Abstract:
A sensor (101) with a rare earth metal sensing layer (150) and a protective barrier (100) on a noble metal filter (160) convering the sensing layer.
Abstract:
A gas detector (54) and process for detecting a fluorine-containing species in a gas containing same, e.g., an effluent of a semiconductor processing tool undergoing etch cleaning with HF, NF3, etc. The detector in a preferred structural arrangement employs a microelectromechanical system (MEMS)-based device structure and/or a free-standing metal element (8) that functions as a sensing component and optionally as a heat source when elevated temperature sensing is required. The free-standing metal element can be fabricated directly onto a standard chip carrier/device package (6) so that the package becomes a platform of the detector.
Abstract:
Carbonaceous materials are described, having utility for fluid storage/dispensing and desulfurization applications. The carbonaceous material in one implementation is a nanoporous carbon composite having porosity that is at least partially filled with material imparting to the composite an enhanced character with respect to characteristics selected from the group consisting of hardness, wear-resistance and toughness, as compared with the nanoporous carbon alone. Another implementation utilizes porous carbon material as a storage medium for chlorine gas. A further implementation utilizes porous carbon material as a hydrogen storage medium, e.g., for hydrogen fuel cells. In another implementation, porous carbon material is employed as a sorbent medium in a fluid storage and dispensing system, in an arrangement of multiple porous carbon articles, and positional stabilization structure is employed to restrain the arrangement against movement. Infrared emitter devices are described, which utilize carbon adsorbent to store silane for reaction with oxygen in a controlled manner. An arrangement in which carbon adsorbent is desorbed of residual fluid by resistive and/or inductive heating of the adsorbent is described. Also described is a method of increasing the loading capacity of a porous carbon adsorbent, by contacting of the carbon adsorbent with a swelling agent, followed by contacting of the carbon adsorbent with a pressurized gaseous penetration agent, and by removal of the swelling agent and penetration agent.
Abstract:
A gas detector (54) and process for detecting a fluorine-containing species in a gas containing same, e.g., an effluent of a semiconductor processing tool undergoing etch cleaning with HF, NF3, etc. The detector in a preferred structural arrangement employs a microelectromechanical system (MEMS)-based device structure and/or a free-standing metal element (8) that functions as a sensing component and optionally as a heat source when elevated temperature sensing is required. The free-standing metal element can be fabricated directly onto a standard chip carrier/device package (6) so that the package becomes a platform of the detector.
Abstract:
A sensor with a protective barrier on a noble metal filter. The barrier protects the noble metal filter from catalytic poisons and any overdose of target particles. The barrier may be a polymer or non-polymer.
Abstract:
A gas detector and process for detecting a fluorine-containing species in a gas containing same, e.g., an effluent of a semiconductor processing tool undergoing etch cleaning with HF, NF3, etc. The detector in a preferred structural arrangement employs a microelectromechanical system (MEMS)-based device structure and/or a free-standing metal element that functions as a sensing component and optionally as a heat source when elevated temperature sensing is required. The free-standing metal element can be fabricated directly onto a standard chip carrier/device package so that the package becomes a platform of the detector.
Abstract:
A gas detector and process for detecting a fluorine-containing species in a gas containing same, e.g., an effluent of a semiconductor processing tool undergoing etch cleaning with HF, NF3, etc. The detector in a preferred structural arrangement employs a microelectromechanical system (MEMS)-based device structure and/or a free-standing metal element that functions as a sensing component and optionally as a heat source when elevated temperature sensing is required. The free-standing metal element can be fabricated directly onto a standard chip carrier/device package so that the package becomes a platform of the detector.
Abstract:
Carbonaceous materials are described, having utility for fluid storage/dispensing. The carbonaceous material in one implementation is a nanoporous carbon composite having porosity that is at least partially filled with material imparting to the composite an enhanced character. Another implementation utilizes porous carbon material as a storage medium for chlorine gas. A further implementation utilizes porous carbon material as a hydrogen storage mediu e g, for hydrogen fuel cells. In another implementation, porous carbon material is employed as a sorbent medium in a fluid storage and dispensing system, in an arrangement of multiple porous carbon articles, and positional stabilization structure is employed to restrain the arrangement against movement. An arrangement in which carbon adsorbent is desorbed of residual fluid by resistive and/or inductive heating of the adsorbent is described.