摘要:
A modified TDEAT (tetrakisdiethylamino titanium) based MOCVD precursor for deposition of thin amorphous TiN:Si diffusion barrier layers. The TDEAT is doped with 10 at % Si using TDMAS (trisdimethlyaminosilane); the two liquids are found to form a stable solution when mixed together. Deposition occurs via pyrolysis of the vaporised precursor and NH3 on a heated substrate surface. Experimental results show that we have modified the precursor in such a way to reduce gas phase component of the deposition when compared to the unmodified TDEAT-NH3 reaction. Deposition temperatures were the range of 250-450° C. and under a range of process conditions the modified precursor shows improvements in coating conformality, a reduction in resistivity and an amorphous structure, as shown by TEM and XRD analysis. SIMS and scanning AES have shown that the film is essentially stoichiometric in Ti:N ratio and contains low levels of C (˜0.4 at %) and trace levels of incorporated Si (0.01
摘要:
A method induces plasma vapour deposition of metal into a recess in a workpiece. The method achieves re-sputtering of the metal at the base of the recess with a sputter gas by utilising a mixture of Ar and He and/or Ne as the sputter gas with a ratio of He and/or Ne:Ar of at least about 10:1.
摘要:
A method induces plasma vapor deposition of metal into a recess in a workpiece. The method achieves re-sputtering of the metal at the base of the recess with a sputter gas by utilizing a mixture of Ar and He and/or Ne as the sputter gas with a ratio of He and/or Ne:Ar of at least about 10:1.
摘要:
This invention relates to a method of processing a workpiece in a chamber. Initially a surface of the workpiece is treated by a process which includes supplying a reactive gas to the chamber through a first gas supply and the surface is then further treated using a process gas supplied to the chamber through a second gas supply during the supply of the process gas so that a portion of the process gas flows into the first gas supply from the chamber to mitigate against residual reactive gas entering the chamber during the further treatment step.
摘要:
Various methods of programming a processing system utilizing a computer having a configuration canvas, at least one processor, and a plurality of function objects is disclosed. A processing configuration is created by placing object icons associated with function objects onto the canvas. Execution paths are automatically routed between the object icons based on orientations of icons on the canvas. Data flow paths are created between object icons on the canvas separately from the routings of the execution paths. Execution paths can be re-routed to increase the versatility of the processing system. Also, visual instruments and instrument icons can be utilized to further graphically illustrate and control the processing configuration.
摘要:
A fuel cell system (12) wherein a fluid-supplying device (10) supplies a cathode gas (e.g., an oxygen-containing gas) and an anode gas (e.g., a hydrogen-containing gas) to a fuel cell (14). The fluid-supplying device (12) comprises a cathode-side compressor (30c), an anode-side compressor (30a), and a motor (32). The motor (32) is driveably coupled to both the rotor (62c) of the cathode-side compressor (30c) and the rotor (62a) of the anode-side compressor (30a).
摘要:
A superconducting magnet system comprises a cryogenic vessel (1), a superconducting magnet (11) contained in an inner reservoir (16) within the vessel (1) to be cooled by liquid helium within the inner reservoir (16), and an outer reservoir (7) containing liquid helium and linked to the inner reservoir (16) by a feed tube (10) and a needle valve (9). In operation of the system current is supplied to the magnet (11) by a removable current lead (19) extending through the wall of the vessel (1) by way of a supply passage (17) in order to initiate superconducting current flow in the magnet. The supply of current to the magnet (11) is then stopped and the lead (19) is removed whilst the superconducting current flow persists in the magnet. After an extended period of superconducting current flow in the magnet (11) and without stopping such superconducting current flow, liquid helium at a temperature of about 4.2 K may be supplied to an upper part of the inner reservoir (16) above the magnet (11) from the outer reservoir (7) such that the magnet is still surrounded by liquid helium at a temperature of below 4.2 K. After a period of time the supply of liquid helium to the inner reservoir 16 is stopped, and the liquid helium in the inner reservoir (7) is cooled to a temperature below 4.2 K. Such a system is capable of being operated at very low temperatures down to below the lambda point, and of producing magnetic fields of high strengths and stability suitable for NMR spectroscopy.
摘要:
The present invention provides an edible composition for oral delivery of an active agent such as a retinide. The composition comprises, in the form of a dry flowable powder: (a) an active agent such as a retinide; (b) lipid matrix composition; (c) optionally sweetener; (d) flour. Compositions of the invention may be administered per se or mixed with a solid or liquid food carrier, for direct oral consumption by a subject or administration through a feeding tube.
摘要:
A superconducting magnet system comprises an annular cryogenic vessel (1) having an outer vacuum container (2) and containing a superconducting magnet (3) within an annular reservoir (4) containing liquid helium. A cryocooler (5) has a first stage (7) linked by a thermal link (9) to a thermal shield (6) within the vacuum space surrounding the reservoir (4) and a second stage (8) that serves to recondense evaporating helium gas from the reservoir (4). In the absence of special measures, such a cryocooled shield (6) would warm up quickly in the event of a power failure and would radiate heat onto the reservoir (4) causing all of the liquid helium to evaporate. However an inertial shield (11) is provided between the reservoir (4) and the thermal shield (6) in such a position that the outgoing helium gas from the reservoir (4) carries away the heat being transferred to the inertial shield (11) from the thermal shield (6) and thus slows down the rate at which the thermal inertial shield (11) warms up. Such a system does not require cryogenic fluid refilling at intervals and is less sensitive to the effect of a power failure or malfunction than existing systems.
摘要:
A superconducting magnet system comprises a cryogenic vessel (1), a superconducting magnet (11) contained in an inner reservoir (16) within the vessel (1) to be cooled by liquid helium within the inner reservoir (16), and an outer reservoir (7) containing liquid helium and linked to the inner reservoir (16) by a feed tube (10) and a needle valve (9). In operation of the system current is supplied to the magnet (11) by a removable current lead (19) extending through the wall of the vessel (1) by way of a supply passage (17) in order to initiate superconducting current flow in the magnet. The supply of current to the magnet (11) is then stopped and the lead (19) is removed whilst the superconducting current flow persists in the magnet. After an extended period of superconducting current flow in the magnet (11) and without stopping such superconducting current flow, liquid helium at a temperature of about 4.2 K may be supplied to an upper part of the inner reservoir (16) above the magnet (11) from the outer reservoir (7) such that the magnet is still surrounded by liquid helium at a temperature of below 4.2 K. After a period of time the supply of liquid helium to the inner reservoir 16 is stopped, and the liquid helium in the inner reservoir (7) is cooled to a temperature below 4.2 K. Such a system is capable of being operated at very low temperatures down to below the lambda point, and of producing magnetic fields of high strengths and stability suitable for NMR spectroscopy.