Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Konrad Colbow"'
Autor:
Bijan K. Miremadi, Konrad Colbow
Publikováno v:
Sensors and Actuators B: Chemical. 46:30-34
Single layer carbon film has been produced to fabricate a highly selective hydrogen sensor by depositing a partially crystalline carbon film from a single layer suspension onto an alumina substrate. The deposited carbon film, which has a hexagonal-tu
Publikováno v:
Review of Scientific Instruments. 68:3898-3903
A highly sensitive gas sensor for detection and analytical identification of hazardous gases was developed, by depositing partially crystalline powder from an aqueous suspension of CdS powder on an alumina substrate. When the deposited layers were pr
Publikováno v:
Journal of Applied Physics. 82:2636-2639
Molybdenum disulfide (MoS2) has been used in industrial applications as a dry lubricant. Although this material initially improves anti-wear properties, as surfaces move against each other the lubricating particles tend to spread out from the asperit
Autor:
Jianping Zhang, Konrad Colbow
Publikováno v:
Sensors and Actuators B: Chemical. 40:47-52
We have investigated silver clusters on SnO2 thin-film surfaces by scanning electron microscopy (SEM), Auger electron spectroscopy (AES) and X-ray diffraction (XRD). These clusters act as catalytic activators on SnO2 gas sensors and improve sensor pe
Publikováno v:
Canadian Journal of Chemistry. 75:465-468
A lithium aluminate – MgO catalyst has been found to convert methane to ethylene with a high selectivity. The rate of conversion increased when a MoO3 co-catalyst was used to remove the poisoning products. It is shown that for optimum conversion an
Publikováno v:
Applied Physics A: Materials Science & Processing. 63:271-275
Publikováno v:
Applied Physics A Materials Science & Processing. 62:39-42
A simplified analogue to an Ion-Sensitive Field-Effect Transistor (ISFET) was tested in the presence of ions. The gate electrode in an ISFET is an aqueous solution, unlike in a Metal-Oxide Field-Effect Transistor (MOSFET) where the gate is a metal. A
Autor:
Konrad Colbow, Oliver Schilling
Publikováno v:
Sensors and Actuators B: Chemical. 21:151-157
Vanadiium pentoxide is generally a non-stoichiometric material, which is known for its catalytic properties in oxidation reactions. As it is an electric conductor when oxygen vacancies are present, the purpose of this investigation is to determine th
Publikováno v:
Sensors and Actuators B: Chemical. 21:1-4
The gas sensitivity of chromium oxide, a semiconductor metal oxide, to hydrogen in air and to oxygen in hydrogen is presented and the operation principle is described. It is shown that when this oxide is doped Pd promoter, it has high sensitivity to
Publikováno v:
Physical Review B. 48:9130-9133
We observed fractal clusters aggregated on tin oxide film. These clusters have remarkable scaling and universality properties. The fractal dimension of these two-dimensional clusters is in excellent agreement with the theoretical value of 1.70 predic