3M Innovative Properties Company

Nelson B O'Bryan

Joel S Peiffer

John C Schultz

Andrew John Ouderkirk

John Allen Wheatley

Michael S Wendland

Neal A Rakow

Stefan H Gryska

Robert R Kieschke

Cameron T Murray

Moses Mekala David

Robert Steven Clough

Fuming B Li

Guoping Mao

Tzu-Chen Lee

Shichun Qu

Applicant discloses a sensing element for sensing an organic chemical analyte, comprising a first electrode and a second electrode, and a microporous, hydrophobic, analyte-responsive dielectric material disposed at least in proximity to the first and second electrodes. The analyte-responsive dielectric material may be a polymer of intrinsic microporosity. An electrical property of the sensing element, such as capacitance, can be monitored in order to sense an organic chemical analyte.

Organic chemical sensor comprising microporous polymer, and method of use

Applicant discloses a sensing element for sensing an organic chemical analyte, comprising a first electrode and a second electrode, and a microporous, hydrophobic, analyte-responsive dielectric material disposed at least in proximity to the first and second electrodes. The analyte-responsive dielectric material may be an amorphous random covalent network comprising a mean pore size of less than about 10 nm and a porosity of at least about 20%. An electrical property of the sensing element, such as capacitance, can be monitored in order to sense an organic chemical analyte.

Organic chemical sensor comprising plasma-deposited microporous layer, and method of making and using

An illumination assembly includes a compliant substrate comprising a first and second electrically conductive foil separated by an electrically insulating layer. The insulating layer includes a polymer material loaded with particles that enhance thermal conductivity of the insulating layer. A plurality of LED dies are disposed on the first conductive foil.

LED illumination assembly with compliant foil construction

Illumination assemblies include a substrate having a first and second electrically conductive layer separated by an electrically insulating layer. The insulating layer includes a polymer material loaded with thermally conductive particles. At least a portion of the thermally conductive particles simultaneously contact both the first and second electrically conductive layers. A plurality of light sources such as LEDs or other miniature light sources are preferably disposed on the first conductive layer.

Illumination assembly with enhanced thermal conductivity

A dielectric composite material containing a toughened benzocyclobutene resin and at least about 50% by weight of an inorganic filler. Also electronic packages having at least one conductive layer and at least one layer of the dielectric composite material. The dielectric composite material can have a dielectric constant less than about 3.5, and a dielectric loss of less than about 0.004.

Dielectric composite material

A passive electrical article comprising (a) a first self-supporting substrate having two opposing major surfaces, (b) a second self-supporting substrate having two opposing major surfaces, and (c) an electrically insulating or electrically conducting layer comprising a polymer and having a thickness ranging from about 0.5 to about 10 &mgr;m between the first and second substrate, wherein a major surface of the first substrate in contact with the layer and a major surface of the second substrate in contact with the layer have an average surface roughness ranging from about 10 to about 300 nm and wherein a force required to separate the first and second substrates of the passive electrical article at a 90 degree peel angle is greater than about 3 pounds/inch (about 0.5 kN/m), a printed wiring board or a flexible circuit comprising the passive electrical article, an electrical device comprising the printed wiring board or the flexible circuit comprising the passive electrical article, and a method of manufacturing the passive electrical article.

Passive electrical article, circuit articles thereof, and circuit articles comprising a passive electrical article

An insulating layer in a field effect transistor is formed of superfine ceramic particles dispersed in a polymeric matrix. The characteristics of the insulating layer can be changed by varying the mix of ceramic particles and matrix components. Appropriate selection of components can provide a high dielectric constant material which is not subject to pinholes, has a high voltage breakdown and is chemically resistant. The material can be applied at relatively low processing temperatures, using a wide range of coating techniques, and is highly suited for use with polymeric substrates.

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Tamworth, NH, United States of America

Nelson B O'Bryan