Mike Myers | University of Houston (original) (raw)
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Papers by Mike Myers
We are developing focal-plane arrays of superconducting bolometers with up to 1,000 elements. The... more We are developing focal-plane arrays of superconducting bolometers with up to 1,000 elements. The sensors are voltage-biased Transition-Edge Sensors, and they are read out with SQUID amplifiers. We are developing several pixel architectures, each of which has advantages depending on the type of observation. We are developing a planar-antenna coupled bolometer, which is suitable for polarization measurements of the CMB. Multichroic pixels are achieved by using RF-frequency multiplexers between the antenna and bolometer. These frequency multiplexers are built from superconducting microstrip transmission lines and therefore will have low loss. A wide range of bandwidths is possible with this technology with resolving powers of several to 100 or more. We are also developing horn-coupled spiderweb absorber bolometers and bare filled absorber-coupled arrays. We have developed fabrication methods for building large arrays of absorber-coupled bolometers with high yield. The bolometers use silicon-nitride suspensions and micromesh absorbers. Arrays of 1,000 or more bolometers will be practical using these new methods. We will present results from prototype bolometers built with this fabrication process.
Bioresource Technology, 1995
Garden waste was composted over a number of weeks in a windrow, and turned regularly to maintain ... more Garden waste was composted over a number of weeks in a windrow, and turned regularly to maintain aerobic conditions. The physical parameters of the composting material were measured, and at 1, 2, 3 and 4 weeks of processing samples were removed and incorporated into growth media. Ryegrass was grown over 1 year and harvested regularly for measurement of dry matter and N content. In addition, compost samples were removed and the microfauna and total microbial biomass quantified. It was shown that the younger composts (1 and 2 week processing) gave higher dry matter and N yields. The young compost (1 week) contained significantly higher protozoan (especially ciliate) biomass than the older (4 week) compost, over the entire experimental period.
We are developing focal-plane arrays of superconducting bolometers with up to 1,000 elements. The... more We are developing focal-plane arrays of superconducting bolometers with up to 1,000 elements. The sensors are voltage-biased Transition-Edge Sensors, and they are read out with SQUID amplifiers. We are developing several pixel architectures, each of which has advantages depending on the type of observation. We are developing a planar-antenna coupled bolometer, which is suitable for polarization measurements of the CMB. Multichroic pixels are achieved by using RF-frequency multiplexers between the antenna and bolometer. These frequency multiplexers are built from superconducting microstrip transmission lines and therefore will have low loss. A wide range of bandwidths is possible with this technology with resolving powers of several to 100 or more. We are also developing horn-coupled spiderweb absorber bolometers and bare filled absorber-coupled arrays. We have developed fabrication methods for building large arrays of absorber-coupled bolometers with high yield. The bolometers use silicon-nitride suspensions and micromesh absorbers. Arrays of 1,000 or more bolometers will be practical using these new methods. We will present results from prototype bolometers built with this fabrication process.
Bioresource Technology, 1995
Garden waste was composted over a number of weeks in a windrow, and turned regularly to maintain ... more Garden waste was composted over a number of weeks in a windrow, and turned regularly to maintain aerobic conditions. The physical parameters of the composting material were measured, and at 1, 2, 3 and 4 weeks of processing samples were removed and incorporated into growth media. Ryegrass was grown over 1 year and harvested regularly for measurement of dry matter and N content. In addition, compost samples were removed and the microfauna and total microbial biomass quantified. It was shown that the younger composts (1 and 2 week processing) gave higher dry matter and N yields. The young compost (1 week) contained significantly higher protozoan (especially ciliate) biomass than the older (4 week) compost, over the entire experimental period.