Thermal conductivity of ferroelastic device materials can be reversibly controlled by strain. The nucleation and growth of twin boundaries reduces thermal conductivity if the heat flow is perpendicular to the twin wall. The twin walls act as phonon barriers whereby the thermal conductivity decreases linearly with the number of such phonon barriers. Ferroelastic materials also show elasto-caloric properties with a high frequency dynamics. The upper frequency limit is determined by heat generation on a time scale, which is some 5 orders of magnitude below the typical bulk phonon times. Some of these nano-structural processes are irreversible under stress release (but remain reversible under temperature cycling), in particular the annihilation...
Enabling on-demand control of heat flow is key for the development of next generation of electronic ...
This dissertation presents experimental studies of heat transport by phonons in crystalline material...
Heat conduction by phonons is a ubiquitous process that incorporates a wide range of physics and pl...
Thermal conductivity of ferroelastic device materials can be reversibly controlled by strain. The nu...
Large reversible changes of thermal conductivity are induced by mechanical stress, and the correspon...
Large reversible changes of thermal conductivity are induced by mechanical stress, and the correspon...
Achieving efficient spatial modulation of phonon transmission is an essential step on the path to ph...
This article shows experimentally that an external electric field affects the velocity of the longit...
Achieving efficient spatial modulation of phonon transmission is an essential step on the path to ph...
Dynamic control of thermal transport in solid-state systems is a transformative capability with the ...
The evolution of ferroelastic microstructures under external shear is determined by large-scale mole...
Mitigation of the global energy crisis requires tailoring the thermal conductivity of materials. Low...
The influence of micro/nanostructure on thermal conductivity is a topic of great scientific interest...
Controlling thermal transport at the nanoscale is vital for many applications. Previously, it has be...
Phononic crystals are the acoustic analogs of photonic crystals and aim at manipulating phonon trans...
Enabling on-demand control of heat flow is key for the development of next generation of electronic ...
This dissertation presents experimental studies of heat transport by phonons in crystalline material...
Heat conduction by phonons is a ubiquitous process that incorporates a wide range of physics and pl...
Thermal conductivity of ferroelastic device materials can be reversibly controlled by strain. The nu...
Large reversible changes of thermal conductivity are induced by mechanical stress, and the correspon...
Large reversible changes of thermal conductivity are induced by mechanical stress, and the correspon...
Achieving efficient spatial modulation of phonon transmission is an essential step on the path to ph...
This article shows experimentally that an external electric field affects the velocity of the longit...
Achieving efficient spatial modulation of phonon transmission is an essential step on the path to ph...
Dynamic control of thermal transport in solid-state systems is a transformative capability with the ...
The evolution of ferroelastic microstructures under external shear is determined by large-scale mole...
Mitigation of the global energy crisis requires tailoring the thermal conductivity of materials. Low...
The influence of micro/nanostructure on thermal conductivity is a topic of great scientific interest...
Controlling thermal transport at the nanoscale is vital for many applications. Previously, it has be...
Phononic crystals are the acoustic analogs of photonic crystals and aim at manipulating phonon trans...
Enabling on-demand control of heat flow is key for the development of next generation of electronic ...
This dissertation presents experimental studies of heat transport by phonons in crystalline material...
Heat conduction by phonons is a ubiquitous process that incorporates a wide range of physics and pl...