Review
Biochemical Research Methods
Xiangchun Xuan
Summary: Insulator-based dielectrophoresis (iDEP) is increasingly used for particle manipulation in microfluidic applications. However, the presence of insulators can cause two nonlinear electrokinetic flows, induced charge electroosmotic (ICEO) flow and electrothermal flow, which vary nonlinearly with the applied electric field. These flows have both been utilized to promote certain applications and may affect the linear electrokinetic motion of particles.
Article
Chemistry, Physical
Tae Gwang Yun, Jaehyeong Bae, Hyeon Gyun Nam, Dongyeon Kim, Ki Ro Yoon, Seung Min Han, Il-Doo Kim
Summary: The PEDOT:PSS-based transpiration-driven electrokinetic power generator (p-TEPG) demonstrates higher energy density and enhanced volumetric and areal energy/power densities compared to carbon-based TEPG. The p-TEPG utilizes cations to establish additional potential difference in the polymer matrix, maximizing energy generation efficiencies. Seawater produced on a single p-TEPG device is sufficient to charge electrical energy storage systems and operate low-powered electronic devices.
Article
Chemistry, Analytical
Abbi Miller, Nicole Hill, Kel Hakim, Blanca H. Lapizco-Encinas
Summary: The study focused on developing optimized EK sample injection schemes for direct current insulator-based EK systems, utilizing mathematical modeling and experimental methods to investigate sample injection schemes considering nonlinear electrokinetic effects.
Article
Mechanics
D. Zrnic, P. Berglez, G. Brenn
Summary: Theoretical investigation is conducted on the nonlinear axisymmetric shape oscillations of a Newtonian drop in a vacuum, revealing phenomena such as surface deformation, frequency decrease, and quasi-periodicity of motion. Viscosity is found to dampen nonlinear behavior and enhance the coupling of different oscillation modes.
Article
Chemistry, Physical
Zhiyong Xie
Summary: This paper theoretically investigates the electrokinetic energy conversion of core-annular flow in a slippery nanotube. The results show that the conversion efficiency can be significantly enhanced by altering the fluid properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Mechanics
Yongbo Liu, Jingnan Xing, Jiandong Pi
Summary: In recent years, the electrokinetic energy conversion in pressure-driven flow through hydrophobic nanochannels has gained much attention. However, the reported efficiencies may be overestimated due to neglecting the surface charge mobility effect. This paper develops a theoretical model for electrokinetic energy conversion in graphene nanochannels, considering the influence of surface charge mobility.
Article
Chemistry, Multidisciplinary
Chengfa Wang, Qi Gao, Yongxin Song
Summary: This paper investigates the electrokinetic effect at a two-liquid interface within a microchannel and explores the influence of surface zeta-potential and liquid phase height on the interface velocity. The results demonstrate that the direction and velocity of interface movement are determined by the zeta-potentials and height differences between the two liquids and the microchannel. This study has significant importance in understanding and manipulating fluid interface electrokinetic effects.
Article
Mechanics
Zhaodong Ding, Yongjun Jian
Summary: The study explores the electrokinetic transports of viscoelastic fluids in various channel geometries and introduces a universal Deborah number to analyze resonances. It is found that the annular geometry is optimal for achieving maximum energy conversion efficiency compared to cylindrical geometry, with a 20% increase in efficiency.
Review
Biochemical Research Methods
Kel S. Hakim, Blanca H. Lapizco-Encinas
Summary: Nonlinear electrokinetics technologies, such as DEP particle trapping and EROT for particle assessments, have been widely applied in the analysis, sensing, and purification of microorganisms. Recent research has made significant advancements in these technologies, showcasing the potential future developments within the field of microscale EK.
Article
Chemistry, Multidisciplinary
Chenchen Wang, Lin Liu, Jingyu Wang, Yong Yan
Summary: In this study, we found that the circularly polarized photoluminescence (CPL) of self-assembled conducting polyaniline (PANI) helical microfibers can be reversibly switched by applying an alternating electrical bias. The conducting polymer transfers its chirality to the coassembled aggregation-induced emission (AIE) fluorescent molecules, resulting in electrochemically switchable CPL. This is derived from the reversible transformation of the chirality of the polyaniline microfibers, possibly due to the change in the molecular interchain distance upon doping/dedoping. Double-layer information encryption based on the electrochemically reversible CPL and conductance has also been demonstrated.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Li Cheng, Bei Fan, Zichen Zhang, Prabhakar Bandaru
Summary: The study shows that the electrokinetic streaming potential in a microchannel is related to the underlying surface pattern, with different patterns affecting the magnitude of the potential. By increasing the solid fraction of the pattern surface, the effective slip length decreases while enhancing the overall channel zeta potential, ultimately impacting the efficiency of electrical voltage sources.
Article
Biochemical Research Methods
Atakan Atay, Ali Beskok, Barbaros Cetin
Summary: The DC-electrokinetic behavior of colloidal cylinders near a conducting wall is investigated, taking into account the boundary effects and the contribution of different forces. By incorporating the electrokinetic and colloidal forces into a computational model and applying the electrokinetic slip-velocity and thin electrical double layer assumption, the position, velocity, electric field, and flow field of the particles are analyzed.
Article
Biotechnology & Applied Microbiology
Joseph C. C. Walker, Ashley M. M. Jorgensen, Anyesha Sarkar, Stephen P. P. Gent, Mark A. A. Messerli
Summary: Electrical stimulation promotes healing of chronic wounds and delays cartilage degeneration, possibly through electrokinetic perfusion in the extracellular space. Adding anionic polymers can enhance electro-osmotic flow and improve cell survival. This study may offer new insights into the mechanisms of electrical therapies in soft tissues.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Mechanics
B. N. Nwani, C. Merhaben, I. D. Gates, A. M. Benneker
Summary: This study investigates the electrokinetic control of miscible viscous fingering (VF) using an externally applied electric field. Numerical simulations show that VF can be fully suppressed if an electric field with an absolute value above the critical field strength is applied. The direction of the electric field depends on the configuration, and the quantitative analysis supports the qualitative findings. The results have implications for applications such as oil recovery, pollution zone spreading, liquid chromatography, and soil remediation.
Article
Mechanics
Bibaswan Dey, G. P. Raja Sekhar
Summary: This study aims to investigate the role of endothelial-cell glycocalyx layer in the transport of blood-borne solutes and the effects of interface potential and charge density on plasma flow rate and solute transport. Various experimental observations suggest that EGL holds negative charges and interacts with blood plasma. The study utilizes biphasic mixture theory and analytical methods to analyze the interactions between plasma and EGL.
Article
Chemistry, Physical
Ory Schnitzer, Matvey Morozov
JOURNAL OF CHEMICAL PHYSICS
(2015)
Article
Mechanics
Ory Schnitzer, Ehud Yariv
JOURNAL OF FLUID MECHANICS
(2016)
Article
Mechanics
Ory Schnitzer
JOURNAL OF FLUID MECHANICS
(2015)
Article
Mechanics
Ory Schnitzer, Ehud Yariv
JOURNAL OF FLUID MECHANICS
(2015)
Article
Materials Science, Multidisciplinary
Ory Schnitzer
Article
Physics, Fluids & Plasmas
Ory Schnitzer
Article
Mechanics
Ory Schnitzer, Ehud Yariv
Article
Multidisciplinary Sciences
Ory Schnitzer, Vincenzo Giannini, Stefan A. Maier, Richard V. Craster
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2016)
Article
Engineering, Multidisciplinary
Ehud Yariv, Ory Schnitzer
JOURNAL OF ENGINEERING MATHEMATICS
(2018)
Article
Mechanics
Ory Schnitzer, Ehud Yariv
JOURNAL OF FLUID MECHANICS
(2018)
Article
Mechanics
Ory Schnitzer, Itzchak Frankel, Ehud Yariv
JOURNAL OF FLUID MECHANICS
(2014)
Article
Physics, Fluids & Plasmas
Ory Schnitzer, Ehud Yariv
Article
Physics, Fluids & Plasmas
Ory Schnitzer, Ehud Yariv
Article
Mechanics
Ory Schnitzer
JOURNAL OF FLUID MECHANICS
(2017)
Article
Materials Science, Multidisciplinary
Ory Schnitzer, Vincenzo Giannini, Richard V. Craster, Stefan A. Maier