Results 41 to 50 of about 3,571,432 (328)
3D-Printable Model of a Particle Trap: Development and Use in the Physics Classroom
Journal of Open Hardware, 2019 Quadrupole ion traps are modern and versatile research tools used in mass spectrometers, in atomic frequency and time standards, in trapped ion quantum computing research, and for trapping anti-hydrogen ions at CERN.
Lachlan McGinness +7 more
doaj +1 more source
A surface electrode point Paul trap
, 2010 We present a model as well as experimental results for a surface electrode radio-frequency Paul trap that has a circular electrode geometry well-suited for trapping of single ions and two-dimensional planar ion crystals.
D. R. Leibrandt +13 more
core +1 more source
High resolution threshold photoelectron spectroscopy by electron attachment [PDF]
, 1979 A system is provided for determining the stable energy levels of a species ion, of an atomic, molecular, or radical type, by application of ionizing energy of a predetermined level, such as through photoionization.
Ajello, J. M., Chutjian, A.
core +1 more source
Forces between a single atom and its distant mirror image
, 2004 An excited-state atom whose emitted light is back-reflected by a distant mirror can experience trapping forces, because the presence of the mirror modifies both the electromagnetic vacuum field and the atom's own radiation reaction field.
Alex Wilson +18 more
core +1 more source
AAA+ protein unfoldases—the Moirai of the proteome
FEBS Letters, EarlyView.AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley +1 more source
Molecular Oncology, EarlyView.Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau +36 more
wiley +1 more source
Transient non-confining potentials for speeding up a single ion heat pump
New Journal of Physics, 2018 We propose speeding up a single ion heat pump based on a tapered ion trap. If a trapped ion is excited in an oscillatory motion axially the radial degrees of freedom are cyclically expanded and compressed such that heat can be pumped between two ...
E Torrontegui +3 more
doaj +1 more source
Chemical stress in a largely deformed electrode: Effects of trapping lithium
iScience, 2023 Summary: Lithium trapping, which is associated with the immobilization of lithium and is one of key factors contributing to structural degradation of lithium-ion batteries during electrochemical cycling, can exacerbate mechanical stress and ultimately ...
Yong Li +4 more
doaj +1 more source
Nanofriction in cold ion traps [PDF]
Nature Communications, 2011 Sliding friction between crystal lattices and the physics of cold ion traps are so far non-overlapping fields. Two sliding lattices may either stick and show static friction or slip with dynamic friction; cold ions are known to form static chains, helices, or clusters, depending on trapping conditions.
Benassi A, Vanossi A, Tosatti E
openaire +5 more sources
Compact Yb$^+$ optical atomic clock project: design principle and current status
, 2016 We present the design of a compact optical clock based on the $^2S_{1/2} \rightarrow ^2D_{3/2}$ 435.5 nm transition in $^{171}$Yb$^+$. The ion trap will be based on a micro-fabricated circuit, with surface electrodes generating a trapping potential to ...
Bigler, Emmanuel +8 more
core +3 more sources