Abstract:
An alternating electric field responsive biomedical composite is disclosed that provides capacitive coupling through the composite. The biomedical composite includes a binder material, a polar material that is substantially dispersed within the binder material, and electrically conductive particles within the binder material. The polar material is responsive to the presence of an alternating electric field, and the electrically conductive particles are not of sufficient concentration to form a conductive network through the composite unless and until the composite becomes overcharged.
Abstract:
A method of forming an electrically conductive composite is disclosed that includes the steps of providing a first dielectric material and a second conductive material that is substantially dispersed within the first dielectric material; and applying an electric field through at least a portion of the combined first dielectric material and second conductive material such that the second conductive material undergoes electrophoresis and forms at least one electrically conductive path through the electrically conductive composite along the direction of the applied electric field.
Abstract:
A biomedical sensor is disclosed that includes a conductive material for coupling to monitoring equipment, and a composite. The composite includes a polymeric material and a polar material that is substantially dispersed within the polymeric material. The composite has a first side that is coupled to the conductive material and has a second side that is positionable with respect to a subject to be monitored. The polar material exhibits molecular compatibility with the polymeric material such that the polar material neither blooms to a surface of the polymeric material nor crystallizes within the polymeric material.
Abstract:
A tamper resistant label having two layers. The first layer is a patterned layer in direct or indirect contact with an adhesive layer and the second layer is a protective film with visible indicia applied over the patterned layer. A portion of the protective layer with visible indicia has no adhesion to the patterned layer which allows the protective film to readily separate from and destruct portions of the patterned layer when the film is removed.
Abstract:
A silicone release laminate formed by a support with a silicone release layer. A separate pressure-sensitive silicone adhesive release layer may be on the same side of the support as the release layer, or on opposite sides of the support. The force required to separate the adhesive from the release layer is less than about 100 grams (3.3 oz.) per inch, and preferably less than 50 grams (1.7 oz.) per inch.The release layer is formed from one or more organopolysiloxanes having a viscosity below 1000 centipoises, and preferably below about 600 centipoises, with a high degree of cross-linking. The organopolysiloxanes may be produced directly by hydrolysis of organo-substituted halosiloxanes and depolymerization; or by hydration of higher molecular weight organopolysiloxanes and heat treatment to produce lower weight constituents.
Abstract:
A non-aqueous isotropic electrically conductive signal receptive composite is disclosed comprising a continuous conductive material, with a top surface and a bottom surface with both surfaces substantially covered by a dielectric polymer material with a polar material within the dielectric polymer.
Abstract:
An alternating electric field responsive biomedical composite is disclosed that provides capacitive coupling through the composite. The biomedical composite includes a binder material, a polar material that is substantially dispersed within the binder material, and electrically conductive particles within the binder material. The polar material is responsive to the presence of an alternating electric field, and the electrically conductive particles are not of sufficient concentration to form a conductive network through the composite unless and until the composite becomes overcharged.
Abstract:
An electrically conductive composite is disclosed that includes a dielectric material having a first side and a second side, conductive particles within the dielectric material layer, and a discontinuous layer of a conductive material on a first side of the dielectric layer. The conductive particles are aligned to form a plurality of conductive paths from the first side to the second side of the dielectric material, and each of the conductive paths is formed of at least a plurality of conductive particles. The discontinuous layer includes a plurality of non-mutually connected portions that cover portions of, but not all of, the first side of the dielectric material such that exposed portions of the underlying first side of the dielectric material remain exposed through the discontinuous layer, yet the discontinuous layer facilitates the electronic coupling together of a plurality of the conductive paths from the first side to the second side of the dielectric material.
Abstract:
A method of forming an electrically conductive composite is disclosed that includes the steps of providing a first dielectric material and a second conductive material that is substantially dispersed within the first dielectric material; and applying an electric field through at least a portion of the combined first dielectric material and second conductive material such that the second conductive material undergoes electrophoresis and forms at least one electrically conductive path through the electrically conductive composite along the direction of the applied electric field.
Abstract:
A method is disclosed of detecting a bioelectrical signal from a subject. The method includes the steps of applying a composite material to a subject wherein the composite material includes a polymeric material and a polar material that is substantially dispersed within the polymeric material; coupling monitoring equipment to the second side of the composite material; permitting the polar material within the polymeric material to respond to the bioelectrical signal within the subject; and detecting a responsive electrical signal from the composite material that is representative of the bioelectrical signal. The polar material exhibits molecular compatibility with the polymeric material such that the polar material neither blooms to a surface of the polymeric material nor crystallizes within the polymeric material, and the composite material has a first side for contacting the subject and a second side.