摘要:
Embodiments of the invention provide methods for depositing a material on a substrate within a processing chamber during a vapor deposition process, such as an atomic layer deposition (ALD) process. In one embodiment, a method is provided which includes sequentially exposing the substrate to a first precursor gas and at least a second precursor gas while depositing a material on the substrate during the ALD process, and continuously or periodically exposing the substrate to a treatment gas prior to and/or during the ALD process. The deposition rate of the material being deposited may be controlled by varying the amount of treatment gas exposed to the substrate. In one example, tantalum nitride is deposited on the substrate and the alkylamino metal precursor gas contains a tantalum precursor, such as pentakis(dimethylamino) tantalum (PDMAT), the second precursor gas contains a nitrogen precursor, such as ammonia, and the treatment gas contains dimethylamine (DMA).
摘要:
Methods of generating and expanding human hemangio-colony forming cells and non-engrafting hemangio cells in vitro and methods of expanding and using such cells are disclosed. The methods permit the production of large numbers of hemangio-colony forming cells, non-engrafting hemangio cells as well as derivative cells, such as hematopoietic and endothelial cells. The cells obtained by the methods disclosed may be used for a variety of research, clinical, and therapeutic applications. Human non-engrafting hemangio cells are a novel progenitor cell population that is related to but distinct from the hemangioblast and human hemangio-colony forming cells. The invention also provides compositions, preparations, and solutions comprising hemangio-colony forming cells, non-engrafting hemangio cells or cells differentiated therefrom. The compositions, preparations, and solutions include cryopreserved preparations and substantially purified preparations, as well as mixed compositions formulated in combination with related hemangioblast progenitor cell types that can engraft into the bone marrow.
摘要:
Embodiments of the invention provide processes for depositing a cobalt layer on a barrier layer and subsequently depositing a conductive material, such as copper or a copper alloy, thereon. In one embodiment, a method for depositing materials on a substrate surface is provided which includes forming a barrier layer on a substrate, exposing the substrate to dicobalt hexacarbonyl butylacetylene (CCTBA) and hydrogen to form a cobalt layer on the barrier layer during a vapor deposition process (e.g., CVD or ALD), and depositing a conductive material over the cobalt layer. In some examples, the barrier layer and/or the cobalt layer may be exposed to a gas or a reagent during a treatment process, such as a thermal process, an in situ plasma process, or a remote plasma process.
摘要:
Embodiments of the invention provide methods for depositing a material on a substrate within a processing chamber during a vapor deposition process, such as an atomic layer deposition (ALD) process. In one embodiment, a method is provided which includes sequentially exposing the substrate to a first precursor gas and at least a second precursor gas while depositing a material on the substrate during the ALD process, and continuously or periodically exposing the substrate to a treatment gas prior to and/or during the ALD process. The deposition rate of the material being deposited may be controlled by varying the amount of treatment gas exposed to the substrate. In one example, tantalum nitride is deposited on the substrate and the alkylamino metal precursor gas contains a tantalum precursor, such as pentakis(dimethylamino) tantalum (PDMAT), the second precursor gas contains a nitrogen precursor, such as ammonia, and the treatment gas contains dimethylamine (DMA).
摘要:
The present disclosure relates to methods for dedifferentiating and transdifferentiating recipient cells, preferably human somatic cells. These methods minimize the risk of undesired genome sequence alteration. These methods employ reprogramming factors, which may be used alone or in certain combinations with one another. These methods have application especially in the context of cell-based therapies, establishment of cell lines, and the production of genetically modified cells.
摘要:
The present invention is directed to a device for splitting a propelled aerosol cloud. The device utilizes a curved spray chamber and a thermal technique to divert any desired portion of the aerosol to waste. The remainder of the aerosol is made available to an ELSD or similar instrument for analysis.
摘要:
An evaporative air cooler with a rotary fan blowing and evaporating droplets generated by an impeller, which shares the same motor shaft with the rotary fan. The evaporative air cooler comprises a housing (1) having rear inlets (23), front outlets (3), and a motor-supporting plate (6). An electric motor (7) is vertically mounted to the plate with its rotating shaft being directed downward and connected to a rotary fan (9). The rotary fan sucks, blows and evaporate droplets produced by an impeller (14) with blades (11) and a fluid-sucking tube (13).
摘要:
An in-vehicle garage door monitoring system. An example monitoring system includes a sensor mounted near a garage door to determine a status of the garage door. The example monitoring system also includes a transmitter mounted near the garage door and communicatively coupled with the sensor, the transmitter issuing a signal corresponding to the status of the garage door. The example monitoring system also includes a receiver at the vehicle to receive the signal from the transmitter, the receiver issuing at least one notification to an occupant of the vehicle indicating the status of the garage door.
摘要:
A laser guided parking assistance device and methods of operation are disclosed. An example laser guided parking assistance device includes a tilt switch to detect a vertical orientation of a horizontal orientation. The laser guided parking assistance device also includes a laser to emit a laser light beam in response to the tilt switch detecting the horizontal orientation. In an example, a laser guided parking assistance device is configured as a circuit including a battery power source, a laser diode connected in series with the battery power source, and a first tilt switch connected between the battery power source and the laser diode. The tilt switch opens in a vertical position to cut electrical power from the battery power source to the laser diode The first tilt switch closes in a horizontal position to connect electrical power from the battery power source to the laser diode.
摘要:
Methods of fabricating light emitting diodes using a degas process are described. For example, a method includes providing a partially formed group III-V material layer stack of an LED. Contaminants are removed from the partially formed group III-V material layer stack by a degas process. Formation of the group III-V material layer stack of the LED is then completed.