AI Article Synopsis

  • Depth resolved X-ray photoelectron spectroscopy (XPS) and a 25 μm liquid jet were used to study the distribution of 3 nm SnO2 nanoparticles in a liquid suspension.
  • The findings indicate there is a distinct layer at the air-water interface that is free of these nanoparticles, extending several nanometers thick.
  • This technique helps quantify how nanoparticles migrate from the air-water interface into the bulk of the suspension.

Article Abstract

Depth resolved X-ray photoelectron spectroscopy (XPS) combined with a 25 μm liquid jet is used to quantify the spatial distribution of 3 nm SnO2 nanoparticles (NPs) from the air-water interface (AWI) into the suspension bulk. Results are consistent with those of a layer several nm thick at the AWI that is completely devoid of NPs.

Download full-text PDF

Source
http://dx.doi.org/10.1039/c4cc00720dDOI Listing

Publication Analysis

Top Keywords

spatial distribution
8
air-water interface
8
non-uniform spatial
4
distribution tin
4
tin oxide
4
oxide sno₂
4
sno₂ nanoparticles
4
nanoparticles air-water
4
interface depth
4
depth resolved
4

Similar Publications

Accurate operando measurement of AlGaN/GaN HEMTs channel temperature and optimization of thermal design.

Nanotechnology

January 2025

Electronic Sci.&Eng., Xi'an Jiaotong University, 28 Xianning West Road,Beilin District, Xi 'an, Shaanxi Province, China, Xi'an, 710049, CHINA.

The accurate estimation of the temperature distribution of the GaN based power devices and optimization of the device structure is of great significance to possibly solve the self-heating problem, which hinders the further enhancement of the device performances. We present here the operando temperature measurement with high spatial resolution using Raman spectroscopy of AlGaN/GaN high electron mobility transistors (HEMTs) with different device structures and explore the optimization of the device thermal design accordingly. The lateral and depth temperature distributions of the single-finger HEMT were characterized.

View Article and Find Full Text PDF

COVID-19 mortality among international migrants in Brazil: spatio-temporal analysis, 2020-2022.

Epidemiol Serv Saude

January 2025

Universidade do Estado do Rio de Janeiro, Departamento de Epidemiologia, Rio de Janeiro, RJ, Brazil.

Objective: To describe the mortality profile and analyze the spatiotemporal distribution of COVID-19 mortality among international migrants residing in Brazil from 2020 to 2022.

Methods: This is a descriptive and ecological cross-sectional study using secondary data. Absolute and relative frequencies of the sociodemographic profile and mortality coefficients (MCs) were analyzed.

View Article and Find Full Text PDF

Spherical harmonics texture extraction for versatile analysis of biological objects.

PLoS Comput Biol

January 2025

European Molecular Biology Laboratory, Cell Biology and Biophysics Unit, Heidelberg, Germany.

The characterization of phenotypes in cells or organisms from microscopy data largely depends on differences in the spatial distribution of image intensity. Multiple methods exist for quantifying the intensity distribution - or image texture - across objects in natural images. However, many of these texture extraction methods do not directly adapt to 3D microscopy data.

View Article and Find Full Text PDF

The proliferation of cyanobacteria has become a significant water management challenge due to the increasing eutrophication of water supply reservoirs. Cyanobacterial blooms thrive on elevated nutrient concentrations and form extensive green mats, disrupting the local ecosystem. Furthermore, many cyanobacterial species can produce toxins that are lethal to vertebrates called cyanotoxins.

View Article and Find Full Text PDF

We consider many-particle diffusion in one spatial dimension modeled as "random walks in a random environment." A shared short-range space-time random environment determines the jump distributions that drive the motion of the particles. We determine universal power laws for the environment's contribution to the variance of the extreme first passage time and extreme location.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!