搜索结果: 1-15 共查到“理学 traps”相关记录31条 . 查询时间(0.099 秒)
Search-and-rescue algorithm identifies hidden 'traps' in ocean waters（图）
Search-and-rescue algorithm identifies hidden traps ocean waters
2020/6/5
When an object or person goes missing at sea, the complex, constantly changing conditions of the ocean can confound and delay critical search-and-rescue operations.Now researchers at the Massachu...
Use of glow sticks in traps greatly increases amphibian captures in study（图）
Use of glow sticks traps greatly increases amphibian captures
2017/11/23
With amphibian populations declining around the world and funds to find the causes scarce, a team of Penn State researchers has shown that an unorthodox tactic will make it easier and therefore less e...
Iowa State engineers develop flexible skin that traps radar waves,cloaks objects
Iowa State engineers flexible skin traps radar waves cloaks objects
2016/3/14
AMES, Iowa – Iowa State University engineers have developed a new flexible, stretchable and tunable “meta-skin” that uses rows of small, liquid-metal devices to cloak an object from th...
Climate change lethal to baby lizards:Nests become heat traps
Climate change lethal baby lizards Nests become heat traps
2015/9/9
The expected impact of climate change on North American lizards is much worse than first thought. A team of biologists led by Arizona State University investigators has discovered that lizard embryos ...
Natural traps of spores and pollen grains from the region surrounding Wenbi Reservoir, Yunnan, China
natural pollen traps Wenbi Reservoir Yunnan China vegetation
2014/1/16
We did a comparative analysis of pollen and spores from five kinds of natural pollen traps at Wenbi Reservoir, northwest Yunnan, China. The natural traps were the surface soil, ground inhabiting mosse...
Climate change action focuses on tourist traps, say researchers
Climate change tourist traps
2014/7/14
Efforts to help Queensland’s tourism industry to adapt to the effects of climate change are likely to be focused on areas that attract the most tourist dollars rather than those with the greatest need...
Fundamental Limit to Atom-Ion Sympathetic Cooling in Paul Traps
Atom-Ion Sympathetic Paul Traps Atomic Physics
2012/5/31
We present a fundamental limit to the sympathetic cooling of ions in radio-frequency traps using cold atoms. The limit arises from the work done by the trap electric field during a long-range ion-atom...
Reconfigurable self-sufficient traps for ultracold atoms based on a superconducting square
Reconfigurable self-sufficient traps ultracold atoms superconducting square Atomic Physics
2012/4/24
We report on the trapping of ultracold atoms in the magnetic field formed entirely by persistent supercurrents induced in a thin film type-II superconducting square. The supercurrents are carried by v...
Structural phase transitions in multipole traps
Structural phase transitions multipole traps
2012/2/28
A small number of laser-cooled ions trapped in a linear radiofrequency multipole trap forms a hollow tube structure. We have studied, by means of molecular dynamics simulations, the structural transit...
On the application of radio frequency voltages to ion traps via helical resonators
radio frequency voltages ion traps helical resonators
2011/9/6
Ions confined using a Paul trap require a stable, high voltage and low noise radio frequency (RF) potential. We present a guide for the design and construction of a helical coil resonator for a desire...
We propose blue-detuned optical traps that are suitable for trapping of both ground state and Rydberg excited atoms. Addition of a background compensation field or suitable choice of the trap geometry...
A microscopic model of electronic field noise heating in ion traps
A microscopic model electronic field noise heating ion traps
2011/9/13
Motional heating of ions in micro-fabricated traps is one of the open challenges hindering experi-mental realizations of large-scale quantum processing devices. Recently a series of measurements of th...
Rotating superfluids in anharmonic traps: From vortex lattices to giant vortices
anharmonic traps vortex lattices giant vortices Quantum Gases
2011/10/9
Abstract: We study a superfluid in a rotating anharmonic trap and explicate a rigorous proof of a transition from a vortex lattice to a giant vortex state as the rotation is increased beyond a limitin...
Impurity-trapped excitons and electron traps in CaF$_2$:Yb$^{2+}$ and SrF$_2$:Yb$^{2+}$ probed by transient photoluminescence enhancement
rare-earth Yb2+ CaF2 two-color spectroscopy exciton electron trap
2011/8/18
Abstract: CaF$_2$:Yb$^{2+}$ and SrF$_2$:Yb$^{2+}$ crystals have been investigated by a two-color UV + IR transient photoluminescence enhancement technique. The enhancement gives information about both...
Correlations and pair emission in the escape dynamics of ions from one-dimensional traps
Correlations pair emission escape dynamics of ions one-dimensional traps
2010/12/28
We explore the non-equilibrium escape dynamics of long-range interacting ions in one-dimensional traps. The phase space of the few ion setup and its impact on the escape properties are studied.