Electrorheological Fluid and Its Applications in Microfluidics

Wang, Limu; Gong, Xiuqing; Wen, Weijia

doi:10.1007/128_2011_148

Cited by 25 publications

(14 citation statements)

References 94 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The fast and reversible response of ERFs to the applied electric field makes it possible to classify them as smart materials [2]. ERFs show their performance in vibration control systems, dampers, sensors, microfluidics and robotics [3][4][5][6][7][8]. The mechanism of the electrorheological effect is in the polarization of disperse phase particles by an electric field leading to the sample solidification due to chain-like structure formation between electrodes [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Halloysite nanotubes: Prospects in electrorheology

Kuznetsov¹,

Stolyarova²,

Белоусов³

et al. 2018

Express Polym. Lett.

View full text Add to dashboard Cite

Electrorheological fluids based on polydimethylsiloxane filled with halloysite nanotubes were studied. The filler structure was characterized by TEM, SEM, and X-ray diffraction. When an electric field is applied to suspensions, their rheological behavior changes-the contribution of the elastic component becomes significant and samples behave like a solid body. The effect of the electric field and filler concentration on the electrorheological behavior was investigated. The influence of water content on the filler structure, as well as on electrorheological and electrophysical properties of suspensions, was considered. Electrorheological fluids filled by halloysite with small water content exhibit slightly higher rheological characteristics under an electric field than dried ones. This study shows the prospects of using halloysite nanotubes as a dispersed phase for electrorheological fluids.

show abstract

Section: Introductionmentioning

confidence: 99%

Halloysite nanotubes: Prospects in electrorheology

Kuznetsov¹,

Stolyarova²,

Белоусов³

et al. 2018

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…When subjected to external electric fields, the structure of the particles and the rheological properties of the ER fluids, such as the yield stress, apparent viscosity, storage, and loss moduli, may change drastically [ 36 , 37 ], allowing some ER fluids to change from a liquid to a gel and back, in time scales typically of the order of milliseconds. These characteristics make ER fluids useful in applications in microfluidic devices [ 38 ] and systems like hydraulic valves, clutches [ 39 ], brakes, and dampers [ 40 , 41 ]. In this work, we measure the flow of ER dispersions of modified PS particles in silicone oil, in response to applied electric fields at different strengths.…”

Section: Introductionmentioning

confidence: 99%

Electric Field-Driven Assembly of Sulfonated Polystyrene Microspheres

et al. 2017

View full text Add to dashboard Cite

A designed assembly of particles at liquid interfaces offers many advantages for development of materials, and can be performed by various means. Electric fields provide a flexible method for structuring particles on drops, utilizing electrohydrodynamic circulation flows, and dielectrophoretic and electrophoretic interactions. In addition to the properties of the applied electric field, the manipulation of particles often depends on the intrinsic properties of the particles to be assembled. Here, we present an easy approach for producing polystyrene microparticles with different electrical properties. These particles are used for investigations into electric field-guided particle assembly in the bulk and on surfaces of oil droplets. By sulfonating polystyrene particles, we produce a set of particles with a range of dielectric constants and electrical conductivities, related to the sulfonation reaction time. The paper presents diverse particle behavior driven by electric fields, including particle assembly at different droplet locations, particle chaining, and the formation of ribbon-like structures with anisotropic properties.

show abstract

“…The stiffness modulation of ERF/MRF mainly depends on the transformation of its rheological characteristics under a strong electric field/magnetic field, and its stiffness is proportional to the electric field/magnetic field strength within a certain range, as shown in Figure 9e. A detailed description of the internal conversion mechanism can be found in various studies (ERF [141][142][143] and MRF [144,145] ). ERF/MRF has been demonstrated in some robotic applications, e.g., rehabilitation robotics, [146] robotic joints, [147] and robotic fish, [148] as well as some medical applications, e.g., catheters and prosthesis penile.…”

Section: Stimulus-responsive Soft Materialsmentioning

confidence: 99%

Intelligent Soft Surgical Robots for Next‐Generation Minimally Invasive Surgery

Zhu

Lyu

et al. 2021

Advanced Intelligent Systems

View full text Add to dashboard Cite

Endowed with the expected visions for future surgery, minimally invasive surgery (MIS) has become one of the most rapid developing areas in modern surgery. Soft robotics, which originates from interdisciplinary advances in materials, fabrication, and electronics, featuring better adaptability and safer interaction, holds great promises in addressing current technical challenges in MIS, which are difficult to be solved with current rigid robotic technologies. For the first time, herein, the expected characteristics of next-generation MIS from the surgeons' perspectives are analyzed and the recent progress of soft surgical instruments from three different aspects is comprehensively summarized: engineering design, fabrication techniques, and human-robot interaction. Perspectives of nextgeneration soft surgical robots are then discussed, where some exciting possibilities are emphasized. It is believed that further developments of intelligent soft robotics enable the next-generation MIS to agilely navigate to the target and conduct dexterous diagnostic or therapeutic procedures without any trade-offs in invasiveness and ultimately be a propitious solution for future surgery.

show abstract

Electrorheological Fluid and Its Applications in Microfluidics

Cited by 25 publications

References 94 publications

Halloysite nanotubes: Prospects in electrorheology

Halloysite nanotubes: Prospects in electrorheology

Electric Field-Driven Assembly of Sulfonated Polystyrene Microspheres

Intelligent Soft Surgical Robots for Next‐Generation Minimally Invasive Surgery

Contact Info

Product

Resources

About