Results 71 to 80 of about 125,698 (307)

Simulation of the Collisional Cooling Effect in a Quadrupole Ion Trap Mass Spectrometer

, 2009
Examination of the collisional cooling effect of the buffer gases on ion trapping and detection in an ion trap mass spectrometer has been undertaken by the SIMION 3D program. Computation for the kinetic energy of ions under various conditions was used to
Wu, Hui-fen; 吳慧芬; Chen, Li-wei; Lin, Ya-ping
core   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

A system for trapping barium ions in a microfabricated surface trap

AIP Advances, 2014
We have developed a vacuum chamber and control system for rapid testing of microfabricated surface ion traps. Our system is modular in design and is based on an in-vacuum printed circuit board with integrated filters.
R. D. Graham, S.-P. Chen, T. Sakrejda, J. Wright, Z. Zhou, B. B. Blinov   +5 more
doaj   +1 more source

3D-Printable Quadrupole Ion Trap

, 2022
Quadrupole ion traps can be used to trap electrically charged particles. At CERN, the GBAR experiment at the antimatter factory uses this particle trap to store anti-hydrogen-ions.
S'Cool LAB, Team
core  

Enhancing Bubble Removal in Geometry‐Optimized Electrodes

Advanced Engineering Materials, EarlyView.
3D‐printed lattice electrodes outperform stochastic foams in alkaline water electrolysis despite 20%–25% lower surface area. Straight flow channels generate Venturi‐like bubble entrainment, suppressing gas accumulation that renders foam interiors electrochemically inactive.
Florian Wiesner, Peter Förster, Alexander Limper, Anselm Brodersen, Matthias Wessling, John Linkhorst   +5 more
wiley   +1 more source

Design optimization and precision requirements of an endcap ion trap for single-ion optical clock applications

AIP Advances
Ion traps serve as the venue for confining ions and exciting ionic transitions in ion optical clocks, where the geometric dimensions of the electrodes within the ion trap directly impact the performance metrics of the ion optical clocks.
Chaowei Wang, Shaoyang Dai, Yani Zuo, Fang Fang   +3 more
doaj   +1 more source

Identification of phospholipid structures in human blood by direct-injection quadrupole-linear ion-trap mass spectrometry

, 2005
Direct-injection electrospray ionization mass spectrometry in combination with information-dependent data acquisition (IDA), using a triple-quadrupole/linear ion trap combination, allows high-throughput qualitative analysis of complex phospholipid ...
许国旺, Gao, P, Yang, J, Wang, C, Xu, GW, Lu, X   +5 more
core   +1 more source

Advanced Electron Microscopy and Microcomputed Tomography Analysis of Single‐Crystal Ni‐Base Superalloys After Short‐Term Multiaxial Creep

Advanced Engineering Materials, EarlyView.
This work studies the anisotropic behavior of circular notched tensile specimens of Ni‐base superalloy single crystals during high‐temperature tensile creep along [001], [110], and [111]. Correlative scale‐bridging imaging of specimens reveals early rupture along [110] because 1) plastic deformation proceeds faster at notch center; 2) more (brittle ...
Leonardo Agudo Jácome, Lijie Cao, Christoph Somsen, Johannes Boes, René Hesse, Werner Theisen, Gunther Eggeler   +6 more
wiley   +1 more source

Micro-fabricated stylus ion trap

, 2013
An electroformed, three-dimensional stylus Paul trap was designed to confine a single atomic ion for use as a sensor to probe the electric-field noise of proximate surfaces.
Christian L. Arrington, Adam M. Rowen, Ulrich Warring, Andrew E. Hollowell, Arrington, Christian L., Finnegan, Patrick, Dietrich Leibfried, Pappas, David P., Wineland, D. J., Andrew C. Wilson, McKay, Kyle S., Wineland, David J., Jonathan J. Coleman, Yves Colombe, Rowen, Adam M., Baca, Ehren D., Warring, Ulrich, Hite, Dustin A., Jördens, Robert, Weides, Martin, Kyle S. McKay, Patrick Finnegan, Dustin A. Hite, Ehren D. Baca, David J. Wineland, Coleman, Jonathan J., Jost, John D., Colombe, Yves, Leibfried, Dietrich, Wilson, Andrew C., Robert Jördens, John D. Jost, Martin Weides, Hollowell, Andrew E., David P. Pappas   +34 more
core   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

Advanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source