Rheology

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Rheology is the study of the flow of matter: primarily in the liquid state, but also as 'soft solids' or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied force. It applies to substances which have a complex molecular structure, such as muds, sludges, suspensions, polymers and other glass formers (e.g. silicates), as well as many foods and additives, bodily fluids (e.g. blood) and other biological materials. (Wikipedia.org)






Conferences related to Rheology

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2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)

The world's premiere conference in MEMS sensors, actuators and integrated micro and nano systems welcomes you to attend this four-day event showcasing major technological, scientific and commercial breakthroughs in mechanical, optical, chemical and biological devices and systems using micro and nanotechnology.The major areas of activity in the development of Transducers solicited and expected at this conference include but are not limited to: Bio, Medical, Chemical, and Micro Total Analysis Systems Fabrication and Packaging Mechanical and Physical Sensors Materials and Characterization Design, Simulation and Theory Actuators Optical MEMS RF MEMS Nanotechnology Energy and Power


2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)

The conference program will consist of plenary lectures, symposia, workshops andinvitedsessions of the latest significant findings and developments in all the major fields ofbiomedical engineering.Submitted papers will be peer reviewed. Accepted high quality paperswill be presented in oral and postersessions, will appear in the Conference Proceedings and willbe indexed in PubMed/MEDLINE & IEEE Xplore


2019 IEEE 46th Photovoltaic Specialists Conference (PVSC)

Photovoltaic materials, devices, systems and related science and technology


2019 IEEE 69th Electronic Components and Technology Conference (ECTC)

premier components, packaging and technology conference


2019 IEEE International Ultrasonics Symposium (IUS)

The conference covers all aspects of the technology associated with ultrasound generation and detection and their applications.


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Periodicals related to Rheology

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Advanced Packaging, IEEE Transactions on

The IEEE Transactions on Advanced Packaging has its focus on the modeling, design, and analysis of advanced electronic, photonic, sensors, and MEMS packaging.


Biomedical Engineering, IEEE Transactions on

Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.


Components and Packaging Technologies, IEEE Transactions on

Component parts, hybrid microelectronics, materials, packaging techniques, and manufacturing technology.


Computer Graphics and Applications, IEEE

IEEE Computer Graphics and Applications (CG&A) bridges the theory and practice of computer graphics. From specific algorithms to full system implementations, CG&A offers a strong combination of peer-reviewed feature articles and refereed departments, including news and product announcements. Special Applications sidebars relate research stories to commercial development. Cover stories focus on creative applications of the technology by an artist or ...


Control Systems Technology, IEEE Transactions on

Serves as a compendium for papers on the technological advances in control engineering and as an archival publication which will bridge the gap between theory and practice. Papers will highlight the latest knowledge, exploratory developments, and practical applications in all aspects of the technology needed to implement control systems from analysis and design through simulation and hardware.


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Most published Xplore authors for Rheology

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Xplore Articles related to Rheology

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Rheological, thermal and electrical properties of poly(ethylene oxide) / boehmite nanocomposites

2009 IEEE Conference on Electrical Insulation and Dielectric Phenomena, 2009

Polyethylene oxide (PEO) is a water-soluble polymer that is widely used as a model system to examine fundamental processes. This paper details an investigation into the physical, thermal and electrical properties of PEO- based nanocomposites containing a highly hydrophilic boehmite nanofiller. The boehmite was dispersed into the PEO in solution in distilled water, by using controlled shear conditions, and the ...


Experiment with Modified Attapulgite Clay on the Treatment of Domestic Sewage

2010 International Conference on Challenges in Environmental Science and Computer Engineering, 2010

The composition structure of attapulgite clay, the application in production and life at present and process of modification experiment are described in this paper, and the different effects of sewage treatment by 200 mesh and 400 mesh physical and chemical modified attapulgite clay are discussed respectively. The results showed that in domestic sewage COD removal efficiency and decolorization rate increased ...


Adhesive block copolymers for tissue repair and drug delivery

Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society] [Engineering in Medicine and Biology, 2002

Triblock copolymers are of considerable interest in drug delivery because of their self-assembly properties and their ability to form hydrogels by warming from ambient to body temperature. In this paper, we describe a route for the conjugation of (3,4-dihydroxyphenyl)-L-alanine (DOPA) to the endgroups of PEO- PPO-PEO block copolymers. DOPA is an unusual amino acid found in mussel adhesive proteins (MAPS) ...


A new method of measuring blood viscosity with a U-shaped scanning capillary-tube viscometer using a Casson model

Proceedings of the IEEE 28th Annual Northeast Bioengineering Conference (IEEE Cat. No.02CH37342), 2002

The present study introduces a method to consider different surface tensions at two riser tubes for the viscosity measurements of fluids using a U-shaped scanning capillary-tube viscometer (SCTV). The accuracy and repeatability of the SCTV were demonstrated by comparing the viscosity results of distilled water obtained from the SCTV with the well-accepted reference data for water. Non-Newtonian viscosity of fresh ...


Experimental studies of the sensitivity of particle size distribution in emulsion co-polymerization

Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001

The control of particle size distribution (PSD) in semi-batch emulsion polymerization necessitates the identification of the best manipulative variables, with a profound influence on the PSD. The candidate variables include the feed rate of the monomers, surfactants and initiators. The monomer feed predominantly affects the growth rate, but could also influence nucleation rates. The surfactant feed influences the rates of ...


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Educational Resources on Rheology

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IEEE.tv Videos

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IEEE-USA E-Books

  • Rheological, thermal and electrical properties of poly(ethylene oxide) / boehmite nanocomposites

    Polyethylene oxide (PEO) is a water-soluble polymer that is widely used as a model system to examine fundamental processes. This paper details an investigation into the physical, thermal and electrical properties of PEO- based nanocomposites containing a highly hydrophilic boehmite nanofiller. The boehmite was dispersed into the PEO in solution in distilled water, by using controlled shear conditions, and the properties of the resulting materials were then studied. Dispersion was analysed during the solution rheology phase and the crystallisation and melting behaviour were examined using differential scanning calorimetry. The AC ramp electrical breakdown strength and dielectric response were also analysed.

  • Experiment with Modified Attapulgite Clay on the Treatment of Domestic Sewage

    The composition structure of attapulgite clay, the application in production and life at present and process of modification experiment are described in this paper, and the different effects of sewage treatment by 200 mesh and 400 mesh physical and chemical modified attapulgite clay are discussed respectively. The results showed that in domestic sewage COD removal efficiency and decolorization rate increased after a high temperature roasting or acid-modified of natural attapulgite clay. Overall, the treatment effect of 400 mesh attapulgite clay is better than 200 mesh, among which the best is 400 mesh natural attapulgite clay after 200°C calcination, COD removal efficiency reached 84.54%.

  • Adhesive block copolymers for tissue repair and drug delivery

    Triblock copolymers are of considerable interest in drug delivery because of their self-assembly properties and their ability to form hydrogels by warming from ambient to body temperature. In this paper, we describe a route for the conjugation of (3,4-dihydroxyphenyl)-L-alanine (DOPA) to the endgroups of PEO- PPO-PEO block copolymers. DOPA is an unusual amino acid found in mussel adhesive proteins (MAPS) that is believed to lend adhesive characteristics to these proteins. DOPA-containing proteins have been found to be mucoadhesive, so we surmised that incorporation of DOPA into block copolymers could improve the mucoadhesivity of these hydrogels. DOPA-modified Pluronics were freely soluble in cold water, and the copolymers aggregated into micelles at characteristic temperatures that depended on block copolymer composition and concentration in solution. Above a block copolymer concentration of approximately 20 wt%, solutions of DOPA-modified PEO-PPO-PEO block copolymers exhibited sol-gel transitions upon heating, and the characteristic temperature could be tailored between /spl sim/23/spl deg/C and 46/spl deg/C by changing the composition, concentration and molecular weight of the block copolymer. Rheological measurement of the bioadhesive interaction between DOPA-modified Pluronic and bovine submaxillary mucin indicated that DOPA-modified Pluronic was significantly more bioadhesive than unmodified Pluronic.

  • A new method of measuring blood viscosity with a U-shaped scanning capillary-tube viscometer using a Casson model

    The present study introduces a method to consider different surface tensions at two riser tubes for the viscosity measurements of fluids using a U-shaped scanning capillary-tube viscometer (SCTV). The accuracy and repeatability of the SCTV were demonstrated by comparing the viscosity results of distilled water obtained from the SCTV with the well-accepted reference data for water. Non-Newtonian viscosity of fresh human blood was measured at a body temperature of 37/spl deg/C. The results demonstrate that whole blood viscosity can be measured over a range of shear rates in less than 2-3 min without any anticoagulants using disposable U-shaped capillary-tube sets.

  • Experimental studies of the sensitivity of particle size distribution in emulsion co-polymerization

    The control of particle size distribution (PSD) in semi-batch emulsion polymerization necessitates the identification of the best manipulative variables, with a profound influence on the PSD. The candidate variables include the feed rate of the monomers, surfactants and initiators. The monomer feed predominantly affects the growth rate, but could also influence nucleation rates. The surfactant feed influences the rates of nucleation and coagulation. The initiator feed could influence the rates of nucleation and growth. This paper describes the effect of these manipulative variables on the evolution of PSD, as studied in an experimental reactor system.

  • Flow of an anisotropic dielectric liquid in a diverging channel

    Steady plane flows of an electrically anisotropic polarizable liquid in a diverging metallic channel are studied. One of the channel walls is grounded while the other is kept at a high electric potential. The electrical anisotropy of the liquid is described by a unit vector whose direction is determined by a nonequilibrium relaxation equation. A dependence of the dielectric polarization on the electric field strength and anisotropy vector is determined by an equilibrium relationship. Such a model may correspond to a suspension of polarizable fibers in a dielectric liquid. The exact self- similar solution to the formulated governing equations is obtained. Distributions of the liquid velocity, pressure, polarization, anisotropy vector, and electric field in the channel are found and examined. As with the vanishing electric field, there is a critical value of the Reynolds number at which the reverse flow starts at the channel walls. The dependence of the critical Reynolds number on the liquid properties and channel characteristics is found. In particular, the presence of a sufficiently strong electric field between the channel walls leads to a rise in the critical Reynolds number. Thus, the flow of anisotropic dielectric liquid in a diverging channel can be controlled by electrical means.

  • Biocompatible Polymeric Hydrogels with Tunable Adhesion to Both Hydrophobic and Hydrophilic Surfaces

    Biocompatible polymeric hydrogels based on poly (vinyl acetate) (PVAc) and poly (methyl vinyl ether-co-maleic anhydride) (PMVE-MA) which demonstrated tunable adhesion to both hydrophobic and hydrophilic surfaces as ideal candidates for denture adhesives were prepared. PVAc was partially hydrolyzed in a mixed solvent of ethanol and water, and then mixed with PMVE-MA. Cross- linking between these two polymers through reactions between hydroxyl groups in partially hydrolyzed PVAc and maleic anhydride groups in PMVE-MA increased their compatibility, prevented their phase separation, and resulted in the transparent hydrogels. The adhesion of these polymeric hydrogels to hydrophobic and hydrophilic surfaces could be tailored by regulating the degree of hydrolysis of PVAc and the molecular weights of both polymers. The relationship between the adhesion of hydrogles and the degree of hydrolysis as well as the molecular weights of polymers was observed by rheology and the 180deg peeling test between wet cotton cloth and poly(methyl methacrylate) (PMMA) plate which mimic hydrophilic tissue surface and hydrophobic denture surface, respectively. The optimal adhesion appeared at the vicinity of critical gel point where the elastic modulus G' overlapped with the viscous modulus G". The crosslinking degree of the polymeric hydrogles was determined as 20 wt% by extracting the non-crosslinked polymers with acetone.

  • A magnetorheological fluid as a haptic display to replicate perceived biological tissues compliance

    Presents an innovative application of magnetorheological fluids. These materials are a suspension a micron-sized, magnetizable particles in synthetic oil. Exposure to an external magnetic field induces in the fluid a modification in rheological behaviour changing it into a near-solid in few milliseconds. Just as quickly, the fluid can be returned to its liquid state with the removal of the field. MR fluids are already present on the market, used in devices such as valves, brakes, clutches, dampers. The authors report here about the possibility to use MR fluids to mimic the compressional compliance of biological tissues in order to realize a haptic display for surgical training in minimally invasive surgery applications.

  • Propagation of Love waves in lossy media

    In the paper a theory of Love waves propagating in a viscoelastic surface layer deposited on a perfect elastic substrate was considered. In the case of low-losses, (/spl omega//spl eta//sub 44///spl mu//sub B//sup 0//spl Lt/1), an analytical formula relating the attenuation coefficient of the Love wave and the viscoelastic parameters of the waveguide structure was established. This makes it possible to apply the obtained analytical formula in the Non- Destructive Testing (NDT) for determining the rheological parameters of viscoelastic bodies. This work was supported by the NATO Grant, HTECH.LG 930433.

  • A New Oil Recovery System using Steam-driven Ejector

    An application of steam-driven ejector to oil skimming system has been experimentally examined. Formation of W/O emulsion gives the spilled oil very high viscosity occasionally up to 1,000,000 mPas as well as volume inflation. The change of theological behavior makes an on-site oil recovery very difficult. The steam-driven ejector has potential advantages which are hardly seen in other conventional oil skimming devices to overcome these difficulties. Rapid heating accompanied by condensation of the steam can enhance the flow of the high viscosity spilled oil inside the suction pipe. Super sonic steam flow in the ejector may provide very strong mixing energy required for an emulsion breaking reaction when some chemical agents are employed. A small-size model of the steam-driven suction skimmer was designed and its basic suction recovery performance was experimentally tested. The tests included various aspects such as an oil recovery rate, an oil/water ratio, a steam consumption rate as well as sensitivity to wave. It is concluded that the steam-driven ejector system may be a good option for oil recovery or response.



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