A technique utilizing the capillary assisted sieving capability of carbon nanotubes (CNTs) to achieve fractionation of nanoparticles of small size distribution is presented. By dipping aligned CNT arrays into a solution comprising different sized quantum dots (QDs), size-selective gradient decoration of QDs onto CNTs is achieved. The fractionating capability of CNTs is also demonstrated for poly-dispersed manganese doped zinc sulfide nanoparticles and QDs of varying sizes and chemical compositions, which we attribute to the size-selective sieving effect of CNTs. By controlling the terminating point for the flow of QDs across the CNT array, a QD size specific CNT/QD hybrid structure is achieved.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/0957-4484/21/29/295702 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
PDMS-in-water emulsions stabilized by cellulose/chitin/starch nanoparticles for fabrication of oil adsorbents: A comparison study.
Carbohydr Polym
March 2025
MOE Key Laboratory of Groundwater Quality and Health, School of Environmental Studies, China University of Geosciences, Wuhan 430078, China; Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan 430078, China. Electronic address:
Pickering emulsion template has aroused attention in the fabrication of porous composite materials. In this work, six nanoparticles including cellulose nanofiber/nanocrystal (CNF/CNC), chitin nanofiber/nanocrystals (ChNF/ChNC) and waxy/normal corn nanocrystal (WSNC/CSNC) were comparatively studied for their performance in fabricating porous composites with PDMS via Pickering emulsion templates. Among all, CNF and ChNF exhibited best emulsion stabilizing ability, while ChNF and ChNC at optimized concentrations enabled the formation of high internal phase emulsions with long-term stability of over 300 days.
View Article and Find Full Text PDFCoupling of Li-Fe: Li Isotope Fractionation during Sorption onto Fe-Oxides.
ACS Earth Space Chem
January 2025
Department of Earth Sciences, Utrecht University, 3584 CB Utrecht, The Netherlands.
Chemical weathering processes play a key role in regulating the global climate over geological time scales. Lithium (Li) isotope compositions have proven to be a robust proxy for tracing weathering processes that produce secondary minerals, such as clays and oxides, with a focus often placed on Li adsorption to, or incorporation into, clay minerals. In addition, the interaction between Li and Fe-oxides has long been assumed and discussed based on field observations, but experimental constraints on this process are lacking.
View Article and Find Full Text PDFLignin Molar Mass Estimation by Dispersion Analysis.
Macromol Rapid Commun
January 2025
Department of Geosciences and Natural Resource Management, University of Copenhagen, Frederiksberg C, Copenhagen, 1958, Denmark.
Lignin's complex and heterogeneous molecular structure poses significant challenges for accurate molar mass determination, which is important for its utilization in industrial applications, such as biochemicals, nanoparticles, biobased binders, and biofuels. This study evaluates the potential of Taylor Dispersion Analysis (TDA) for measuring lignin size and compares it with size-exclusion chromatography (SEC) and diffusion-ordered spectroscopy (DOSY) NMR. Using dual Gaussian fitting, flow-induced dispersion analysis (FIDA), a TDA-based method, successfully determined the average hydrodynamic radii of multiple species in solvent-fractionated soda grass lignin samples, producing results consistent with DOSY.
View Article and Find Full Text PDFPredicting nanofluid behavior in inflamed stenotic arteries: a neural network and finite element-Based analysis.
Comput Methods Biomech Biomed Engin
January 2025
Department of Clinical Surgery, Cty Clin Emergency Hosp, Sibiu, Romania.
This study examines heat transfer and nanofluid-enhanced blood flow behaviour in stenotic arteries under inflammatory conditions, addressing critical challenges in cardiovascular health. The blood, treated as a Newtonian fluid, is augmented with gold nanoparticles to improve thermal conductivity and support drug delivery applications. A hybrid methodology combining finite element method (FEM) for numerical modelling and artificial neural networks (ANN) for stability prediction provides a robust analytical framework.
View Article and Find Full Text PDFPerformance analysis of a wavy fin-and-tube automobile radiator operating on ethylene glycol and water based ternary nanofluids.
Heliyon
January 2025
Operational Research Center in Healthcare, Near East University, TRNC Mersin 10, Nicosia, 99138, Turkey.
Efficient thermal management is crucial for optimizing the performance and longevity of automotive engines, particularly as environmental regulations become more stringent and consumer demand for fuel efficiency increases. This paper investigates the energy and exergy performance of a wavy fin-and-tube radiator employing novel ternary nanofluids (TNFs) for enhanced automotive cooling. A theoretical comparative analysis was performed on four distinct ethylene glycol-water solution-based TNF configurations.
View Article and Find Full Text PDFWant 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!