Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Surface charges play a fundamental role in physics and chemistry, in particular in shaping the catalytic properties of nanomaterials. However, tracking nanoscale surface charge dynamics remains challenging due to the involved length and time scales. Here, we demonstrate time-resolved access to the nanoscale charge dynamics on dielectric nanoparticles using reaction nanoscopy. We present a four-dimensional visualization of the spatiotemporal evolution of the charge density on individual SiO nanoparticles under strong-field irradiation with femtosecond-nanometer resolution. The initially localized surface charges exhibit a biexponential redistribution over time. Our findings reveal the influence of surface charges on surface molecular bonding through quantum dynamical simulations. We performed semi-classical simulations to uncover the roles of diffusion and charge loss in the surface charge redistribution process. Understanding nanoscale surface charge dynamics and its influence on chemical bonding on a single-nanoparticle level unlocks an increased ability to address global needs in renewable energy and advanced health care.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11305382 | PMC |
| http://dx.doi.org/10.1126/sciadv.adp1890 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Development of Receptor-Binding Domain (RBD)-Loaded PEG-PCL Nanoparticle Formulations Against SARS-CoV-2.
Macromol Biosci
September 2025
Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Tandogan, Ankara, Turkey.
The COVID-19 pandemic caused by the novel coronavirus SARS-CoV-2 has highlighted the critical need for safe and effective vaccines. In this study, subunit nanovaccine formulations were developed using the receptor-binding domain (RBD) of the SARS-CoV-2 spike (S) protein encapsulated in polymeric nanoparticles composed of poly(ethylene glycol)-block-poly(ε-caprolactone) (PEG-PCL). Two surfactants, poly(vinyl alcohol) (PVA) and sodium cholate (SC), were evaluated during formulation via a modified water-in-oil-in-water (w/o/w) emulsion-solvent evaporation method.
View Article and Find Full Text PDFUnveiling Ion-Transport Dynamics in 2D Nanofluidic Anion-Selective Membranes toward Osmotic Energy Harvesting.
Nano Lett
September 2025
State Key Laboratory of Materials Low-Carbon Recycling, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, P. R. China.
Two-dimensional (2D) nanofluidic architectures with nanoconfined interlayer channels and excess surface charges have revolutionized membrane-based reverse electrodialysis systems, demonstrating highly efficient osmotic energy collection through strong electrostatic screening of electric double layer (EDL). However, the ion-transport dynamics in 2D nanofluidic anion-selective membranes (2D-NAMs) still remain unexplored. Here, we combine density functional theory and molecular dynamics (MD) simulations to systematically explore ion transport in the 2D-NAMs.
View Article and Find Full Text PDFA Highly Effective Biomimetic Method for Simultaneously Enhancing the Stability and Functionality of Merocyanine Photoacids.
J Phys Chem B
September 2025
Department of Chemistry and Chemical Engineering, Florida Institute of Technology, Melbourne, Florida 32901, United States.
Merocyanine photoacids (MCHs) have found applications in chemical, material, energy, and biomedical areas, and are currently being investigated for industrial applications. Hydrolysis, relatively high dark acidity, and moderate solubility in water are the major concerns for their practical applications. Inspired by the structure of the cell membrane, we incorporated the most commonly used MCH into sodium dodecyl sulfate (SDS) micelles.
View Article and Find Full Text PDFDual-Functional One-Pot Synthesized Au-Y-TMA MOF Hybrid: an Electrode Modifier for High-Performance Symmetric Supercapacitor and Kanamycin Aptasensor for Spiked Milk Samples.
Anal Chem
September 2025
RUSA-Center for Advanced Sensor Technology, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar (Aurangabad), Maharashtra 431 004, India.
In this study, a one-pot hydrothermal synthesis method was used to synthesize a novel gold-yttrium trimesic acid metal-organic framework (Au-Y-TMA MOF), demonstrating significant improvements over conventional single-metal MOFs, that is, yttrium trimesic acid (Y-TMA), in both supercapacitor applications and electrochemical antibiotic detection. The X-ray diffraction patterns of Au-Y-TMA confirmed the presence and impact of Au in the Y-TMA matrix, while field emission scanning electron microscopy (FE-SEM) images revealed a heterogeneous combination of gold nanoparticles (AuNPs) and Y-TMA, suggesting a nonuniform distribution and possible interaction. The developed half-cell supercapacitor exhibited a remarkable capacitance value of 1836 F/g at a current density of 5 A/g by galvanostatic charging-discharging (GCD) measurement.
View Article and Find Full Text PDFFermentation-induced modifications to the structural, surface, and functional properties of quinoa proteins.
Food Sci Biotechnol
October 2025
Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, 11433 Riyadh, Saudi Arabia.
This research study investigates the relationship between the structural characteristics, water solubility, and protein digestibility of quinoa proteins (QPs) during fermentation. The fermentation process induces structural modifications in QPs, thereby enhancing their surface properties and functional attributes. Using advanced analytical techniques, such as ultraviolet, fluorescence, and FT-IR spectra, it has been demonstrated that fermented QPs exhibit significant structural changes (P < 0.
View Article and Find Full Text PDF