Results 81 to 90 of about 4,312,384 (244)

Sympathetic cooling of molecular ion motion to the ground state

New Journal of Physics, 2015
We demonstrate sympathetic sideband cooling of a ^40 CaH ^+ molecular ion co-trapped with a ^40 Ca ^+ atomic ion in a linear Paul trap. Both axial modes of the two-ion chain are simultaneously cooled to near the ground state of motion. The center of mass
R Rugango, J E Goeders, T H Dixon, J M Gray, N B Khanyile, G Shu, R J Clark, K R Brown   +7 more
doaj   +1 more source

Multiple-stage Precursor Ion Separation and High Resolution Mass Spectrometry toward Structural Characterization of 2,3-Diacyltrehalose Family from Mycobacterium tuberculosis

Separations, 2019
Mass spectrometry (MS)-based precursor ion isolation, collision-induced dissociation (CID) fragmentation, and detection using linear ion-trap multiple-stage mass spectrometry (LIT MSn) in combination with high resolution mass spectrometry (HRMS) provides
Cheryl Frankfater, Robert B. Abramovitch, Georgiana E. Purdy, John Turk, Laurent Legentil, Loïc Lemiègre, Fong-Fu Hsu   +6 more
doaj   +1 more source

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

Advanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster, Gianni Jacucci, Ouassef Nahi, Thomas Kress, Zabeada Aslam, Stuart Micklethwaite, Alexander N. Kulak, Rik Drummond‐Brydson, Melinda J. Duer, Yi‐Yeoun Kim, Silvia Vignolini, Fiona C. Meldrum   +11 more
wiley   +1 more source

A cryogenic linear ion trap beamline for providing keV ion bunches [PDF]

, 2018
International audienceA new cryogenic linear ion trap beamline has been constructed and commissioned, which serves to inject cold molecular and cluster ions into the RIKEN cryogenic electrostatic ring (RICE).
T. Azuma, Bertier, Paul, Azuma, T, Azuma, T., T. Masunaga, Majima, T, Masunaga, T, Majima, T., S. Menk, Menk, S, T. Majima, Bertier, P, Y. Enomoto, Masunaga, T., Nakano, Y, Bertier, P., Menk, S., Enomoto, Y., P. Bertier, Nakano, Y., Enomoto, Y, Y. Nakano   +21 more
core   +1 more source

Gas-phase ion /ion reactions in linear ion trap instruments: Instrumentation and application to protein analysis

, 2006
Ion/ion reactions in a linear ion trap (LIT) are of great interest because LITs provide significantly higher trapping efficiency and trapping capacity for externally injected ions than three-dimensional (3D) ion traps.
Xia, Yu
core   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Design and characterization of a cryogenic linear Paul ion trap for ion-neutral reaction studies

, 2022
Ultra-high vacuum conditions are ideal for the study of trapped ions. They offer an almost perturbation-free environment, where ions confined in traps can be studied for extended periods of time-facilitating precision measurements and allowing infrequent
Chloé Miossec, Rahul Pandey, Brianna R. Heazlewood, Heazlewood, BR, Hejduk, M, Pandey, R, Coughlan, NJA, Michal Hejduk, Neville J. A. Coughlan, Miossec, C   +9 more
core   +1 more source

Efficient associative ionization of ultracold lithium and the long-lived Li_{2}^{+}

Physical Review Research
We report on the efficient production of Li_{2}^{+} ions in a magneto-optical trap (MOT) of Li atoms prepared in an ensemble of 2S, 2P, and 3S states. A linear Paul trap surrounding the MOT is used to trap and investigate the time evolution of the ion ...
N. Joshi, Vaibhav Mahendrakar, M. Niranjan, Raghuveer Singh Yadav, E. Krishnakumar, A. Pandey, R. Vexiau, O. Dulieu, S. A. Rangwala   +8 more
doaj   +1 more source

Monolithic Oxidation Enables Ultrathin Vertically Graded Tantalum Oxide for Low‐Voltage, Low‐Variability Memristive Switching

Advanced Functional Materials, EarlyView.
Monolithic UV‐ozone oxidation of Ta forms an ultrathin Ta2O5/TaOx bilayer enabling resistive switching with a vertical defect gradient. A stoichiometric surface layer over an oxygen‐deficient sublayer promotes localized filament nucleation near the top interface, enabling low‐voltage operation, and reduced cycle‐to‐cycle variability.
Seunghoon Yang, Dong Hyun Lee, Conan Weiland, Won‐Il Lee, Kim Kisslinger, Mingzhao Liu, Aswin kumar Anbalagan, Xiao Tong, Soumyajit Mandal, Nikhil Tiwale, Houk Jang, Chang‐Yong Nam   +11 more
wiley   +1 more source

Defect generation and dynamics during quenching in finite size homogeneous ion chains

New Journal of Physics, 2020
An equally spaced linear chain of ions provides a test-bed for studying the defect formation during a topological phase transition from a linear to a zig-zag configuration.
J Pedregosa-Gutierrez, M Mukherjee
doaj   +1 more source