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| 2008-05-09
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Speaker : Prof. Li Bao-Wen Department of Physics,National University of Singapore
Date : 2008-05-09 15:00
Venue :
Conference Hall 322, ITP/理论物理所322报告厅
Abstract : Information processing in the world's computers is mostly carried out in compact electronic devices, which use the flow of electrons both to carry and control information. There are, however, other potential information carriers, such as photons, which are parcels of light. Indeed a major industry, photonics, has developed around the sending of messages encoded in pulsed light.
In this talk I will demonstrate via different theoretical models of thermal devices such as thermal diode and thermal transistor that, heat pulses, or phonons, rippling through a crystal might also become a major carrier. By combining thermal transistor in different ways, one can also build up thermal logic gate, thus open the possibility that, heat energy already present in abundance in electronic devices, can be used to process information and even to do computation. Thus a new emerging field – phononics is no longer a dream. Some experiments with nanostructures will also be discussed.
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