Results 81 to 90 of about 101,062 (334)

Deterministic delivery of externally cold and precisely positioned single molecular ions

, 2011
We present the preparation and deterministic delivery of a selectable number of externally cold molecular ions. A laser cooled ensemble of Mg^+ ions subsequently confined in several linear Paul traps inter-connected via a quadrupole guide serves as a ...
A. Friedenauer, A. Ostendorf, B. Roth, C. Wieman, D. Gerlich, D. Madsen, D.J. Larson, D.J. Wineland, F. Diedrich, G. Leschhorn, G. Webster, H.L. Bethlem, H.L. Bethlem, H.N. Chapman, J.B. Fenn, K. Mølhave, L. Young, M. Drewsen, M. Seibert, M.D. Barrett, N. Kjaergaard, P.F. Staanum, P.W. Smith, R. Henderson, R. Neutze, S. Kahra, S. Kahra, S. Schiller, S. Willitsch, S.A. Rangwala, T. Junglen, T. Schaetz, T. Schaetz, T. Schneider, U. Schramm, U. Schramm, W. Paul   +36 more
core   +1 more source

Quantitative analysis of bone reactions to relative motions at implant-bone interfaces [PDF]

, 1993
Connective soft tissues at the interface between implants and bone, such as in human joint replacements, can endanger the stability of the implant fixation. The potential of an implant to generate interface bone resorption and form soft tissue depends on
Brunski, Brunski, Carey, Carter, Cowin, Draenert, Eftekar, Feith, Goldring, Gruen, H Weinans, H.J Grootenboer, Harris, Hori, Hori, Huiskes, Huiskes, Huiskes, Huiskes, Kozinn, Krause, Kölbel, Lewis, Ling, Pauwels, Perren, Perren, Pizzoferrato, R Huiskes, Santare, Schneider, Spector, Stauffer, Stone, Strens, Søballe, Søballe, Uhthoff, Vanderby, Walker, Weinans, Willert   +41 more
core   +4 more sources

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

Research on the Motion Features Model for Underwater Targets with Multiple Highlights and Multiple Micro-Motion Forms

Archives of Acoustics
Motion characterization, including Doppler and micro-Doppler, is crucial for the detection and identification of high-speed underwater targets. Under high-frequency and short-range conditions, underwater targets cannot be simply regarded as single ...
Tong-jing SUN, Zihan ZHOU, Dongliang PENG   +2 more
doaj   +1 more source

Double wells, scalar fields and quantum phase transitions in ions traps

, 2008
Since Hund's work on the ammonia molecule, the double well potential has formed a key paradigm in physics. Its importance is further underlined by the central role it plays in the Landau theory of phase transitions.
Plenio, M. B., Retzker, A., Segal, D., Thompson, R.   +3 more
core   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Parallel ion strings in linear multipole traps

, 2011
Additional radio-frequency (rf) potentials applied to linear multipole traps create extra field nodes in the radial plane which allow one to confine single ions, or strings of ions, in totally rf field-free regions.
A. Calisti, C. Champenois, D. Gerlich, J. Pedregosa-Gutierrez, M. Knoop, M. Marciante   +5 more
core   +2 more sources

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

Micro‐motion parameter extraction of rotating target based on vortex electromagnetic wave radar

IET Radar, Sonar & Navigation, 2021
The vortex electromagnetic (EM) wave radar has the potential to obtain more accurate micro‐motion parameters for target recognition. However, with the existing algorithms of micro‐motion parameter extraction it is difficult to obtain the real rotation ...
Hang Yuan, Ying Luo, Yi‐Jun Chen, Jia Liang, Ying‐Xi Liu   +4 more
doaj   +1 more source

Fabrication of a planar micro Penning trap and numerical investigations of versatile ion positioning protocols

, 2010
We describe a versatile planar Penning trap structure, which allows to dynamically modify the trapping conguration almost arbitrarily. The trap consists of 37 hexagonal electrodes, each with a circumcirle-diameter of 300 m, fabricated in a gold-on ...
A Bautista-Salvador, Amini J M Britton J Leibfried D Wineland D J, Crick D R Donnellan S Ananthamurthy S Thompson R C Segal D M, Daniilidis N, F Schmidt-Kaler, G Werth, Ghosh P K, Herskind P F, Huber G, K Singer, Kirk D, M Hellwig, Marzoli I, Rowe M A, Singer K Poschinger U Murphy M Ivanov P Ziesel F Calarco T Schmidt-Kaler F, Taylor J M Calarco T   +15 more
core   +1 more source