92 results about "Photo responsive" patented technology

An electron emitter assembly and a method for generating electron beams are provided. The electron emitter assembly includes a light source configured to emit light. The electron emitter assembly further includes a photo-responsive device operably coupled to an electron emitter device. The photo-responsive device induces the electron emitter device to emit electrons in response to receiving the light. Finally, the electron emitter assembly includes an anode receiving the emitted electrons from the electron emitter device.

A polymer-based field effect transistor photosensitive to incident light, which may enhance the transistor's characteristics and controlling parameters of the transistor state. The transistor is comprised of a metal-insulator-semiconductor structure with the insulating and semiconducting layers made of a polymeric media. The semiconducting polymer which also is photoconducting, forms the charge transport layer between the source and drain. The transistor exhibits large photosensitivity indicated by the sizable changes in the drain-source current, by a factor of 100–1000 even at low levels of light with illumination of approximately 1 mlux. The photosensitivity of the transistor is further enhanced with introduction of dilute quantity electron acceptor moieties in the semiconducting polymer matrix. Several applications of the light-responsive polymer-transistor are disclosed, such as use as a logic element and as a backbone of an image sensor.

Provided is a method of fabricating an organic light emitting device using a solution process. The method includes forming an electrode on a lower substrate; depositing an organic active material solution containing at least one photoreactive material on the electrode to form an organic active material layer; and radiating light onto the organic active material layer so that a characteristic of the light varies according to the depth of the organic active material layer in order to gradually vary a molecular orientation structure in the organic active material layer according to the depths, thereby resulting in a carrier mobility gradient according to the depths of the organic active material layer.

A photo-responsive UV pressure-sensitive adhesive and a preparation method of same. The pressure-sensitive adhesive is composed of four parts including 30-70% of an acrylate-type copolymer, 3-21% of a photo-responsive monomer, 21-63% of a photo-polymerization monomer, and 0.6-1.4% of a photoinitiator. The pressure-sensitive adhesive is prepared through the steps of: dissolving the polymer in the photo-polymerization monomer, adding the photo-responsive monomer and the photoinitiator and uniformly mixing the components; and irradiating the mixture by means of ultraviolet light of which the wavelength [lambda] is more than 390 nm and is less than 450 nm to cure the mixture to prepare the pressure-sensitive adhesive, and meanwhile, performing mask exposure to form patterns. The pressure-sensitive adhesive is reduced in stripping strength after being irradiated by means of ultraviolet light of which the wavelength [lambda] is more than 300 nm and is less than 360 nm, so that the pressure-sensitive adhesive is easy to strip. The stripping strength is recovered after the pressure-sensitive adhesive is irradiated by means of ultraviolet light of which the wavelength [lambda] is more than 200 nm and is less than 270 nm. The pressure-sensitive adhesive, when being used, has high stripping strength and good adhesion performance. When the pressure-sensitive adhesive is used or is mis-adhered, stripping strength of the pressure-sensitive adhesive can be reduced just by irradiating the pressure-sensitive adhesive by light, so that the pressure-sensitive adhesive is easy to strip. The stripping strength is recovered when the stripped pressure-sensitive adhesive is irradiated by light, and the pressure-sensitive adhesive can be used continuously. The pressure-sensitive adhesive is energy-saving, environment-protective and can be used repeatedly.

The invention relates to a tuneable phase shifter and / or attenuator comprising a waveguide having a channel and a piece of photo-responsive material (18) disposed within the waveguide along an internal wall of said channel, a light source disposed outside the waveguide to emit light through an aperture (30) of said internal wall to impinge on at least part of an outside surface of said piece of photo-responsive material (18).

A system comprises an electro-wetting subsystem, a transfer subsystem, an imaging member, and an inking subsystem. The electro-wetting subsystem comprises a photo-responsive photoreceptor, a charging mechanism, an image definition material reservoir, a charge erase mechanism, and an exposure subsystem, such as a light source and rotating polygon forming a raster output scanner (ROS) disposed for exposure of the photoreceptor through the image definition material reservoir. The imaging member comprises a reimageable surface having certain properties, such as having a low surface energy to promote ink release onto a substrate. In operation, the photoreceptor is charged areawise. An exposure pattern is formed by the exposure subsystem on the surface of the charged photoreceptor, which is developed with image definition material. The image definition material pattern is transferred to the reimageable surface. The pattern is developed with ink. The inked image may be transferred to a substrate.

Methods, systems and apparatus for photo-processing of fluids, particularly complex fluids, such as blood products, pharmaceuticals, injectables and vaccines, are provided. The disclosed methods and systems employ non-laser light source(s) to generate monochromatic light energy, preferably in the range of 260 nm to 310 nm, for fluid treatment. Advantageous processing regimens and / or adjunct additives and / or agents may also be used to achieve desired and / or enhanced results, e.g., inactivation of pathogens, bacteria and / or viruses, modulation of immune response, and / or leukoreduction. Particularly preferred embodiments include specific wavelengths, novel temperature control systems and geometric / structural arrangements that provide enhanced processing results and / or efficiencies. The disclosed methods, systems and apparatus achieve desirable results in a broad range of diagnostic, therapeutic and treatment applications, and generally provide enhanced operating efficiencies and / or processing results in application modalities that employ a broad range of photo-activated and / or photo-responsive materials and / or compounds.

The present invention relates to a photo-responsive layer and layer assembly which can be used for controlling a flow of liquid for example in a water-purification device. The photo-responsive layer according to the invention comprises a first domain comprising a first material comprising molecules having a photo-responsive moiety, wherein the first domain of the photo-responsive layer is capable of undergoing a reversible geometrical change when said photo-responsive moiety is exposed to photo-activating illumination, such as UV-radiation. The photo-responsive layer is useful in UV controlled membranes e.g. for water purification.