摘要:
There is provided a plasma generating apparatus comprising: a waveguide for guiding a microwave; a vacuum vessel connected to the waveguide, having a means for supplying a gas for discharging electrons and a means for evacuating; and a dielectric member in a tube-like shape or a rod-like shape which is inserted in the vacuum vessel, wherein the dielectric member is provided with a means for emitting the microwave, whereby it is possible to apply the electric power of microwave effectively to plasma of high density exceeding so-called cut-off density and to homogenize the distribution of plasma in the vacuum vessel.
摘要:
A plasma generating apparatus capable of improving the uniformity of a plasma processing and coping with a larger diameter of a substrate is obtained. Microwaves are distributed and emitted from a waveguide through the branching portions of a T branch to four rod antennas. The microwaves are introduced through four dielectric tubes into a vacuum vessel. In the vacuum vessel, a multi-cusp magnetic field and an electron cyclotron resonance region are caused by permanent magnets located around the vessel and, by an interaction between a vibrational electric field of the microwaves and a magnetic field, highly uniform plasma is generated in a region where a substrate or the like is subjected to a plasma processing.
摘要:
There is described a wafer processing apparatus intended to efficiently secure a wafer on an electrostatic chuck. A heater is disposed in a processing chamber for heating a wafer, and a dielectric plate for supporting the wafer is also disposed in the processing chamber. First and second electrodes are embedded in the dielectric plate, and first and second variable D.C. power supplies are disposed so as to supply voltages to the first and second electrodes, respectively. After the wafer has been placed on an electrostatic chuck, the wafer is pre-heated before being subjected to attraction force. After completion of the pre-heating phase, the first and second D.C. power supplies supply voltages to the first and second electrodes, thus securing the wafer on the dielectric plate.
摘要:
An introduction pipe for gas or the like for introducing water or water vapor is connected to a vacuum process chamber. The vacuum process chamber is evacuated through an evacuation exhaust port, and the introduced water vapor or water is solidified or liquefied by adiabatic expansion using a floating fine particle as a core. The particle on which the water vapor or the like is solidified or liquefied is discharged outside the vacuum process chamber. Thus, a semiconductor manufacturing device capable of reducing the number of fine particles on a wafer without decreasing uptime ratio is achieved.
摘要:
A plasma processing apparatus capable of attracting and holding a semiconductor wafer reliably once the processing of the semiconductor wafer is started includes: a vacuum chamber; an electrode arranged inside the vacuum chamber; a dielectric film formed on a surface of the electrode; a gas supply port leading to the vacuum chamber; a high-frequency electric power supply connected to the electrode; a memory operation unit which depends on a processing condition for producing a desired plasma, to calculate and output the voltage value corresponding to the sum of a value of a minimal actual attract and hold voltage required to be applied between one surface of the semiconductor wafer mounted on the dielectric film and a surface of the dielectric film to attract and hold one surface of the semiconductor wafer on the surface of the dielectric film and a value of a self-bias voltage generated at the other surface of the semiconductor wafer when the desired plasma is produced; and an electrostatic chuck power supply for applying the voltage corresponding to the voltage value calculated in the memory operation unit to the electrode. An electrostatic attract and hold vacuum chucking method employed in the plasma processing apparatus is also disclosed.
摘要:
Provided is a rubber composition capable of preventing discoloration due to an amine-based antiaging agent and wax without deteriorating the ozone resistance not only in cases where the rubber composition is used in side wall portions of tires but also in cases where the rubber composition is used in tread portions of tires. The rubber composition comprises at least one rubber component selected from a dienic synthetic rubber and a natural rubber and, as incorporated therein, at least one nonionic surfactant selected from specific compounds.
摘要:
Provided is a rubber composition comprising an inorganic filler, a compound having at least one group A reacting with a rubber and two or more groups B adsorbing on the inorganic filler described above in the same molecule, a compound having the group A reacting with a rubber and an amino group in the same molecule or acrylate or methacrylate having a specific structure and further comprising, if necessary, a silane coupling agent. This makes it possible to provide a rubber composition which is excellent in the dispersibility of an inorganic filler, so that it does not elevate a viscosity of a non-vulcanized rubber and does not damage the processability and which does not bring about roughening on the surface of a rubber and is improved in a storage modulus.
摘要:
A mixed fuel of coal and fuel oil can be effectively stabilized by adding thereinto a compound obtained by the condensation reaction between a sulfonated aromatic compound having a hydrophobic group and formalin.
摘要:
The present invention relates to an oil agent for carbon-fiber precursor acrylic fiber, including at least one type of compound selected from groups of a hydroxybenzoate (Compound A), a cyclohexanedicarboxylic acid (Compound B and C), a cyclohexanedimethanol and/or a cyclohexanediol and a fatty acid (Compound D and E) and an isophoronediisocyanate-aliphatic alcohol adduct (Compound F), an oil composition for carbon-fiber precursor acrylic fiber, a processed-oil solution for carbon-fiber precursor acrylic fiber, and a method for producing a carbon-fiber precursor acrylic fiber bundle, and a carbon-fiber bundle using the carbon-fiber precursor acrylic fiber bundle.
摘要:
In order to provide a rubber composition which is improved in dispersibility of silica in rubber compositions and can be improved as well in heat build-up and processability without causing increasing a viscosity of unvulcanized rubber and retarding a vulcanization rate, and a tire prepared by using the same, the rubber composition is endowed with a constitution in which at least one rubber component selected from natural rubber and/or diene base synthetic rubbers is compounded with a white filler and at least one of monoalkanolamides represented by the following Formula (I): [in Formula (I) described above, R1 represents an alkyl group or an alkenyl group having 1 to 13 carbon atoms, and the alkyl group and alkenyl group may be any of a linear type, a branched type and a cyclic type; and R2 represents a hydroxyalkyl group or a hydroxyalkyl group having an oxyalkylene unit].