Abstract:
A composition is provided that includes a polymer binder, and one or more classes of particle constituents. At least one class of particle constituents includes semiconductive particles that individually have a band gap that is no greater than 2 eV. As VSD material, the composition is (i) dielectric in absence of a voltage that exceeds a characteristic voltage level, and (ii) conductive with application of said voltage that exceeds the characteristic voltage level.
Abstract:
One or more embodiments provide for a composition that includes (i) organic material that is conductive or semi-conductive, and (ii) conductor and/or semiconductor particles other than the organic material. The organic material and the conductor and/or semiconductor particles are combined to provide the composition with a characteristic of being (i) dielectric in absence of a voltage that exceeds a characteristic voltage level, and (ii) conductive with application of the voltage exceeding the characteristic voltage level.
Abstract:
Una composición que comprende:un aglutinante;material orgánico que es conductor o semiconductor, en el que dicho material orgánico es soluble en un disolvente oestá dispersado dentro del aglutinante a escala nanoscópica; ypartículas conductoras y/o semiconductoras distintas de dicho material orgánico y distribuidas uniformemente dentrodel aglutinante;en el que se combinan dicho material orgánico y dichas partículas conductoras y/o semiconductoras paraproporcionar a dicha composición la característica de ser: (i) dieléctrica en ausencia de un voltaje superiora un nivel de voltaje característico; y (ii) conductora si la aplicación de dicho voltaje es superior almencionado nivel de voltaje característico;en el que el material orgánico incluye nanotubos de carbono con paredes únicas y/o múltiples.
Abstract:
FORMULATIONS FOR VOLTAGE SWITCHABLE DIELECTRIC MATERIALS (100) INCLUDE TWO OR MORE DIFFERENT TYPES OF SEMI CONDUCTIVE 'MATERIALS UNIFORMLY DISPERSED WITHIN A DIELECTRIC MATRIX MATERIAL (110). THE SEMICONDUCTIVE MATERIALS ARE SELECTED TO HAVE DIFFERENT BANDGAP ENERGIES IN ORDER TO PROVIDE THE VOLTAGE SWITCHABLE DIELECTRIC MATERIAL WITH A STEPPED VOLTAGE RESPONSE. THE SEMICONDUCTIVE MATERIALS CAN COMPRISE INORGANIC PARTICLES, ORGANIC PARTICLES, OR AN ORGANIC MATERIAL THAT IS SOLUBLE IN, OR MISCIBLE WITH, THE DIELECTRIC MATRIX MATERIAL. FORMULATIONS OPTIONALLY CAN ALSO INCLUDE ELECTRICALLY CONDUCTIVE MATERIALS. AT LEAST ONE OF THE CONDUCTIVE OR SEMICONDUCTIVE MATERIALS IN A FORMULATION CAN COMPRISE PARTICLES (120, 130, 140, 150, 160) CHARACTERIZED BY AN ASPECT RATIO OF AT LEAST 3 OR GREATER.
Abstract:
A COMPOSITION OF VOLTAGE SWITCHABLE DIELECTRIC (VSD) MATERIAL THAT UTILIZES SEMI- CONDUCTIVE OR CONDUCTIVE MATERIALS THAT HAVE A RELATIVELY HIGH ASPECT RATIO FOR PURPOSE OF ENHANCING MECHANICAL AND ELECTRICAL CHARACTERISTICS OF THE VSD MATERIAL.