Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Nanocomposite systems and nanoparticle (NP) films are crucial for many applications and research fields. The structure-properties correlation raises complex questions due to the collective structure of these systems, often granular and porous, a crucial factor impacting their effectiveness and performance. In this framework, we investigate the optical and morphological properties of Ag nanoparticles (NPs) films and of Ag NPs/TiO₂ porous matrix films, one-step grown by supersonic cluster beam deposition. Morphology and structure of the Ag NPs film and of the Ag/TiO₂ (Ag/Ti 50-50) nanocomposite are related to the optical properties of the film employing spectroscopic ellipsometry (SE). We employ a simple Bruggeman effective medium approximation model, corrected by finite size effects of the nano-objects in the film structure to gather information on the structure and morphology of the nanocomposites, in particular porosity and average NPs size for the Ag/TiO₂ NP film. Our results suggest that SE is a simple, quick and effective method to measure porosity of nanoscale films and systems, where standard methods for measuring pore sizes might not be applicable.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5746932 | PMC |
| http://dx.doi.org/10.3390/nano7120442 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Visible-light photocatalytic degradation of metronidazole using an S-scheme amino acid glycine-modified TiO/FeO heterojunction immobilized on chitosan-Polyacrylonitrile in a batch Photoreactor.
Int J Biol Macromol
September 2025
Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran.
The persistent presence of Metronidazole (MTZ), a commonly used antibiotic, in water bodies is a serious environmental and health concern because of its genotoxic and carcinogenic potential. Here, we report an effective visible-light photocatalyst system comprising an S-scheme glycine-modified TiO/FeO heterojunction immobilized on chitosan-polyacrylonitrile nanofibers. The photocatalyst nanocomposite was synthesized through a sol-gel and ultrasonication process coupled with electrospinning-assisted immobilization.
View Article and Find Full Text PDFTracking phase transitions of tactoids in sulfated cellulose nanocrystals using second harmonic generation microscopy.
Carbohydr Polym
November 2025
Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Campus Kulak Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium. Electronic address:
Cellulose nanocrystals (CNCs) have emerged as promising candidates for chiroptical functional materials due to their ability to form cholesteric liquid crystals with tunable periodicity. The quality of the final cholesteric phase is influenced by the nucleation, growth and coalescence mechanism of the initial droplets, known as tactoids. Current research focuses on understanding the size and morphological transformations of these tactoids, to gain deeper insights into their dynamic behavior and, in turn, to better control the final properties of novel photonic materials.
View Article and Find Full Text PDFA novel protein encoded by hsa_circ_0068626 contributes to age-related cataract via the p62/Keap1/Nrf2 signaling pathway-mediated ferroptosis.
Exp Eye Res
September 2025
Department of Ophthalmology, The Second Affiliated Hospital of Nantong University and First People's Hospital of Nantong City, Nantong, Jiangsu, China; Department of Ophthalmology, Southeast University Affiliated Nantong First People's Hospital, Nantong, Jiangsu, China. Electronic address: wangboai2
This study investigates whether circular RNAs (circRNAs) modulate ferroptosis in lens epithelial cells (LECs) during age-related cataract (ARC) pathogenesis via novel encoded proteins. Initial circRNA-sequencing identified hsa_circ_0068626 (circTFRC) as significantly upregulated in ARC, predominantly localized to the cytoplasm through nuclear-cytoplasmic fractionation and fluorescence in situ hybridization (FISH). Functional assays revealed that circTFRC depletion impaired LECs proliferation and viability, while overexpression exacerbated ferroptosis, evidenced by elevated intracellular reactive oxygen species (ROS) and Fe level via fluorescence probes and flow cytometry.
View Article and Find Full Text PDFBilateral multiple retinal pigment epithelial detachments.
Doc Ophthalmol
September 2025
Department of Ophthalmology, Saitama Medical University Faculty of Medicine, 38 Moro-Hongo Moroyama-machi, Iruma-gun, Saitama, 350-0495, Japan.
Purpose: To report a rare case of bilateral idiopathic multifocal retinal pigment epithelial detachments (imfPEDs) and to describe the long-term morphological and functional changes observed over a 16-year follow-up period.
Methods: A 49-year-old woman was diagnosed with imfPEDs based on multimodal imaging, including optical coherence tomography (OCT), fluorescein angiography (FA), and fundus photography. Full-field electroretinograms (ffERGs) and multifocal ERGs (mfERGs) were recorded to assess retinal function.
Developing an intelligent model to detect the level of diabetic retinopathy using blood vessel pattern extraction in retinal images.
J Med Eng Technol
September 2025
Department of Computer Engineering and Information Technology, Faculty of Electrical and Computer Engineering, Graduate University of Advanced Technology, Kerman, Iran.
Diabetic retinopathy is a chronic and progressive eye disease in which the human retina is affected by an increase in the amount of insulin in the blood. Diabetic retinopathy, if not detected and treated in time, threatens the patient's vision and eventually causes complete blindness. Among various clinical symptoms, microaneurysm appears as the first sign of diabetic retinopathy.
View Article and Find Full Text PDF