NDLI: Microscopie thermique par sonde thermoélectrique

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Microscopie thermique par sonde thermoélectrique

Content Provider	Semantic Scholar
Author	Bontempi, Alexia
Copyright Year	2015
Abstract	Ce memoire de these s’inscrit dans le developpement d’un microscope thermique a sonde locale.Ce systeme d’imagerie presente deux modes de fonctionnement permettant de determiner soit unetemperature de surface soit des proprietes thermophysiques de materiaux. Un micro-thermocouplebifilaire a ete utilise comme capteur thermique. Il est peu invasif et permet d’acceder a destemperatures de surface sur une large gamme de temperature. De plus, le microscope offrel’avantage d’etre moins sensible a la nature optique des echantillons que les methodes en champlointain. Dans le but de maitriser le contact entre la sonde et la surface, un resonateur a quartz(diapason) a ete utilise comme capteur de force. Un systeme d’excitation original base sur l’effetphoto-thermo-elastique a ete mis au point. Le microscope fonctionne donc comme un SThM puisqu’ilpermet d’extraire simultanement des images topographiques et thermiques (regime periodique 2 et3 omega). En revanche, les resultats obtenus ont permis de mettre en evidence les avantages dumicro-thermocouple en termes de resolutions spatiales topographiques vis-a-vis des techniques asondes resistives fonctionnant en mode 3 omega.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://tel.archives-ouvertes.fr/tel-01622255/document
Alternate Webpage(s)	http://indexation.univ-fcomte.fr/nuxeo/site/esupversions/02eb249d-68c5-414a-bc75-fd3508cc18e0
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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