introduction to nanomechanics (fall 2012)
DESCRIPTION
Introduction to Nanomechanics (Fall 2012). Martino Poggio. Overview of Some Early Experiments. An early experiment: the quantum of thermal conductance Review of recent developments. The Quantum of Thermal Conductance. x rms ( x zp ). T (K). See notes. - PowerPoint PPT PresentationTRANSCRIPT
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Introduction to Nanomechanics(Fall 2012)
Martino Poggio
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Introduction to Nanomechanics 2
Overview of Some Early Experiments
• An early experiment: the quantum of thermal conductance
• Review of recent developments
09.05.2012
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Introduction to Nanomechanics 3
The Quantum of Thermal Conductance
09.05.2012
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Introduction to Nanomechanics 4
T (K)
xrms (xzp)
1
12 22
Tk
zpzprms
Be
xxx
TkB TkB
mxx zprms 2
2m
Tkxx Bthrms
09.05.2012
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Introduction to Nanomechanics 509.05.2012
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Introduction to Nanomechanics 6
See notes
09.05.2012
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Introduction to Nanomechanics 10
•Phonon propagation is ballistic in SiN at low temperatures•Catenoidal waveguide shape for ballistic phonon transport in 1D with high transmissivity•Integrated high-sensitivity measurement devices (resistors)•Superconducting leads (high electrical conductivity & low thermal conductivity)
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