and nanomechanical resonators on an atom chip
and nanomechanical resonators on an atom chip
and nanomechanical resonators on an atom chip
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N<strong>an</strong>omech<strong>an</strong>ical res<strong>on</strong>ator with a magnetic tip<br />
Si<br />
Si c<strong>an</strong>tilever fabricated <strong>on</strong> SOI <strong>chip</strong><br />
Co<br />
l = 5 - 15 μm<br />
w = 200 nm<br />
t = 100 nm<br />
ω r<br />
/2π ∼ 1 MHz<br />
m eff<br />
∼ 10 -16 kg<br />
Q ∼ 10 3 –10 5<br />
Co ferromagnet (single magnetic domain)<br />
• n<strong>an</strong>ometer-sized magnet (single domain)<br />
• magnetizati<strong>on</strong> al<strong>on</strong>g l<strong>on</strong>g axis<br />
(form <strong>an</strong>isotropy)<br />
• dipole field with str<strong>on</strong>g gradient<br />
B<br />
y<br />
AFM<br />
S<br />
m<br />
N<br />
MFM
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