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Papers by Steve Riemer
Effect of Magnesium and Polyamines on the Binding of Proflavine to T2 DNA, 1978
Some Aspects of Multiphoton Circular Dichroism, 1995
Some Aspects of Multiphoton Circular Dichroism, 1995
Mining, Metallurgy & Exploration, 1984
Th e relative sign ificance of corrosive and erosive wear in m agn etic taconite grinding is exam... more Th e relative sign ificance of corrosive and erosive wear in m agn etic taconite grinding is examined. Th e infl uence of different typ es of aeration (nitrogen, air, and oxygen) on ball wear was established for mild steel and high carbon low alloy steel balls. Ball wear data from dry and wet grinding tests are compared with those obtained in th e presence of an organic solvent that does not promote electrochem ical corrosion. Marked ball grinding tests and electrochem ical m easurements inooloing ball mat erial and magnetit e electrodes Indicate that contribution from oxygen toward wear (corrosive wear) is relatively small, and abrasive wear appears to be significant. Rheological properties ofth e slurry appear to have an important bearing on th e abrasive wear ofgrinding balls.
Journal of The Electrochemical Society, 2016
An external applied magnetic field during electrodeposition can alter mass-transport and deposit ... more An external applied magnetic field during electrodeposition can alter mass-transport and deposit morphology [1,2]. The effect of a magnetic field on mass transport, resulting in induced convection in solution, is well-established [3]. The aim of the present work is to summarize the results of the experiments obtained during the electrodeposition of NiFe films carried out with and without an applied external magnetic field. Here we studied the effect of a magnetic field on electrochemical mass-transport as well as on the properties of NiFe deposits including elemental composition, magnetics, stress, surface morphology, and structure. The NiFe films were electrodeposited from chloride-based electrolytes containing boric acid, saccharin, and sodium lauryl sulfate as additives. The electrodeposition of NiFe films on Cu seed layers (2000) was carried out in two paddle cells (0.66 cycle/sec) of identical geometry. One cell was equipped with an external magnetic field (B=0.1T) applied para...
Journal of The Electrochemical Society, 2014
ABSTRACT Electrodeposition of gold from a basic "fresh" and &qu... more ABSTRACT Electrodeposition of gold from a basic "fresh" and "used" thiosulfate-sulfite solution containing 0.02 M Na 3 Au(S 2 O 3) 2 has been investigated on Au and Pt electrodes using various electroanalytical techniques (CV, LSV, RDE), controlled potential electrodeposi-tion, as well as constant current and pulse current deposition. It was proposed that irreversible one electron reduction to gold-run in "fresh" solution-at the Pt electrode starts from Au(S 2 O 3)(SO 3) 2 5− , a mixed gold thiosulfate –sulfite complex with a high stability constant (log β = 30.8). A diffusion coefficient of 1.77 × 10 −6 cm 2 /s for Au (S 2 O 3) (SO 3) 2 5− was calculated from the slope of the linear plot i p -ν 1/2 obtained with a Pt electrode, which is lower than the value of diffusion coefficient (D = 4.6 × 10 −6 cm 2 /s) obtained for the Au (S 2 O 3) 2 3− complex (log β = 26.0) present in the "used" solution. The voltammograms for gold deposition on the Au electrode were significantly different from those on Pt indicating that the electron transfer was influenced by the coupled chemical reaction. The natures of possible chemical reactions are discussed. © 2014 The Electrochemical Society. [DOI: 10.1149/2.0411412jes] All rights reserved. Manuscript submitted May 28, 2014; revised manuscript received July 22, 2014. Published August 27, 2014. Electrodeposition of gold is the metallization process of choice for interconnects, and electrical contacts in compound semiconductors, as well as optoelectronic and biomedical applications as described in recent reviews. 1–3 In addition to useful electrical properties gold also shows excellent plasmonic properties at room temperature, but is sus-ceptible to deformations caused by high energy densities encountered in plasmonic devices. 4
Effect of Magnesium and Polyamines on the Binding of Proflavine to T2 DNA, 1978
Some Aspects of Multiphoton Circular Dichroism, 1995
Some Aspects of Multiphoton Circular Dichroism, 1995
Mining, Metallurgy & Exploration, 1984
Th e relative sign ificance of corrosive and erosive wear in m agn etic taconite grinding is exam... more Th e relative sign ificance of corrosive and erosive wear in m agn etic taconite grinding is examined. Th e infl uence of different typ es of aeration (nitrogen, air, and oxygen) on ball wear was established for mild steel and high carbon low alloy steel balls. Ball wear data from dry and wet grinding tests are compared with those obtained in th e presence of an organic solvent that does not promote electrochem ical corrosion. Marked ball grinding tests and electrochem ical m easurements inooloing ball mat erial and magnetit e electrodes Indicate that contribution from oxygen toward wear (corrosive wear) is relatively small, and abrasive wear appears to be significant. Rheological properties ofth e slurry appear to have an important bearing on th e abrasive wear ofgrinding balls.
Journal of The Electrochemical Society, 2016
An external applied magnetic field during electrodeposition can alter mass-transport and deposit ... more An external applied magnetic field during electrodeposition can alter mass-transport and deposit morphology [1,2]. The effect of a magnetic field on mass transport, resulting in induced convection in solution, is well-established [3]. The aim of the present work is to summarize the results of the experiments obtained during the electrodeposition of NiFe films carried out with and without an applied external magnetic field. Here we studied the effect of a magnetic field on electrochemical mass-transport as well as on the properties of NiFe deposits including elemental composition, magnetics, stress, surface morphology, and structure. The NiFe films were electrodeposited from chloride-based electrolytes containing boric acid, saccharin, and sodium lauryl sulfate as additives. The electrodeposition of NiFe films on Cu seed layers (2000) was carried out in two paddle cells (0.66 cycle/sec) of identical geometry. One cell was equipped with an external magnetic field (B=0.1T) applied para...
Journal of The Electrochemical Society, 2014
ABSTRACT Electrodeposition of gold from a basic "fresh" and &qu... more ABSTRACT Electrodeposition of gold from a basic "fresh" and "used" thiosulfate-sulfite solution containing 0.02 M Na 3 Au(S 2 O 3) 2 has been investigated on Au and Pt electrodes using various electroanalytical techniques (CV, LSV, RDE), controlled potential electrodeposi-tion, as well as constant current and pulse current deposition. It was proposed that irreversible one electron reduction to gold-run in "fresh" solution-at the Pt electrode starts from Au(S 2 O 3)(SO 3) 2 5− , a mixed gold thiosulfate –sulfite complex with a high stability constant (log β = 30.8). A diffusion coefficient of 1.77 × 10 −6 cm 2 /s for Au (S 2 O 3) (SO 3) 2 5− was calculated from the slope of the linear plot i p -ν 1/2 obtained with a Pt electrode, which is lower than the value of diffusion coefficient (D = 4.6 × 10 −6 cm 2 /s) obtained for the Au (S 2 O 3) 2 3− complex (log β = 26.0) present in the "used" solution. The voltammograms for gold deposition on the Au electrode were significantly different from those on Pt indicating that the electron transfer was influenced by the coupled chemical reaction. The natures of possible chemical reactions are discussed. © 2014 The Electrochemical Society. [DOI: 10.1149/2.0411412jes] All rights reserved. Manuscript submitted May 28, 2014; revised manuscript received July 22, 2014. Published August 27, 2014. Electrodeposition of gold is the metallization process of choice for interconnects, and electrical contacts in compound semiconductors, as well as optoelectronic and biomedical applications as described in recent reviews. 1–3 In addition to useful electrical properties gold also shows excellent plasmonic properties at room temperature, but is sus-ceptible to deformations caused by high energy densities encountered in plasmonic devices. 4