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Debasish Banerjee, Ann Arbor US

Debasish Banerjee, Ann Arbor, MI US

Patent application numberDescriptionPublished
20090046368Narrow Band Omnidirectional Reflectors And Their Use As Structural Colors - Disclosed is a multilayer structure wherein a first layer of a first material having an outer surface and a refracted index between 2 and 4 extends across an outer surface of a second layer having a refractive index between 1 and 3. The multilayer stack has a reflective band of less than 200 nanometers when viewed from angles between 0° and 80° and can be used to reflect a narrow range of electromagnetic radiation in the ultraviolet, visible and infrared spectrum ranges. In some instances, the reflection band of the multilayer structure is less than 100 nanometers. In addition, the multilayer structure can have a quantity defined as a range to mid-range ratio percentage of less than 2%.02-19-2009
20090105988Method of Producing Thermoelectric Material - A process for determining an optimum range of compositions for a nanocomposite thermoelectric material system, within which the material may exhibit generally high figure of merit values, is provided. The process is performed for a nanocomposite thermoelectric material system having a first component and a second component made from nanoparticles. The process includes selecting a plurality of material compositions for a nanocomposite thermoelectric material system to be investigated and calculating a thermal conductivity value and calculating an electrical resistance value for each material composition selected. In addition, at least one Seebeck coefficient is determined for the material compositions selected. Then, a plurality of figure of merit values are calculated using the calculated plurality of thermal conductivity values, the calculated plurality of electrical resistivity values and the determined at least one Seebeck coefficient. After the plurality of figure of merit values are calculated, an optimum compositional range can be determined within which the largest ZT values may be exhibited.04-23-2009
20090136741NANOSCOPICALLY MODIFIED SUPERHYDROPHOBIC COATING - A process of forming a clear coat including the steps of providing hydrophobic nanoparticles by chemically modifying the surface of the nanoparticles, dispersing the hydrophobic nanoparticles in a solvent, combining the dispersed nanoparticles in the solvent with a clear coat material, and mixing the dispersed nanoparticles in a solvent with the clear coat material forming a clear coat having a transparency of at least 50 percent.05-28-2009
20090153953Multi-Layer Photonic Structures Having Omni-Directional Reflectivity and Coatings Incorporating The Same - A multi-layer photonic structure may include alternating layers of high index material and low index material having a form [H(LH)06-18-2009
20090161220Narrow Band Omnidirectional Reflectors And Their Use As Structural Colors - Disclosed is a multilayer structure wherein a first layer of a first material having an outer surface and a refracted index between 2 and 4 extends across an outer surface of a second layer having a refractive index between 1 and 3. The multilayer stack has a reflective band of less than 200 nanometers when viewed from angles between 0° and 80° and can be used to reflect a narrow range of electromagnetic radiation in the ultraviolet, visible and infrared spectrum ranges. In some instances, the reflection band of the multilayer structure is less than 100 nanometers. In addition, the multilayer structure can have a quantity defined as a range to mid-range ratio percentage of less than 2%.06-25-2009
20100208338Multilayer Photonic Structures - A multilayer photonic structure may include a plurality of coating layers of high index dielectric material of index of refraction n08-19-2010
20100209593Methods For Producing Omni-Directional Multi-Layer Photonic Structures - 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.08-19-2010
20100290109UV-REFLECTIVE STRUCTURAL COLOR - The present invention discloses a non-quarter wave multilayer structure having a plurality of alternating low index of refraction material stacks and high index of refraction material stacks. The plurality of alternating stacks can reflect electromagnetic radiation in the ultraviolet region and a narrow band of electromagnetic radiation in the visible region. The non-quarter wave multilayer structure, i.e. n11-18-2010
20110014366STRUCTURAL COLORS HAVING UV REFLECTANCE VIA SPRAY LAYER-BY-LAYER PROCESSING - A process for fabricating a structural color having ultraviolet reflectance is provided. The process includes providing an atomizing nozzle, a first nanoparticle solution and a second nanoparticle solution. The atomizing nozzle is used to spray a plurality of first nanoparticle solution layers, the plurality of first nanoparticle layers forming a low index of refraction stack. In some instances, a polymer solution can be sprayed before and/or after the spraying of each first nanoparticle solution layer. The atomizing nozzle is also used to spray a plurality of second nanoparticle solution layers, the plurality of second nanoparticle layers form a high index of refraction stack. Similar to the first nanoparticle solution layers, a polymer solution can be sprayed before and/or after the spraying of each second nanoparticle solution layer.01-20-2011
20110091658OMNIDIRECTIONAL STRUCTURAL COLOR PAINT - A paint composition is disclosed, the paint having a binder and an omnidirectional structural color pigment dispersed throughout the binder. The omnidirectional structural color pigment can be made from a plurality of flakes that have a multilayer structure, the pigment and the paint having a reflection band of less than 200 nanometers when viewed from angles between 0 to 45 degrees.04-21-2011
20110128616OMNIDIRECTIONAL REFLECTOR - An omnidirectional structural color (OSC) having a non-periodic layered structure. The OSC can include a multilayer stack that has an outer surface and at least two layers. The at least two layers can include at least one first index of refraction material layer A06-02-2011
20110134515OMNIDIRECTIONAL UV-IR REFLECTOR - The present invention provides an omnidirectional ultraviolet (UV)-infrared (IR) reflector. The omnidirectional UV-IR reflector includes a multilayer stack having at least three layers, the at least three layers having at least one first index of refraction material A1 and at least one second index of refraction layer B1. The at least one first index of refraction material layer and the at least one second index of refraction material layer can be alternately stacked on top of each other to provide the at least three layers. In addition, the at least one first index of refraction material layer and the at least one second index of refraction material layer each have a predefined thickness of d06-09-2011

Patent applications by Debasish Banerjee, Ann Arbor, MI US