Effect of ambient on the thermal parameters of a micromachined bolometer

The thermal characterization of bolometers is needed for optimal design as well as applications. In this letter, we present results of the effect of environment on the thermal properties of micromachined bolometers. We find that while in vacuum, the thermal response can be represented by a single ti...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2005-01
Main Authors: Nagapriya, K S, Raychaudhuri, A K, Jain, V K, Jalwania, C R, Kumar, Vikram
Format: Article
Language:English
Subjects:
Bolometers
Dependence
Micromachining
Thermal response
Thermodynamic properties
Time constant
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermal characterization of bolometers is needed for optimal design as well as applications. In this letter, we present results of the effect of environment on the thermal properties of micromachined bolometers. We find that while in vacuum, the thermal response can be represented by a single time constant, in presence of an ambient gas, the thermal response can no longer be described by a single time constant. This will have a direct implication on frequency dependence of responsivity. We present a model to explain our data which involves the finite diffusion time in the ambient gas and the associated extra thermal mass.
ISSN:2331-8422
DOI:10.48550/arxiv.0501164