摘要:
A method is provided for depositing a thin film on a substrate in a process chamber with reduced incidence of plasma charge damage. A process gas containing a precursor gases suitable for forming a plasma is flowed into a process chamber, and a plasma is generated from the process gas to deposit the thin film on the substrate. The precursor gases are flowed into the process chamber such that the thin film is deposited at the center of the substrate more rapidly than at an edge of the substrate.
摘要:
The nucleotide sequences of the genomes of eleven molecular clones for non-subtype B isolates of human immunodeficiency virus type 1 are disclosed. The invention relates to the nucleic acids and peptides encoded by and/or derived from these sequences and their use in diagnostic methods and as immunogens.
摘要:
The present invention provides a novel electrolyte solvent which is usable with a variety of carbonaceous and metal oxide electrode active materials, providing improved performance over a broad temperature range, and which is stabilized to maintain cell capacity over a number of cycles.
摘要:
The present invention provides a method for cycling a battery, containing lithium metal oxide, particularly lithium manganese oxide (LMO) active material, in a cell in a manner which reduces the extent to which loss of capacity occurs. The present method of operation extends the cycle life of such battery.
摘要:
The present invention provides an apparatus for depositing a film on a substrate comprising a processing chamber, a substrate support member disposed within the chamber, a first gas inlet, a second gas inlet, a plasma generator and a gas exhaust. The first gas inlet provides a first gas at a first distance from an interior surface of the chamber, and the second gas inlet provides a second gas at a second distance that is closer than the first distance from the interior surface of the chamber. Thus, the second gas creates a higher partial pressure adjacent the interior surface of the chamber to significantly reduce deposition from the first gas onto the interior surface. The present invention also provides a method for depositing a film on a substrate comprising: providing a chemical vapor deposition chamber, introducing first gas through a first gas inlet at a first distance from an interior surface of the chamber, introducing a second gas through a second gas inlet at a second distance from the interior surface of the chamber, wherein the second gas creates a higher partial pressure adjacent the interior surface of the chamber to prevent deposition from the first gas on the interior surface and generating a plasma of the processing gases. Alternatively, the first gas is introduced at a different angle from the second gas with respect to a substrate surface.
摘要:
The subject invention discloses a novel electrolyte for a solid battery system. Specifically, an electrolyte solvent of chlorinated diethyl carbonates demonstrate good electrochemical stability in conjunction with specific anode and cathode materials. When used with a propylene carbonate co-solvent, it reduces or eliminates the decomposition of propylene carbonate during the first cycle. It is appropriate with a variety of electrolyte salts, and especially with LiBF.sub.4. Chloro-substituted diethyl carbonates also show good high and low temperature performance in electrochemical cells.
摘要:
The present invention provides a novel composition and method for preventing decomposition of one or more electrochemical cell components comprising an electrode having an active material, and an electrolyte. The method of the invention, for the first time, effectively overcomes problems which arise between the interaction of cell components and contaminate water retained in a cell. Such contaminate water reacts with the electrolyte which comprises a salt of lithium in a solvent. Solubilizing of the salt in solution with attendant interaction between the salt and water causes formation of hydrogen-containing acids. The method of the invention effectively blocks decomposition of a lithium metal oxide cathode active material, and particularly lithium manganese oxide (LMO, nominally LiMn.sub.2 O.sub.4). Such decomposition is prevented by including in the cell a basic compound which forms an electron donor species in the electrolyte solution; and by neutralizing at least a portion of the acid by reacting the donor species with the hydrogen-containing acids thereby preventing decomposition of the lithium manganese oxide by the acid. The preservation of the lithium manganese oxide prevents degradation of other cell components by other mechanism. The basic compound is desirably an organic base, preferably a butylamine.
摘要:
An intensive long-term investigation of marine organisms as sources of new anticancer drugs has led to the isolation and structural elucidation (primarily by high field NMR and mass spectrometry) of halistatin 2, a new polyether macrolide of the halipyran-type, from the Western Indian Ocean sponge Axinella cf. carteri (Dendy). Halistatin 2 (1.4.times.10.sup.-6 % yield) caused the accumulation of cells arrested in mitosis, inhibited tubulin polymerization, and inhibited the binding of radiolabeled vinblastine and GTP to tubulino. Further, Halistatin 2 displayed significant activity against selected human tumor cell lines.