Negative frequency tuning of a carbon nanotube nano‐electromechanical resonator under tension

Negative frequency tuning of a carbon nanotube nano‐electromechanical resonator under tension
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张力下碳纳米管纳米机电谐振器的负频率调谐

DOI:
10.1002/pssb.201300073
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发表时间:
2013
期刊:
physica status solidi (b)
影响因子:
--
通讯作者:
A. K. Hüttel
A. K. Hüttel
中科院分区:
--
文献类型:
--
作者:
P. L. Stiller;S. Kugler;D. R. Schmid;C. Strunk;A. K. Hüttel

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悬浮的双夹单壁碳纳米管的特点是在低温下驱动纳米机电谐振器。在电子方面,碳纳米管表现出小带隙行为,电子传导中具有库仑封锁振荡,空穴传导中具有透明接触。我们观察直流传输中的驱动机械谐振,包括多个高次谐波响应。数据显示在有限的施加栅极电压下明显的负频率调谐,使我们能够通过静电将谐振频率降低至其最大值的 75%。这可以通过机械模式的静电软化得到一致的解释。
A suspended, doubly clamped single wall carbon nanotube is characterized as driven nano-electromechanical resonator at cryogenic temperatures. Electronically, the carbon nanotube displays small bandgap behaviour with Coulomb blockade oscillations in electron conduction and transparent contacts in hole conduction. We observe the driven mechanical resonance in dc-transport, including multiple higher harmonic responses. The data shows a distinct negative frequency tuning at finite applied gate voltage, enabling us to electrostatically decrease the resonance frequency to 75% of its maximum value. This is consistently explained via electrostatic softening of the mechanical mode.
DOI: --
发表时间: 2010
期刊:
影响因子: --
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DOI: --
发表时间: 2006
期刊:
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