摘要:
The present invention provides new polyimide materials suitable for use in optically transparent fiber composites, ribbon composites, and optical communications applications. The polyimide compounds include monomeric repeat units comprising a fluorinated moiety and a fluorene cardo structure. The polyimides exhibit good optical transparency and have a low absolute thermo-optic coefficient (|dn/dT|).
摘要:
The present invention provides new polyimide materials suitable for use in optically transparent fiber composites, ribbon composites, and optical communications applications. The polyimide compounds include monomeric repeat units comprising a fluorinated moiety and a fluorene cardo structure. The polyimides exhibit good optical transparency and have a low absolute thermo-optic coefficient (|dn/dT|).
摘要:
Methods of forming microelectronic structures using multilayer processes are disclosed. The methods comprise the use of a developer-soluble protective layer adjacent the substrate surface in a multilayer stack to protect the substrate during pattern transfer. After etching, the pattern is transferred into the developer-soluble protective layer using a developer instead of etching required by previous methods. Conventional developer-soluble anti-reflective coatings and gap-fill materials can be used to form the protective layer. Custom layers with developer solubility can also be prepared. Microelectronic structures formed by the above processes are also disclosed.
摘要:
Methods of forming microelectronic structures using multilayer processes are disclosed. The methods comprise the use of a developer-soluble protective layer adjacent the substrate surface in a multilayer stack to protect the substrate during pattern transfer. After etching, the pattern is transferred into the developer-soluble protective layer using a developer instead of etching required by previous methods. Conventional developer-soluble anti-reflective coatings and gap-fill materials can be used to form the protective layer. Custom layers with developer solubility can also be prepared. Microelectronic structures formed by the above processes are also disclosed.
摘要:
An exercise rowing machine with power generation includes: a main machine frame; a seat cushion slidably mounted on the main machine frame; a supporting rod mounted on the main machine frame; a holding rod mounted on the supporting rod; a damping device; and a power generation device. The damping device includes: a belt wheel, which is rotatably mounted on the supporting rod and connected with the belt wheel through a traction band; and a pulley block, which is mounted on the main machine frame and connected with the belt wheel through an elastic band. The power generation device includes: an electric generator, which includes an input shaft and is mounted between the main machine frame and the supporting rod; a driving belt, which connects the belt wheel with the input shaft of the electric generator; and a storage battery, which is electrically connected with the electric generator.
摘要:
A rare earth permanent magnet coreless generator set is provided, comprising: a frame, an engine, a generator, an inverter and an output power box, wherein the generator further comprises: a generator holder mounted on the engine; a generator casing mounted on the generator holder; a stator mounted on the generator casing, comprising disc windings and a shell made of polymer covering the disc windings; a first magnetism stopper mounted on an output shaft by a flat key; a second magnetism stopper mounted on the output shaft by the flat key; a plurality of rare earth permanent magnets mounted on the first magnetism stopper and the second magnetism stopper by a permanent magnet clamp and corresponding to the stator. The rare earth permanent magnet coreless generator set generates less heat and has higher power output efficiency.
摘要:
New methods of removing impurities from solvent-based compositions using inorganic particle-embedded filters and an ion exchange process are provided. The methods comprise passing a composition through a filter embedded with inorganic particles to yield a filtered composition. Filters comprising filtration media embedded with inorganic particles and methods of producing the same are also provided.