Imperial College London
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ProfessorRogerWhatmore

Faculty of Engineering, Department of Materials

Visiting Professor
 
 
 
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Contact

 

r.whatmore

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inbook{Whatmore:2014:10.1007/978-1-4020-9311-1_4,
author = {Whatmore, R},
booktitle = {Characterisation of Ferroelectric Bulk Materials and Thin Films},
doi = {10.1007/978-1-4020-9311-1_4},
editor = {Cain},
pages = {65--86},
publisher = {Springer},
title = {Characterisation of pyroelectric materials},
url = {http://dx.doi.org/10.1007/978-1-4020-9311-1_4},
year = {2014}
}
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RIS format (EndNote, RefMan)

TY  - CHAP
AB  - Pyroelectrics form a very broad class of materials. Any material which has a crystal structure possessing a polar point symmetry—i.e. one which both lacks a centre of symmetry and has a unique axis of symmetry—will possess an intrinsic, or spontaneous, polarisation and show the pyroelectric effect. The pyroelectric effect is a change in that spontaneous polarisation caused by a change in temperature. It is manifested as the appearance of free charge at the surfaces of the material, or a flow of current in an external circuit connected to it. The effect is a simple one, but it has been used in a range of sensing devices, most notably uncooled pyroelectric infra-red (PIR) sensors, and has thus come to be of some engineering and economic significance, enabling a wide range of sensing systems, ranging from burglar alarms through FTIR spectroscopic instruments to thermal imagers.
AU  - Whatmore,R
DO  - 10.1007/978-1-4020-9311-1_4
EP  - 86
PB  - Springer
PY  - 2014///
SN  - 9781402093104
SP  - 65
TI  - Characterisation of pyroelectric materials
T1  - Characterisation of Ferroelectric Bulk Materials and Thin Films
UR  - http://dx.doi.org/10.1007/978-1-4020-9311-1_4
UR  - http://www.imperial.ac.uk/people/r.whatmore
UR  - https://link.springer.com/chapter/10.1007/978-1-4020-9311-1_4
UR  - http://hdl.handle.net/10044/1/89578
ER  -
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