A research team has developed a technique that enables the nanoscale observation of heat propagation paths and behavior within material specimens. This was achieved using a scanning transmission electron microscope (STEM) capable of emitting a pulsed electron beam and a nanosized thermocouple -- a high-precision temperature measurement device.
A research team has developed a technique that enables the nanoscale observation of heat propagation paths and behavior within material specimens. This was achieved using a scanning transmission electron microscope capable of emitting a pulsed electron beam and a nanosized thermocouple -- a high-precision temperature measurement device.
Public interest in energy conservation and recycling has grown considerably in recent years. This change has inspired scientists to develop next-generation materials/devices capable of controlling and utilizing heat with a high degree of precision, including thermoelectric devices able to convert waste heat into electricity and heat dissipation composites that can cool electronic components exposed to high temperatures.
The complex relationships between the microstructures of materials and how heat flows through them may be elucidated by observing nanoscale heat propagation using the in-situ technique developed in this project. The technique may allow the investigation of complex thermal conduction mechanisms within heat dissipation composites, evaluation of interfacial thermal conduction within micro welded joints and in-situ observation of thermal behavior within thermoelectric materials.
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