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Search Publications by: John E. Bonevich (Fed)

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Displaying 26 - 50 of 176

Surface mediated assembly of small, metastable gold nanoclusters

May 27, 2013
Author(s)
John M. Pettibone, William A. Osborn, Konrad Rykaczewski, Albert A. Talin, John E. Bonevich, Jeffrey W. Hudgens
The unique properties of metallic nanoclusters are attractive for numerous commercial and industrial applications but are generally less stable than nanocrystals. Thus, developing methodologies for stabilizing nanoclusters and retaining their enhanced

Topological Insulator Bi2Se3 Nanowire High Performance Field-Effect Transistors

April 30, 2013
Author(s)
Hao Zhu, Curt A. Richter, Erhai Zhao, John E. Bonevich, William A. Kimes, Hyuk-Jae Jang, Hui Yuan, Abbas Arab, Oleg A. Kirillov, James E. Maslar, D. E. Ioannou, Qiliang Li
Topological insulators are unique electronic materials with insulating interiors but robust metallic surfaces. Device applications exploiting their remarkable properties, such as surface conduction of helical Dirac electrons, have so far been hampered by

Superconductivity in Nb-Sn thin films of stoichiometric and off-stoichiometric compositions

December 7, 2012
Author(s)
Matthijs Mentink, John E. Bonevich, Marc Dhalle, Daniel Dietderich, Arno Godeke, Frances Hellman, Herman Ten Kate
Binary Nb-Sn thin film samples are fabricated and characterized in terms of their composition, morphology and superconducting properties. Nb-Sn is magnetron-sputtered onto heated R-plane sapphire substrates at 700 C, 800 C, and 900 C, using a custom-built

Nanocrystalline Zinc Oxide Powder for X-ray Diffraction Metrology

August 6, 2012
Author(s)
David R. Black, Joseph J. Ritter, John E. Bonevich, Albert Henins, James P. Cline
Nano scale zinc oxide powder has been produced using a precise thermal decomposition process from a zinc oxalate precursor powder. The size of the crystallites is determined by the specifics of the thermal processing which were chosen to yield crystallites

Traceable Calibration of a Critical Dimension Atomic Force Microscope

March 9, 2012
Author(s)
Ronald G. Dixson, Ndubuisi G. Orji, Craig D. McGray, John E. Bonevich, Jon C. Geist
The National Institute of Standards and Technology (NIST) has a multifaceted program in atomic force microscope (AFM) dimensional metrology. One component of this program, and the focus of this paper, is the use of critical dimension atomic force

A new approach to prepare well-dispersed CaF2 nanoparticles by spray drying technique

August 5, 2011
Author(s)
Limin Sun, Laurence C. Chow, John E. Bonevich, James W. Mitchell
Previously, a nano-sized calcium fluoride (CaF2) was prepared using a spray drying method by simultaneously feeding Ca(OH)2 and NH4F solutions to a two-liquid nozzle. The aim of the present study was to prepare better-dispersed nano CaF2 particles by co

Development of a Seebeck Coefficient Standard Reference Material (SRM)™

August 1, 2011
Author(s)
Nathan Lowhorn, Winnie Wong-Ng, John Lu, Joshua B. Martin, Martin L. Green, John E. Bonevich, Evan L. Thomas, Neil Dilley, Jeff Sharp
We have successfully developed a Seebeck coefficient Standard Reference Material (SRM™), Bi2Te3, that is essential for interlaboratory data comparison and for instrument calibration. Certification measurements were performed using a differential steady

Fabrication, characterization and simulation of high performance Si nanowire-based non-volatile memory cells

May 16, 2011
Author(s)
Xiaoxiao Zhu, Qiliang Li, D. E. Ioannou, Xuelei X. Liang, Diefeng Gu, Helmut Baumgart, John E. Bonevich, John S. Suehle, Curt A. Richter
We report the fabrication, characterization and simulation of Si nanowire SONOS-like non- volatile memory with HfO2 charge trapping layers of varying thicknesses. The memory cells, which are fabricated by self-aligning in situ grown Si nanowires, exhibit

Fabrication, Characterization and Simulation of High Performance Si Nanowire-based Non-Volatile Memory Cells

May 16, 2011
Author(s)
Xiaoxiao Zhu, Qiliang Li, D. E. Ioannou, Diefeng Gu, John E. Bonevich, Helmut Baumgart, John S. Suehle, Curt A. Richter
We report the fabrication, characterization and simulation of Si nanowire SONOS-like non-volatile memory with HfO2 charge trapping layers of varying thickness. The memory cells, which are fabricated by self-aligning in-situ grown Si nanowires, exhibit high

Three-Dimensionally Structured CdS/CdTe Photovoltaics on Dual Interdigitated Back-Contacts

April 8, 2011
Author(s)
Carlos M. Hangarter, Behrang Hamadani, Ryan F. Need, Carlos R. Beauchamp, Hua Xu, John E. Bonevich, Nikolai Zhitenev, Daniel Josell
The fabrication and properties of three-dimensionally structured CdS/CdTe solar cells with back-contacts are described. Fabrication entails electrodeposition of CdS at submicrometer length scales on one of two metal electrodes interdigitated in a comb

Electrodeposition of Pt_(100-x)Pb_(x) Metastable Alloys and Intermetallics

April 4, 2011
Author(s)
Sun M. Hwang, John E. Bonevich, Jae Jeong Kim, Thomas P. Moffat
The electrodeposition of a series of metastable Pt-Pb alloys and intermetallic phases as well as elemental Pt is demonstrated using an acid electrolyte comprised of 0.05 mol/L Pb(ClO_4)_2 and/or 0.001 mol/L K_2PtCl_4. Pt-Pb films were deposited at various