Results 21 to 30 of about 44,167 (291)

Characterization of Silver Nanoparticles under Environmentally Relevant Conditions Using Asymmetrical Flow Field-Flow Fractionation (AF4). [PDF]

open access: yesPLoS ONE, 2015
The development of methods to monitor manufactured nanomaterials in the environment is one of the crucial areas for the assessment of their risk. More specifically, particle size analysis is a key element, because many properties of nanomaterial are size
Min-Hee Jang, Seungho Lee, Yu Sik Hwang
doaj   +1 more source

Increasing the resolution of field flow fractionation with increasing crossflow gradients

open access: yes, 2023
The resolution of flow field flow fractionation (flow FFF) depends primarily on the crossflow rate and its change over time. In this work we demonstrate a method for modulation of the crossflow rate during separation increases the peak-to-peak resolution
George, Bou-Assaf, Nicholas, Larson
core   +1 more source

Nanoparticle separation with a miniaturized asymmetrical flow field-flow fractionation cartridge

open access: yesFrontiers in Chemistry, 2015
Asymmetrical Flow Field-Flow Fractionation (AF4) is a separation technique applicable to particles over a wide size range. Despite the many advantages of AF4, its adoption in routine particle analysis is somewhat limited by the large footprint of ...
David eMüller   +5 more
doaj   +1 more source

Gravitational Field-Flow Fractionation Devices Fabricated via a Hot Embossing/Thermal Bonding Method

open access: yesMicromachines, 2014
A novel hot embossing/low temperature ethanol solvent bonding method for the fabrication of polymethylmethacrylate (PMMA) field flow fractionation devices has been developed.
Kaijun Yang
doaj   +1 more source

Aqueous Dilution of Noble NPs Bulk Dispersions: Modeling Instability due to Dissolution by AF4 and Stablishing Considerations for Plasmonic Assays

open access: yesNanomaterials, 2020
Among different nanomaterials, gold and silver nanoparticles (AuNPs and AgNPs) have become useful tools for a wide variety of applications in general, and particularly for plasmonic assays.
Lorenzo Sanjuan-Navarro   +3 more
doaj   +1 more source

Fractionation of Nanoparticle Matter in Red Wines Using Asymmetrical Flow Field-Flow Fractionation. [PDF]

open access: yesJ Agric Food Chem, 2020
The particle matter of wine is mainly composed of wine colloids and macromolecules. The present work develops a methodology using asymmetrical flow field-flow fractionation coupled with multi-angle light scattering, differential refractive index detector,
Osorio-Macías DE   +8 more
europepmc   +2 more sources

Experimental setup for the ultrasonic fractionation of flowing whole blood in a capillary

open access: yesCurrent Directions in Biomedical Engineering, 2022
If a long ultrasound driving pulse is chosen such, that its frequency is greater than the resonance frequency of one cell type and less than the resonance frequency of another cell type, the cells are separated in different nodes and antinodes of the ...
Smalberger Charl   +6 more
doaj   +1 more source

Field-Flow Fractionation Analysis of Complex Biological Samples [PDF]

open access: yesKemija u Industriji, 2014
Normal analytical methods have difficulties when analysing complex samples containing particles of different size. In the 1960s, a new analytical technique was developed, which was able to overcome those difficulties.
Mijić, I.   +3 more
doaj  

Water-dispersible colloids distribution along an alluvial fan transect in hyper-arid Atacama Desert

open access: yesGeoderma, 2023
As located in one of the oldest and driest deserts on Earth, soils in the Atacama Desert are greatly affected by atmospheric dust deposited on soil surface and the related fate of water-dispersible colloids (WDCs,
Xiaolei Sun   +9 more
doaj   +1 more source

Elution time changes due to anomalous DEP effects in microchannels under uniform and non-uniform electric fields

open access: yesSensing and Bio-Sensing Research, 2016
Conventional dielectrophoresis (DEP) force on cell and particle is altered in the proximity of the electrodes due to the failure of the dipole approximation. In these conditions an anomalous DEP (aDEP) force rules the particle manipulation.
Antonino Magliano   +11 more
doaj   +1 more source

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