A long DNA segment in a linear nanoscale Paul trap.
A long DNA segment in a linear nanoscale Paul trap.
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DOI:
10.1088/0957-4484/21/1/015103
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发表时间:
2010-01-08
期刊:
影响因子:
3.5
通讯作者:
Krstic PS
中科院分区:
文献类型:
--
作者:
Joseph S;Guan W;Reed MA;Krstic PS
We study the dynamics of a linear distributed line charge such as a single stranded DNA in a nanoscale, linear 2D Paul trap in vacuum. Using molecular dynamics simulations we show that a line charge can be trapped effectively in the trap within well defined range of stability parameters. We investigated (i) a flexible bounded string of charged beads, and (ii) a ssDNA polymer of variable length, for various trap parameters. A line charge undergoes oscillations or rotations as it moves depending on its initial angle, position of the center-of-mass and velocity. The stability region for a strongly bonded line of charged beads is similar to that of a single ion with the same charge over mass ratio. A single stranded DNA, as long as 40nm, does not fold or curl in the Paul trap, but could undergo rotations about the center of mass. To prevent the rotations, we show that a stretching field in the axial direction can effectively prevent the rotations and increase the confinement stability.
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影响因子:
5.5
作者:
Hess, Berk;Kutzner, Carsten;Lindahl, Erik
通讯作者:
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影响因子:
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DOI:
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发表时间:
2004-03-01
期刊:
JOURNAL OF OPTICS B-QUANTUM AND SEMICLASSICAL OPTICS
影响因子:
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作者:
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通讯作者:
Toschek, PE
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作者:
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