Membrane fouling mitigation by coupling applied electric field in membrane system: Configuration, mechanism and performance

2018 ◽  
Vol 287 ◽  
pp. 124-134 ◽  
Author(s):  
Chunyu Li ◽  
Xiaoyan Guo ◽  
Xin Wang ◽  
Shougang Fan ◽  
Qixing Zhou ◽  
...  
Keyword(s):  
Electric Field ◽  
Membrane Fouling ◽  
Applied Electric Field ◽  
Membrane System ◽  
System Configuration ◽  
Fouling Mitigation ◽  
And Performance

Fabrication and Electro-Optical Characterization of a Nanocellulose-Based Spatial Light Modulator

MRS Advances ◽  
2015 ◽  
Vol 1 (10) ◽  
pp. 631-637 ◽  
Author(s):  
Hassane Oulachgar ◽  
Martin Bolduc ◽  
Gregory Chauve ◽  
Yan Desroches ◽  
Patrick Beaupre ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electric Field ◽  
Kerr Effect ◽  
Applied Electric Field ◽  
Spatial Light Modulator ◽  
Optical Characterization ◽  
Light Modulator ◽  
Renewable Material ◽  
And Performance

ABSTRACTNanocrystalline cellulose (NCC) is an emerging renewable nanomaterial that is promising for many diverse applications. As a renewable material, NCC and its derivatives have been widely studied, focusing on their biological, chemical, as well as mechanical properties. The electro-optical properties of NCC, however, remain relatively under explored. Birefringence is one of the important properties that make the NCC very attractive for photonic applications. The rode-like NCC fibers dispersed in certain solutions exhibit a specific preferred orientation which depends on their electrical charge, physical dimensions and the type of solutions used to disperse NCC fibers. In a recent study of Kerr-effect in functionalized NCC solutions, we demonstrated that it is possible to control the orientation of NCC fibers under an applied electric field. NCC-based spatial light modulator devices were fabricated and characterized. Results showed that the transmittance of the device can be controlled through frequency modulation of the applied electric field. In this paper we present the fabrication and electro-optical characterization of the device and discuss the relevant properties of NCC and future approaches to optimize and improve their characteristics and performance.

Nanocarbon-based membrane filtration integrated with electric field driving for effective membrane fouling mitigation

2016 ◽  
Vol 88 ◽  
pp. 285-292 ◽  
Author(s):  
Xinfei Fan ◽  
Huimin Zhao ◽  
Xie Quan ◽  
Yanming Liu ◽  
Shuo Chen
Keyword(s):  
Electric Field ◽  
Membrane Fouling ◽  
Membrane Filtration ◽  
Fouling Mitigation

Electrothermal based active control of ion transport in a microfluidic device with an ion-permselective membrane

Nanoscale ◽  
2018 ◽  
Vol 10 (24) ◽  
pp. 11633-11641 ◽  
Author(s):  
Sinwook Park ◽  
Gilad Yossifon
Keyword(s):  
Electric Field ◽  
Ion Transport ◽  
Active Control ◽  
Microfluidic Device ◽  
Applied Electric Field ◽  
Membrane System ◽  
Temperature Gradients ◽  
Depletion Layer ◽  
Permselective Membrane ◽  
Electrothermal Flow

The ionic depletion layer within a microchannel-permselective membrane system can be dynamically controlled by inducing electrothermal flow driven by the interaction of temperature gradients with the applied electric field.

LIQUID CRYSTLASLIGHT SCATTERING BY FLUCTUATIONS INDUCED BY AN APPLIED ELECTRIC FIELD IN A NEMATIC LIQUID CRYSTAL (APAPA)

1972 ◽  
Vol 33 (C1) ◽  
pp. C1-63-C1-67 ◽  
Author(s):  
M. BERTOLOTTI ◽  
B. DAINO ◽  
P. Di PORTO ◽  
F. SCUDIERI ◽  
D. SETTE
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Nematic Liquid Crystal ◽  
Applied Electric Field

Improved technique for measuring mechanical deformations induced by an applied electric field to an organic insulator

2012 ◽  
Vol 15 (2-3) ◽  
pp. 127-139
Author(s):  
Tung Tran Anh ◽  
Laurent Berquez ◽  
Laurent Boudou ◽  
Juan Martinez-Vega ◽  
Alain Lacarnoy
Keyword(s):  
Electric Field ◽  
Applied Electric Field ◽  
Mechanical Deformations ◽  
Improved Technique

Solution for a Semi-Permeable Interface Crack in Elastic Dielectric/Piezoelectric Bimaterials

2008 ◽  
Vol 75 (1) ◽  
Author(s):  
Q. Li ◽  
Y. H. Chen
Keyword(s):  
Electric Field ◽  
Mechanical Loading ◽  
Interface Crack ◽  
Applied Electric Field ◽  
Crack Tip ◽  
Crack Model ◽  
Permeable Crack ◽  
Impermeable Crack ◽  
Silicon Oil ◽  
Elastic Dielectric

A semi-permeable interface crack in infinite elastic dielectric/piezoelectric bimaterials under combined electric and mechanical loading is studied by using the Stroh complex variable theory. Attention is focused on the influence induced from the permittivity of the medium inside the crack gap on the near-tip singularity and on the energy release rate (ERR). Thirty five kinds of such bimaterials are considered, which are constructed by five kinds of elastic dielectrics and seven kinds of piezoelectrics, respectively. Numerical results for the interface crack tip singularities are calculated. We demonstrate that, whatever the dielectric phase is much softer or much harder than the piezoelectric phase, the structure of the singular field near the semi-permeable interface crack tip in such bimaterials always consists of the singularity r−1∕2 and a pair of oscillatory singularities r−1∕2±iε. Calculated values of the oscillatory index ε for the 35 kinds of bimaterials are presented in tables, which are always within the range between 0.046 and 0.088. Energy analyses for five kinds of such bimaterials constructed by PZT-4 and the five kinds of elastic dielectrics are studied in more detail under four different cases: (i) the crack is electrically conducting, (ii) the crack gap is filled with air/vacuum, (iii) the crack gap is filled with silicon oil, and (iv) the crack is electrically impermeable. Detailed comparisons on the variable tendencies of the crack tip ERR against the applied electric field are given under some practical electromechanical loading levels. We conclude that the different values of the permittivity have no influence on the crack tip singularity but have significant influences on the crack tip ERR. We also conclude that the previous investigations under the impermeable crack model are incorrect since the results of the ERR for the impermeable crack show significant discrepancies from those for the semi-permeable crack, whereas the previous investigations under the conducting crack model may be accepted in a tolerant way since the results of the ERR show very small discrepancies from those for the semi-permeable crack, especially when the crack gap is filled with silicon oil. In all cases under consideration the curves of the ERR for silicon oil are more likely tending to those for the conducting crack rather than to those for air or vacuum. Finally, we conclude that the variable tendencies of the ERR against the applied electric field have an interesting load-dependent feature when the applied mechanical loading increases. This feature is due to the nonlinear relation between the normal electric displacement component and the applied electromechanical loadings from a quadratic equation.

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