Characterization and Properties of Nanostructures in Liquids and Liquid/Liquid Interfaces

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: 20 May 2025 | Viewed by 2088

Special Issue Editor


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Guest Editor
Laboratoire Réactions et Génie des Procédés, UMR 7274 CNRS, Université de Lorraine, 54000 Nancy, France
Interests: interfaces; surface modification; particles; emulsions; interfacial rheology; wetting and electrowetting; complex fluids; soft matter
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Special Issue Information

Dear Colleagues,

The majority of chemically formulated products contain nanostructures in the liquid bulk and/or at the interfaces. Ice creams, sunscreen lotions, toothpastes, lipsticks, paints, glues, and bituminous binders are some examples. These products are polyphasic systems where several phases (liquid, solid, gas) must coexist, leading to various interfaces. To obtain the specific required end-user properties, a subtle combination of scientific disciplines comes into play: formulation science (colloid chemistry, dispersed systems, surfactants, nanoparticles), chemical engineering (mixing, emulsification processes), rheology (flowing, hydrodynamic and structural characteristic properties), and interfaces (interfacial rheology, particles adsorption, surface tension, wetting). In addition, the behavior of nanoparticles or nano-objects in the liquid bulk and at various interfaces has become a hot topic in this field.

Therefore, the main focus of this Special Issue is on the recent advances in the characterization and properties of nanostructures in liquids and liquid/liquid Interfaces. Research areas may include, but are not exclusive to:

  • Particle-laden interfaces;
  • Protein-laden interface;
  • Emulsions, Pickering emulsions, foams, and gels;
  • The relationship between interfacial and bulk properties;
  • The repartition of nanostructures in liquid systems;
  • The repartition of nanostructures in liquid/liquid systems.

Dr. Thibault Roques-Carmes
Guest Editor

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Keywords

  • interfacial rheology
  • rheology
  • emulsions
  • foams
  • gels
  • soft matter
  • colloids
  • surfactants
  • proteins

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Published Papers (2 papers)

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Research

21 pages, 5788 KiB  
Article
Using Femtosecond Laser Light to Investigate the Concentration- and Size-Dependent Nonlinear Optical Properties of Laser-Ablated CuO Quantum Dots
by Mohamed Ashour, Rasha Ibrahim, Yasmin Abd El-Salam, Fatma Abdel Samad, Alaa Mahmoud and Tarek Mohamed
Nanomaterials 2024, 14(20), 1674; https://doi.org/10.3390/nano14201674 - 18 Oct 2024
Viewed by 625
Abstract
In this work, the nonlinear optical (NLO) properties of CuO nanoparticles (CuO NPs) were studied experimentally using the pulsed laser ablation (PLA) technique. A nanosecond Nd: YAG laser was employed as the ablation excitation source to create CuO NPs in distilled water. Various [...] Read more.
In this work, the nonlinear optical (NLO) properties of CuO nanoparticles (CuO NPs) were studied experimentally using the pulsed laser ablation (PLA) technique. A nanosecond Nd: YAG laser was employed as the ablation excitation source to create CuO NPs in distilled water. Various CuO NPs samples were prepared at ablation periods of 20, 30, and 40 min. Utilizing HR-TEM, the structure of the synthesized CuO NPs samples was verified. In addition, a UV–VIS spectrophotometer was used to investigate the linear features of the samples. The Z-scan technique was utilized to explore the NLO properties of CuO NPs samples, including the nonlinear absorption coefficient (β) and nonlinear refractive index (n2). An experimental study on the NLO features was conducted at a variety of excitation wavelengths (750–850 nm), average excitation powers (0.8–1.2 W), and CuO NPs sample concentrations and sizes. The reverse saturable absorption (RSA) behavior of all CuO NPs samples differed with the excitation wavelength and average excitation power. In addition, the CuO NPs samples demonstrated excellent optical limiters at various excitation wavelengths, with limitations dependent on the size and concentration of CuO NPs. Full article
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29 pages, 19012 KiB  
Article
Rheology of Suspensions Thickened by Cellulose Nanocrystals
by Rajinder Pal and Karthika Pattath
Nanomaterials 2024, 14(13), 1122; https://doi.org/10.3390/nano14131122 - 29 Jun 2024
Viewed by 1155
Abstract
The steady rheological behavior of suspensions of solid particles thickened by cellulose nanocrystals is investigated. Two different types and sizes of particles are used in the preparation of suspensions, namely, TG hollow spheres of 69 µm in Sauter mean diameter and solospheres S-32 [...] Read more.
The steady rheological behavior of suspensions of solid particles thickened by cellulose nanocrystals is investigated. Two different types and sizes of particles are used in the preparation of suspensions, namely, TG hollow spheres of 69 µm in Sauter mean diameter and solospheres S-32 of 14 µm in Sauter mean diameter. The nanocrystal concentration varies from 0 to 3.5 wt% and the particle concentration varies from 0 to 57.2 vol%. The influence of salt (NaCl) concentration and pH on the rheology of suspensions is also investigated. The suspensions generally exhibit shear-thinning behavior. The degree of shear-thinning is stronger in suspensions of smaller size particles. The experimental viscosity data are adequately described by a power-law model. The variations in power-law parameters (consistency index and flow behavior index) under different conditions are determined and discussed in detail. Full article
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Rescaling flow curves of protein-stabilized emulsions
Authors: Santiago F. Velandia; Philippe Marchal; Véronique Sadtler; Cécile Lemaitre; Daniel Bonn; Thibault Roques-Carmes*
Affiliation: 1) Laboratoire Réactions et Génie des Procédés, UMR 7274 CNRS, Université de Lorraine, 1 rue Grandville, Nancy, 54001,France, 2)Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam, Science Park 904, Amsterdam, 1098 XH, The Netherlandsa

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