lea silver hydrosol is a rare example of very concentrated colloidal solutions produced with citrate as only protective ligands, and prospective for a wide range of applications, whose properties have been insufficiently studied up to now. Herein, the reactivity of the immobilized silver nanoparticles toward oxidation, sulfidation, and sintering upon their interaction with hydrogen peroxide, sulfide ions, and chlorocomplexes of Au(III), Pd(II), and Pt(IV) was investigated using SEM and X-ray photoelectron spectroscopy (XPS). The reactions decreased the number of carboxylic groups of the citrate-derived capping and promoted coalescence of 7 nm Ag NPs into about 40 nm ones, excluding the interaction with hydrogen peroxide. The increased nanoparticles form loose submicrometer aggregates in the case of sulfide treatment, raspberry-like micrometer porous particles in the media containing Pd(II) chloride, and densely sintered particles in the reaction with inert H2PtCl6 complexes, probably via the formation of surface Ag-Pt alloys. The exposure of Ag NPs to HAuCl4 solution produced compact Ag films along with nanocrystals of Au metal and minor Ag and AgCl. The results are promising for chemical ambient temperature sintering and rendering silver-based nanomaterials, for example, for flexible electronics, catalysis, and other applications.

Highly Sensitive and Selective Zirconia-Based Propene Sensor using Nanostructured Gold Sensing Electrodes Fabricated from Colloidal Solutions

2009 ◽  
Vol 113 (18) ◽  
pp. 7857-7862 ◽  
Author(s):  
Vladimir V. Plashnitsa ◽  
Perumal Elumalai ◽  
Toshikazu Kawaguchi ◽  
Yuki Fujio ◽  
Norio Miura
Keyword(s):  
Colloidal Solutions ◽  
Highly Sensitive ◽  
Nanostructured Gold
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