摘要:
A molecular system that is reversibly switchable between four states includes two or more ends. At least three rotors and at least two stators are located between the ends. Each of the rotors is capable of rotating when under the influence of an electric field having a predetermined strength. The predetermined strength of the electric field for rotating one of the rotors is different than that of the predetermined strength of the electric field for rotating each of the other rotors. One or more conjugated connecting units links at least one of the at least three rotors and at least one of the at least two stators. The rotation of at least one of the at least three rotors switches the molecular system to one of the four states.
摘要:
Classes of molecules are disclosed which can, for example, be used in molecular switches. The classes of molecules include at least three segments—an electronic donor (“D”), a switchable bridge (“B”), and an electronic acceptor (“A”)—chemically connected and linearly arranged (e.g., D-B-A). The electronic donor can be an aromatic ring system with at least one electron donating group covalently attached; an aromatic ring system with an electron withdrawing group covalently attached is usually employed as the electronic acceptor; and the switchable bridge can be a pi system that can be switched on or off using an external electric field.
摘要:
The invention described herein includes a molecular switch, comprising: a donor subunit; an acceptor subunit; and an aromatic bridging subunit comprising one or more bridging groups for bonding the donor subunit to the aromatic bridging subunit and for bonding the acceptor subunit to the aromatic bridging subunit wherein the aromatic bridging subunit is conformable in a manner effective for polarizing and de-polarizing the molecular switch at a low electric field voltage.
摘要:
Methods and apparatus are described for a rewritable disk memory using an electro-optical molecular recording layer. In the manner of nanotechnology, each molecule is an individual multi-position switch having at least two distinct optical characteristic states. Localized electrical field injection is used to switch each molecule to one of at least two bistable position states such that each is representative of a storable data bit.
摘要:
Systems and methods for providing smudge resistant and durable ink-jet images having good optical density are provided. Specifically, a system for printing durable ink-jet ink images can comprise a set of two ink-jet pens, preferably thermal ink-jet pens. The first ink-jet pen contains an ink-jet ink, wherein the ink-jet ink comprises a first liquid vehicle, from 0.5% to 6% by weight of a pigment colorant, and from 0.2% to 15% by weight of an anionic or neutral latex-containing colloidal suspension. The second ink-jet pen contains a fixer composition, wherein the fixer composition comprises effective amounts of second liquid vehicle, and from 0.2% to 15% by weight of a cationic polymer such as poly(vinyl pyridine) salts, polyalkylaminoethyl acrylates, polyalkylaminoethyl methacrylates, poly(vinyl imidazole); or preferably, polyethyleneimines, polybiguanides, and/or polyguanides. When applied to the substrate, upon overprinting or underprinting the fixer composition with respect to the ink-jet ink, a durable and smudge resistant image is formed. A method of the present invention can utilize the system and provide for underprinting or overprinting the fixer composition as desired.
摘要:
An electroluminescent device used as an illuminating source in a scanner. The device includes at least one solid-state electroluminescent element, which has a transparent electrode with a top surface, a radiation generating stack under the transparent electrode, and a second electrode with a bottom surface under the radiation generating stack. Radiation is generated from the radiation generating stack when a selected voltage source is coupled across the electrodes. Most of the radiation generated is emitted either from the top surface or from (the top and the bottom surfaces). When the scanner scans a medium, the emitted radiation is substantially uniform at least across the top surface of the transparent electrode to create a uniform radiation source for illuminating the medium.
摘要:
A composition and method of associating stabilizer functionalities with latex particulates is provided. The composition can comprise a latex particulate configured for inclusion in an ink-jet ink to provide improved humidfastness of an image printed by the ink-jet ink, wherein the latex particulate has a molecular weight from 10,000 Mw to 10,000,000 Mw, and has a particle size from 10 nm to 2 μm; and an image stabilizer configured for improving lightfastness of the image, wherein the image stabilizer is bound to the latex particulate. The method can comprise the steps of coupling a polymerizable monomer with a stabilizing agent reactive with the polymerizable monomer, thereby forming a precursor stabilizer-containing monomer; polymerizing the precursor stabilizer-containing monomer to form a latex particulate; and decoupling the stabilizing agent from the latex particulate.
摘要:
Compositions, systems, and methods for protecting an ink-jet produced image printed on a substrate are provided. The composition can comprise a liquid vehicle and latex particulates dispersed in the liquid vehicle, wherein the latex particulates have a surface dielectric constant from 2.0 to 3.0 at room temperature, and a bulk density from 0.1 g/cm3 less to 0.1 g/cm3 greater than the vehicle density. An alternative composition can comprise a liquid vehicle and latex particulates dispersed in the liquid vehicle, wherein the latex particulates have a reactive surfactant covalently attached thereto.
摘要翻译:提供了用于保护印刷在基板上的喷墨产生图像的组合物,系统和方法。 组合物可以包含分散在液体载体中的液体载体和胶乳颗粒,其中胶乳颗粒在室温下的表面介电常数为2.0至3.0,堆积密度为0.1g / cm 3 小于0.1g / cm 3,大于车辆密度。 替代组合物可以包含分散在液体载体中的液体载体和胶乳颗粒,其中胶乳颗粒具有共价连接到其上的反应性表面活性剂。
摘要:
A composition and method of associating stabilizer functionalities with latex particulates is provided. The composition can comprise a latex particulate configured for inclusion in an ink-jet ink to provide improved humidfastness of an image printed by the ink-jet ink, wherein the latex particulate has a molecular weight from 10,000 Mw to 10,000,000 Mw, and has a particle size from 10 nm to 2 μm; and an image stabilizer configured for improving durability of the image, wherein the image stabilizer is bound to or otherwise associated with the latex particulate. The method can comprise the steps of coupling a polymerizable monomer with a stabilizing agent reactive with the polymerizable monomer, thereby forming a stabilizer precursor-containing monomer; polymerizing the stabilizer-containing monomer to form a latex particulate; and decoupling the stabilizing agent from the latex particulate.