Abstract: Provided is a method for creating fluid motion of an electro-sensitive movable fluid upon application of direct-current-voltage between two electrodes adjacent the fluid, the fluid having a conductivity &sgr;, and a viscosity &eegr; located inside a triangle in a graph showing a relation between a conductivity &sgr; plotted as abscissa, and a viscosity &eegr;, plotted as ordinate, of a fluid at the working temperature, said triangle having, as vertices, a point P indicated by the conductivity &sgr;=4×10−10 S/m and the viscosity &eegr;=1×100 Pa·s, a point Q indicated by the conductivity &sgr;=4×10−10 S/m and the viscosity &eegr;1×10−4 Pa·s, and a point R indicated by the conductivity &sgr;=5×10−6 S/m and the viscosity &eegr;1×10−4 Pa·s.

Abstract: The use of an electro-sensitive movable fluid, that is, a micromotor, a linear motor, a micropump and a method of using the micropump, a microactuator, and an apparatus which these devices are applied to, and a method and apparatus of controlling flow properties of a fluid.

Abstract: Provided is a method for creating fluid motion of an electro-sensitive movable fluid upon application of direct-current-voltage between two electrodes adjacent the fluid, the fluid having a conductivity &sgr;, and a viscosity &eegr; located inside a triangle in a graph showing a relation between a conductivity &sgr; plotted as abscissa, and a viscosity &eegr;, plotted as ordinate, of a fluid at the working temperature, said triangle having, as vertices, a point P indicated by the conductivity &sgr;=4×10−10 S/m and the viscosity &eegr;=1×100 Pa·s, a point Q indicated by the conductivity &sgr;=4×10−10 S/m and the viscosity &eegr;=1×10−4 Pa·s, and a point R indicated by the conductivity &sgr;=5×10−6 S/m and the viscosity &eegr;=1×10−4 Pa·s.

Abstract: The even system electricity induction operation medium of this invention has 3 halogen atoms, especially fluorine atom into a/the molecule at least it is the even system electricity induction operation medium including one kind of liquid state organic compound at least. A even system electricity induction operation medium about-the electric conduction rate under the operation environment temperature are the electricity induction operation medium that, is in the range of 4×10−10˜5×10−6S/m and the surface tension of the even system electricity induction operation medium under the operation environment temperature are 22 dyn/cm following. This even system electricity induction operation medium is difficult combustion or noninflammable nature. This even system electricity induction operation medium is difficult combustion or noninflammable.

Abstract: The present invention provides a use of an electro-sensitive movable fluid, that is, a micromotor, a linear motor, a micropump and a method of using the micropump, a microactuator, and an apparatus which these devices are applied to, and a method and an apparatus of controlling flow properties of a fluid.

Abstract: The present invention provides a use of an electro-sensitive movable fluid, that is, a micromotor, a linear motor, a micropump and a method of using the micropump, a microactuator, and an apparatus which these devices are applied to, and a method and an apparatus of controlling flow properties of a fluid.

Abstract: Provided is an electro-sensitive movable fluid composition which is comprised of a compound or a mixture of compounds which, at the working temperature of the fluid, has a conductivity .sigma., plotted as abscissa, and a viscosity .eta., plotted as ordinate, the triangle having, as vertexes, a point P indicated by the conductivity .sigma.=4.times.10.sup.-10 S/m and the viscosity .eta.=1.times.10.sup.0 Pa.S, a point Q indicated by the conductivity .sigma.=4.times.10.sup.-10 S/m and the viscosity n=1.times.10.sup.-4 Pa.S, and a point R indicated by the conductivity .sigma.=5.times.10.sup.-6 S/m and the viscosity .eta.=1.times.10.sup.-4 Pa.S. Also provided is a method for driving a rotor by producing a jet flow of the electro-sensitive movable fluid upon application of direct-current-voltage between two electrodes immersed in the fluid.

Abstract: An electrorheological fluid composition wherein inorganic/organic composite particles comprising a core 1 comprising organic polymeric compound and a shell 3 comprising inorganic microparticles 2 which are electrically semiconducting in a semiconducting region in which conductivity is within a range of 10.sup.3-10.sup.-11 .OMEGA..sup.-1 /cm at room temperature, are dispersed in an electrically insulating medium. These inorganic/organic composite particles are produced by means of a method in which the cores 1 and the shells 3 are simultaneously formed, and the surfaces thereof are preferably polished. An electrorheological fluid composition possessing electrorheological effects, having superior storage stability, capable of use over long periods, having little abrasiveness, which is not affected by environmental temperature or humidity, a current value of which is stable, and which has little power consumption.

Abstract: An actuator for converting electrical energy into rotary or reciprocating motion comprising a casing filled with an electro-sensitive fluid, the casing having a plurality of electrodes affixed along its inner periphery and including a rotary member which is impelled by the flow of the electro-sensitive fluid when DC voltage is applied to the electrodes.

Abstract: An electrorheological fluid which possesses high electrorheological effects, has superior storage stability and longevity, does not damage instrumentation, is unaffected by ambient temperature or humidity, has stable current values, and low power consumption, is disclosed. In the electrorheological fluid, inorganic/organic composite particles comprising a core comprising inorganic polymeric compound, and a shell comprising an inorganic material particle possessing electrorheological properties, are dispersed in an electrically insulating medium. The surfaces of these inorganic/organic composite particles may be polished, and furthermore, the inorganic/organic composite particles are preferably produced by means of a method in which the core and the shell are formed simultaneously.

Abstract: An electro-sensitive composition comprising a fluorine compound having a predetermined structure, and an electrically insulating medium capable of dissolving this fluorine compound when a voltage is applied thereto, is disclosed. This electro-sensitive composition has a straight chain or cyclic fluorocarbon, and fluorine compound particles possessing dissociable polarity, dispersed in an electrically insulating medium; by means of the application of a voltage to this electro-sensitive composition, the transparency and viscosity thereof can be easily adjusted.

Abstract: An electro-sensitive composition comprising a fluorine compound having a predetermined structure, and an electrically insulating medium capable of dissolving this fluorine compound when a voltage is applied thereto, is disclosed. This electro-sensitive composition has a straight chain or cyclic fluorocarbon, and fluorine compound particles possessing dissociable polarity, dispersed in an electrically insulating medium; by means of the application of a voltage to this electro-sensitive composition, the transparency and viscosity thereof can be easily adjusted.

Abstract: An electro-sensitive composition comprising a fluorine compound having a predetermined/structure, and an electrically insulating medium capable of dissolving this fluorine compound when a voltage is applied thereto, is disclosed. This electro-sensitive composition has a straight chain or cyclic fluorocarbon, and fluorine compound particles possessing dissociable polarity, dispersed in an electrically insulating medium; by means of the application of a voltage to this electro-sensitive composition, the transparency and viscosity thereof can be easily adjusted.

Abstract: Electrorheological fluid compositions of this invention are dispersions in an electrically insulating medium of 10 to 50% by volume of spherical silica particles prepared by hydrolyzing a silicon alkoxide of the general formula Si(OR).sub.4 in which R is an alkyl group in the presence of an alkali catalyst and drying at or below 500.degree. C., show excellent fluidity in the absence of an applied voltage, vary reversibly to the state of high viscosity or even to the state of gel on application of a voltage, and have good storage stability.