摘要:
Bioactive coatings that are stabilized against inactivation by weathering are provided including a base associated with a chemically modified enzyme, and, optionally a first polyoxyethylene present in the base and independent of the enzyme. The coatings are optionally overlayered onto a substrate to form an active coating facilitating the removal of organic stains or organic material from food, insects, or the environment.
摘要:
An omnidirectional reflector that reflects a band of electromagnetic radiation of less than 100 nanometers when viewed from angles between 0 and 45 degrees is provided. The omnidirectional reflector includes a multilayer stack having a plurality of layers of high index of refraction material and a plurality of layers of low index of refraction material. In addition, the plurality of high index of refraction material layers and low index of refraction material layers are alternately stacked on top of or across each other and provide a non-periodic layered structure.
摘要:
A process for manufacturing a nanocomposite thermoelectric material having a plurality of nanoparticle inclusions. The process includes determining a material composition to be investigated for the nanocomposite thermoelectric material, the material composition including a conductive bulk material and a nanoparticle material. In addition, a range of surface roughness values for the insulating nanoparticle material that can be obtained using current state of the art manufacturing techniques is determined. Thereafter, a plurality of Seebeck coefficients, electrical resistivity values, thermal conductivity values and figure of merit values as a function of the range of nanoparticle material surface roughness values is calculated. Based on these calculated values, a nanocomposite thermoelectric material composition or ranges of compositions is/are selected and manufactured.
摘要:
A method for producing a multi-layer photonic structure having at least one group of alternating layers of high index material and low index material may include, determining a characteristic property function for the multi-layer photonic structure, determining a thickness multiplier for the at least one group of alternating layers based on a comparison of the characteristic property function to a target profile, adjusting the characteristic property function with the determined thickness multiplier, and comparing an adjusted characteristic property function to the target profile, wherein, when the adjusted characteristic property function does not approximate the target profile, at least one additional group of layers is added to the multi-layer photonic structure.
摘要:
Protein-polymer compositions and processes for their production are provided where the compositions have improved resistance to ultraviolet light induced weathering and associated loss of enzyme activity. The incorporation of both a sterically hindered amine and an ultraviolet light absorber at a concentration of at least 5% by weight produces a curable or cured composition with UV stabilized enzyme activity that can be used as a bioactive coating with improved stain removal properties.
摘要:
A process for manufacturing stand-alone multilayer thin films is provided. The process includes providing a substrate, depositing a sacrificial layer onto the substrate and the depositing multilayer thin film onto the sacrificial layer. Thereafter, the substrate, sacrificial layer and thin film structure are exposed to chemical solutions. The chemical solution selectively reacts with the sacrificial layer to remove the sacrificial layer, thereby affording for an intact multilayer stand-alone thin film to separate from the substrate. The color and optical properties of the multilayer thin film are not affected by the removal of the sacrificial layer.
摘要:
A process for stabilizing a bioactive composition includes forming hydrogel matrix pores around protein molecules and reducing a water content within the hydrogel matrix pores while keeping the protein molecules biologically active.
摘要:
A process for producing particles from a thin film is provided. The process includes grinding the thin film using granules that afford for the particles to maintain a structure and/or one or more properties of the thin film. In addition, the process provides for a high recovery percentage of the source material.
摘要:
In one embodiment, the optical lock system may include an electronic control unit, a lock housing including a lock chamber, and an optical key including a multilayer photonic structure. The multilayer photonic structure may produce a unique intensity profile and includes a plurality of coating layers of high index dielectric material and a plurality of coating layers of low index dielectric. A light source may transmit a reference light to the multilayer photonic structure when the optical key is disposed within the lock chamber. A photo detector may receive an interaction light from the multilayer photonic structure and may transmit the unique intensity profile to the electronic control unit which may execute machine readable instructions to: compare the unique intensity profile to an electronic master; and cause the lock actuator to transition from a first state to a second state when the unique intensity profile corresponds to the electronic master.
摘要:
A process for altering the thermoelectric properties of an electrically conductive material is provided. The process includes providing an electrically conducting material and a substrate. The electrically conducting material is brought into contact with the substrate. A thermal gradient can be applied to the electrically conducting material and a voltage applied to the substrate. In this manner, the electrical conductivity, the thermoelectric power and/or the thermal conductivity of the electrically conductive material can be altered and the figure of merit increased.