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SUMMARY:The Quantum Nature of Dielectric Heating of Water as an Example fo
 r Industrial Microwave Materials Processing - Prof. Lambert Feher
DTSTART:20140522T180000Z
DTEND:20140522T200000Z
UID:TALK52657@talks.cam.ac.uk
CONTACT:37798
DESCRIPTION:It has long been known\, that dielectric materials can be heat
 ed by applying electromagnetic energy. The common explanations are found d
 ue to the ability of the electric field to polarize charges in the materia
 l and the obstacle of resulting dipole polarization that cannot follow the
  high frequency reversals of the electromagnetic wave. Nevertheless\, unif
 orm processing of arbitrary materials raises substantial problems for micr
 owave technology such as applicator design and process control as physical
 ly speaking a monochromatic microwave frequency is converted to a thermal 
 radiation noise. This physical process is usually accompanied with a nonli
 near thermal heat distribution and the possibility of nonlinear thermal ru
 naway effects for the samples.\nIn fact\, a general quantum mechanical des
 cription of microwave heating for engineering application is proposed and 
 will be applied for water and other materials. This approach shows clear l
 imits on the well known classical treatments and gives a refined understan
 ding on the microstructure explaining specific surprising anomalies of wat
 er\, even its potential of information storage. The quantum representation
  can be applied for ceramics\, composites\, polymers\, nano materials and 
 plasma interactions. As it further turned out\, microwave absorption can b
 e fairly much more diversified due to correlation effects as classical app
 roaches are capable to describe. The results open new strategies for the d
 evelopment of innovative energy efficient High Frequency Technologies and 
 Systems to be engineered in the aerospace\, automotive\, chemical and envi
 ronmental industry.
LOCATION:TWI Granta Park Great Abingdon Cambridge CB21 6AL
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