Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFBA |
Texto Completo: | http://www.repositorio.ufba.br/ri/handle/ri/7681 |
Resumo: | p. 1999-2008 |
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Brandão, G. B.Almeida, Luiz Alberto Luz deDeep, Gurdip SinghLima, A. M. N.Neff, Helmut FranzBrandão, G. B.Almeida, Luiz Alberto Luz deDeep, Gurdip SinghLima, A. M. N.Neff, Helmut Franz2012-12-19T18:16:35Z2012-12-19T18:16:35Z2001-08-150021-8979http://www.repositorio.ufba.br/ri/handle/ri/7681v. 90, n. 4p. 1999-2008The nonlinear dynamic behavior of microbolometers, operating at room temperature (300 K) under conditions of positive electrothermal feedback is investigated. An improved device model, based on the heat balance equation is developed. It takes into account the temperature dependence of the thermophysical parameters, such as thermal coupling coefficient between the sensor and its surroundings, and sensor heat capacity and its thermal resistance coefficient. Operational considerations for thermoresistive microbolometer with positive and negative temperature coefficient of resistance are discussed for both, constant current and constant voltage modes of operation. Analytical expressions are derived for predicting stable and unstable operation. Safety factors L0, establishing the biasing conditions for stable device operation are proposed for the positive temperature coefficient of resistance and negative temperature coefficient of resistance type sensors. Limits for fast catastrophic destruction are provided, and the dynamic characteristics of the associated thermal runaway phenomenon is illustrated. This effect, as predicted by analysis and numerical simulation, was observed experimentally, confirming the validity of the proposed modeling approach for the microbolometer.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2012-12-19T18:16:35Z No. of bitstreams: 1 __scitation.aip.org_getpdf_servlet_GetPDFServlet_filetype=pdf&id=JAPIAU000090000004001999000001&idtype=cvips&doi=10.1063_1.pdf: 681381 bytes, checksum: 37b3d4bb450bc192d2522e8a6e3b41dc (MD5)Made available in DSpace on 2012-12-19T18:16:35Z (GMT). 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dc.title.pt_BR.fl_str_mv |
Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers |
dc.title.alternative.pt_BR.fl_str_mv |
Journal of Applied Physics |
title |
Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers |
spellingShingle |
Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers Brandão, G. B. |
title_short |
Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers |
title_full |
Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers |
title_fullStr |
Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers |
title_full_unstemmed |
Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers |
title_sort |
Stability conditions, nonlinear dynamics, and thermal runaway in microbolometers |
author |
Brandão, G. B. |
author_facet |
Brandão, G. B. Almeida, Luiz Alberto Luz de Deep, Gurdip Singh Lima, A. M. N. Neff, Helmut Franz |
author_role |
author |
author2 |
Almeida, Luiz Alberto Luz de Deep, Gurdip Singh Lima, A. M. N. Neff, Helmut Franz |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Brandão, G. B. Almeida, Luiz Alberto Luz de Deep, Gurdip Singh Lima, A. M. N. Neff, Helmut Franz Brandão, G. B. Almeida, Luiz Alberto Luz de Deep, Gurdip Singh Lima, A. M. N. Neff, Helmut Franz |
description |
p. 1999-2008 |
publishDate |
2001 |
dc.date.issued.fl_str_mv |
2001-08-15 |
dc.date.accessioned.fl_str_mv |
2012-12-19T18:16:35Z |
dc.date.available.fl_str_mv |
2012-12-19T18:16:35Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufba.br/ri/handle/ri/7681 |
dc.identifier.issn.none.fl_str_mv |
0021-8979 |
dc.identifier.number.pt_BR.fl_str_mv |
v. 90, n. 4 |
identifier_str_mv |
0021-8979 v. 90, n. 4 |
url |
http://www.repositorio.ufba.br/ri/handle/ri/7681 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
dc.source.pt_BR.fl_str_mv |
http://dx.doi.org/10.1063/1.1384852 |
dc.source.none.fl_str_mv |
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