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      Rongjia Tao

      Rongjia Tao

      Department of Physics, Temple University, SERC Room 406, 1925 N 12th Street, Philadelphia, PA 19122, United States | Dept. of Physics, Temple University, SERC Room 406, 1925 ...

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      Rongjia Tao:Expert Impact

      Concepts for whichRongjia Taohas direct influence:Blood viscosity,Electric field,Quantum hall,Electrorheological fluids,Liquid suspensions,Crude oil,Strong electric field,Superconducting particles.

      Rongjia Tao:KOL impact

      Concepts related to the work of other authors for whichfor which Rongjia Tao has influence:Magnetic field,Electrorheological fluids,Yield stress,Quantum hall,Crude oil,Ground state,Rheological properties.

      KOL Resume for Rongjia Tao

      Year
      2018

      Department of Physics, Temple University, SERC Room 406, 1925 N 12th Street, Philadelphia, PA 19122, United States

      2016

      Department of Physics, Temple University, Philadelphia, PA 19122

      2015

      Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA.

      2014

      Department of Physics, Temple University, Philadelphia, PA 19122, USA

      2011

      Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA

      2009

      Department of Physics, Temple University, Philadelphia, Pennsylvania 19122

      2006

      Department of Physics, Temple University, Philadelphia, PA 19122-6082, USA

      2003

      Department of Physics, Temple University, Philadelphia, Pennsylvania 19122-6082, USA

      2002

      Department of Physics, Temple University, 1900 N. 13th Street, Philadelphia, PA 19122-6082, USA

      2001

      Department of Physics, Southern Illinois University, Carbondale, IL 62901, USA

      2000

      Department of Physics, Southern Illinois University at Carbondale, Carbondale, USA, US

      1999

      Department of Physics, Southern Illinois University

      1998

      Department of Physics, Southern Illinois University, Carbondale, Illinois 62901

      1997

      Department of Physics, Southern Illinois University at Carbondale, Carbondale, Illinois 62901-4401

      1995

      Department of Physics, Southern Illinois University at Carbondale, Illinois

      1994

      Department of Physics, Southern Illinois University, Carbondale, Illinois 62901, USA

      1992

      Department of Physics, Southern Illinois University, One Lloyd Avenue, Carbondale, IL 62901, Phone: (618) 536-2117, Fax: (618) 453-8216

      1991

      Department of Physics, Southern Illinois University, 62901, Carbondale, IL, USA

      1990

      Supercomput. Comput. Res. Inst., Florida State Univ., Tallahassee, FL, USA

      1989

      Department of Physics, Northeastern University, Boston, Massachusetts 02115

      1988

      Dept. of Phys., Northeastern Univ., Boston, MA, USA

      1986

      Dept. of Phys., Washington Univ., Seattle, WA, USA

      Department of Physics, University of Southern California, Los Angeles, California 90089-0484

      1985

      Department of Physics FM-15, University of Washington, Seattle, Washington 98195

      1984

      Dept. of Phys., Univ. of Washington, Seattle, WA, USA

      Department of Physics, FM-15, University of Washington, Seattle, Washington 98195

      1983

      Department of Physics, Columbia University, New York, New York 10027

      Sign-in to see all concepts, it's free!
      Sample of concepts for which Rongjia Tao is among the top experts in the world.
      Concept World rank
      liquid suspensions great #1
      flow viscosity #1
      inclusion varying amounts #1
      electrorheology improves #1
      cenovus crude oil #1
      ball size 1−t #1
      laser diffraction determination #1
      whitenoise gaussian potential #1
      electrodes superconducting particles #1
      ∂x2λvxpx gaussian #1
      conductivity bubbles #1
      large particle aggregation #1
      addition viscosity reduction #1
      fluid broken chains #1
      qhe downward cusp #1
      induced electrorheological solid #1
      navy sulfur diesel #1
      theory electrorheology fluids #1
      size nanoparticles models #1
      evaporation engine #1
      voltage peaks frequencies #1
      magnetorheological fluids task #1
      rotation local field #1
      size nonmagnetic microparticles #1
      tc39 ball size #1
      theory new technology #1
      broken chains flow #1
      electrorheological treatment #1
      qfold degenerate #1
      quantum systems essence #1
      sphere axis perpendicular #1
      80 kpa compression #1
      robust thick columns #1
      applications oil transport #1
      pipeline laboratory experiments #1
      columnar particle density #1
      eipqπ1 #1
      induced structure structure #1
      mrj density #1
      hall degenerate #1
      viscosity petroleum fuels #1
      hall σhp qe2 #1
      expipq filling factor #1
      normal conducting particles #1
      √6 #1
      band sixth band #1
      ∂px #1
      Sign-in to see all concepts, it's free!

      Prominent publications by Rongjia Tao

      KOL-Index: 5566

      The yield stress of magnetorheological (MR) fluids depends on the induced solid structure. Since thick columns have a yield stress much higher than a single-chain structure, we improve the yield stress of MR fluids by changing the fluid microstructure. Immediately after a magnetic field is applied, we compress the MR fluid along the field direction. Scanning electron microscopy images show that particle chains are pushed together to form thick columns. The shear force measured after the ...

      Known for Yield Stress | Magnetorheological Fluids | 800 Kpa | Thick Columns | Magnetic Field
      KOL-Index: 5239

      A method with pulsed electric or magnetic field to reduce the viscosity of crude oil is developed. Specifically, for paraffin-base crude oil, a magnetic field pulse can effectively reduce its viscosity for several hours, while, for asphalt-base crude oil or mixed-base crude oil, an electric field pulse can do the same. The method does not change the temperature of the crude oil; instead, it temporary aggregates paraffin particles or asphaltene particles inside the crude oil into large ...

      Known for Crude Oil | Magnetic Field | Pulsed Electric | Viscosity Reduction | Asphaltene Particles
      KOL-Index: 4989

      Blood viscosity is a major factor in heart disease. When blood viscosity increases, it damages blood vessels and increases the risk of heart attacks. Currently, the only method of treatment is to take drugs such as aspirin, which has, however, several unwanted side effects. Here we report our finding that blood viscosity can be reduced with magnetic fields of 1 T or above in the blood flow direction. One magnetic field pulse of 1.3 T lasting ~1 min can reduce the blood viscosity by ...

      Known for Blood Viscosity | Magnetic Fields | Flow Velocity | Hematocrit Humans | Models Cardiovascular
      KOL-Index: 4914

      Reducing the crude oil viscosity is important for the oil production and transportation. The micro–nanotechnology of viscosity reduction associated with electric field is found to be universal, working for all kinds of crude oil, including asphalt base crude oil and paraffin base crude oil. Especially at low temperature, the electric field is extremely efficient: in a couple of seconds after the electric field is applied, the viscosity is reduced substantially, making the flow rate in a ...

      Known for Electric Field | Crude Oil | Reducing Viscosity | Low Temperature
      KOL-Index: 4009

      To enhance the yield shear stress of magnetorheological (MR) fluids is an important task. Since thick columns have a yield stress much higher than a single-chain structure, we enhance the yield stress of an MR fluids by changing the microstructure of MR fluids. Immediately after a magnetic field is applied, we compress the MR fluid along the field direction. SEM images show that the particle chains are pushed together to form thick columns. The shear force measured after the compression ...

      Known for Magnetorheological Fluids | Yield Stress | Magnetic Field | Particle Chains | Shear Force
      KOL-Index: 3723

      High- Tc superconducting particles of μm size in a strong electric field bind themselves together to form macroscopic balls in milliseconds. Each ball holds over 106 particles and bounces between the electrodes without losing any. The ball formation is a result of superconductivity. As the c-axis coherence length is shorter than the Thomas-Fermi screening length, the electric field produced by the charged surface layer turns off the coupling between the interlayers. This loss of ...

      Known for Superconducting Balls | Electric Field | Ball Formation | Charged Surface Layer | 106 Particles
      KOL-Index: 3714

      The temporal evolution of three-dimensional structure in an electrorheological (ER) fluid is examined by a computer simulation. A parameter B characterizing the ratio of the Brownian force to the dipolar force is introduced. For a wide range of B, the ER fluid has a rapid chain formation followed by aggregation of chains into thick columns which has a body-centered tetragonal lattice structure. The Peierls-Landau instability of single chains help formation of thick columns. If the ...

      Known for Electrorheological Fluid | Structure Formation | Brownian Force | Thick Columns | Computer Simulation
      KOL-Index: 3464

      We discuss the periodic boundary condition, degeneracy of the ground state, impurity effect, and topological invariant in the quantum Hall effect. If a two-dimensional electron Hall system with a uniform background is confined on a toroidal geometry, the ground state is q-fold degenerate at filling factor ν=p/q when there is an energy gap Δ. Weak impurities make the ground state quasi- degenerate. If the driving force of the Hall current has some low but finite speed, or the applied ...

      Known for Quantum Hall | Topological Invariant | Ground State | Energy Gap | Qfold Degenerate
      KOL-Index: 3421

      Improving engine efficiency and reducing pollutant emissions are extremely important. Here, we report our fuel injection technology based on the new physics principle that proper application of electrorheology can reduce the viscosity of petroleum fuels. A small device is thus introduced just before the fuel injection for the engine, producing a strong electric field to reduce the fuel viscosity, resulting in much smaller fuel droplets in atomization. Because combustion starts at the ...

      Known for Efficient Combustion | Engine Efficiency | Fuel Viscosity | Small Device | Proper Application
      KOL-Index: 3341

      It is shown that gauge-invariance arguments imply the possibility of the fractional quantum Hall effect; the Hall conductance is accurately quantized to a rational value. The ground state of a system showing the fractional quantum Hall effect must be degenerate; the nondegenerate ground state can only produce the integral quantum Hall effect.

      Known for Gauge Invariance | Quantum Hall | Ground State | Produce Integral
      KOL-Index: 3334

      A shear flow of one-component polarizable fluid in a strong electric field has a structural transition at a critical shear stress. When the shear stress is increased from zero up to the critical shear stress, the flow (in the x direction) has a flowing-chain (FC) structure, consisting of tilted or broken chains along the field (z direction). At the critical shear stress, the FC structure gives way to a flowing-hexagonal-layered (FHL) structure, consisting of several two-dimensional ...

      Known for Shear Flow | Electric Field | Particles Strings | Fluid Strong | Chain Structure
      KOL-Index: 3318

      We use Monte Carlo simulations to investigate the ground state of electrorheological (ER) fluids in a strong electric field. Our results suggest a body-centered tetragonal (bct) lattice with conventional Bravais vectors a1= √6 ax^, a2= √6 ay^, and a3=2az^ where a is the radius of dielectric spheres and the z axis is the direction of the applied electric field. This bct lattice can be regarded as a compound of chains of class A and class B where chains of class B are obtained from chains ...

      Known for Electrorheological Fluids | Ground State | Bct Lattice | Carlo Simulations | Dielectric Spheres
      KOL-Index: 3286

      Electric field and magnetic field can be applied to any liquid suspensions with a discrepancy in permittivity or permeability between the suspended contents and the base liquid (Tao et al., 2014, 2016; Du et al., 2011; Tao et al., 2011; Huang et al., 2011). As we know, the diesel has some benefits compared to gasoline (Aoyagi et al., 2006). And the fractional distillate of petroleum fuel oil has the limited reserve. Fortunately, the biodiesel can be used for the petroleum diesel engines ...

      Known for Electric Field | Reducing Viscosity | Diesel Engines | Fuel Oil
      KOL-Index: 3198

      The induced electrorheological solid has thick columns in the field direction (z axis), spreading between two electrodes. The ground state is proposed to be a body-centered tetragonal lattice with a1= √6 ax^, a2= √6 ay^, and a3=2az^, where a is the radius of dielectric spheres. This bct lattice can be regarded as a compound of chains of class A and B, where chains B are obtained from chains A by shifting a distance a in the z direction.

      Known for Induced Electrorheological Solid | Ground State | Field Direction | Thick Columns | Dielectric Spheres

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      Department of Physics, Temple University, SERC Room 406, 1925 N 12th Street, Philadelphia, PA 19122, United States | Dept. of Physics, Temple University, SERC Room 406, 1925 N. 12th Street, Philadelphia, PA 19122, United States | Department of Physic

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