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You searched on: Author: john bonevich

Displaying records 11 to 20 of 69 records.
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11. Superconformal Ni Electrodeposition using 2-Mercaptobenzimidazole
Published: 4/4/2011
Authors: Chang H. Lee, John E Bonevich, Ugo Bertocci, Kristen L Steffens, Thomas P Moffat
Abstract: Ni superconformal filling of sub-micrometer trenches is demonstrated using a Watts bath containing an inhibitor 2-mercaptobenzimidazole (MBI). Hysteretic voltammetry marks the breakdown of the MBI-induced passive-state coincident with the onset of Ni ...

12. Preparation and Properties of Nanoparticles of Calcium Phosphates with Various Ca/P Ratios
Published: 7/1/2010
Authors: Limin Sun, Laurence Chung Lung Chow, Stanislav A. Frukhtbeyn, John E Bonevich
Abstract: This study aimed at preparing and studying the properties of nanoparticles of calcium phosphate (nCaP) with Ca/P ratios ranging from 1.0 to 1.67 using a spray-drying technique. Micro-structural analyses results suggested that the nCaPs with Ca/P ra ...

13. Measuring the Size of Nanoparticles Using Transmission Electron Microscopy (TEM)
Published: 3/1/2010
Authors: John E Bonevich, Wolfgang K. Haller
Abstract: This assay protocol outlines procedures for sample preparation and the determination of mean nanoparticle size (in projection) using transmission electron microscopy (TEM). The projected diameter is the diameter of an equivalent hard uniform sphere s ...

14. Silicon Nanowire Nonvolatile-Memory with Varying HfO2 Charge Trapping Layer Thickness
Published: 12/9/2009
Authors: Xiaoxiao Zhu, Qiliang Li, D. E Ioannou, H Gu, Helmut Baumgart, John E Bonevich, John S Suehle, Curt A Richter

15. Compositional Control in Electrodeposited Pt(subscript 100-x)Cu(subscript x) Alloys.
Published: 10/7/2009
Authors: J Mallett, Ugo Bertocci, John E Bonevich, Thomas P Moffat
Abstract: The electrodeposition of Pt100-xCux alloys is demonstrated using an electrolyte comprised of 1mol/L H2SO4, 0.001 mol/L K2PtCl4 and 0.1 mol/L CuSO4. Film growth proceeds by facile Cu underpotential deposition (upd) occurring in parallel with Pt overpo ...

16. Superconformal Electrodeposition of Co and Co-Fe Alloys using 2-Mercapto-5-benzimidazolesulfonic Acid (MBIS)
Published: 6/10/2009
Authors: Chang H. Lee, John E Bonevich, Joseph E. Davies, Thomas P Moffat
Abstract: Superconformal Co(Fe) filling of submicrometer trenches by electrodeposition is demonstrated in the presence of 2-mercapto-5-benzimidazolesulfonic acid (MBIS). MBIS inhibits the initiation of Co deposition. Inhibition breakdown is characterized by ...

17. AC susceptibility studies of magnetic relaxation in nanoparticles of Ni dispersed in silica
Published: 4/1/2009
Authors: V Singh, M Seehra, John E Bonevich
Abstract: Temperature dependence of AC susceptibilities χ' and χ'' are reported using frequencies fm = 0.1 Hz, 1 Hz, 99 Hz, 499 Hz and 997 Hz for nanoparticles (NPs) of Ni dispersed in silica (Ni/SiO2:15/85) with the mean sizes D=3.8 nm, ...

18. A Method for Fabricating Conductometric Gas Sensors of Metal Oxide Nanotubes Formed in Porous Aluminum Oxide Membranes
Published: 2/2/2009
Authors: Reit Artzi-Gerlitz, Kurt D Benkstein, David L. Lahr, Joshua L. Hertz, Christopher B Montgomery, John E Bonevich, Stephen Semancik, Michael J Tarlov
Abstract: We describe a general, simple strategy for fabricating conductometric gas sensors from metal oxide nanotubes formed in nanoporous aluminum oxide membranes. In this approach, the aluminum oxide membrane serves as both a template for growth of the sens ...

19. 400-Fold Reduction in Saturation Field by Interlayering
Published: 1/13/2009
Authors: William F. Egelhoff Jr., John E Bonevich, Philip Pong, John Unguris, Robert D McMichael, Gery R Stafford, Carlos R Beauchamp
Abstract: The buildup of stress with increasing thickness of magnetic thin films is a common phenomenon that often induces undesirable saturation fields that can convert an otherwise magnetically soft film into a magnetically hard one. We have found that by i ...

20. Inducing analytical orthogonality in tungsten oxide-based microsensors using materials structure and dynamic temperature control
Published: 1/4/2009
Authors: Kurt D Benkstein, Baranidharan Raman, David L. Lahr, John E Bonevich, Stephen Semancik

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