Continuous-flow trapping and localized enrichment of micro- and nano-particles using induced-charge electrokinetics

Soft Matter ◽  
2018 ◽  
Vol 14 (6) ◽  
pp. 1056-1066 ◽  
Author(s):  
Cunlu Zhao ◽  
Chun Yang
Keyword(s):  
Continuous Flow ◽  
Nano Particles ◽  
Induced Charge ◽  
Microfluidic Technique

In this work, we report an effective microfluidic technique for continuous-flow trapping and localized enrichment of micro- and nano-particles by using induced-charge electrokinetic (ICEK) phenomena.

Design of a microfluidic device for the measurement of the elastic modulus of deformable particles

Soft Matter ◽  
2019 ◽  
Vol 15 (5) ◽  
pp. 880-889 ◽  
Author(s):  
Massimiliano M. Villone ◽  
Janine K. Nunes ◽  
Yankai Li ◽  
Howard A. Stone ◽  
Pier Luca Maffettone
Keyword(s):  
Elastic Modulus ◽  
Interfacial Tension ◽  
Continuous Flow ◽  
Liquid Droplet ◽  
Flow Process ◽  
Deformable Particles ◽  
Soft Particles ◽  
Continuous Flow Process ◽  
Microfluidic Technique

A microfluidic technique recently proposed in the literature to measure the interfacial tension between a liquid droplet and an immiscible suspending liquid [Hudson et al., Appl. Phys. Lett., 2005, 87, 081905], [Cabral and Hudson, Lab Chip, 2006, 6, 427] is suitably adapted to the characterization of the elastic modulus of soft particles in a continuous-flow process.

Continuous flow nano-technology: manipulating the size, shape, agglomeration, defects and phases of silver nano-particles

Lab on a Chip ◽  
2007 ◽  
Vol 7 (12) ◽  
pp. 1800 ◽  
Author(s):  
K. Swaminathan Iyer ◽  
Colin L. Raston ◽  
Martin Saunders
Keyword(s):  
Continuous Flow ◽  
Nano Particles ◽  
Nano Technology

Continuous-flow focusing of microparticles using induced-charge electroosmosis in a microfluidic device with 3D AgPDMS electrodes

RSC Advances ◽  
2015 ◽  
Vol 5 (82) ◽  
pp. 66602-66610 ◽  
Author(s):  
Yankai Jia ◽  
Yukun Ren ◽  
Hongyuan Jiang
Keyword(s):  
Microfluidic Device ◽  
Continuous Flow ◽  
Alternating Current ◽  
Flow Focusing ◽  
Negative Effects ◽  
Induced Charge

Efficient continuous-flow focusing of microparticles using induced-charge electroosmosis is presented and 3D AgPDMS electrodes are employed to avoid the negative effects of alternating current electroosmosis and dielectrophoresis.

Scaled particle focusing in a microfluidic device with asymmetric electrodes utilizing induced-charge electroosmosis

Lab on a Chip ◽  
2016 ◽  
Vol 16 (15) ◽  
pp. 2803-2812 ◽  
Author(s):  
Yukun Ren ◽  
Jiangwei Liu ◽  
Weiyu Liu ◽  
Qi Lang ◽  
Ye Tao ◽  
...  
Keyword(s):  
Microfluidic Device ◽  
Continuous Flow ◽  
Particle Number ◽  
Particle Focusing ◽  
Number Ratio ◽  
Induced Charge ◽  
Asymmetric Electrodes

We propose a novel continuous-flow microfluidic particle concentrator with a specified focusing-particle number ratio (FR) at different channel outlets using induced-charge electroosmosis (ICEO).

Preparations of nano-particles, nano-composites and fibers of ZnO from an amide precursor: Photocatalytic decomposition of (CH3)2S2 in a continuous flow reactor

2006 ◽  
Vol 41 (12) ◽  
pp. 2210-2218 ◽  
Author(s):  
Stéphane Daniele ◽  
Mohamed N. Ghazzal ◽  
Liliane G. Hubert-Pfalzgraf ◽  
Christian Duchamp ◽  
Chantal Guillard ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Flow Reactor ◽  
Nano Particles ◽  
Photocatalytic Decomposition ◽  
Nano Composites ◽  
Continuous Flow Reactor

Continuous Flow Microfluidic Demixing of Electrolytes by Induced Charge Electrokinetics in Structured Electrode Arrays

2006 ◽  
Vol 78 (5) ◽  
pp. 1425-1434 ◽  
Author(s):  
Felix C. Leinweber ◽  
Jan C. T. Eijkel ◽  
Johan G. Bomer ◽  
Albert van den Berg
Keyword(s):  
Continuous Flow ◽  
Electrode Arrays ◽  
Induced Charge

scholarly journals Induced charge electro-osmotic particle separation

Nanoscale ◽  
2019 ◽  
Vol 11 (13) ◽  
pp. 6410-6421 ◽  
Author(s):  
Xiaoming Chen ◽  
Yukun Ren ◽  
Likai Hou ◽  
Xiangsong Feng ◽  
Tianyi Jiang ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Particle Separation ◽  
Separation Method ◽  
Induced Charge

We present a direct particle separation method based on induced charge electro-osmotic vortices in continuous flow.

Electron holography of catalysts

1995 ◽  
Vol 53 ◽  
pp. 416-417
Author(s):  
A. K. Datye ◽  
D. S. Kalakkad ◽  
L. F. Allard ◽  
E. Völkl
Keyword(s):  
Heterogeneous Catalysts ◽  
High Surface ◽  
High Surface Area ◽  
Atomic Scale ◽  
Nano Particles ◽  
Phase Image ◽  
Electron Holography ◽  
Specimen Thickness ◽  
Phase Information ◽  
Particle Structure

The active phase in heterogeneous catalysts consists of nanometer-sized metal or oxide particles dispersed within the tortuous pore structure of a high surface area matrix. Such catalysts are extensively used for controlling emissions from automobile exhausts or in industrial processes such as the refining of crude oil to produce gasoline. The morphology of these nano-particles is of great interest to catalytic chemists since it affects the activity and selectivity for a class of reactions known as structure-sensitive reactions. In this paper, we describe some of the challenges in the study of heterogeneous catalysts, and provide examples of how electron holography can help in extracting details of particle structure and morphology on an atomic scale.Conventional high-resolution TEM imaging methods permit the image intensity to be recorded, but the phase information in the complex image wave is lost. However, it is the phase information which is sensitive at the atomic scale to changes in specimen thickness and composition, and thus analysis of the phase image can yield important information on morphological details at the nanometer level.

Coherent electron nanodiffraction from clean silver nano particles in a UHV STEM

1993 ◽  
Vol 51 ◽  
pp. 1058-1059
Author(s):  
J. Liu ◽  
M. Pan ◽  
G. E. Spinnler
Keyword(s):  
Supported Catalysts ◽  
Imaging Techniques ◽  
Nano Particles ◽  
Metal Particles ◽  
Shape Structure ◽  
Dynamical Simulations ◽  
Small Metal Particles ◽  
Extract Information

Small metal particles have peculiar chemical and physical properties as compared to bulk materials. They are especially important in catalysis since metal particles are common constituents of supported catalysts. The structural characterization of small particles is of primary importance for the understanding of structure-catalytic activity relationships. The shape and size of metal particles larger than approximately 5 nm in diameter can be determined by several imaging techniques. It is difficult, however, to deduce the shape of smaller metal particles. Coherent electron nanodiffraction (CEND) patterns from nano particles contain information about the particle size, shape, structure and defects etc. As part of an on-going program of STEM characterization of supported catalysts we report some preliminary results of CEND study of Ag nano particles, deposited in situ in a UHV STEM instrument, and compare the experimental results with full dynamical simulations in order to extract information about the shape of Ag nano particles.

Sign in / Sign up

Export Citation Format

Share Document