Thermal Transport and Measurement of Specific Heat in Artificially Sculpted Nanostructures
Final rept. 23 May 2012-23 May 2014
TATA INST OF FUNDAMENTAL RESEARCH BOMBAY (INDIA)
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Our work in the last two years focused on the idea of using change in thermal strain to extract information about thermal conductivity. One experiment explores using a nanomechanical resonator made using a nanowire and measures the thermal conductivity by tracking the frequency change that results from the temperature profile inside the nanowire -- this is a steady state version of the measurement. We have also explored how the plasmon mode can modify the elastic properties of a nanoscale system across a phase transition this could imply a large change in thermal properties. In the last one year we have extended our technique to perform dynamical measurements. We see that modulation of current through the nanowire we can see a second harmonic sideband modulation in a nanomechanical system.